[Federal Register Volume 63, Number 23 (Wednesday, February 4, 1998)]
[Rules and Regulations]
[Pages 5836-5854]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-2244]
[[Page 5835]]
_______________________________________________________________________
Part II
Department of Commerce
_______________________________________________________________________
National Oceanic and Atmospheric Administration
_______________________________________________________________________
50 CFR Part 679
Fisheries of the Exclusive Economic Zone Off Alaska; At-Sea Scales;
Final Rule
Federal Register / Vol. 63, No. 23 / Wednesday, February 4, 1998 /
Rules and Regulations
[[Page 5836]]
DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
50 CFR Part 679
[Docket No. 960206024-8008-03; I.D. 043097A]
RIN 0648-AG32
Fisheries of the Exclusive Economic Zone Off Alaska; At-Sea
Scales
AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and
Atmospheric Administration (NOAA), Commerce.
ACTION: Final rule.
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SUMMARY: NMFS amends the regulations implementing the Fishery
Management Plan for Groundfish of the Gulf of Alaska and the Fishery
Management Plan for the Groundfish Fishery of the Bering Sea and
Aleutian Islands Area (FMPs) to establish performance, technical,
operational, maintenance, and testing requirement for motion-
compensated scales that may be required by NMFS to weigh catch at sea.
This rule does not require vessels to weigh catch at sea. Any such
requirements would be imposed by other rulemaking. This action is
intended to promote the objectives of the FMPs.
DATES: Effective March 6, 1998, except Sec. 679.28(b)(2)(iii)(B) which
is not effective until the Office of Management and Budget approves the
information collection requirement contained in that section. NMFS will
publish a document in the Federal Register announcing the effective
date for that section. NMFS will announce in the Federal Register the
dates when NMFS will accept type evaluation documentation under 50 CFR
679.28(b)(1) and when scale inspections under 50 CFR 679.28(b)(2) will
be conducted.
ADDRESSES: Send comments regarding burden estimates or any other aspect
of the data requirements, including suggestions for reducing the
burdens, to NMFS and to the Office of Information and Regulatory
Affairs, Office of Management and Budget (OMB), Washington, DC 20503,
Attn: NOAA Desk Officer and to Sue Salveson, Assistant Regional
Administrator, Sustainable Fisheries Division, Alaska Region, NMFS,
P.O. Box 21668, Juneau, AK 99802, Attn: Lori J. Gravel, or delivered to
the Federal Building, 709 West 9th Street, Juneau, AK.
FOR FURTHER INFORMATION CONTACT: Sally Bibb, 907-586-7228.
SUPPLEMENTARY INFORMATION:
Background
Fishing for groundfish by U.S. vessels in the exclusive economic
zone of the Gulf of Alaska (GOA) and the Bering Sea and Aleutian
Islands Management Area (BSAI) is managed by NMFS according to the
FMPs. The FMPs were prepared by the North Pacific Fishery Management
Council (Council) under authority of the Magnuson-Stevens Fishery
Conservation and Management Act (Magnuson-Stevens Act). Fishing by U.S.
vessels is governed by regulations implementing the FMPs at subpart H
of 50 CFR part 600 and at 50 CFR part 679.
On June 16, 1997, NMFS published a proposed rule (PR) proposing to
establish the performance, technical, operational, maintenance, and
testing requirements for motion-compensated scales that may be required
by NMFS to weigh catch at sea (62 FR 32564). Public comment was invited
through July 16, 1997. Ten letters of comment were received.
The Response to Comments section below addresses only comments
about the performance, technical, operational, maintenance, and testing
requirements for scales used to weigh catch at sea. Some of the
comments received on this PR were in response to a different PR that
would require trawl catcher/processors and motherships participating in
the Western Alaska Community Development Quota Program (CDQ) to weigh
catch at sea using such scales (62 FR 43866, August 15, 1997). The end
of the public comment period on that proposed rule was September 29,
1997. NMFS will respond to the following issues in the Response to
Comments section in the preamble to the final rule resulting from that
proposed rule: (1) Which vessels will be required to weigh catch on a
scale, (2) whether scales should be required in particular fisheries or
for particular vessel types, (3) whether additional scale testing is
needed before NMFS requires vessels to use scales, (4) whether other
types of catch-weight estimates could be used if a scale breaks down,
(5) questions about the use of species composition sampling to estimate
the weight of each species in the catch, and (6) the validity of NMFS
cost estimates for scales on certain types of vessels.
This final rule adds a new Sec. 679.28 to 50 CFR part 679, titled
``Equipment and operational requirements for catch weight measurement''
and adds a new appendix A to part 679. Besides setting forth the
equipment, operational, maintenance, and testing requirements for such
scales, Sec. 679.28 sets forth the information that scale manufacturers
must submit to NMFS in order for a scale to be eligible for approval by
NMFS to be used to weigh catch at sea. In addition, Sec. 679.28 sets
forth the responsibilities of vessel owners and operators with respect
to initial after-installation scale inspections and annual
reinspections, and it also sets forth at-sea testing requirements and
recordkeeping and reporting requirements. The new appendix A to part
679 sets forth the performance and technical requirements for type
evaluation and initial and annual reinspections for belt-conveyor
(flow) scales, automatic hopper scales, platform scales, and hanging
scales.
Section 679.28 and appendix A to this part do not impose any
requirement on vessels or processors to weigh catch at sea. Any such
requirement would be imposed by other rulemakings. For example, NMFS
has proposed in a separate rulemaking that trawl catcher/processors and
motherships be required to weigh all CDQ catch and that all processor
vessels, including those using trawl, longline, and pot gear, provide
an observer sampling station which includes a motion-compensated
platform scale (62 FR 43866, August 15, 1997). If the proposal is
adopted, these weighing and scale requirements would be codified in
Sec. 679.32 with other regulations governing monitoring of the CDQ
program. All scales used would have to be approved by NMFS under
Sec. 679.28 and appendix A to this part.
Response to Comments
Comment 1: The proposed at-sea scale requirements are very
different from scale certification requirements for shoreside
processors. Scales in shoreside plants are required to be certified
annually by the Alaska Division of Measurement Standards but are not
required to be tested between annual certifications. Specifically, they
are not required to meet accuracy standards in daily tests. NMFS should
not implement at-sea scale requirements until parallel requirements are
implemented by the State of Alaska for scales used to weigh federally
managed species in shorebased processing plants in Alaska.
Response: Scales in shoreside processing plants are under the
jurisdiction of the State of Alaska Division of Measurement Standards
because the buying and selling of fish is commerce, and the State of
Alaska requires that these fish be weighed on a scale approved under
Alaska Statutes. The State of Alaska determines what constitutes an
approved scale, how often the scale has to be tested, what tests must
be conducted, and what
[[Page 5837]]
accuracy standards must be met. Scales in shoreside plants must meet
significantly more restrictive performance requirements--maximum
permissible errors (MPEs)--and are operated in a less hostile
environment than those at sea.
NMFS believes it is unnecessary to have identical requirements for
scales in the shoreside plants and scales on vessels. The environment
in which the weighing occurs is different, and, therefore, the design
of the land-based versus at-sea scales is different. Once calibrated
and sealed, land-based scales are expected to hold their calibration
over an extended period of time. However, some motion-compensated belt
scales are specifically designed to be recalibrated regularly in order
to weigh accurately. Because the operator must adjust the scale several
times a day, NMFS believes that a daily test of the scale is necessary
to monitor the performance of the scale.
NMFS may re-evaluate the need for daily tests for at-sea scales in
the future if scales with sealed calibration mechanisms are available
or if daily scale test results indicate that fewer tests would provide
sufficient information about the scale's performance.
Comment 2: NMFS should not implement requirements that vessels be
required to weigh catch on a scale evaluated under Sec. 679.28(b) until
NMFS demonstrates that at-sea scales are capable of weighing accurately
on specific vessels or classes of vessels defined by length categories
or processing modes, e.g., catcher/processors that head, gut, and
freeze (H&G).
Response: This rule does not require any vessel to weigh catch at
sea. Such requirements are the subject of other rulemakings. Rather,
this rule establishes performance and technical requirements for scales
used to weigh catch at sea, from platform scales used to weigh
observers' samples to high capacity scales used to weigh total catch.
Questions such as whether at-sea weighing is necessary, which vessels
would be required to weigh catch, and whether back-up methods can be
used when a scale breaks down are being addressed in other rulemakings.
The technical and performance requirements for scales used at sea need
to be issued as soon as possible so that scale manufacturers can
prepare for future scale requirements.
Comment 3: NMFS should use the term ``approved for use'' rather
than ``certified'' to refer to a scale that has met laboratory and
dockside inspection and test requirements to be consistent with the
terms used by weights and measures agencies.
Response: NMFS concurs with the suggestion. This final rule refers
to scales that have met laboratory and initial or annual inspection
requirements as ``approved for use'' rather than ``certified.'' Once a
scale is approved for use, it must also pass daily at-sea scale test
requirements in order to be used to weigh catch at sea.
Comment 4: Testing the scale in a laboratory or on a vessel tied up
to a dock will not verify whether the scale weighs accurately in
motion. These tests can only be performed once the scale has been
purchased and installed on the vessel, successfully evaluated in the
laboratory and by a scale inspector, and used in a commercial fishery.
A scale could pass laboratory and dockside inspection requirements but
fail the at-sea scale tests. Failure of the scale at this point would
be costly to the vessel owner in terms of scale installation and
purchase costs, as well as of loss of time in a commercial fishery.
Response: NMFS is implementing a three-part process for evaluating
whether at-sea scales are meeting NMFS' performance and technical
requirements. This process consists of type evaluation of each model of
scale, dockside inspection of each scale once installed on a vessel and
once a year thereafter, and at-sea testing of each scale. No single
element of the process alone is sufficient to determine whether a scale
is meeting performance and technical requirements.
The laboratory tests are designed to determine whether the model of
scale meets technical and performance standards under a range of
environmental and operating conditions on the vessel, including
temperature, humidity, power fluctuations, short-time power reduction,
power bursts, electrostatic discharge, and electromagnetic
susceptibility. However, the laboratory tests are not designed to test
the scale's performance in motion.
The dockside inspection of each scale will determine, among other
things, whether the scale weighs accurately while in a nearly
stationary position. This evaluation is necessary to identify scales
that are not installed properly or do not meet other technical or
performance requirements before the vessel starts fishing.
The at-sea scale tests will be conducted daily to verify that the
scale is weighing accurately at sea. This is the only test that will be
performed while the scale is in motion. The MPEs are higher in the at-
sea scale tests than in the dockside tests to allow a greater tolerance
for scales tested in motion.
NMFS considered the need for laboratory tests that would verify
whether a scale could weigh accurately in motion and agrees that, if
such tests existed, they would provide valuable information about a
scale's performance. Unfortunately, laboratory tests specifically
designed to test at-sea scales in motion do not exist, and it would be
very costly and time consuming for NMFS to develop laboratory tests
that could accurately reproduce the motion and other environmental
conditions experienced by a vessel.
Although more extensive laboratory tests could provide more
information about the performance of a scale, the at-sea scale tests
would still be the official test of the scale's performance in motion.
It is possible that a scale could pass laboratory and dockside
inspection requirements but fail daily at-sea scale tests. Scale
manufacturers must understand the conditions under which their scale
will be used to accurately specify the performance capabilities of
their scales and to provide the necessary performance guarantees to
their customers. Vessel owners are responsible for proper installation
and maintenance of the scale according to the manufacturer's
instructions.
Comment 5: In rough weather, some vessels may pitch and roll so
much that the fish being conveyed through the factory will slide across
the belt or be lifted off the belt. Laboratory tests would not
determine how the belt scale will function if fish are not in contact
with the weighing plate of the scale. Do NMFS certification tests tell
us if the scale will work if fish are not continually in contact with
the belt itself or are moving against the flow direction of the
conveyor belt because of the extreme motion of a vessel?
Response: Laboratory tests are probably not needed to determine how
a belt scale would function under these circumstances because the scale
is not designed to weigh accurately if fish are sliding across the
scale's conveyor belt or are being lifted off the belt while they are
being weighed. If fish are sliding forward across the scale or are
being lifted off the scale when the vessel pitches, catch weight
probably would be underestimated. If fish are sliding backwards across
the scale, catch weight probably would be overestimated.
The scale is required to be tested once a day by the vessel crew at
a time determined by the crew. NMFS acknowledges that these daily scale
tests cannot identify all weighing problems that will occur between
tests on successive days. However, other
[[Page 5838]]
features of the scale program should minimize this risk. These other
features include the type evaluation, and dockside tests, and the audit
trail that electronically records and stores records of scale
calibrations, adjustments, and observer monitoring.
The vessel operators and scale manufacturers must decide whether a
particular type of scale or model of scale will be able to weigh
accurately under the conditions that will be experienced by the vessel.
If a vessel regularly fishes in circumstances where a belt scale is not
advisable, the owner or operator should consider installing an
automatic hopper scale in which fish are conveyed into the hopper of
the scale, which is a partially enclosed container, and weighed in
batches rather than being weighed as they flow across a scale.
Comment 6: NMFS should require scale manufacturers to post a
performance bond.
Response: NMFS will not require that scale manufacturers post a
performance bond to guarantee that their scales will meet NMFS'
requirements at sea. Arrangements to compensate vessel owners for
problems with the scales should be specified in a contract between the
scale manufacturer and the vessel owner without involvement by NMFS.
Comment 7: Can laboratory tests required by NMFS be conducted at
laboratories in the United States?
Response: Yes, influence factors tests for static temperature
(annex A, A.3.1 to appendix A to part 679), damp heat, steady state
(appendix A, annex A, A.3.2), and power voltage variation (appendix A,
annex A, A.3.3) can be conducted by laboratories accredited under the
National Type Evaluation Program (NTEP). The west coast NTEP laboratory
is located in Sacramento, CA, telephone 916-229-3000. The NTEP
laboratory also can refer scale manufacturers to other laboratories
that have the capability to conduct disturbance tests.
Comment 8: NMFS should allow a combination of NTEP approval on
components and a history of scale use in a shoreside processing plant
in lieu of type evaluation requirements.
Response: NMFS does not agree with this suggestion in its entirety,
but will accept NTEP Certificates of Conformance and test results to be
submitted in partial fulfillment of the type evaluation requirements.
Section 679.28(b)(1)(iv) has been revised accordingly.
The NTEP Certificate of Conformance requires that a component or
device undergo only one or two of the seven laboratory tests
recommended for at-sea scales by our technical advisor (temperature and
power voltage fluctuation). The additional five tests are recommended
for at-sea scales because they represent the type of external factors
present on a vessel that may affect the scale's performance. A history
of use of a similar model of scale in a shoreside processing plant does
not offer NMFS the assurances it needs that the scale is designed to
operate successfully on a vessel.
Comment 9: NMFS should accept International Organization of Legal
Metrology (OIML) Certificates of Conformance for all types of scales
covered by appendix A to part 679, rather than just for belt scales.
Response: NMFS agrees and has revised Sec. 679.28(b)(1)(iv) to
specify OIML certificates and test results for automatic hopper scales,
platform scales, and hanging scales as acceptable verification of test
results. Scale manufacturers who submit NTEP or OIML Certificates of
Conformance must also submit all other information required by NMFS
listed in Sec. 679.28(b)(1)(i) and (b)(1)(ii).
Comment 10: Will NMFS accept an OIML Certificate of Conformance on
a land-based version of the motion-compensated scale?
Response: Yes, NMFS will accept OIML Certificates of Conformance
and test data if they are based on tests of a model of scale without
motion compensation as long as the model of scale that was tested and
the model of scale that will be used to weigh catch at sea differ only
in the elements of the scale that are designed to perform motion
compensation, the size or capacity of the scale, and the software used
by the scale. Section 679.28(b)(1)(ii)(G) was added to the final rule
in order to clarify this allowance.
Comment 11: Vessel owners need an alternative to the weights and
measures inspectors that would be provided through NMFS' cooperative
agreement with the State of Alaska, Division of Measurement Standards.
Alternative weights and measures inspectors are needed in case NMFS
cannot provide scale inspectors when and where they are needed by the
vessel owners. NMFS could specify the qualifications and training
requirements for the inspectors, and the industry could contract
directly with the alternative scale inspectors.
Response: Section 679.28(b)(2)(iii)(B) was added to the final rule
in order to authorize inspectors other than those employed by the State
of Alaska to conduct initial and periodic inspections of at-sea scales.
NMFS will not pay any of the costs associated with these inspections. A
person wishing to conduct scale inspections must be an employee of a
U.S., state, or local weights and measures agency. He or she must be
trained to conduct the inspection by NMFS' authorized scale inspectors
and must notify NMFS in writing that he or she meets the previous two
requirements prior to conducting any inspections. Such person must
provide NMFS with at least 3 days notice that a scale inspection will
be conducted in order to provide NMFS employees with an opportunity to
observe the inspection. This section is not yet effective; OMB must
first approve the collection of information requirements. The section's
effectiveness will be announced by notice in the Federal Register.
Comment 12: NMFS needs to clarify where scale inspections could
occur, because the preamble to the PR says that inspections would occur
in Seattle, WA, or Dutch Harbor, AK, but the regulations do not limit
inspections to these two ports. In addition, NMFS should provide for
scale inspections in Kodiak because these regulations could apply to
vessels in the Gulf of Alaska in the future.
Response: Section 679.28(b)(2)(v) has been added to the final rule
in order to clarify that inspections by inspectors paid for by NMFS
must be conducted only in the Puget Sound area of Washington State and
Dutch Harbor, AK. This restriction is necessary to stay within the
budget NMFS has allocated for the scale inspection program. NMFS will
consider amending these regulations to allow scale inspections in other
ports if the demand exists and the budget can be increased. One
possible option would be to allow inspections in other ports if vessel
owners pay for the cost of travel and transportation of equipment from
Seattle, WA, or Dutch Harbor, AK, to the port in which the scale
inspection is requested.
NMFS also may propose to limit scale inspections to certain months
of the year if necessary to perform all scale inspections within budget
limits.
Comment 13: NMFS should pre-approve scale installation plans.
Response: NMFS will review scale installation plans with vessel
owners and discuss installation, performance, and technical
requirements. However, NMFS cannot approve the vessel owner's plans.
Determination of whether a scale meets NMFS requirements can only be
determined once the scale is installed and in use.
Comment 14: NMFS should give a 1-month grace period for annual
inspections. The purpose of this would be to increase the scheduling
flexibility for both NMFS and vessel owners
[[Page 5839]]
without resulting in a situation where the vessel is required to
undergo the inspection more than once per year.
Response: The final regulations require that the scale be inspected
and tested by an inspector authorized by NMFS when it is first
installed (initial inspection) and one time each year within 12 months
of the date of the most recent inspection. This means that a scale that
passes the inspection requirements on May 1, 1998, would not be
required to pass the inspection requirements again until May 1, 1999.
Because no scale must be inspected more than once in a 12-month period,
a 1-month grace period is not necessary. Vessel owners may schedule
their second inspection for a date less than 12 months from the initial
inspection so that future annual inspections may occur during a more
convenient time of the year. See the response to comment 15 for
additional information.
Comment 15: NMFS should grant a trip-by-trip exemption if an
inspector is not available.
Response: NMFS intends to establish a scale inspection program that
will provide inspectors when they are needed within 10 working days of
the date the request for a scale inspection is received. Vessel owners
are encouraged to plan ahead in order to ensure that they obtain an
annual inspection prior to the deadline.
Comment 16: The proposed MPE of 3 percent for at-sea scale tests is
too high. Scales could and should achieve better than that at sea.
Response: A 3-percent MPE was proposed as a compromise between what
scale manufacturers said they could achieve and what NMFS believed
would be acceptable for fisheries management purposes. NMFS did not
want to propose an MPE so restrictive that it would cause scales to
regularly fail at-sea tests. Tests conducted on a belt conveyor scale
between August 1996 and March 1997 showed that a 1.5-percent MPE could
be met in most cases but that a 3-percent MPE was not exceeded in any
test. NMFS will maintain the MPE for belt and automatic hopper scales
at 3 percent, and may re-evaluate the 3-percent MPE in the future if
at-sea scale test results indicate that better performance can
practically be achieved. See the response to comment 17 about MPEs for
platform and hanging scales.
Comment 17: The MPE for at-sea tests of the platform and hanging
scales should be reduced from 3 percent to 0.5 percent because these
types of scales can meet more restrictive MPEs at sea. In addition,
many of the platform scales will be used to weigh test material for
testing the belt or automatic hopper scales. If the allowable error in
the scale used to weigh test material is 3 percent, then a cumulative
error of 6 percent could be allowed for the belt and automatic hopper
scales.
Response: NMFS agrees and has revised Sec. 678.28(b)(3)
accordingly.
Comment 18: The MPE for belt and automatic hopper scales at initial
and periodic inspections should be 1 percent.
Response: Section 2.2.1.3 (belt scales) and section 3.2.1.2
(automatic hopper scales) of appendix A to part 679 specify that the
MPE for material tests and increasing and decreasing load tests
conducted in a laboratory or on a scale installed on a stationary
vessel is 1 percent. The MPE for at-sea tests of belt and automatic
hopper scales is 3 percent.
Comment 19: NMFS needs to clarify what information is required on
the scale's ``audit trail.''
Response: The audit trail is an electronic and printed record of
changes that are made to the scale or the scale weights by the scale
operator. Appendix A to part 679 requires that when a scale is adjusted
or calibrated, either a security seal must be broken or an audit trail
must be provided. Changes in adjustable components, such as span
(calibration) and automatic zero-setting, that affect the performance
or accuracy of the scale must be recorded on the audit trail.
NMFS has revised the regulations and annex A to appendix A in order
to clarify that the information on the audit trail must be provided in
an electronic form that cannot be changed or erased by the scale
operator, can be printed at any time, and can be cleared by the scale
manufacturer's representative upon direction by NMFS or by an
authorized scale inspector.
NMFS removed the requirement that ``a unique identifying number
from 000 to 999 to identify the type of adjustment being made to any
parameter that affects the performance of the scale'' be recorded on
the audit trail. The requirement to record the date and time of each
adjustment will provide sufficient information about the chronological
order of adjustments. NMFS also removed the requirement that the
``source of the change'' be provided on the audit trail. This referred
to the identification of the person making the change which, upon
consultation with our technical advisor and scale manufacturers, NMFS
determined was not meaningful information to require.
If the adjustment recorded on the audit trail is a scale
calibration performed by the scale operator, the audit trail would
record the date and time the calibration procedure was performed, the
name or type of adjustment being made, such as ``span adjustment'' or
``calibration,'' and the initial and final values of the parameter
changed.
The final rule has also been changed to add the requirement that
any information to be provided on the audit trail be described in the
``information about the scale'' submitted to NMFS under
Sec. 679.28(b)(1)(ii)(H) and to add the definition of ``adjustable
component'' to section 5 of appendix A to part 679.
Comment 20: Can the information on the audit trail be printed on a
remote computer that captures the data from the scale?
Response: Yes. Information on the audit trail is required to be
recorded and retained in memory until it is cleared from memory at the
annual inspection. The information is not required to be displayed on
the scale indicator. However, the scale system must include the
capability to print the information on the audit trail at any time upon
request of the observer, the scale inspector, NMFS staff, or an
authorized officer.
Comment 21: Can the printed information required in sections
2.3.1.8, 3.3.1.7, and 4.3.1.5 of appendix A to part 679 be provided by
an auxiliary printer connected to the scale?
Response: The printed information could come from either a printer
that is connected directly to the scale or that is connected through
another computer on the vessel.
Comment 22: The proposed rule would appear to allow the scale
operator to recalibrate the scale every day just prior to the scale
test. This would render the test valueless because a scale could be
operated with as great as 10 percent error for 24 hours and still
satisfy NMFS requirements.
Response: NMFS does not agree with this comment. The scales are
required to be adjusted so that the error is as close as possible to
zero, which means that vessel operators are prohibited from
deliberately adjusting the scale incorrectly. Although scales may be
recalibrated or tested at any time during the day, the audit trail is
designed to record information that will be used to determine whether a
scale had been incorrectly adjusted and then readjusted just prior to
the scale test.
Comment 23: NMFS needs to clarify the difference in requirements
for different uses of platform scales.
Response: Platform scales could be used for two different purposes
on a
[[Page 5840]]
vessel. First, a platform scale could be used as an observer sampling
scale and to verify the weight of fish used to test the belt or
automatic hopper scales on trawl catcher/processors and motherships. In
this case, the scale will not be required to provide printed output of
scale weights because all information from the scale weights will be
recorded by hand on the observer's forms or on the scale test report
form. In addition, the platform scale will not be required to provide
an audit trail of all adjustments to the scale. The purpose of the
audit trail for scales used to weigh total catch is to monitor whether
the scale is being improperly adjusted so that weights are incorrectly
reported. An audit trail is not necessary for a scale used primarily by
the observer or witnessed by the observer during a scale test because
the observer can test the scale immediately prior to use to verify its
accuracy.
Second, a platform scale could be used to weigh total catch. In
this case, the scale would be required to meet all of the performance
and technical requirements specified in Sec. 679.28(b) and section 4 of
appendix A to part 679.
For all uses of a platform scale, the scale is required to meet
type evaluation requirements and to be inspected and approved by an
authorized scale inspector upon initial installation and each year
thereafter. In addition, the vessel owner is required to provide
certified test weights as described in Sec. 679.28(b)(3)(ii)(B) for the
daily scale tests at sea.
Comment 24: In appendix A to part 679, sections 2.3.1.5 and
3.3.1.9, NMFS proposes to require that belt scales and automatic hopper
scales be capable of indicating at least 99,999,999 kilograms so that
the cumulative weight of all catch in a year could be displayed on the
indicator. Scales currently on the market cannot display this many
digits.
Response: NMFS has revised sections 2.3.1.5 and 3.3.1.9 of appendix
A to part 679 to allow the information required on the scale indicator
to be displayed in either kilograms or metric tons. These sections now
read: ``the range of the weight indications and printed values for each
haul or set must be from 0 kg to 999,999 kg and for the cumulative
weight must be from 0 to 99,999 metric tons.'' This revision allows the
cumulative catch of all material weighed on the scale to be displayed
in less space.
NMFS also revised the wording in several other sections of appendix
A to part 679 to make other requirements consistent with the changes in
sections 2.3.1.5 and 3.3.1.9.
Sections 2.3.1.1 and 3.3.1.1 were revised to replace technical
terms with plain English. For example, the first two sentences of
section 2.3.1.1 previously read, ``a belt scale must be equipped with a
primary indicator in the form of a master weight totalizer, a printer,
and a rate of flow indicator. It must also be equipped with auxiliary
means to indicate or print values for specified partial loads.''
Section 2.3.1.1 has been revised to read, ``a belt scale must be
equipped with an indicator capable of displaying both the weight of
fish in each haul or set and the cumulative weight of all fish or other
material weighed on the scale between annual inspections (``the
cumulative weight''); a rate of flow indicator; and a printer.''
Section 3.3.1.1 has been revised similarly.
Sections 2.3.1.3 and 3.3.1.3 have been revised to read, ``the
weight of each haul or set must be indicated in kilograms and the
cumulative weight may be indicated in kilograms or metric tons and
decimal subdivisions.''
Section 2.3.1.6 has been revised to read, ``the means to indicate
the weight of fish in each haul or set must be resettable to zero. The
means to indicate the cumulative weight must not be resettable to zero
without breaking a security means and must be reset only upon direction
by NMFS or an authorized scale inspector.'' Section 3.3.1.10 has been
revised to read, ``the cumulative weight must not be resettable to zero
without breaking a security means and must be reset only upon direction
by NMFS or an authorized scale inspector.''
Comment 25: NMFS should allow limited component exchange for load
cells without requiring that the scale be re-evaluated at a laboratory.
Response: NMFS agrees that metrologically equivalent load cells
from the same or a different manufacturer may be installed into a scale
without requiring that scale to be resubmitted for laboratory tests or
retested by a scale inspector. However, a materials test should be
conducted immediately after replacing the load cell to assure that the
scale is weighing accurately.
Comment 26: NMFS should clarify the definition of a major
modification that would require a scale to be inspected by an
authorized scale inspector between annual inspections.
Response: It would be difficult for NMFS to distinguish between
scale modifications that should require re-inspection versus those that
should not. Therefore, NMFS is requiring only that the scales be
inspected when they are first installed on a vessel and at least one
time per year thereafter. Between annual inspections, NMFS will rely on
the daily scale test requirement to determine whether a scale is
weighing accurately after scale modifications.
Comment 27: For automatic hopper scales, NMFS should allow the
option of having the scale return to zero after weighing each hopper of
fish rather than requiring the scale to print the load and no-load
reference values for each hopper load because this provision is allowed
for automatic hopper scales used in shoreside plants.
Response: NMFS revised section 3.3.1.1 of appendix A to part 679 to
allow this option for automatic hopper scales.
Comment 28: A material test should be used to test both belt scales
and automatic hopper scales at sea. The material used in the test
should be weighed immediately before or after the test to establish its
true weight, regardless of whether this material is fish or an
alternative (such as sand bags).
Response: NMFS agrees and has revised the requirements for at-sea
scale tests in Sec. 679.28(b)(3) accordingly.
Comment 29: The overload protection requirement should be increased
from 150 percent to 200 percent because of the extra stress on scales
used at sea.
Response: Increasing the overload protection requirement for the
scales is unnecessary. Loads in excess of 150 percent of the capacity
of the scale should not normally accumulate on the scale. In the event
that they do, the scale should be recalibrated before it is used to
weigh more fish.
Comment 30: Stating specific sizes of scales under the definition
of a platform scale may unintentionally favor specific scale
manufacturers.
Response: Scale dimensions were included as examples representative
of some scales in use, but were not intended to specify designs of any
particular manufacturer, nor to preclude the design of a manufacturer.
NMFS has removed this particular sentence from the definition.
Comment 31: Can a ``security means'' be a password needed to enter
the indicator that will be known only to the inspector and that can be
changed only by the inspector?
Response: This comment refers to the requirement in sections
2.3.1.11, 3.3.1.12, and 4.3.1.8 of appendix A to part 679 which states
that ``an adjustable component that can affect the performance of the
scale must be held securely in position and must not be capable of
adjustment without breaking a security means, unless a record of the
adjustment is made on the audit trail
[[Page 5841]]
* * *.'' Because it would be impossible for NMFS to determine if the
password needed to make a scale adjustment was known to the vessel
crew, a password would not be considered a ``security means.''
Therefore, any feature of the scale that could be changed by entering a
password prior to making the change is required to be recorded on the
audit trail. NMFS also revised the definition of ``security seals or
means'' in section 5.0 of appendix A to part 679 in order to be
consistent with this response to comment 31. In the PR, the definition
read, ``a physical seal such as a lead and wire seal or a key or code
that when a change is made in the operating or performance
characteristics of a scale it becomes evident.'' The definition now
reads ``a physical seal such as a lead and wire seal that must be
broken in order to change the operating or performance characteristics
of the scale.''
Comment 32: The conveyors on belt scales are run by electricity
rather than hydraulics, which is used for other conveyors on the
vessel. Therefore, the scales will be less robust than regular conveyor
belts. The electricity-driven belts will pose both safety and breakdown
problems. In addition, scales will be exposed to more sand and grit on
vessels that head, gut, and freeze groundfish than they would on
vessels fishing for pollock, making durability a greater concern.
Scales should not be required on H&G vessels until hydraulically
operated belt scales are available.
Response: NMFS is setting the performance and technical standards
for scales, specifying the fisheries in which scales are required, and
will monitor the use of scales in these fisheries. NMFS cannot
guarantee that scales will be able to operate on all fishing vessels
under all sea conditions. It is the responsibility of vessel owners who
wish to participate in these fisheries and of the scale manufacturers
to make sure that they have installed a scale that is capable of
meeting NMFS' standards. The decision of how a scale or a component of
a scale is powered on a vessel should be made by the scale
manufacturers and the vessel operators.
Comment 33: Fish should be used in the initial evaluation of the
scale conducted by the scale inspector.
Response: NMFS agrees that it is most desirable to use the same
material that will be weighed by the scale in material tests of the
scale. However, it would be very difficult to make fish available for
scale tests that are most likely to occur outside commercial fishing
seasons and in ports far from where the fish are harvested. It is also
very difficult and expensive to require inspectors to conduct scale
tests on a vessel after it starts fishing. Therefore, NMFS believes
that the only option will be to conduct the material tests in the
laboratory and at dockside with an alternative material that simulates
the flow of fish as much as possible.
Comment 34: Section 2.2.2 of appendix A to part 679 specifies a
minimum flow rate for belt scales. What is required of the scale if it
is weighing below the minimum flow rate?
Response: Section 2.2.2 requires that the manufacturer specify the
minimum flow rate for the scale and that the scale produce an audio or
visual signal when the rate of flow is less than the minimum flow rate
or greater than 98 percent of the maximum flow rate. NMFS is not
requiring that the scale stop operating if the alarm indicates that the
scale is operating below the minimum flow rate. However, the scale
operator should correct the situation because the scale is not being
operated according to the manufacturer's specifications.
Comment 35: How long must the zero load test required in section
2.2.1.2 of appendix A to part 679 be performed?
Response: Section 2.4.2.2 of appendix A to part 679 requires that
the zero load test be conducted for a time equal to that required to
deliver the minimum totalized load, which will depend on the capacity
and belt speed of the individual scale.
Changes From the Proposed Rule
In addition to the changes discussed in the preceding responses to
comments and editorial corrections and minor changes for grammar,
consistency of word usage, and clarity, NMFS has made the following
changes from the proposed rule:
1. NMFS added the following sentence to Sec. 679.28(b)(2)(iv) to
more clearly state the responsibility of the vessel owner in providing
advance notice of the need for a scale inspection: ``[v]essel owners
must request a scale inspection at least 10 working days in advance of
the requested inspection by contacting an authorized scale inspector at
the address indicated on the list of authorized inspectors.''
2. NMFS added the requirement in Sec. 679.28(b)(3)(ii)(B) that the
weight of each test weight must be certified by a National Institute of
Standards and Technology approved metrology laboratory and that a copy
of the laboratory certification documents be maintained on board the
vessel at all times while the scale is required. This requirement is
necessary in order to accurately determine the weight of the test
weights which will be used to calibrate and test scales at sea.
3. NMFS revised Sec. 679.28(b)(2)(vii) to require that the vessel
owner maintain a copy of the scale inspection test report form on the
vessel rather than submit a copy to NMFS. NMFS will receive a copy of
this report form from the scale inspectors.
4. NMFS revised Sec. 679.28(b)(3), (b)(4), and (b)(5) to clarify
that both the vessel owner and the vessel operator are responsible for
ensuring that the daily scale tests are conducted, that adjustments
made to the scale bring the performance errors as close as practicable
to a zero value, and that the required printed reports are provided.
5. NMFS added Sec. 679.28(b)(5)(i) to clarify that scale weights
may not be adjusted to account for the perceived weight of water, mud,
dirt, or other non-fish material. The scale must display, record, and
print the weight of the material being weighed. Sections 2.3.1.13 and
3.3.1.16 of appendix A to part 679, titled ``Adjustments to Scale
Weights,'' were added to read: ``The indicators and printer must be
designed so that the scale operator cannot change or adjust the
indicated and printed weight values.''
6. NMFS added Sec. 679.28(b)(6) to require that the observer be
able to see the product on the scale and the scale indications at the
same time. This section prevents the scale indicator, which displays
the scale weights, from being installed somewhere on the vessel where
it could not be watched as fish were being weighed.
7. NMFS revised section 2.2.1.2 of appendix A to part 679 in order
to clarify its meaning. The requirement in the PR was that ``the MPE
for zero load tests conducted in a laboratory or on a scale installed
on a stationary vessel is 0.1 percent or 1 scale division
(d).'' NMFS revised the last part of this sentence to read `` +0.1
percent of the value of the minimum totalized load or 1 scale division
(d), whichever is greater.''
8. NMFS revised the last sentence of sections 2.2.1 and 3.2.1 of
appendix A to part 679 in order to be consistent with
Sec. 679.28(b)(2)(i) which states that scale inspections will be
conducted on a vessel tied up at a dock. In the PR, sections 2.2.1 and
3.2.1 of appendix A to part 679 read, ``a stationary vessel refers to a
vessel that is tied up at a dock or anchored near shore and is not
under power at sea.'' NMFS removed ``or anchored near shore.''
9. NMFS revised the requirements for the information from the
scales used to weigh total catch that must be printed each day
(sections 2.3.1.8, and 3.3.1.7 of
[[Page 5842]]
appendix A to part 679). These revisions added the requirements to
print vessel name, the value of the cumulative catch recorded on the
totalizer, and the date and time the information is printed. The
following information is required to be printed each day:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the vessel;
iii. The haul or set number;
iv. Month, day, year, and time (to the nearest minute) weighing
catch from the haul or set started;
v. Month, day, year, and time (to the nearest minute) weighing
catch from the haul or set ended;
vi. The total weight of catch in each haul or set;
vii. The total cumulative weight of all fish or other material
weighed on the scale; and
viii. The date and time the information is printed.
10. NMFS added a sentence in section 2.2.1.1 c. of annex A to
appendix A to part 679 in order to change the temperature effect at
zero flow rate from 10 deg. C to 10 deg. C 0.2 deg. C.
Following is an example of how the information required to be
printed each day could be presented for the first day that weighing on
the scale occurs:
Vessel Name: ______________________________ Federal Permit #:
----------------------------------------------------------------------------------------------------------------
Time
-------------------------- Haul or set
Haul or set number Date Weighing Weighing weight (kg)
started stopped
----------------------------------------------------------------------------------------------------------------
1........................................................... 1/1/98 0200 0500 50,000
2........................................................... 1/1/98 0600 0900 50,000
3........................................................... 1/1/98 1600 1900 50,000
Cumulative weight........................................... 1/1/98 N/A N/A 150,000
----------------------------------------------------------------------------------------------------------------
Date and time information printed: 1/1/98, 2100 hrs.
Signature of vessel operator:________________________________________
----------------------------------------------------------------------------------------------------------------
10. In section 2.3.4 of appendix A to part 679, the value of the
scale division (d) was added to the list of marking requirements. In
section 3.3.6, the accuracy class and the value of the scale division
(d) were added to the list of marking requirements.
11. Section 4.2.1 of appendix A to part 679 was revised to clarify
and correct the sections referring to MPEs in type evaluation and
initial and periodic inspections. Table 1 was also revised to delete
the last column of MPEs for ``in-service.'' In-service refers to the
time when the scale is in use at sea, and this MPE is already specified
in Sec. 679.28(b)(3). Table 2 was added to section 4.2.2 of appendix A
to part 679 to define the accuracy classes referred to in table 1 to
appendix A.
12. In section 4.2.3 of appendix A to part 679, two typographical
errors were corrected. ``Class III scale 10 d'' should have read,
``Class IIII scale 10d.'' The weights and measures industry uses
``IIII'' rather than the Roman numeral IV to refer to a class four
scale.
13. The word ``sealable'' was deleted from the definition of
``event logger'' because the parameters being recorded by the event
logger are parameters that cannot be sealed. The definition also was
revised to make it consistent with the changes made to the audit trail
described in the response to comment 19.
Classification
This final rule has been determined to be not significant for
purposes of E.O. 12866.
When this rule was proposed, the Assistant General Counsel for
Legislation and Regulation of the Department of Commerce certified to
the Chief Counsel for Advocacy of the Small Business Administration
that it would not have a significant economic impact on a substantial
number of small entities. The rationale for this determination appeared
in the preamble to the proposed rule. NMFS received one comment
regarding this certification. However, the comment was in reference to
a different proposed rule which would require trawl catcher/ processors
and motherships participating in the CDQ fisheries to use a scale
approved by NMFS. NMFS will respond to this comment in the comment
section of the relevant rulemaking. No comments were received regarding
the forms for the certification. Accordingly, no regulatory flexibility
analysis was prepared.
Notwithstanding any other provision of the law, no person is
required to respond to, nor shall any person be subject to a penalty
for failure to comply with, a collection-of-information subject to the
requirements of the PRA, unless that collection-of-information displays
a currently valid OMB control number.
This rule contains collection-of-information requirements subject
to the Paperwork Reduction Act. A request has been submitted to OMB for
approval of a requirement that inspectors from agencies other than an
agency designated by NMFS submit written verification that they have
completed training requirements prior to conducting a scale inspection.
The public reporting burden for this proposed requirement is estimated
to average 30 minutes per response. Inspectors from agencies other than
the weights and measures agency designated by NMFS to perform scale
inspections on behalf of NMFS must notify the Regional Administrator of
the date, time, and location of the scale inspection at least 3 working
days before the inspection is conducted. The public reporting burden
for this requirement is estimated to average 2 minutes per notice.
Public comment is sought regarding: Whether this collection of
information is necessary for the proper performance of the functions of
the agency, including whether the information has practical utility;
the accuracy of the burden estimate; ways to enhance the quality,
utility, and clarity of the information to be collected; and ways to
minimize the burden of the collection of information, including through
the use of automated collection techniques or other forms of
information technology.
The other collections of information in this rule have been
approved by the Office of Management and Budget, OMB control number
0648-0330. The new information requirements include the following: (1)
Scale manufacturers must submit completed At-Sea Scales Type Evaluation
Certification documents to the Regional Administrator prior to being
placed on the list of eligible at-sea scales; (2) vessel owners must
maintain a copy of the scale certification document issued by a scale
inspector
[[Page 5843]]
approved by the Regional Administrator to NMFS prior to participating
in a fishery in which a certified at-sea scale is required; (3) vessel
operators must maintain a record of the results of daily at-sea scale
tests; (4) vessel operators must maintain printed output from the
scale; and (5) vessel operators must print information from the scale's
audit trail once per year. The public reporting burden for this
collection of information is estimated to average 176 hours per
response for the type evaluation certification documents, 1 minute per
response to maintain the scale certification on the vessel, 45 minutes
per response for the at-sea scale tests, 5 minutes per response for the
printed output from the scale, and 3 minutes per response for the
printed audit trail. These estimates include the time for reviewing
instructions, searching existing data sources, gathering and
maintaining the data needed, and completing and reviewing the
collection of information. Send comments regarding these burden
estimates or any other aspect of the data requirements, including
suggestions for reducing the burden, to NMFS (see ADDRESSES) and to the
Office of Information and Regulatory Affairs, OMB, Washington, DC 20503
(Attention: NOAA Desk Officer).
List of Subjects in 50 CFR Part 679
Alaska, Fisheries, Reporting and recordkeeping requirements.
Dated: January 23, 1998.
David L. Evans,
Deputy Assistant Administrator for Fisheries, National Marine Fisheries
Service.
For the reasons set out in the preamble, 50 CFR part 679 is amended
as follows:
PART 679--FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA
1. The authority citation for part 679 continues to read as
follows:
Authority: 16 U.S.C. 773 et seq., 1801 et seq., and 3631 et seq.
2. In subpart B, Sec. 679.28 is added to read as follows:
Sec. 679.28 Equipment and operational requirements for catch weight
measurement.
(a) Applicability. This section contains the requirements for NMFS
approval of scales used to weigh catch at sea and other requirements
relating to such scales. This section does not require any vessel to
weigh catch at sea. Such requirements appear elsewhere in this part.
(b) Scales used to weigh catch at sea. In order to be approved by
NMFS a scale used to weigh catch at sea must meet the type evaluation
requirements set forth in paragraph (b)(1) of this section and the
initial inspection and annual reinspection requirements set forth in
paragraph (b)(2) of this section. Once a scale is installed on a vessel
and approved by NMFS for use to weigh catch at sea, it must be
reinspected annually and must be tested daily and meet the maximum
permissible error (MPE) requirements described in paragraph (b)(3) of
this section.
(1) List of scales eligible for approval. The model of scale must
be included on the Regional Administrator's list of scales eligible to
be approved for weighing catch at sea before an inspector will schedule
or conduct a scale inspection under paragraph (b)(2) of this section. A
scale will be included on the list when the Regional Administrator
receives the information specified in paragraphs (b)(1)(i) through (iv)
of this section. This information identifies and describes the scale,
sets forth contact information regarding the manufacturer, and sets
forth the results of required type evaluations and testing. Type
evaluation and testing must be conducted by a laboratory accredited by
the government of the country in which the tests are conducted.
(i) Information about the scale. (A) Name of scale manufacturer.
(B) Name of manufacturer's representative.
(C) Mailing address of scale manufacturer and manufacturer's
representative.
(D) Telephone and fax number of manufacturer's representative.
(E) Model and serial number of the scale tested.
(F) A written description of the scale and diagrams explaining how
the scale operates and how it compensates for motion.
(G) A list of the model numbers of all scales for which type
evaluation results are applicable, identifying the differences between
the model evaluated in the laboratory and other models listed. The
scales may differ only in the elements of the scale that perform motion
compensation, the size or capacity of the scale, and the software used
by the scale.
(H) A list of types of scale adjustments that will be recorded on
the audit trail, including the name of the adjustment as it will appear
on the audit trail, and a written description of the adjustment.
(ii) Information about the laboratory. (A) Name of laboratory.
(B) Mailing address of laboratory.
(C) Telephone and fax number of laboratory's representative.
(D) Name and address of government agency accrediting the
laboratory.
(E) Name and signature of person responsible for evaluation of the
scale and the date of signature.
(iii) Checklist. A completed checklist indicating that all
applicable technical and performance standards in appendix A to this
part and the laboratory tests in the annex to appendix A to this part
have been met.
(iv) Verification of test results. Verification that a scale meets
the laboratory evaluation and testing requirements in appendix A of
this part and each of the influence quantity and disturbance tests as
specified in the annex to appendix A to this part:
(A) Test results and data on forms supplied by NMFS;
(B) National Type Evaluation Program (NTEP) Certificates of
Conformance, test results and data for a component of a scale or for
the entire device. NTEP Certificates of Conformance, test results, and
data may be submitted only in lieu of the specific influence factor
tests conducted to obtain the NTEP Certificates of Conformance.
Additional information must be submitted to verify compliance with the
laboratory tests that are not performed under the NTEP; and/or
(C) International Organization of Legal Metrology (OIML)
Certificates of Conformance, test results and data.
(2) Inspection of at-sea scales--(i) What is an inspection? An
inspection is a visual assessment and test of a scale after it is
installed on the vessel and while the vessel is tied up at a dock and
not under power at sea to determine if the scale meets all of the
applicable performance and technical requirements in paragraph (b)(2)
of this section and in appendix A to this part. A scale will be
approved by the inspector if it meets all of the applicable performance
and technical requirements in paragraph (b)(2) of this section and
appendix A to this part.
(ii) How often must a scale be inspected? Each scale must be
inspected and approved before the vessel may participate in any fishery
requiring the weighing of catch at sea with an approved scale. Each
scale must be reinspected within 12 months of the date of the most
recent inspection.
(iii) Who may perform scale inspections? Scales must be inspected
by a scale inspector authorized by NMFS. A list of scale inspectors
authorized by NMFS is available from the Regional Administrator upon
request. NMFS authorizes two types of scale inspectors:
[[Page 5844]]
(A) Inspectors from an agency designated by NMFS. Inspectors
employed by a weights and measures agency designated by NMFS to perform
scale inspections on behalf of NMFS. Scale inspections by such
inspectors are paid for by NMFS.
(B) Inspectors from other agencies. Inspectors employed by a U.S.,
state, or local weights and measures agency other than the weights and
measures agency designated by NMFS and meeting the following
requirements:
(1) The inspector successfully completes training conducted by a
scale inspector from the weights and measures agency designated by NMFS
to perform scale inspections on behalf of NMFS. The training consists
of observing a scale inspection conducted by a scale inspector
designated by NMFS and conducting an inspection under the supervision
of a scale inspector designated by NMFS. The inspector must obtain this
training for each type of scale inspected.
(2) The inspector notifies NMFS in writing that he/she meets the
requirements of this paragraph (b)(2)(iii)(B) prior to conducting any
inspections.
(3) Inspectors from agencies other than the weights and measures
agency designated by NMFS to perform scale inspections on behalf of
NMFS must notify the Regional Administrator of the date, time, and
location of the scale inspection at least 3 working days before the
inspection is conducted so that NMFS staff may have the opportunity to
observe the inspection.
(iv) How does a vessel owner arrange for a scale inspection? The
time and place of the inspection may be arranged by contacting the
authorized scale inspectors. Vessel owners must request a scale
inspection at least 10 working days in advance of the requested
inspection by contacting an authorized scale inspector at the address
indicated on the list of authorized inspectors.
(v) Where will scale inspections be conducted? Scale inspections by
inspectors paid by NMFS will be conducted on vessels tied up at docks
in Dutch Harbor, Alaska, and in the Puget Sound area of Washington
State.
(vi) Responsibilities of the vessel owner during a scale
inspection. After the vessel owner has installed a model of scale that
is on the Regional Administrator's list of scales eligible to be
approved for weighing catch at sea, the vessel owner must:
(A) Make the vessel and scale available for inspection by a scale
inspector authorized by the Regional Administrator.
(B) Provide a copy of the scale manual supplied by the scale
manufacturer to the inspector at the beginning of the inspection.
(C) Transport test weights, test material, and equipment required
to perform the test to and from the inspector's vehicle and the
location on the vessel where the scale is installed.
(D) Apply test weights to the scale or convey test materials across
the scale, if requested by the scale inspector.
(E) Assist the scale inspector in performing the scale inspection
and testing.
(vii) Scale inspection report. A scale is approved for use when the
scale inspector completes and signs a scale inspection report form
verifying that the scale meets all of the requirements specified in
this paragraph (b)(2) and appendix A to this part. Inspectors must use
the scale inspection report form supplied by the weights and measures
agency designated by NMFS to perform scale inspections on behalf of
NMFS. The scale inspector must provide the original of this inspection
report form to the vessel owner and a copy to NMFS. NMFS will maintain
a list of all scales for which the inspection report form has been
received and that are approved for use. The vessel owner is not
required to submit the scale inspection report form to NMFS. However,
the vessel owner must maintain a copy of the report form on board the
vessel at all times when the processor or vessel is required to use a
scale approved under this section. The scale inspection report form
must be made available to the observer, NMFS personnel or an authorized
officer, upon request. When in use, scales for which a scale inspection
form has been completed and signed must also meet requirements
described in paragraphs (b)(3) through (b)(6) of this section.
(3) At-sea scale tests. The vessel owner must ensure that the
vessel operator tests each scale or scale system used to weigh total
catch one time during each 24-hour period in which fish are weighed on
the scale to verify that the scale meets the MPEs specified in this
paragraph (b)(3).
(i) Belt scales and automatic hopper scales. (A) The MPE in the
daily at-sea scale tests is plus or minus 3 percent of the known weight
of the test material.
(B) Test procedure. A material test must be conducted by weighing
at least 400 kg of fish or an alternative material supplied by the
scale manufacturer on the scale under test. The known weight of the
test material must be determined by weighing it on a platform scale
approved for use under paragraph (b)(7) of this section.
(ii) Platform and hanging scales--(A) Maximum Permissible Error.
The MPE for platform and hanging scales is plus or minus 0.5 percent of
the known weight of the test material.
(B) Test weights. Each test weight must have its weight stamped on
or otherwise permanently affixed to it. The weight of each test weight
must be certified by a National Institute of Standards and Technology
approved metrology laboratory. A copy of the laboratory certification
documents must be maintained on board the vessel at all times while the
scale is required. The amount of test weights that must be provided by
the vessel owner is specified in paragraphs (b)(3)(ii)(B)(1) and
(b)(3)(ii)(B)(2) of this section.
(1) Platform scales used as observer sampling scales or to
determine the known weight of test materials. Any combination of test
weights that will allow the scale to be tested at 10 kg, 25 kg, and 50
kg.
(2) Scales used to weigh total catch. Test weights equal to the
largest amount of fish that will be weighed on the scale in one
weighment.
(iii) Requirements for all scale tests. (A) Notify the observer at
least 15 minutes before the time that the test will be conducted, and
conduct the test while the observer is present.
(B) Conduct the scale test by placing the test material or test
weights on or across the scale and recording the following information
on the at-sea scale test report form:
(1) Vessel name;
(2) Month, day, and year of test;
(3) Time test started to the nearest minute;
(4) Known weight of test material or test weights;
(5) Weight of test material or test weights recorded by scale;
(6) Percent error as determined by subtracting the known weight of
the test material or test weights from the weight recorded on the
scale, dividing that amount by the known weight of the test material or
test weights, and multiplying by 100; and
(7) Sea conditions at the time of the scale test.
(C) Maintain the test report form on board the vessel until the end
of the fishing year during which the tests were conducted, and make the
report forms available to observers, NMFS personnel, or an authorized
officer. In addition, the scale test report forms must be retained by
the vessel owner for 3 years after the end of the fishing year during
which the tests were performed. All scale test report forms must be
signed by the vessel operator.
[[Page 5845]]
(4) Scale maintenance. The vessel owner must ensure that the vessel
operator maintains the scale in proper operating condition throughout
its use; that adjustments made to the scale are made so as to bring the
performance errors as close as practicable to a zero value; and that no
adjustment is made that will cause the scale to weigh fish
inaccurately.
(5) Printed reports from the scale. The vessel owner must ensure
that the vessel operator provides the printed reports required by this
paragraph. Printed reports from the scale must be maintained on board
the vessel until the end of the year during which the reports were made
and be made available to observers, NMFS personnel, or an authorized
officer. In addition, printed reports must be retained by the vessel
owner for 3 years after the end of the year during which the printouts
were made. All printed reports from the scale must be signed by the
vessel operator.
(i) Reports of catch weight and cumulative weight. Reports must be
printed at least once each 24-hour period in which the scale is being
used to weigh catch or before any information stored in the scale
computer memory is replaced. The haul or set number recorded on the
scale print-out must correspond with haul or set numbers recorded in
the processor's daily cumulative production logbook. Scale weights must
not be adjusted by the scale operator to account for the perceived
weight of water, mud, debris, or other materials. The information that
must be printed is described in Sections 2.3.1.8, 3.3.1.7, and 4.3.1.5
of appendix A to this part.
(ii) Printed report from the audit trail. The printed report must
include the information specified in sections 2.3.1.8, 3.3.1.7, and
4.3.1.8 of appendix A to this part. The printed report must be provided
to the authorized scale inspector at each scale inspection and must
also be printed at any time upon request of the observer, the scale
inspector, NMFS staff, or an authorized officer.
(6) Scale installation requirements. The observer must be able to
see the product on the scale and the scale indications at the same
time.
(7) Platform scales used as observer sampling scales or to
determine the known weight of test materials. Platform scales used only
as observer sampling scales or to determine the known weight of fish
for a material test of another scale are required to meet all of the
requirements of paragraph (b) of this section and appendix A to this
part except sections 4.3.1 and 4.3.1.5 of appendix A to this part
(printer) or section 4.3.1.8 (audit trail) of appendix A to this part.
3. Appendix A to part 679 is added immediately following subpart F
of part 679, before the figures and tables, to read as follows:
Appendix A to Subpart F of Part 679--Performance and Technical
Requirements for Scales Used To Weigh Catch at Sea in the Groundfish
Fisheries Off Alaska
Table of Contents
1. Introduction
2. Belt Scales
2.1 Applicability
2.2 Performance Requirements
2.2.1 Maximum Permissible Errors
2.2.1.1 Laboratory Tests
2.2.1.2 Zero Load Tests
2.2.1.3 Material Tests
2.2.2 Minimum Flow Rate (min)
2.2.3 Minimum Totalized Load (min)
2.2.4 Influence Quantities
2.2.4.1 Temperature
2.2.4.2 Power Supply
2.3 Technical Requirements
2.3.1 Indicators and Printers
2.3.1.1 General
2.3.1.2 Values Defined
2.3.1.3 Units
2.3.1.4 Value of the Scale Division
2.3.1.5 Range of Indication
2.3.1.6 Resettable and Non-resettable Values
2.3.1.7 Rate of Flow Indicator
2.3.1.8 Printed Information
2.3.1.9 Permanence of Markings
2.3.1.10 Power Loss
2.3.1.11 Adjustable Components
2.3.1.12 Audit Trail
2.3.1.13 Adjustments to Scale Weights
2.3.2 Weighing Elements
2.3.2.1 Speed Measurement
2.3.2.2 Conveyer Belt
2.3.2.3 Overload Protection
2.3.2.4 Speed Control
2.3.2.5 Adjustable Components
2.3.2.6 Motion Compensation
2.3.3 Installation Conditions
2.3.4 Marking
2.3.4.1 Presentation
2.4 Tests
2.4.1 Minimum Test Load
2.4.2 Laboratory Tests
2.4.2.1 Influence Quantity and Disturbance Tests
2.4.2.2 Zero-Load Tests
2.4.2.3 Material Tests
2.4.3 Annual Scale Inspections
2.4.3.1 Zero-Load Tests
2.4.3.2 Material Tests
3. Automatic Hopper Scales
3.1 Applicability
3.2 Performance Requirements
3.2.1 Maximum Permissible Errors
3.2.1.1 Laboratory Tests
3.2.1.2 Increasing and Decreasing Load Tests
3.2.2 Minimum Weighment (min)
3.2.3 Minimum Totalized Load (Lot)
3.2.4 Influence Quantities
3.2.4.1 Temperature
3.2.4.1.1 Operating Temperature
3.2.4.2 Power Supply
3.3 Technical Requirements
3.3.1 Indicators and Printers
3.3.1.1 General
3.3.1.2 Values Defined
3.3.1.3 Units
3.3.1.4 Value of the Scale Division
3.3.1.5 Weighing Sequence
3.3.1.6 Printing Sequence
3.3.1.7 Printed Information
3.3.1.8 Permanence of Markings
3.3.1.9 Range of Indication
3.3.1.10 Non-resettable Values
3.3.1.11 Power Loss
3.3.1.12 Adjustable Components
3.3.1.13 Audit Trail
3.3.1.14 Zero-Load Adjustment
3.3.1.14.1 Manual
3.3.1.14.2 Semi-automatic
3.3.1.15 Damping Means
3.3.1.16 Adjustments to Scale Weights
3.3.2 Interlocks and Gate Control
3.3.3 Overfill Sensor
3.3.4 Weighing Elements
3.3.4.1 Overload Protection
3.3.4.2 Adjustable Components
3.3.4.3 Motion Compensation
3.3.5 Installation Conditions
3.3.6 Marking
3.3.6.1 Presentation
3.4 Tests
3.4.1 Standards
3.4.2 Laboratory Tests
3.4.2.1 Influence Quantity and Disturbance Tests
3.4.2.2 Performance Tests
3.4.3 Annual Scale Inspections
4. Platform Scales and Hanging Scales
4.1 Applicability
4.2 Performance Requirements
4.2.1 Maximum Permissible Errors
4.2.1.1 Laboratory Tests
4.2.1.2 Increasing and Decreasing Load and Shift Tests
4.2.2 Accuracy Classes
4.2.3 Minimum Load
4.2.4 Influence Quantities
4.2.4.1 Temperature
4.2.4.1.1 Operating Temperature
4.2.4.2 Power Supply
4.3 Technical Requirements
4.3.1 Indicators and Printers
4.3.1.1 General
4.3.1.2 Values Defined
4.3.1.3 Units
4.3.1.4 Value of the Scale Division
4.3.1.5 Printed Information
4.3.1.6 Permanence of Markings
4.3.1.7 Power Loss
4.3.1.8 Adjustable Components
4.3.1.9 Zero-Load Adjustment
4.3.1.9.1 Manual
4.3.1.9.2 Semi-automatic
4.3.1.10 Damping Means
4.3.2 Weighing Elements
4.3.2.1 Overload Protection
4.3.2.2 Adjustable Components
4.3.2.3 Motion Compensation
4.3.3 Installation Conditions
4.3.4 Marking
4.3.4.1 Presentation
4.4 Tests
4.4.1 Standards
4.4.2 Laboratory Tests
4.4.2.1 Influence Quantities and Disturbance Tests
[[Page 5846]]
4.4.2.2 Performance Tests
4.4.3 Annual Scale Inspections
5. Definitions
Annex A to Appendix A to Part 679--Influence Quantity and Disturbance
Tests
A.1 General
A.2 Test considerations
A.3 Tests
A.3.1 Static Temperatures
A.3.2 Damp Heat, Steady State
A.3.3 Power Voltage Variation
A.3.4 Short Time Power Reduction
A.3.5 Bursts
A.3.6 Electrostatic Discharge
A.3.7 Electromagnetic Susceptibility
A.4 Bibliography
1. Introduction
(a) This appendix to part 679 contains the performance and
technical requirements for scales to be approved by NMFS for use to
weigh, at sea, catch from the groundfish fisheries off Alaska. The
performance and technical requirements in this document have not
been reviewed or endorsed by the National Conference on Weights and
Measures. Regulations implementing the requirements of this appendix
and additional requirements for and with respect to scales used to
weigh catch at sea are found at 50 CFR 679.28(b).
(b) Revisions, amendments, or additions to this appendix may be
made after notice and opportunity for public comments. Send requests
for revisions, amendments, or additions to the Sustainable Fisheries
Division, Alaska Region, NMFS, P.O. Box 21668, Juneau, AK 99802.
(c) Types of Scales Covered by Appendix--This appendix contains
performance and technical requirements for belt, automatic hopper,
platform, and hanging scales.
(d) Testing and Approval of Scales Used to Weigh Catch at Sea--
Scales used to weigh catch at sea are required to comply with four
categories of performance and technical requirements: (1) Type
evaluation; (2) initial inspection after installation while the
vessel is tied up at a dock and is not under power at sea; (3)
annual reinspection while the vessel is tied up at a dock and is not
under power at sea; and (4) daily at-sea tests of the scale's
accuracy. This appendix contains only the performance and technical
requirements for type evaluation and initial and annual
reinspections by an authorized scale inspector.
2. Belt Scales
2.1 Applicability. The requirements in this section apply to a
scale or scale system that employs a conveyor belt in contact with a
weighing element to determine the weight of a bulk commodity being
conveyed across the scale.
2.2 Performance Requirements--2.2.1 Maximum Permissible Errors.
For laboratory tests of a scale and initial inspections and annual
reinspections of an installed scale when the vessel is tied up at a
dock and is not under power at sea, the following maximum
permissible errors (MPEs) are specified:
2.2.1.1 Laboratory Tests. See annex A to this appendix A for
procedures for disturbance tests and influence factors.
a. Disturbances. 0.18 percent of the weight of the
load totalized.
b. Influence Factors. 0.25 percent of the weight of
the load totalized.
c. Temperature Effect at Zero Flow Rate. The difference between
the values obtained at zero flow rate taken at temperatures that
differ by 10 deg. C 0.2 deg. C must not be greater than
0.035 percent of the weight of the load totalized at the maximum
flow-rate for the time of the test.
2.2.1.2 Zero Load Tests. For zero load tests conducted in a
laboratory or on a scale installed on a vessel and conducted when
the vessel is tied up at a dock and not under power at sea,
0.1 percent of the value of the minimum totalized load
or 1 scale division (d), whichever is greater.
2.2.1.3 Material Tests. For material tests conducted in a
laboratory or on a scale installed on a vessel and conducted when
the vessel is tied up at a dock and not under power at sea,
1.0 percent of the known weight of the test material.
2.2.2 Minimum Flow Rate (Qmin). The minimum flow rate must be
specified by the manufacturer and must not be greater than 35
percent of the rated capacity of the scale in kilograms per hour
(kg/hr) or metric tons per hour (mt/hr).
2.2.3 Minimum Totalized Load (min). The minimum
totalized load must not be less than the greater of--
a. Two percent of the load totalized in 1 hour at the maximum
flow rate;
b. The load obtained at the maximum flow rate in 1 revolution of
the belt; or
c. A load equal to 800 scale divisions (d).
2.2.4 Influence Quantities. The following requirements apply to
influence factor tests conducted in the laboratory.
2.2.4.1 Temperature. A belt scale must comply with the
performance and technical requirements at a range of temperatures
from -10 deg. C to +40 deg. C. However, for special applications the
temperature range may be different, but the range must not be less
than 30 deg. C and must be so specified on the scale's descriptive
markings.
2.2.4.2 Power Supply. A belt scale must comply with the
performance and technical requirements when operated within a range
of -15 percent to +10 percent of the power supply specified on the
scale's descriptive markings.
2.3.1 Technical Requirements.
2.3.1 Indicators and Printers.
2.3.1.1 General. A belt scale must be equipped with an
indicator capable of displaying both the weight of fish in each haul
or set and the cumulative weight of all fish or other material
weighed on the scale between annual inspections (``the cumulative
weight''), a rate of flow indicator, and a printer. The indications
and printed representations must be clear, definite, accurate, and
easily read under all conditions of normal operation of the belt
scale.
2.3.1.2 Values Defined. If indications or printed
representations are intended to have specific values, these must be
defined by a sufficient number of figures, words, or symbols,
uniformly placed with reference to the indications or printed
representations and as close as practicable to the indications or
printed representations but not so positioned as to interfere with
the accuracy of reading.
2.3.1.3 Units. The weight of each haul or set must be indicated
in kilograms, and the cumulative weight must be indicated in either
kilograms or metric tons and decimal subdivisions.
2.3.1.4 Value of the Scale Division. The value of the scale
division (d) expressed in a unit of weight must be equal to 1, 2, or
5, or a decimal multiple or sub-multiple of 1, 2, or 5.
2.3.1.5 Range of Indication. The range of the weight
indications and printed values for each haul or set must be from 0
kg to 999,999 kg and for the cumulative weight must be from 0 to
99,999 metric tons.
2.3.1.6 Resettable and Non-resettable Values. The means to
indicate the weight of fish in each haul or set must be resettable
to zero. The means to indicate the cumulative weight must not be
resettable to zero without breaking a security means and must be
reset only upon direction of NMFS or an authorized scale inspector.
2.3.1.7 Rate of Flow Indicator. Permanent means must be
provided to produce an audio or visual signal when the rate of flow
is less than the minimum flow rate or greater than 98 percent of the
maximum flow rate.
2.3.1.8 Printed Information. The information printed must
include--
a. For catch weight:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The haul or set number;
iv. The month, day, year, and time (to the nearest minute)
weighing catch from the haul or set started;
v. The month, day, year, and time (to the nearest minute)
weighing catch from the haul or set ended;
vi. The total weight of catch in each haul or set;
vii. The total cumulative weight of all fish or other material
weighed on the scale; and
viii. The date and time the information is printed.
b. For the audit trail:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The date and time (to the nearest minute) that the
adjustment was made;
iv. The name or type of adjustment being made; and
v. The initial and final values of the parameter being changed.
2.3.1.9 Permanence of Markings. All required indications,
markings, and instructions must be distinct and easily readable and
must be of such character that they will not tend to become
obliterated or illegible.
2.3.1.10 Power Loss. In the event of a power failure, means
must be provided to retain in a memory the weight of fish in each
haul or set for which a printed record has not yet been made, the
cumulative weight, and the information on the audit trail.
2.3.1.11 Adjustable Components. An adjustable component that
when adjusted
[[Page 5847]]
affects the performance or accuracy of the scale must be held
securely in position and must not be capable of adjustment without
breaking a security means unless a record of the adjustment is made
on the audit trail described in 2.3.1.12.
2.3.1.12 Audit Trail. An audit trail in the form of an event
logger must be provided to document changes made using adjustable
components. The following information must be provided in an
electronic form that cannot be changed or erased by the scale
operator, can be printed at any time, and can be cleared by the
scale manufacturer's representative upon direction by NMFS or by an
authorized scale inspector:
a. The date and time (to the nearest minute) of the change;
b. The name or type of adjustment being made; and
c. The initial and final values of the parameter being changed.
2.3.1.13 Adjustments to Scale Weights. The indicators and
printer must be designed so that the scale operator cannot change or
adjust the indicated and printed weight values.
2.3.2 Weighing Elements.
2.3.2.1 Speed Measurement. A belt scale must be equipped with
means to accurately sense the belt travel and/or speed whether the
belt is loaded or empty.
2.3.2.2 Conveyer Belt. The weight per unit length of the
conveyor belt must be practically constant. Belt joints must be such
that there are no significant effects on the weighing results.
2.3.2.3 Overload Protection. The load receiver must be equipped
with means so that an overload of 150 percent or more of the
capacity does not affect the metrological characteristics of the
scale.
2.3.2.4 Speed Control. The speed of the belt must not vary by
more than 5 percent of the nominal speed.
2.3.2.5 Adjustable Components. An adjustable component that can
affect the performance of the belt scale must be held securely in
position and must not be capable of adjustment without breaking a
security means.
2.3.2.6 Motion Compensation. A belt scale must be equipped with
automatic means to compensate for the motion of a vessel at sea so
that the weight values indicated are within the MPEs. Such means
shall be a reference load cell and a reference mass weight or other
equally effective means. When equivalent means are utilized, the
manufacturer must provide NMFS with information demonstrating that
the scale can weigh accurately at sea.
2.3.3 Installation Conditions. A belt scale must be rigidly
installed in a level condition.
2.3.4 Marking. A belt scale must be marked with the--
a. Name, initials, or trademark of the manufacturer or
distributer;
b. Model designation;
c. Non-repetitive serial number;
d. Maximum flow rate (Qmax);
e. Minimum flow rate (Qmin);
f. Minimum totalized load (min);
g. Value of a scale division (d);
h. Belt speed;
i. Weigh length;
j. Maximum capacity (Max);
k. Temperature range (if applicable); and
l. Mains voltage.
2.3.4.1 Presentation. The markings must be reasonably permanent
and of such size, shape, and clarity to provide easy reading in
normal conditions of use. They must be grouped together in a place
visible to the operator.
2.4 Tests.
2.4.1 Minimum Test Load. The minimum test load must be the
greater of--
a. 2 percent of the load totalized in 1 hour at the maximum flow
rate;
b. The load obtained at maximum flow rate in one revolution of
the belt; or
c. A load equal to 800 scale divisions.
2.4.2 Laboratory Tests.
2.4.2.1 Influence Quantity and Disturbance Tests. Tests must be
conducted according to annex A and the results of these tests must
be within the values specified in section 2.2.1.1.
2.4.2.2 Zero-Load Tests. A zero-load test must be conducted for
a time equal to that required to deliver the minimum totalized load
(``min). At least two zero-load tests must be conducted prior to a
material test. The results of these tests must be within the values
specified in section 2.2.1.2.
2.4.2.3 Material Tests. At least one material test must be
conducted with the weight of the material or simulated material
equal to or greater than the minimum test load. The results of these
tests must be within the values specified in section 2.2.1.3.
2.4.3 Annual Inspections.
2.4.3.1 Zero-Load Tests. A zero-load test must be conducted for
a time equal to that required to deliver the minimum totalized load
(min). At least one zero-load test must be conducted prior
to each material test. The results of this test must be within the
values specified in section 2.2.1.2.
2.4.3.2 Material Tests. At least one material or simulated
material test must be conducted with the weight of the material or
simulated material equal to or greater than the minimum test load.
The results of these tests must be within the values specified in
section 2.2.1.3.
3. Automatic Hopper Scales
3.1 Applicability. The requirements in this section apply to a
scale or scale system that is designed for automatic weighing of a
bulk commodity in predetermined amounts.
3.2 Performance Requirements.
3.2.1 Maximum Permissible Errors. For laboratory tests of a
scale and initial inspection and annual reinspections of an
installed scale when the vessel is tied up at a dock and is not
under power at sea, the following MPEs are specified:
3.2.1.1 Laboratory Tests. See annex A to appendix A for
procedures for disturbance test and influence factors.
a. Disturbances. Significant fault (sf) (scale
division).
b. Influence Factors. 1 percent of test load.
3.2.1.2 Increasing and Decreasing Load Tests. For increasing
and decreasing load tests conducted in a laboratory or on a scale
installed on a vessel tied up at a dock and not under power at sea,
1.0 percent of the test load.
3.2.2 Minimum Weighment (min). The minimum weighment
must not be less than 20 percent of the weighing capacity, or a load
equal to 100 scale intervals (d), except for the final weighment of
a lot.
3.2.3 Minimum Totalized Load (Lot). The minimum totalized load
must not be less than 4 weighments.
3.2.4 Influence Quantities. The following requirements apply to
influence factor tests conducted in the laboratory:
3.2.4.1 Temperature. A hopper scale must comply with the
metrological and technical requirements at temperatures from -
10 deg. C to +40 deg. C. However, for special applications the
temperature range may be different, but the range must not be less
than 30 deg. C and must be so specified on the scale's descriptive
markings.
3.2.4.1.1 Operating Temperature. A hopper scale must not
display or print any usable weight values until the operating
temperature necessary for accurate weighing and a stable zero-
balance condition have been attained.
3.2.4.2 Power Supply. A hopper scale must comply with the
performance and technical requirements when operated within -15
percent to +10 percent of the power supply specified on the scale's
descriptive markings.
3.3 Technical Requirements.
3.3.1 Indicators and Printers.
3.3.1.1 General. a. A hopper scale must be equipped with an
indicator and printer that indicates and prints the weight of each
load and a no-load reference value; and a printer that prints the
total weight of fish in each haul or set and the total cumulative
weight of all fish and other material weighed on the scale between
annual inspections (``the cumulative weight''). The indications and
printed information must be clear, definite, accurate, and easily
read under all conditions of normal operation of the hopper scale.
b. A no-load reference value may be a positive or negative value
in terms of scale divisions or zero. When the no-load reference
value is zero, the scale must return to a zero indication (within
0.5 scale division) when the load receptor (hopper) is
empty following the discharge of all loads, without the intervention
of either automatic or manual means.
3.3.1.2 Values Defined. If indications or printed
representations are intended to have specific values, these must be
defined by a sufficient number of figures, words, or symbols,
uniformly placed with reference to the indications or printed
representations and as close as practicable to the indications or
printed representations but not so positioned as to interfere with
the accuracy of reading.
3.3.1.3 Units. The weight of each haul or set must be indicated
in kilograms, and the cumulative weight must be indicated in either
kilograms or metric tons and decimal subdivisions.
3.3.1.4 Value of the Scale Division. The value of the scale
division (d) expressed in a unit of weight must be equal to 1, 2, or
5, or a decimal multiple or sub-multiple of 1, 2, or 5.
3.3.1.5 Weighing Sequence. For hopper scales used to receive
(weigh in), the no-load
[[Page 5848]]
reference value must be determined and printed only at the beginning
of each weighing cycle. For hopper scales used to deliver (weigh
out), the no-load reference value must be determined and printed
only after the gross-load weight value for each weighing cycle has
been indicated and printed.
3.3.1.6 Printing Sequence. Provision must be made so that all
weight values are indicated until the completion of the printing of
the indicated values.
3.3.1.7 Printed Information. The information printed must
include--
a. For catch weight:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The haul or set number;
iv. The month, day, year, and time (to the nearest minute)
weighing catch from the haul or set started;
v. The month, day, year, and time (to the nearest minute)
weighing catch from the haul or set ended;
vi. The total weight of catch in each haul or set;
vii. The total cumulative weight of all fish or other material
weighed on the scale; and
viii. The date and time the information is printed.
b. For the audit trail:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The date and time (to the nearest minute) of the change;
iv. The name or type of adjustment being made; and
v. The initial and final values of the parameter being changed.
3.3.1.8 Permanence of Markings. All required indications,
markings, and instructions must be distinct and easily readable and
must be of such character that they will not tend to become
obliterated or illegible.
3.3.1.9 Range of Indication. The range of the weight
indications and printed values for each haul or set must be from 0
kg to 999,999 kg and for the cumulative weight must be from 0 to
99,999 metric tons.
3.3.1.10 Non-Resettable Values. The cumulative weight must not
be resettable to zero without breaking a security means and must be
reset only upon direction by NMFS or by an authorized scale
inspector.
3.3.1.11 Power Loss. In the event of a power failure, means
must be provided to retain in a memory the weight of fish in each
haul or set for which a printed record has not yet been made, the
cumulative weight, and the information on the audit trail described
in 3.3.1.13.
3.3.1.12 Adjustable Components. An adjustable component that,
when adjusted, affects the performance or accuracy of the scale must
not be capable of adjustment without breaking a security means,
unless a record of the adjustment is made on the audit trail
described in 3.3.1.13.
3.3.1.13 Audit Trail. An audit trail in the form of an event
logger must be provided to document changes made using adjustable
components. The following information must be provided in an
electronic form that cannot be changed or erased by the scale
operator, can be printed at any time, and can be cleared by the
scale manufacturer's representative upon direction of NMFS or by an
authorized scale inspector:
a. The date and time (to the nearest minute) of the change;
b. The name or type of adjustment being made; and
c. The initial and final values of the parameter being changed.
3.3.1.14 Zero-Load Adjustment. A hopper scale must be equipped
with a manual or semi-automatic means that can be used to adjust the
zero-load balance or no-load reference value.
3.3.1.14.1 Manual. A manual means must be operable or
accessible only by a tool outside of, or entirely separate from,
this mechanism or enclosed in a cabinet.
3.3.1.14.2 Semi-Automatic. A semi-automatic means must be
operable only when the indication is stable within 1
scale division and cannot be operated during a weighing cycle
(operation).
3.3.1.15 Damping Means. A hopper scale must be equipped with
effective automatic means to bring the indications quickly to a
readable stable equilibrium. Effective automatic means must also be
provided to permit the recording of weight values only when the
indication is stable within plus or minus one scale division.
3.3.1.16 Adjustments to Scale Weights. The indicators and
printer must be designed so that the scale operator cannot change or
adjust the indicated and printed weight values.
3.3.2 Interlocks and Gate Control. A hopper scale must have
operating interlocks so that--
a. Product cannot be weighed if the printer is disconnected or
subject to a power loss;
b. The printer cannot print a weight if either of the gates
leading to or from the weigh hopper is open;
c. The low paper sensor of the printer is activated;
d. The system will operate only in the sequence intended; and
e. If the overfill sensor is activated, this condition is
indicated to the operator and is printed.
3.3.3 Overfill Sensor. The weigh hopper must be equipped with
an overfill sensor that will cause the feed gate to close, activate
an alarm, and stop the weighing operation until the overfill
condition has been corrected.
3.3.4 Weighing Elements.
3.3.4.1 Overload Protection. The weigh hopper must be equipped
with means so that an overload of 150 percent or more of the
capacity of the hopper does not affect the metrological
characteristics of the scale.
3.3.4.2 Adjustable Components. An adjustable component that can
affect the performance of the hopper scale must be held securely in
position and must not be capable of adjustment without breaking a
security means.
3.3.4.3 Motion Compensation. A hopper scale must be equipped
with automatic means to compensate for the motion of a vessel at sea
so that the weight values indicated are within the MPEs. Such means
shall be a reference load cell and a reference mass weight or other
equally effective means. When equivalent means are utilized, the
manufacturer must provide NMFS with information demonstrating that
the scale can weigh accurately at sea.
3.3.5 Installation Conditions. A hopper scale must be rigidly
installed in a level condition.
3.3.6 Marking. A hopper scale must be marked with the
following:
a. Name, initials, or trademark of the manufacturer or
distributer;
b. Model designation;
c. Non-repetitive serial number;
d. Maximum capacity (Max);
e. Minimum capacity (min);
f. Minimum totalized load (min);
g. Minimum weighment;
h. Value of the scale division (d);
i. Temperature range (if applicable); and
j. Mains voltage.
3.3.6.1 Presentation. Descriptive markings must be reasonably
permanent and grouped together in a place visible to the operator.
3.4 Tests.
3.4.1 Standards. The error of the standards used must not
exceed 25 percent of the MPE to be applied.
3.4.2 Laboratory Tests.
3.4.2.1 Influence Quantity and Disturbance Tests. Tests must be
conducted according to annex A and the results of these tests must
be within the values specified in section 3.2.1.1.
3.4.2.2 Performance Tests. Performance tests must be conducted
as follows:
a. Increasing load test. At least five increasing load tests
must be conducted with test loads at the minimum load, at a load
near capacity, and at 2 or more critical points in between; and
b. Decreasing load test. A decreasing load test must be
conducted with a test load approximately equal to one-half capacity
when removing the test loads of an increasing load test.
3.4.3 Annual Inspections.
At least two increasing load tests and two decreasing load tests
must be conducted as specified in 3.4.2.2. Additionally, tests must
be conducted with test loads approximately equal to the weight of
loads at which the scale is normally used.
4. Platform Scales and Hanging Scales
4.1 Applicability. The requirements in this section apply to
platform and hanging scales used to weigh total catch. Platform
scales used only as observer sampling scales or to determine the
known weight of fish for a material test of another scale are not
required to have a printer under sections 4.3.1 and 4.3.1.5 or an
audit trail under section 4.3.1.8.
4.2 Performance Requirements.
4.2.1 Maximum Permissible Errors. For laboratory tests of a
scale and initial inspection and annual reinspections of an
installed scale while the vessel is tied up at a dock and is not
under power at sea, the following MPEs are specified:
4.2.1.1 Laboratory Tests. See annex A to this appendix A for
procedures for disturbance tests and influence factors.
[[Page 5849]]
a. Disturbances. Significant fault (1 scale
division); and
b. Influence Factors. See Table 1 in section 4.2.1.2.
4.2.1.2 Increasing and Decreasing Load and Shift Tests.
Increasing and decreasing load and shift tests conducted in a
laboratory or on a scale installed on a vessel while the vessel is
tied up at a dock and is not under power at sea, see Table 1 as
follows:
Table 1.--Influence Factors
------------------------------------------------------------------------
Test load in scale divisions (d) Maximum
------------------------------------------------------------ permissible
Class III \1\ Class IIII error (d)
------------------------------------------------------------------------
0 < m\2\ 500........... 0 < m 50.. 0.5
500 < m 2000........... 50 < m 200 1.0
2000 < m........................... 200 < m............... 1.5
------------------------------------------------------------------------
\1\ Scale accuracy classes are defined in section 4.2.2, table 2.
\2\ Mass or weight of the test load in scale divisions.
4.2.2 Accuracy Classes. Scales are divided into two accuracy
classes, class III and class IIII. The accuracy class of a scale is
designated by the manufacturer. The design of each accuracy class
with respect to number of scale divisions (n) and the value of the
scale division (d) is specified according to table 2:
Table 2.--Accuracy Classes
------------------------------------------------------------------------
Number of scale
Value of scale division divisions (n)
Accuracy class (d) ---------------------
Minimum Maximum
------------------------------------------------------------------------
III................... 5 g or greater 500 10,000
IIII.................. 5 g or greater 100 1,000
------------------------------------------------------------------------
4.2.3 Minimum Load: For a Class III scale, 20d; for a Class
IIII scale, 10d.
4.2.4 Influence Quantities. The following requirements apply to
influence factor tests conducted in the laboratory.
4.2.4.1 Temperature. A scale must comply with the performance
and technical requirements at temperatures from -10 deg. C to
+40 deg. C. However, for special applications the temperature range
may be different, but the range must not be less than 30 deg. C and
must be so specified on the descriptive markings.
4.2.4.1.1 Operating Temperature. A scale must not display or
print any usable weight values until the operating temperature
necessary for accurate weighing and a stable zero-balance condition
have been attained.
4.2.4.2 Power Supply. A scale must comply with the performance
and technical requirements when operated within -15 percent to +10
percent of the power supply specified on the scale's descriptive
markings.
4.3 Technical Requirements.
4.3.1 Indicators and Printers.
4.3.1.1 General. A scale must be equipped with an indicator and
a printer. The indications and printed information must be clear,
definite, accurate, and easily read under all conditions of normal
operation of the scale.
4.3.1.2 Values Defined. If indications or printed
representations are intended to have specific values, these must be
defined by a sufficient number of figures, words, or symbols,
uniformly placed with reference to the indications or printed
representations and as close as practicable to the indications or
printed representations but not so positioned as to interfere with
the accuracy of reading.
4.3.1.3 Units. The weight units indicated must be in terms of
kilograms and decimal subdivisions.
4.3.1.4 Value of the Scale Division. The value of the scale
division (d) expressed in a unit of weight must be equal to 1, 2, or
5, or a decimal multiple or sub-multiple of 1, 2, or 5.
4.3.1.5 Printed Information. The information printed must
include--
a. For catch weight:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The haul or set number;
iv. The month, day, year, and time (to the nearest minute) of
weighing; and
v. Net weight of the fish.
b. For the audit trail:
i. The vessel name;
ii. The Federal fisheries or processor permit number of the
vessel;
iii. The date and time (to the nearest minute) of the change;
iv. The name or type of adjustment being made; and
v. The initial and final values of the parameter being changed.
4.3.1.6 Permanence of Markings. All required indications,
markings, and instructions must be distinct and easily readable and
must be of such character that they will not tend to become
obliterated or illegible.
4.3.1.7 Power Loss. In the event of a power failure, means must
be provided to retain in a memory the weight of the last weighment
if it is a non-repeatable weighment.
4.3.1.8 Adjustable Components.
a. An adjustable component that, when adjusted, affects the
performance or accuracy of the scale must be held securely in
position and must not be capable of adjustment without breaking a
security means.
b. An audit trail in the form of an event logger must be
provided to document changes made using adjustable components. The
following information must be provided in an electronic form that
cannot be changed or erased by the scale operator, can be printed at
any time, and can be cleared by the scale manufacturer's
representative upon direction of NMFS or an authorized scale
inspector:
i. The date and time (to the nearest minute) of the change;
ii. The name or type of adjustment being made; and
iii. The initial and final values of the parameter being
changed.
4.3.1.9 Zero-Load Adjustment. A scale must be equipped with a
manual or semi-automatic means that can be used to adjust the zero-
load balance or no-load reference value.
4.3.1.9.1 Manual. A manual means must be operable or accessible
only by a tool outside of or entirely separate from this mechanism
or enclosed in a cabinet.
4.3.1.9.2 Semi-automatic. A semi-automatic means must meet the
provisions of 4.3.1.8 or must be operable only when the indication
is stable within 1 scale division and cannot be operated
during a weighing cycle (operation).
4.3.1.10 Damping Means. A scale must be equipped with effective
automatic means to bring the indications quickly to a readable
stable equilibrium. Effective automatic means must also be provided
to permit the recording of weight values only when the indication is
stable within plus or minus one scale division.
4.3.2 Weighing Elements.
4.3.2.1 Overload Protection. The scale must be so designed that
an overload of 150 percent or more of the capacity does not affect
the metrological characteristics of the scale.
4.3.2.2 Adjustable Components. An adjustable component that can
affect the performance of the scale must be held securely in
position and must not be capable of adjustment without breaking a
security means.
4.3.2.3 Motion Compensation. A platform scale must be equipped
with automatic means to compensate for the motion of a vessel at sea
so that the weight values indicated are within the MPEs. Such means
shall be a reference load cell and a reference mass weight or other
equally effective means. When equivalent means are utilized, the
manufacturer must provide NMFS with information demonstrating that
the scale can weigh accurately at sea.
4.3.3 Installation Conditions. A platform scale must be rigidly
installed in a level condition. When in use, a hanging scale must be
freely suspended from a fixed support or a crane.
4.3.4 Marking. A scale must be marked with the following:
a. Name, initials, or trademark of the manufacturer or
distributor;
b. Model designation;
c. Non-repetitive serial number;
d. Accuracy class (III or IIII);
e. Maximum capacity (Max);
f. Minimum capacity (min);
g. Value of a scale division (d);
h. Temperature range (if applicable); and
i. Mains voltage.
4.3.4.1 Presentation. Descriptive markings must be reasonably
permanent and grouped together in a place visible to the operator.
4.4 Tests.
4.4.1 Standards. The error of the standards used must not
exceed 25 percent of the MPE applied.
4.4.2 Laboratory Tests.
4.4.2.1 Influence Quantities and Disturbance Tests. Tests must
be conducted according to annex A to this appendix A, and the
results of these tests must be within the values specified in
section 4.2.1.1.
4.4.2.2 Performance Tests. Performance tests must be conducted
as follows:
a. Increasing load test. At least five increasing load tests
must be conducted with
[[Page 5850]]
test loads at the minimum load, at a load near capacity, and at 2 or
more critical points in between.
b. Shift test (platform scales only). A shift test must be
conducted during the increasing load test at one-third capacity test
load centered in each quadrant of the platform.
c. Decreasing load test. A decreasing load test must be
conducted with a test load approximately equal to one-half capacity
when removing the test loads of an increasing load test.
4.4.3 Annual Scale Inspections.
At least two increasing load tests, shift tests, and decreasing
load tests must be conducted as specified in section 4.4.2.2.
Additionally tests must be conducted with test loads approximately
equal to the weight of loads at which the scale is normally used.
The results of all tests must be as specified in Table 1 in section
4.2.1.2.
5. Definitions
Adjustable component--Any component that, when adjusted, affects
the performance or accuracy of the scale, e.g., span adjustment or
automatic zero-setting means. Manual or semi-automatic zero-setting
means are not considered adjustable components.
Audit trail--An electronic count and/or information record of
the changes to the values of the calibration or configuration
parameters of a scale.
Automatic hopper scale--A hopper scale adapted to the automatic
weighing of a bulk commodity (fish) in predetermined amounts.
Capacities vary from 20 kg to 50 mt. It is generally equipped with a
control panel, with functions to be set by an operator, including
the start of an automatic operation. (See definition of hopper
scale).
Belt scale--A scale that employs a conveyor belt in contact with
a weighing element to determine the weight of a bulk commodity being
conveyed. It is generally a part of a system consisting of an input
conveyor, the flow scale, and an output conveyor. The conveyor belt
may be constructed of various materials, including vulcanized
rubber, canvas, and plastic. The capacity is generally specified in
terms of the amount of weight that can be determined in a specified
time, and can vary from, for example, 1 ton per hour to 100 or more
tons per hour. An operator generally directs the flow of product
onto the input conveyor.
Calibration mode--A means by which the span of a scale can be
adjusted by placing a known ``test weight'' on the scale and
manually operating a key on a key board.
Disturbances--An influence that may occur during the use of a
scale but is not within the rated operating conditions of the scale.
Event logger--A form of audit trail containing a series of
records where each record contains the identification of the
parameter that was changed, the time and date when the parameter was
changed, and the new value of the parameter.
Final weighment--The last partial load weighed on a hopper scale
that is part of the weight of many loads.
Hanging scale--A scale that is designed to weigh a load that is
freely suspended from an overhead crane or it may be permanently
installed in an overhead position. The load receiver may be a part
of the scale such as a pan suspended on chains, or simply a hook
that is used to ``pick-up'' the container of the commodity to be
weighed. The technology employed may be mechanical, electro-
mechanical, or electronic. The loads can be applied either manually
or by such means as a crane.
Hopper scale--A scale designed for weighing individual loads of
a bulk commodity (fish). The load receiver is a cylindrical or
rectangular container mounted on a weighing element. The weighing
element may be mechanical levers, a combination of levers and a load
cell, or all load cells. The capacity can vary from less than 20 kg
to greater than 50 mt. The loads are applied from a bulk source by
such means as a conveyor or storage hopper. Each step of the
weighing process, that is the loading and unloading of the weigh
hopper, is controlled by an operator.
Indicator--That part of a scale that indicates the quantity that
is being weighed.
Influence factor--A value of an influence quantity, e.g.,
10 deg., that specifies the limits of the rated operating conditions
of the scale.
Influence quantity--A quantity that is not the subject of the
measurement but which influences the measurement obtained within the
rated operating conditions of the scale.
Influence quantity and disturbance tests--Tests conducted in a
laboratory to determine the capability of the scale under test to
perform correctly in the environmental influences in which they are
used and when subjected to certain disturbances that may occur
during the use of the scale.
Initial verification--The first evaluation (inspection and test)
of a production model of a weighing instrument that has been type
evaluated to determine that the production model is consistent with
the model that had been submitted for type evaluation.
Known weight test--A test in which the load applied is a test
weight with a known value simulating the weight of the material that
is usually weighed.
Load receiver--That part of the scale in which the quantity is
placed when being weighed.
Material test--A test using a material that is the same or
similar to the material that is usually weighed, the weight of which
has been determined by a scale other than the scale under test.
Maximum flow-rate--The maximum flow-rate of material specified
by the manufacturer at which a belt scale can perform correctly.
Minimum flow-rate--The minimum flow-rate specified by the
manufacturer at which a belt scale can perform correctly.
Minimum load--The smallest weight load that can be determined by
the scale that is considered to be metrologically acceptable.
Minimum totalized load--The smallest weight load that can be
determined by a belt scale that is considered to be metrologically
acceptable.
Minimum weighment--The smallest weight that can be determined by
a hopper scale that is considered to be metrologically acceptable.
Motion compensation--The means used to compensate for the motion
of the vessel at sea.
No-load reference value--A weight value obtained by a hopper
scale when the load receiver (hopper) is empty of the product that
was or is to be weighed.
Non-repeatable weighment--A process where the product after
being weighed is disposed of in such a manner that it cannot be
retrieved to be reweighed.
Number of scale divisions (n)--The number of scale divisions of
a scale in normal operation. It is the quotient of the scale
capacity divided by the value of the scale division. n=Max/d
Performance requirements--A part of the regulations or standards
that applies to the weighing performance of a scale, e.g., MPEs.
Performance test--A test conducted to determine that the scale
is performing within the MPE applicable.
Periodic verification--A verification of a weighing instrument
at an interval that is specified by regulation or administrative
ruling.
Platform scale--A scale by the nature of its physical size,
arrangement of parts, and relatively small capacity (generally 220
kg or less) that is adapted for use on a bench or counter or on the
floor. A platform scale can be self contained, that is, the
indicator and load receiver and weighing elements are all comprised
of a single unit, or the indicator can be connected by cable to a
separate load receiver and weighing element. The technology used may
be mechanical, electro-mechanical, or electronic. Loads are applied
manually.
Rated capacity--The maximum flow-rate in terms of weight per
unit time specified by the manufacturer at which a belt scale can
perform correctly.
Scale division (d)--The smallest digital subdivision in units of
mass that is indicated by the weighing instrument in normal
operation.
Sealing--A method used to prevent the adjustment of certain
operational characteristics or to indicate that adjustments have
been made to those operational characteristics.
Security seals or means--A physical seal such as a lead and wire
seal that must be broken in order to change the operating or
performance characteristics of the scale.
Significant fault--An error greater than the value specified for
a particular scale. For a belt scale: A fault greater than 0.18
percent of the weight value equal to the minimum totalized load. For
all other scales: 1 scale division (d). A significant fault does not
include faults that result from simultaneous and mutually
independent causes in the belt scale; faults that imply the
impossibility of performing any measurement; transitory faults that
are momentary variations in the indications that cannot be
interpreted, memorized, or transmitted as a measurement result;
faults so serious that they will inevitably be noticed by those
interested in the measurement.
Simulated material test--A test in which the load applied is
test material simulating the weight of the material that is usually
weighed.
[[Page 5851]]
Simulated test--A test in which the weight indications are
developed by means other than weight, e.g., a load cell simulator.
Stationary installation--An installation of a scale in a
facility on land or a vessel that is tied-up to a dock or in dry
dock.
Subsequent verification--Any evaluation of a weighing instrument
following the initial verification.
Suitability for use--A judgement that must be made that certain
scales by nature of their design are appropriate for given weighing
applications.
Technical requirements--A part of the regulations or standards
that applies to the operational functions and characteristics of a
scale, e.g., capacity, scale division, tare.
Testing laboratory--A facility for conducting type evaluation
examinations of a scale that can establish its competency and
proficiency by such means as ISO Guide 25, ISO 9000, EN 45011,
NVLAP, NTEP.
Type evaluation--A process for evaluating the compliance of a
weighing instrument with the appropriate standard or regulation.
User requirements--A part of the regulations or standards that
applies to the operator/owner of the scale.
Weighment--A single complete weighing operation.
Annex A to Appendix A to Part 679--Influence Quantity and Disturbance
Tests
A.1 General--Included in this annex are tests that are intended
to ensure that electronic scales can perform and function as
intended in the environment and under the conditions specified. Each
test indicates, where appropriate, the reference condition under
which the intrinsic error is determined.
A.2 Test Considerations
A.2.1 All electronic scales of the same category must be
subjected to the same performance test program.
A.2.2 Tests must be carried out on fully operational equipment
in its normal operational state. When equipment is connected in
other than a normal configuration, the procedure must be mutually
agreed to by NMFS and the applicant.
A.2.3 When the effect of one factor is being evaluated, all
other factors must be held relatively constant, at a value close to
normal. The temperature is deemed to be relatively constant when the
difference between the extreme temperatures noted during the test
does not exceed 5 deg. C and the variation over time does not exceed
5 deg. C per hour.
A.2.4 Before the start of a test, the equipment under test (EUT)
must be energized for a period of time at least equal to the warm-up
time specified by the manufacturer. The EUT must remain energized
throughout the duration of the test.
A.3 Tests
------------------------------------------------------------------------
Characteristics Conditions
Test under test applied
------------------------------------------------------------------------
A.3.1 Static temperatures....... Influence factor.. MPE
A.3.2 Damp heat, steady state... Influence factor.. MPE
A.3.3 Power voltage variation... Influence factor.. MPE
A.3.4 Short time power reduction Disturbance....... sf
A.3.5 Bursts.................... Disturbance....... sf
A.3.6 Electrostatic discharge... Disturbance....... sf
A.3.7 Electromagnetic Disturbance....... sf
susceptibility.
------------------------------------------------------------------------
A.3 Tests
A.3.1 Static Temperatures
Test method: Dry heat (non condensing) and cold.
Object of the test: To verify compliance with the applicable MPE
under conditions of high and low temperature.
Reference to standard: See Bibliography (1).
Test procedure in brief: The test consists of exposure of the
EUT to the high and low temperatures specified in section 2.2.4.1
for belt scales, section 3.2.4.1 for automatic hopper scales, and
section 4.2.3.1 for platform scales and hanging scales, under ``free
air'' condition for a 2-hour period after the EUT has reached
temperature stability. The EUT must be tested during a weighing
operation consisting of:
For belt scales--the totalization of the
, 2 times each at
approximately the minimum flow rate, an intermediate flow rate, and
the maximum flow rate.
For platform, hanging, and automatic hopper scales--tested with
at least five different test loads or simulated loads under the
following conditions:
a. At a reference temperature of 20 deg. C following
conditioning.
b. At the specified high temperature, 2 hours after achieving
temperature stabilization.
c. At the specified low temperature, 2 hours after achieving
temperature stabilization.
d. At a temperature of 5 deg. C, 2 hours after achieving
temperature stabilization.
e. After recovery of the EUT at the reference temperature of
20 deg. C.
Test severities: Duration: 2 hours.
Number of test cycles: At least one cycle.
Maximum allowable variations:
a. All functions must operate as designed.
b. All indications must be within the applicable MPEs.
Conduct of test: Refer to the International Electrotechnical
Commission (IEC) Publications mentioned in section A.4 Bibliography
(a) for detailed test procedures.
Supplementary information to the IEC test procedures.
Preconditioning: 16 hours.
Condition of EUT: Normal power supplied and ``on'' for a time
period equal to or greater than the warm-up time specified by the
manufacturer. Power is to be ``on'' for the duration of the test.
Adjust the EUT as close to a zero indication as practicable prior to
the test.
Test Sequence:
a. Stabilize the EUT in the chamber at a reference temperature
of 20 deg. C. Conduct the tests as specified in the test procedure
in brief and record the following data:
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Test load,
v. Indication,
vi. Errors, and
vii. Functions performance.
b. Increase the temperature in the chamber to the high
temperature specified. Check by measurement that the EUT has reached
temperature stability and maintain the temperature for 2 hours.
Following the 2 hours, repeat the tests and record the test data
indicated in this A.3.1 Test Sequence section.
c. Reduce the temperature in the chamber as per the IEC
procedures to the specified low temperature. After temperature
stabilization, allow the EUT to soak for 2 hours. Following the 2
hours, repeat the tests and record the test data as indicated in
this A.3.1 Test Sequence section.
d. Raise the temperature in the chamber as per the IEC
procedures to 5 deg. C. After temperature stabilization, allow the
EUT to soak for 2 hours. Following the 2 hours, repeat the tests and
record the test data as indicated in this A.3.1 Test Sequence
section. Note: This test relates to a -10 deg. C to +40 deg. C
range. For special ranges, it may not be necessary.
e. Raise the temperature in the chamber as per the IEC
procedures and to the 20 deg. C reference temperature. After
recovery, repeat the tests and record the test data as indicated in
this A.3.1 Test Sequence section.
A.3.2 Damp Heat, Steady State
Test method: Damp heat, steady state.
Object of the test: To verify compliance with the applicable MPE
under conditions of high humidity and constant temperature.
Reference to standard: See section A.4 Bibliography (b)
Test procedure in brief: The test consists of exposure of the
EUT to a constant temperature at the upper limit of the temperature
range and of a constant relative humidity of 85 percent for a 2-day
period. The EUT must be tested during a weighing operation
consisting of the following:
For belt scales--the totalization of the
, 2 times each at
approximately the minimum
[[Page 5852]]
flow rate, an intermediate flow rate, and the maximum flow rate.
For platform, hanging, and automatic hopper scales--tested with
at least five different test loads or simulated loads at a reference
temperature of 20 deg. C and a relative humidity of 50 percent
following conditioning, and at the upper limit temperature and a
relative humidity of 85 percent 2 days following temperature and
humidity stabilization.
Test severities:
Temperature: upper limit.
Humidity: 85 percent (non-condensing).
Duration: 2 days.
Number of test cycles: At least one test.
Maximum Allowable Variations:
a. All functions must operate as designed.
b. All indications must be within the applicable MPE.
Conduct of the test: Refer to the IEC Publications mentioned in
section A.4 Bibliography (b) for detailed test procedures.
Supplementary information to the IEC test procedures.
Preconditioning: None required.
Condition of EUT:
a. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
Power is to be ``on'' for the duration of the test.
b. The handling of the EUT must be such that no condensation of
water occurs on the EUT.
c. Adjust the EUT as close to a zero indication as practicable
prior to the test.
Test Sequence:
a. Allow 3 hours for stabilization of the EUT at a reference
temperature of 20 deg. C and a relative humidity of 50 percent.
Following stabilization, conduct the tests as specified in the test
procedures in brief and record the following data:
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Test load,
v. Indication,
vi. Errors, and
vii. Functions performance.
b. Increase the temperature in the chamber to the specified high
temperature and a relative humidity of 85 percent. Maintain the EUT
at no load for a period of 2 days. Following the 2 days, repeat the
tests and record the test data as indicated in this A.3.2 Test
Sequence section.
c. Allow full recovery of the EUT before any other tests are
performed.
A.3.3 Power Voltage Variation
A.3.3.1 AC Power Supply
Test method: Variation in AC mains power supply (single phase).
Object of the test: To verify compliance with the applicable
MPEs under conditions of varying AC mains power supply.
Reference to standard: See section A.4 Bibliography (c).
Test procedure in brief: The test consists of subjecting the EUT
to AC mains power during a weighing operation consisting of the
following:
For belt scales--while totalizing the
at the maximum flow
rate.
For platform, hanging, and automatic hopper scales--at no load
and a test load between 50 percent and 100 percent of weighing
capacity.
Test severities: Mains voltage:
Upper limit U (nom) +10 percent.
Lower limit U (nom) -15 percent.
Number of test cycles: At least one cycle.
Maximum allowable variations:
a. All functions must operate correctly.
b. All indications must be within MPEs specified in sections 2,
3, or 4 of this appendix to part 679.
Conduct of the test:
Preconditioning: None required.
Test equipment:
a. Variable power source,
b. Calibrated voltmeter, and
c. Load cell simulator, if applicable.
Condition of EUT:
a. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
b. Adjust the EUT as close to a zero indication as practicable
prior to the test.
Test sequence:
a. Stabilize the power supply at nominal voltage 2
percent.
b. Conduct the tests specified in the test procedure in brief
and record the following data:
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Power supply voltage,
v. Test load,
vi. Indications,
vii. Errors, and
viii. Functions performance.
c. Reduce the power supply to -15 percent nominal.
d. Repeat the test and record the test data as indicated in this
A.3.3 Test Sequence section.
e. Increase the power supply to +10 percent nominal.
f. Repeat the test and record the test data as indicated in this
A.3.3 Test Sequence section.
g. Unload the EUT and decrease the power supply to nominal power
2 percent.
h. Repeat the test and record the test data as indicated in this
A.3.3 Test Sequence section.
Note: In case of three-phase power supply, the voltage variation
must apply for each phase successively. Frequency variation applies
to all phases simultaneously.
A.3.3.2 DC Power Supply
Under consideration.
A.3.4 Short Time Power Reduction
Test method: Short time interruptions and reductions in mains
voltage.
Object of the test: To verify compliance with the applicable
significant fault under conditions of short time mains voltage
interruptions and reductions.
Reference to standard: See section A.4 Bibliography (d) IEC
Publication 1000-4-11 (1994).
Test procedure in brief: The test consists of subjecting the EUT
to voltage interruptions from nominal voltage to zero voltage for a
period equal to 8-10 ms, and from nominal voltage to 50 percent of
nominal for a period equal to 16-20 ms. The mains voltage
interruptions and reductions must be repeated ten times with a time
interval of at least 10 seconds. This test is conducted during a
weighing operation consisting of the following:
For belt scales--while totalizing at the maximum flow rate at
least the (or a time
sufficient to complete the test).
For platform, hanging, and automatic hopper scales--tested with
one small test load or simulated load.
Test severities: One hundred percent voltage interruption for a
period equal to 8-10 ms. Fifty percent voltage reduction for a
period equal to 16-20 ms.
Number of test cycles: Ten tests with a minimum of 10 seconds
between tests.
Maximum allowable variations: The difference between the weight
indication due to the disturbance and the indication without the
disturbance either must not exceed 1d or the EUT must detect and act
upon a significant fault.
Conduct of the Test:
Preconditioning: None required.
Test equipment:
a. A test generator suitable to reduce the amplitude of the AC
voltage from the mains. The test generator must be adjusted before
connecting the EUT.
b. Load cell simulator, if applicable.
Condition of EUT:
a. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
b. Adjust the EUT as close to zero indication as practicable
prior to the test.
Test sequence:
a. Stabilize all factors at nominal reference conditions.
b. Totalize as indicated in this A.3.4 Test Sequence section and
record the--
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Power supply voltage,
v. Test load,
vi. Indications,
vii. Errors, and
viii. Functions performance.
c. Interrupt the power supply to zero voltage for a period equal
to 8-10 ms. During interruption observe the effect on the EUT and
record, as appropriate.
d. Repeat the steps four times in this A.3.4 Test Sequence
section, making sure that there is a 10 second interval between
repetitions. Observe the effect on the EUT.
e. Reduce the power supply to 50 percent of nominal voltage for
a period equal to 16-20 ms. During reduction observe the effect on
the EUT and record, as appropriate.
f. Repeat the steps four times in this A.3.4 Test Sequence
section, making sure that there is a 10 second interval between
repetitions. Observe the effect on the EUT.
A.3.5 Bursts
[[Page 5853]]
Test method: Electrical bursts.
Object of the test: To verify compliance with the provisions in
this manual under conditions where electrical bursts are
superimposed on the mains voltage.
Reference to standard: See section A.4 Bibliography (e)
Test Procedure in brief:
The test consists of subjecting the EUT to bursts of double
exponential wave-form transient voltages. Each spike must have a
rise in time of 5 ns and a half amplitude duration of 50 ns. The
burst length must be 15 ms, the burst period (repetition time
interval) must be 300 ms. This test is conducted during a weighing
operation consisting of the following:
For belt scales--while totalizing at the maximum flow rate at
least the min (or a time sufficient to complete
the test).
For platform, hanging, and automatic hopper scales--tested with
one small test load or simulated load.
Test severities: Amplitude (peak value) 1000 V.
Number of test cycles: At least 10 positive and 10 negative
randomly phased bursts must be applied at 1000 V.
Maximum allowable variations: The difference between the
indication due to the disturbance and the indication without the
disturbance either must not exceed the values given in sections
2.2.1.1b., 3.2.1.1b., and 4.2.1.1b, of this appendix, or the EUT
must detect and act upon a significant fault.
Conduct of the test: Refer to the IEC Publication referenced in
section A.4 Bibliography (e) for detailed test procedures.
Supplementary information to the IEC test procedures:
Test equipment:
A burst generator having an output impedance of 50 ohms.
Test conditions:
The burst generator must be adjusted before connecting the EUT.
The bursts must be coupled to the EUT both on common mode and
differential mode interference.
Condition of EUT:
a. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
b. Adjust the EUT as close to a zero indication as practicable
prior to the test.
Test Sequence:
a. Stabilize all factors at nominal reference conditions.
b. Conduct the test as indicated in this A.3.5 Test Sequence
section and record the--
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Test load,
v. Indication,
vi. Errors, and
vii. Functions performance.
c. Subject the EUT to at least 10 positive and 10 negative
randomly phased bursts at the 1000 V mode. Observe the effect on the
EUT and record, as appropriate.
d. Stabilize all factors at nominal reference conditions.
e. Repeat the test and record the test data as indicated in this
A.3.5 Test Sequence section.
A.3.6 Electrostatic Discharge
Test method: Electrostatic discharge (ESD).
Object of the test: To verify compliance with the provisions of
this manual under conditions of electrostatic discharges.
Reference to standard: See section A.4 Bibliography (f)
Test procedure in brief:
A capacitor of 150 pF is charged by a suitable DC voltage
source. The capacitor is then discharged through the EUT by
connecting one terminal to ground (chassis) and the other via 150
ohms to surfaces which are normally accessible to the operator. This
test is conducted during a weighing operation consisting of the
following:
For belt scales--while totalizing at the maximum flow rate at
least the min (or a time sufficient to complete
the test).
For platform, hanging, and automatic hopper scales--test with
one small test load or simulated load.
Test severities
Air Discharge: up to and including 8 kV.
Contact Discharge: up to and including 6 kV.
Number of test cycles: At least 10 discharges must be applied at
intervals of at least 10 seconds between discharges.
Maximum allowable variations:
The difference between the indication due to the disturbance and
the indication without the disturbance either must not exceed the
values indicated in sections 2.2.1.1 b., 3.2.1.1 b., and 4.2.1.1 b.
of this appendix, or the EUT must detect and act upon a significant
fault.
Conduct of the test: Refer to the IEC Publication mentioned in
section A.4 Bibliography (d) for detailed test procedures.
Supplementary information to the IEC test procedures.
Preconditioning: None required.
Condition of EUT:
a. The EUT without a ground terminal must be placed on a
grounded plate which projects beyond the EUT by at least 0.1 m on
all sides. The ground connection to the capacitor must be as short
as possible.
b. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
Power is to be ``on'' for the duration of the test.
c. The EUT must be operating under standard atmospheric
conditions for testing.
d. Adjust the EUT as close to a zero indication as practicable
prior to the test.
Test sequence:
a. Stabilize all factors at nominal reference conditions.
b. Conduct test as indicated in this A.3.6 Test Sequence section
and record the--
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Power supply voltage,
v. Test load,
vi. Indication,
vii. Errors, and
viii. Functions performance.
c. Approach the EUT with the discharge electrode until discharge
occurs and then remove it before the next discharge. Observe the
effect of the discharge on the EUT and record, as appropriate.
d. Repeat the above step at least nine times, making sure to
wait at least 10 seconds between successive discharges. Observe the
effect on the EUT and record as appropriate.
e. Stabilize all factors at nominal reference conditions.
f. Repeat the test and record the test data as indicated in this
A.3.6 Test Sequence section.
A.3.7 Electromagnetic Susceptibility
Test method: Electromagnetic fields (radiated).
Object of the Test:
To verify compliance with the provisions in this manual under
conditions of electromagnetic fields.
Reference to standard: See section A.4 Bibliography (g).
Test procedure in brief:
a. The EUT is placed in an EMI chamber and tested under normal
atmospheric conditions. This test is first conducted at one load in
a static mode, and the frequencies at which susceptibility is
evident are noted. Then tests are conducted at the problem
frequencies, if any, during a weighing operation consisting of the
following:
For belt scales--while totalizing at the maximum flow rate at
least the min (or a time sufficient to complete
the test). It is then exposed to electromagnetic field strengths as
specified in the Test severities in this section A.3.7 of this annex
to appendix A of this part.
For platform, hanging, and automatic hopper scales--tested with
one small test load.
b. The field strength can be generated in various ways:
i. The strip line is used at low frequencies (below 30 MHz or in
some cases 150 MHz) for small EUT's;
ii. The long wire is used at low frequencies (below 30 MHz) for
larger EUT's;
iii. Dipole antennas or antennas with circular polarization
placed 1 m from the EUT are used at high frequencies.
c. Under exposure to electromagnetic fields the EUT is again
tested as indicated above.
Test severities: Frequency range: 26-1000 MHz.
Field strength: 3 V/m.
Modulation: 80 percent AM, 1 kHz sine wave.
Number of test cycles: Conduct test by continuously scanning the
specified frequency range while maintaining the field strength.
Maximum allowable variations: The difference between the
indication due to the disturbance and the indication without the
disturbance either must not exceed the values given in this manual,
or the EUT must detect and act upon a significant fault.
Conduct of the test: Refer to the IEC Publication referenced in
section A.4 Bibliography (g) for detailed information on test
procedures.
[[Page 5854]]
Supplementary information to the IEC test procedures.
Test conditions:
a. The specified field strength must be established prior to the
actual testing (without the EUT in the field). At least 1 m of all
external cables must be included in the exposure by stretching them
horizontally from the EUT.
b. The field strength must be generated in two orthogonal
polarizations and the frequency range scanned slowly. If antennas
with circular polarization, i.e., log-spiral or helical antennas,
are used to generate the electromagnetic field, a change in the
position of the antennas is not required. When the test is carried
out in a shielded enclosure to comply with international laws
prohibiting interference to radio communications, care needs to be
taken to handle reflections from the walls. Anechoic shielding might
be necessary.
Condition of EUT:
a. Normal power supplied and ``on'' for a time period equal to
or greater than the warm-up time specified by the manufacturer.
Power is to be ``on'' for the duration of the test. The EUT must be
operating under standard atmospheric conditions for testing.
b. Adjust the EUT as close to a zero indication as practicable
prior to the test.
Test sequence:
a. Stabilize all factors at nominal reference conditions.
b. Conduct the test as indicated in this A.3.7 Test Sequence
section and record the--
i. Date and time,
ii. Temperature,
iii. Relative humidity,
iv. Test load,
v. Indication,
vi. Errors, and
vii. Functions performance.
c. Following the IEC test procedures, expose the EUT at zero
load to the specified field strengths while slowly scanning the
three indicated frequency ranges.
d. Observe and record the effect on the EUT.
e. Repeat the test and observe and record the effect.
f. Stabilize all factors at nominal reference conditions.
g. Repeat the test and record the test data.
A.4 Bibliography
Below are references to Publications of the International
Electrotechnical Commission (IEC), where mention is made in the
tests in annex A to appendix A of this part.
a. IEC Publication 68-2-1 (1974): Basic environmental testing
procedures. Part 2: Tests, Test Ad: Cold, for heat dissipating
equipment under test (EUT), with gradual change of temperature.
IEC Publication 68-2-2 (1974): Basic environmental testing
procedures, Part 2: Tests, Test Bd: Dry heat, for heat dissipating
equipment under test (EUT) with gradual change of temperature.
IEC Publication 68-3-1 (1974): Background information, Section
1: Cold and dry heat tests.
b. IEC Publication 68-2-56 (1988): Environmental testing, Part
2: Tests, Test Cb: Damp heat, steady state. Primarily for equipment.
IEC Publication 68-2-28 (1980): Guidance for damp heat tests.
c. IEC Publication 1000-4-11 (1994): Electromagnetic
compatibility (EMC) Part 4: Testing and measurement techniques,
Section 11. Voltage dips, short interruptions and voltage variations
immunity tests. Section 5.2 (Test levels--Voltage variation).
Section 8.2.2 (Execution of the test-voltage variation).
d. IEC Publication 1000-4-11 (1994): Electromagnetic
compatibility (EMC) Part 4: Testing and measurement techniques,
Section 11: Voltage dips, short interruptions and voltage variations
immunity tests. Section 5.1 (Test levels--Voltage dips and short
interruptions. Section 8.2.1 (Execution of the test-voltage dips and
short interruptions) of the maximum transit speed and the range of
operating speeds.
e. IEC Publication 1000-4-4 (1995): Electromagnetic
compatibility (EMC) Part 4: Testing and measurement techniques--
Section 4: Electrical fast transient/burst immunity test. Basic EMC
publication.
f. IEC Publication 1000-4-2 (1995): Electromagnetic
compatibility (EMC) Part 4: Testing and measurement techniques--
Section 2: Electrostatic discharge immunity test. Basic EMC
Publication.
g. IEC Publication 1000-4-3 (1995): Electromagnetic
compatibility (EMC) Part 4: Testing and measurement techniques--
Section 3: Radiated, radio-frequency electromagnetic field immunity
test.
[FR Doc. 98-2244 Filed 2-3-98; 8:45 am]
BILLING CODE 3510-22-P