[Federal Register Volume 64, Number 240 (Wednesday, December 15, 1999)]
[Notices]
[Pages 70073-70076]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-32492]
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NUCLEAR REGULATORY COMMISSION
[Docket No. 50-410]
Niagara Mohawk Power Corporation; Nine Mile Point Nuclear
Station, Unit No. 2; Environmental Assessment and Finding of No
Significant Impact
The U.S. Nuclear Regulatory Commission (the Commission) is
considering the issuance of an amendment to Facility Operating License
No. NPF-69 issued to Niagara Mohawk Power Corporation (the licensee),
for operation of the Nine Mile Point Nuclear Station, Unit 2 (NMP2),
located in Oswego County, New York.
Environmental Assessment
Identification of the Proposed Action
The proposed amendment will revise the existing, or current,
Technical Specifications (CTS) for NMP2 in their entirety based on the
guidance provided in NUREG-1433 and NUREG-1434, ``Standard Technical
Specifications for General Electric Plants, BWR/4 and BWR/6,'' Revision
1, dated April 1995, and in the Commission's ``Final Policy Statement
on Technical Specifications Improvements for Nuclear Power Reactors,''
published on July 22, 1993 (58 FR 39132). The proposed amendment is in
accordance with the licensee's amendment request dated October 16,
1998, as supplemented by letters dated December 30, 1998; and May 10,
June 15, July 30, August 11, 16, 19, 27, and September 10, 1999.
The Need for the Proposed Action
It has been recognized that nuclear safety in all nuclear power
plants would benefit from an improvement and standardization of plant
Technical Specifications (TS). The ``NRC Interim Policy Statement on
Technical Specification Improvements for Nuclear Power Plants,'' (52 FR
3788) contained proposed criteria for defining the scope of TS. Later,
the Commission's ``Final Policy Statement on Technical Specifications
Improvements for Nuclear Power Reactors,'' published on July 22, 1993
(58 FR 39132), incorporated lessons learned since publication of the
interim policy statement and formed the basis for revisions to 10 CFR
50.36, ``Technical Specifications.'' The ``Final Rule'' (60 FR 36953)
codified criteria for determining the content of TS. To facilitate the
development of standard TS for nuclear power reactors, each power
reactor vendor owners' group (OG) and the NRC staff developed standard
TS. For NMP2, the Improved Standard Technical Specifications (ISTS) are
in NUREG-1433 and NUREG-1434, Revision 1. These documents formed part
of the basis for the NMP2 Improved Technical Specifications (ITS)
conversion. The NRC Committee to Review Generic Requirements (CRGR)
reviewed the ISTS, made note of its safety merits, and indicated its
support of the conversion by operating plants to the ISTS.
Description of the Proposed Change
The proposed changes to the CTS are based on NUREG-1433 and NUREG-
1434, Revision 1, and on guidance provided by the Commission in its
Final Policy Statement. The objective of the changes is to completely
rewrite, reformat, and streamline the CTS (i.e., to convert the CTS to
the ITS). Emphasis is placed on human factors principles to improve
clarity and understanding of the TS. The Bases section of the ITS has
been significantly expanded to clarify and better explain the purpose
and foundation of each specification. In addition to NUREG-1433 and
NUREG-1434, Revision 1, portions of the CTS were also used as the basis
for the development of the NMP2 ITS. Plant-specific issues (e.g.,
unique design features, requirements, and operating practices) were
discussed with the licensee, and generic matters were discussed with
General Electric and other OGs.
[[Page 70074]]
The proposed changes from the CTS can be grouped into the following
four categories: relocated requirements, administrative changes, less
restrictive changes involving deletion of requirements, and more
restrictive changes. These categories are as follows:
1. Relocated requirements (i.e., the licensee's LG or R changes)
are items which are in the CTS but do not meet the criteria set forth
in 10 CFR 50.36. This regulation establishes a specific set of
objective criteria for determining which regulatory requirements and
operating restrictions should be included in the TS. Relocation of
requirements to documents with an established control program,
controlled by the regulations or the TS, allows the TS to be reserved
only for those conditions or limitations upon reactor operation which
are necessary to obviate the possibility of an abnormal situation or
event giving rise to an immediate threat to public health and safety,
thereby focusing the scope of the TS. In general, the proposed
relocation of items from the CTS to the Updated Safety Analysis Report
(USAR), appropriate plant-specific programs, plant procedures, or ITS
Bases follows the guidance of NUREG-1433 and NUREG-1434, Revision 1.
Once these items have been relocated to other licensee-controlled
documents, the licensee may revise them under the provisions of 10 CFR
50.59 or other NRC-approved control mechanisms, which provide
appropriate procedural means to control changes by the licensee.
2. Administrative changes (i.e., the licensee's A changes) involve
the reformatting and rewording of requirements, consistent with the
style of the ISTS in NUREG-1433 and NUREG-1434, Revision 1, to make the
TS more readily understandable to plant operators and other users.
These changes are purely editorial in nature, or involve the movement
or reformatting of requirements without affecting the technical
content. Application of a standardized format and style will also help
ensure consistency is achieved among specifications in the TS. These
changes involve reformatting and rewording; no technical changes
(either actual or interpretational) to the TS will be made with respect
to these changes.
3. Less restrictive changes and the deletion of requirements
involve portions of the CTS (i.e., the licensee's LS and TR changes)
which (1) provide information that is descriptive in nature regarding
the equipment, systems, actions, or surveillances, (2) provide little
or no safety benefit, and (3) place an unnecessary burden on the
licensee. This information is proposed to be deleted from the CTS and,
in some instances, moved to the proposed Bases, USAR, or procedures.
The removal of descriptive information to the Bases of the TS, USAR, or
procedures is permissible because these documents will be controlled
through a process that utilizes 10 CFR 50.59 and other NRC-approved
control mechanisms. The relaxations of requirements were the result of
generic NRC actions or other analyses. They will be justified on a
case-by-case basis for NMP2 and described in the safety evaluation to
be issued with the license amendment.
4. More restrictive requirements (i.e., the licensee's M changes)
are proposed to be implemented in some areas to impose more stringent
requirements than are in the CTS. In some cases, these more restrictive
requirements are being imposed to be consistent with the ISTS. Such
changes have been made after ensuring the previously evaluated safety
analysis for NMP2 was not affected. Also, other more restrictive
technical changes have been made to achieve consistency, correct
discrepancies, and remove ambiguities from the TS. Examples of more
restrictive requirements include: placing a limiting condition for
operation (LCO) on plant equipment which is not required by the CTS to
be operable; more restrictive requirements to restore inoperable
equipment; and more restrictive surveillance requirements.
There are other proposed changes to the CTS that may be included in
the proposed amendment to convert the CTS to the ITS. These are beyond-
scope changes (changes that are not consistent with the CTS and/or
NUREG-1433 and NUREG-1434, Revision 1) in that they are changes to both
the CTS and the ISTS. For the NMP2, these are the following:
1. ITS 3.1.8, changing the Scram Discharge Volume Vent and Drain
Valve ACTIONS to allow continued operation with one valve in a line
inoperable by isolating the penetration within 7 days (ACTION A) and to
allow continued operation with two valves in a line inoperable by
isolating the penetration within 8 hours (ACTION B). The ISTS requires
the valves(s) to be restored to Operable status within 7 days.
2. ITS 3.3.1.1, ITS 3.3.6.1, ITS 3.5.1, and ITS 3.5.2, adding a
Note to the Reactor Protection System (RPS) (Functions 3 and 4) and
Isolation (Main Steam Line Isolation Valve (MSIV) Functions)
Instrumentation Specifications exempting the sensors from response time
testing and a Note to the Emergency Core Cooling System (ECCS)--
Operating and--Shutdown Specifications exempting the instrumentation
from response time testing.
3. ITS 3.3.2.2, allowing the feedwater pump to be removed from
service in lieu of shutting down the unit to <25 percent Rated Thermal
Power (RTP) when the feedwater and main turbine high water level
channels are inoperable and untripped.
4. ITS 3.3.3.1, ITS 3.3.3.2, ITS 3.3.8.2, ITS 3.3.8.3 and ITS
3.4.7, adding a Note to allow 6 hours to do Surveillance testing of the
Post Accident Monitoring, Remote Shutdown System, RPS logic bus
Electrical Power Monitoring Assemblies (EPAs), RPS scram solenoid bus
EPAs and Leak Detection System, instrumentation channels prior to
entering ACTIONS.
5. ITS 3.3.4.2, adding an allowance to only remove the associated
Anticipated Transient Without Scram (ATWS)-recirculation pump trip
(RPT) breaker (fast speed or slow speed, as applicable) from service,
in lieu of removing the entire pump from service.
6. ITS 3.3.5.1, ITS 3.3.8.1, ITS 3.3.8.2 and ITS 3.3.8.3, changing
the Allowable Values for (a) the Low-Pressure Cooling Injection (LPCI)
and High-Pressure Core Spray (HPCS) minimum flow valves
instrumentation; (b) the HPCS suppression pool water level swap over
instrumentation; (c) the Loss of Voltage and Degraded Voltage
Functions, including time delays; (d) the Undervoltage, Overvoltage,
and Underfrequency Functions for the RPS Logic Bus EPAs; and (e) the
Undervoltage, Overvoltage, and Underfrequency Functions for the RPS
Scram Solonoid Bus EPAs.
7. ITS 3.3.6.1, deleting the MODE 1 and 2 requirements for certain
Shutdown Cooling Isolation Functions (residual heat removal (RHR)
Equipment Area temperature, Reactor Building Pipe Chase Temperature,
Reactor Building Temperature, and Reactor Vessel Water Level--Low,
Level 3.)
8. ITS 3.3.8.1 and ITS 3.3.5.1, deleting the Group 4 valves from
isolation instrumentation requirements.
9. ITS 3.3.8.1, changing the requirement to only requiring 2
channels of degraded voltage and loss of voltage in lieu of three
channels.
10. ITS SR 3.4.1.1 requiring verification every 12 hours that
operation is in the ``Unrestricted Zone'' of ITS Figure 3.4.1-1.
11. ITS 3.4.1, changing from 2 hours to 8 hours, the frequency for
determining the Average Power Range Monitors (APRM) and Low Power Range
Monitors (LPRM) baseline noise level the first time the unit is in the
Restricted Zone.
[[Page 70075]]
12. ITS 3.4.5, changing the frequency for monitoring the floor
drain leakage rate from 8 hours to 12 hours, and changing the airborne
radioactivity monitoring Surveillance to be every 8 hours.
13. ITS 3.5.1, changing the current number of Automatic Depression
System (ADS) valves required to operate from seven to six.
14. ITS 3.5.1, modifying the current requirement of manually
opening the ADS valves to only require the ADS actuators to be cycled.
15. ITS 3.6.1.3, changing the current requirement that each excess
flow check valve (EFCV) must ``check flow'' to requiring each EFCV to
actuate to its isolation position on an actual or simulated instrument
line break signal.
16. ITS 3.6.1.3, changing the evolution to suspend the purging and
venting LCO ACTIONS to within 1 hour, when Standby Gas Treatment (SGT)
subsystem(s) are inoperable.
17. ITS 3.6.1.6, ITS 3.6.2.3 and ITS 3.5.2.4, deleting the current
requirements to verify position of ``automatic'' valves in the RHR
Drywell Spray, RHR Suppression Cooling, and RHR Suppression Pool Spray
Systems.
18. ITS 3.6.1.6 and ITS 3.6.2.4, deleting the current requirement
that drywell spray and suppression pool spray flows be through the heat
exchanger.
19. ITS 3.7.2 and ITS 3.7.3, allowing a 7-day restoration time when
both Control Room Envelope Filtration (CREF) subsystems are inoperable
and a 30-day restoration time when both control room envelope
alternating current (AC) subsystems are inoperable, provided the
remaining components of the CREF System or Control Room Envelope AC
System maintains the CREF System or Control Room Envelope AC System
safety function, as applicable.
20. ITS 3.8.1, ITS 3.8.2, and ITS 3.8.3, changing AC Sources--
Operating, AC Sources--Shutdown and Diesel Fuel Oil, Lube Oil, and
Starting Air Specifications to include: (a) more restrictive upper and
lower voltage limits for various diesel generator (DG) Surveillances;
(b) increasing the killowatt (kW) value for the single largest load
surveillance requirement (SR) for the Division 3 DG; (c) relaxing the
load range values for the 24-hour DG run to be consistent with
Regulatory Guide (RG) 1.9 Revision 3 (ISTS Bases says 100 percent for
22 hours and 110 percent for 2 hours is consistent with RG 1.9
Reference 3, which is not accurate); (d) increasing the DG start time
in the event of a Loss of Voltage signal from 13 seconds to 13.12
seconds; (e) adding a Note which exempts Surveillances pertaining to a
DG starting on a loss-of-coolant accident (LOCA) signal and a LOCA/loss
of offsite power (LOOP) signal while in Modes 4 and 5 and during
handling of irradiated fuel in the Secondary Containment when the ECCS
subsystems are not required to be Operable; and (f) increasing the fuel
oil storage tank limits for the Division 1 and 2 DGs as well as the 6-
day limits for all three DGs.
21. ITS 3.8.4, changing the DC Sources--Operating Specification by:
(a) revising the battery load profile to be consistent with the load
profile specified in the USAR; and (b) adding an allowance to perform a
modified performance discharge test every cycle in lieu of a service
test.
22. ITS 3.8.7, requiring that the inverters be capable of being
powered from an uninterruptible power supply (direct current (DC)
source). Currently, this is not required; this is a more restrictive
change.
23. ITS 3.3.8.3, specifying an allowable value in the ITS for the
time delay setting of the RPS EPA--solenoid instrumentation.
24. ITS 3.3.8.1, deleting a requirement in the ISTS for performing
a channel check on undervoltage relays; the status of relays are
continuously monitored.
25. ITS 3.3.8.2, specifying allowances in allowable values for the
time delay settings of the RPS EPA logic instrumentation.
26. ITS 3.3.4.2, adding additional verification of ATWS trip
function bypass and time delays.
27. ITS 3.3.8.1, The STS allows a 2-hour delay from entering into
the associated Conditions and Required Actions for a channel placed in
an inoperable status solely for the performance of required
surveillances, provided the associated function maintains DG initiation
capability. This is changed in the ITS ``provided the Associated
Function maintains ``LOP'' [loss of power] initiation capability.''
28. ITS 5.5.9.1.a, adding ``specific gravity'' to the acceptability
of new fuel oil before adding to the DG fuel tanks.
29. ITS SR 3.6.3.1.2, adding a description of an additional
requirement in the Bases SR 3.6.3.1.2 regarding when to perform the
surveillance (``within 30 minutes following heatup of the system to
normal operating temperature.'')
30. ITS SR 3.3.1.1.16, modifying the Response Time Testing
requirement for Function 9, Turbine Control Valve Fast Closure, Trip
Oil Pressure--Low by stating that the response time is measured from
the start of the control valve fast closure, not when the sensor (oil
pressure sensor) exceeds its setpoint.
31. ITS 3.3.5.1, specifying an ADS pressure setpoint of 150 psig,
implementing Topical Report NEDC-32291, and making other changes
associated with moving Group 4 isolation valves into the ECCS TS in the
ITS.
32. ITS 3.3.5.1, Table 3.3.5.1-1, specifying an ADS pressure
setpoint for low-pressure core spray (LPCS) pump discharge pressure--
high to be 150 psig based on implementation of Topical Report NEDC-
32291.
33. ITS 3.3.2.1, deleting operational details in CTS Table 3.3.6-2
(Control Rod Block Instrumentation Set Points) not required to be TS,
and providing allowable values based on NEDO-2411 which is not
referenced in the ISTS.
34. ITS 3.3.6.1, deleting the reactor core isolation cooling (RCIC)
drywell pressure high isolation functions, providing new RCIC/RHR Steam
Flow Timer and SGT Exhaust Radiation High isolation functional
allowable values, and deleting the main steam line (MSL) radiation high
isolation function.
35. ITS 3.6.1.2, changing the requirement to verify that the air
lock door seal leakage rate is within limit from ``once per 7 days'' to
``once in 30 days.''
36. ITS 3.6.1.7, adding a note to allow a separate condition entry
for each suppression chamber-to-drywell vacuum breaker.
37. ITS 3.6.1.7, changing the ACTION statement into two ACTION
statements: ITS 3.6.1.7 ACTION B addresses the closing of the open
vacuum breaker within 72 hours, while ITS 3.6.1.7 ACTION C addresses
the verification/closing of the other vacuum breaker in the line within
2 hours. However, both ITS 3.6.1.7 Conditions B and C have been
modified such that the words ``One or more lines with'' have been
added.
38. ITS 3.4.4, increasing the lift setpoint tolerance for the
safety/relief valves to 3 percent.
39. ITS 3.3.1.1, deleting the MSL radiation monitor reactor trip
requirement and surveillance requirement based on the application of
NEDO-31400A.
40. ITS 3.7.2, SR 3.7.2.1, deleting the staggered testing
requirement for the CREF subsystem.
41. ITS 3.3.1.2, adding a note to ITS SR 3.3.1.2.5 that defers
determination of the signal-to-noise ratio in Mode 5 if less than or
equal to four fuel assemblies are adjacent to the source range monitors
(SRM) and no fuel is in the quadrant.
42. ITS 3.3.1.2, changing the STS Action to ``initiate action to
insert all
[[Page 70076]]
insertable control rods * * *'' to ``Initiate action to ``fully''
insert all insertable control rods * * *''
43. ITS 3.3.5.1, ITS Table 3.3.5.1-1, changing footnote (a) from
the STS to include a citation of LCO 3.5.2 which amplifies the ECCS
equipment instrumentation requirements.
44. ITS 5.5.2.b, adding a note that the provisions of SR 3.0.2
apply to integrated leak tests at 24 months.
45. ITS 3.8.8, incorporating changes to Condition A, B and C of the
STS applicable to ``one or more'' Divisions and to ``one or both.''
46. ITS 3.6.4.1, incorporating wording changes that alter the
meaning of containment operability with respect to meeting surveillance
requirements which relates to whether the inoperability of the standby
gas treatment system constitutes a failure of the surveillance of the
secondary containment integrity test.
Environmental Impacts of the Proposed Action
The Commission has completed its evaluation of the proposed
conversion of the CTS to the ITS for NMP2, including the beyond-scope
issues discussed above. Changes which are administrative in nature have
been found to have no effect on the technical content of the TS. The
increased clarity and understanding these changes bring to the TS are
expected to improve the operators' control of NMP2 in normal and
accident conditions.
Relocation of requirements from the CTS to other licensee-
controlled documents does not change the requirements themselves.
Future changes to these requirements may then be made by the licensee
under 10 CFR 50.59 and other NRC-approved control mechanisms which will
ensure continued maintenance of adequate requirements. All such
relocations have been found to be consistent with the guidelines of
NUREG-1433 and NUREG-1434 and 10 CFR 50.36 does not require that the
requirements be included in the TS.
Changes involving more restrictive requirements have been found to
enhance plant safety.
Changes involving less restrictive requirements have also been
reviewed. When requirements have been shown to provide little or no
safety benefit, or to place an unnecessary burden on the licensee,
their removal from the TS was justified. In most cases, relaxations
previously granted to individual plants on a plant-specific basis were
the result of a generic action, or of agreements reached during
discussions with the OG, and found to be acceptable for the plant.
Generic relaxations contained in NUREG-1433 and NUREG-1434, Revision 1,
have been reviewed by the NRC staff and found to be acceptable.
In summary, the proposed revisions to the TS were found to provide
control of plant operations such that reasonable assurance will be
provided that the health and safety of the public will be adequately
protected.
The proposed amendment will not increase the probability or
consequences of accidents, will not change the quantity or types of any
effluent that may be released offsite, and will not significantly
increase the occupational or public radiological exposure. Also, these
changes do not increase the licensed power and allowable effluents for
the plant. The changes will not create any new or unreviewed
environmental impacts that were not considered in the Final
Environmental Statement (FES) related to the operation of NMP2, (NUREG-
1085, dated May 1985). Therefore, there are no significant radiological
impacts associated with the proposed amendment.
With regard to potential non-radiological impacts, the proposed
amendment involves features located entirely within the restricted area
for the plant defined in 10 CFR Part 20 and does not involve any
historical sites. They do not affect non-radiological plant effluents
and have no other environmental impact. They do not increase any
discharge limit for the plant. Therefore, there are no significant non-
radiological environmental impacts associated with the proposed
amendment.
Accordingly, the Commission concludes that there are no significant
environmental impacts associated with the proposed amendment.
Alternatives to the Proposed Action
As an alternative to the proposed action, the staff considered
denial of the proposed action (i.e., the ``no-action'' alternative).
Denial of the application would result in no change in current
environmental impacts. The environmental impacts of the proposed action
and the alternative action are similar.
Alternative Use of Resources
This action does not involve the use of any resources not
previously considered in the Final Environmental Statement for NMP2,
dated May 1985.
Agencies and Persons Consulted
In accordance with its stated policy, the staff consulted with the
New York State official, Jack Spath, of the New York Energy and
Research Authority on November 4, 1999, regarding the environmental
impact of the proposed amendment. The State official had no comments.
Finding of No Significant Impact
On the basis of the environmental assessment, the Commission
concludes that the proposed amendment will not have a significant
adverse effect on the quality of the human environment. Accordingly,
the Commission has determined not to prepare an environmental impact
statement for the proposed action.
For further details with respect to the proposed action, see the
licensee's application dated October 16, 1998, as supplemented by
letters dated December 30, 1998; and May 10, June 15, July 30, August
11, 16, 19, 27, and September 10, 1999, which are available for public
inspection at the Commission's Public Document Room, The Gelman
Building, 2120 L Street, NW., Washington, DC. Publically available
records will be accessible electronically from the ADAMS Public Library
component on the NRC Web site, http://www.nrc.gov (the Electronic
Reading Room).
Dated at Rockville, Maryland, this 9th day of December 1999.
For the Nuclear Regulatory Commission.
Alexander W. Dromerick,
Acting Chief, Section 1, Project Directorate I, Division of Licensing
Project Management, Office of Nuclear Reactor Regulation.
[FR Doc. 99-32492 Filed 12-14-99; 8:45 am]
BILLING CODE 7590-01-P