[Federal Register Volume 81, Number 34 (Monday, February 22, 2016)]
[Notices]
[Pages 8750-8752]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-03591]
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NUCLEAR REGULATORY COMMISSION
[Docket Nos. 50-029, and 72-1025; NRC 2016-0029]
Independent Spent Fuel Storage Installation, Yankee Atomic
Electric Company
AGENCY: Nuclear Regulatory Commission.
ACTION: Exemption; issuance.
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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing an
exemption in response to a September 1, 2015, request from Yankee
Atomic Electric Company, (YAEC or licensee) from the requirement to
comply with the terms, conditions, and specifications regarding the
method of compliance defined in Amendment No. 5 of the NAC
International, Inc. (NAC),--MPC Certificate of Compliance (CoC) No.
1025, Appendix A ``Technical Specifications for NAC-MPC System,''
Technical Specifications (TS) A.5.3 ``Surveillance After an Off-Normal,
Accident, or Natural Phenomena Event'' at the Yankee Nuclear Power
Station (YNPS) Independent Spent Fuel Storage Installation (ISFSI). The
exemption request seeks a modification of TS A 5.3 inspection
requirements for the inlet and outlet vents following off-normal,
accident and natural phenomena events.
ADDRESSES: Please refer to Docket ID NRC-2016-0029 when contacting the
NRC about the availability of information regarding this document. You
may obtain publicly-available information related to this document
using any of the following methods:
Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2016-0029. Address
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: [email protected]. For technical questions, contact
the individual listed in the FOR FURTHER INFORMATION CONTACT section of
this document.
NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly available documents online in the
ADAMS Public Documents collection at http://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``ADAMS Public Documents'' and
then select ``Begin Web-based ADAMS Search.'' For problems with ADAMS,
please contact the NRC's Public Document Room (PDR) reference staff at
1-800-397-4209, 301-415-4737, or by email to [email protected]. The
ADAMS accession number for each document referenced in this document
(if that document is available in ADAMS) is provided the first time
that a document is referenced.
NRC's PDR: You may examine and purchase copies of public
documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555
Rockville Pike, Rockville, Maryland 20852.
FOR FURTHER INFORMATION CONTACT: John Goshen, Office of Nuclear
Material Safety and Safeguards, telephone: 301-415-6933, email:
[email protected]; U.S. Nuclear Regulatory Commission, Washington, DC
20555.
SUPPLEMENTARY INFORMATION:
I. Background
The licensee is the holder of Facility Operating License No. DPR-3
which authorizes operation of the YNPS located near Rowe,
Massachusetts, pursuant to part 50 of title 10 of the Code of Federal
Regulations (10 CFR). The facility is in decommissioned status. The
license provides, among other things, that the facility is subject to
all rules, regulations, and orders of the NRC now or hereafter in
effect.
Under subpart K of 10 CFR part 72, a general license has been
issued for the storage of spent fuel in an ISFSI at power reactor sites
to persons authorized to possess or operate nuclear power reactors
under 10 CFR part 50. The licensee is licensed to operate a nuclear
power reactor under 10 CFR part 50, and authorized under the 10 CFR
part 72 general license to store spent fuel at the YNPS ISFSI. Under
the terms of the general license, YNPS stores spent fuel using
Amendment No. 5 of the NAC-MPC CoC No. 1025.
II. Request/Action
YAEC requests an exemption from 10 CFR 72.212(b)(3), 10 CFR
72.212(b)(5)(i), and 10 CFR 72.214 for the YNPS ISFSI.
Section 72.212(b)(3) requires that a general licensee use
casks that conform to the terms, conditions, and specifications of a
CoC or amended CoC listed in Sec. 72.214. The NAC-MPC CoC No. 1025 is
listed in 10 CFR 72.214.
Section 72.212(b)(5)(i) requires, in relevant part, that a
general licensee demonstrate a loaded cask will conform to the terms,
conditions, and specifications of a CoC for a cask listed in Sec.
72.214.
Section 72.214 lists casks which are approved for storage
of spent fuel under conditions specified in their CoCs, including CoC
1025 and Amendment No. 5.
The licensee, as a 10 CFR 72 general licensee, is required to use
the NAC-MPC System according to the technical specifications of the
NAC-MPC System CoC No. 1025. Amendment No. 5 of the NAC-MPC CoC No.
1025, Appendix A, ``Technical Specifications for the NAC-MPC System,''
TS A 5.3, ``Surveillance After an Off-Normal, Accident, or Natural
Phenomena Event,'' requires that a general licensee undertake a visual
surveillance of the NAC-MPC casks within 4 hours after the occurrence
of an off-normal, accident or natural phenomena event in the area of
the ISFSI. This NAC-MPC cask inspection is part of the general
licensee's surveillance response to verify that all the CONCRETE CASK
inlets and outlets are not blocked or obstructed. The NAC-MPC TS A 5.3
also requires that at least one-half of the inlets and outlets on each
CONCRETE CASK be cleared of blockage or debris within 24 hours to
restore air circulation.
[[Page 8751]]
The licensee seeks the NRC's authorization to use NAC-MPC TS A
3.1.6 as an alternative to the visual surveillance method specified in
NAC-MPC TS A 5.3. technical Specification A 3.1.6 permits (either)
visual surveillance of the inlets and outlets screens or temperature
monitoring of each cask to establish the operability of the Concrete
Cask Heat Removal System for each NAC-MPC cask and to show that the
limiting conditions for operation under 3.1.6 are met. Technical
Specification A 3.1.6 establishes ongoing requirements that YNPS must
comply with during all phases of the cask storage operations, not only
after an unusual event in the area of the ISFSI. In effect, TS A 3.1.6
provides continuous temperature monitoring or visual verification to
establish operability of the Concrete Cask Heat Removal System for all
NAC-MPC CoC No. 1025 casks.
The proposed alternative for implementing TS A 5.3 provides that
Surveillance Requirement (SR) 3.1.6.1 is required following off-normal,
accident or natural phenomena events. The NAC-MPC Systems in use at an
ISFSI shall be inspected in accordance with SR 3.1.6.1 within 4 hours
after the occurrence of an off-normal, accident or natural phenomena
event in the area of the ISFSI to confirm operability of the CONCRETE
CASK Heat Removal System for each NAC-MPC System. Additionally, if a
CONCRETE CASK Heat Removal System(s) for one or more NAC-MPC Systems is
determined to be inoperable, Required Action A.1 of TS A 3.1.6 requires
the licensee to restore the affected Concrete Cask Heat Removal
System(s) to an operable condition within 8 hours.
The NAC-MPC Final Safety Analysis Report (FSAR) supports the use of
either method defined in SR 3.1.6.1 to establish operability to comply
with NAC-MPC TS A 3.1.6 or NAC-MPC TS A 5.3. Section 11.1.1 of the FSAR
states, ``Blockage of Half of the Air Inlets would be detected by the
daily concrete cask operability inspection, which is performed either
by the outlet air temperature measurements or by visual inspection of
the inlet and outlet screens for blockage and integrity.''
III. Discussion
Under 10 CFR 72.7, the Commission may, upon application by any
interested person or upon its own initiative, grant an exemption from
the requirements of 10 CFR part 72 if the exemption is authorized by
law, will not endanger life or property or the common defense and
security and is otherwise in the public interest. As explained below,
the proposed exemption is lawful, will not endanger life or property,
or the common defense and security, and is otherwise in the public
interest. The ADAMS accession numbers for the applicable documents are:
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ADAMS accession
Document Date No.
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Exemption Request............ September 1, 2015.... ML15254A050
Letter of transmittal........ NA................... ML16033A150
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The Exemption Is Authorized by Law
The exemption would permit the licensee to use either of the
inspection methods permitted by NAC-MPC TS A 3.1.6 as an alternative to
the single surveillance method in NAC-MPC TS A 5.3. The licensee would
conduct a surveillance response within 4 hours after the occurrence of
an off-normal, accident, or natural phenomena event, as required by
NAC-MPC TS A 5.3, but would be permitted to use either temperature
monitoring or visual inspection to ensure the Concrete Cask Heat
Removal Systems are within the limiting conditions for operation. The
exemption is limited to off-normal, accident, or natural phenomena
events, specifically major snow or icing events (snow/ice events that
have the potential to or that exceed blockage of greater than one-half
of the inlet or outlet vents).
The licensee requested an exemption from the provisions in 10 CFR
part 72 that require the licensee to comply with the terms, conditions,
and specifications of the CoC for the approved cask model that it uses.
Section 72.7 of 10 CFR allows the NRC to grant exemptions from the
requirements of 10 CFR part 72. Issuance of this exemption is
consistent with the Atomic Energy Act of 1954, as amended, and is not
inconsistent with NRC regulations or other applicable laws. As
explained below, the proposed exemption will not endanger life or
property, or the common defense and security, and is otherwise in the
public interest. Therefore, the exemption is authorized by law.
The Exemption Is Consistent With the Common Defense and Security
The requested exemption would allow the licensee to use the SR,
conditions, required actions, and completion times defined in NAC-MPC
TS A 3.1.6 as an alternative to the single-method surveillance response
in NAC-MPC TS A 5.3. Technical Specification A 3.1.6 permits (either)
visual inspection of the inlet and outlet screens or temperature
monitoring to establish the operability of the Concrete Cask Heat
Removal System for each NAC-MPC System and to comply with the limiting
conditions for operation for TS A 3.1.6. SR 3.1.6.1 permits temperature
monitoring or visual inspection of the inlet and outlet screens to be
utilized to establish the operability of the Concrete Cask Heat Removal
System for each NAC-MPS System to meet Limiting Condition for Operation
3.1.6. In the event the applicable acceptance criterion of SR 3.1.6.1
is not met, Required Action A.1 requires the licensee to restore the
affected Concrete Cask Heat Removal System(s) to an operable condition
within 8 hours.
The NRC staff reviewed the licensee's request and finds allowing
the use of either visual surveillance of the inlet and outlet screens
or temperature monitoring of the inlets and outlets within 4 hours of
the occurrence of off-normal, accident, or natural phenomena events,
when limited to major snow and icing events, does not compromise
safety. The exemption still requires the licensee to perform SR 3.1.6.1
to establish the operability of the Concrete Cask Heat Removal Systems
event 24 hours via temperature monitoring or visual inspection of the
inlet and outlet screens. In addition, the exemption provides no
additional time to complete the required surveillance of the inlets and
outlets screens in accordance with TS A 5.3. The use of either method
will ensure that adequate air flows past the storage canister and that
heat transfer occurs. For these reasons, the NRC staff found the same
level of safety is obtained by using either of the TS A 3.1.6 methods
to comply with NAC-MPC TS A 5.3 during limited types off-normal,
accident, or natural phenomena.
The NRC staff has determined that the thermal, structural,
criticality,
[[Page 8752]]
retrievability, and radiation protection requirements of 10 CFR part 72
and the offsite dose limits of 10 CFR part 20 will be maintained. For
these reasons, the staff finds the same level of safety is obtained by
using either of the TS A 3.1.6 methods to comply with NAC-MPC TS A 5.3.
Therefore, the NRC concludes that the exemption will not endanger life
or property or the common defense and security.
The Exemption Presents No Undue Risk to Public Health and Safety
As described in the application, exempting the licensee from visual
surveillance of cask inlet and outlet vents within 4-hours of a major
snowstorm would allow the licensee to more effectively prioritize
important storm-related activities at the YNPS site. Snow and ice
blockage of the inlet and outlet vents is unusual. Moreover, snow and
ice blockages are identified reliably by temperature monitoring of
individual casks. The NRC staff recognizes there is a risk to the
safety of workers responsible for clearing snow and ice from cask pads
during extreme winter conditions when visual surveillance of casks must
be undertaken within 4 hours. The NRC staff finds this risk to workers
can be reduced by using SR 3.1.6.1 to establish the operability of the
Concrete Cask Heat Removal Systems via temperature monitoring or visual
inspection of the inlet and outlet screens. In addition, the limiting
conditions for operation of the NAC-MPC System require the Concrete
Cask Heat Removal System for each cask to be operable during storage
operations thus ensuring public health and safety are not reduced.
Therefore the NRC staff finds that allowing the licensee to use the
SR, conditions, required actions, and completion times defined in NAC-
MPC TS A 3.1.6 as an alternative to the single-method surveillance
response in NAC-MPC TS A 5.3 would reduce worker safety risks to plant
workers involved in snow removal. Therefore, granting the exemption is
otherwise in the public interest.
Environmental Considerations
The staff evaluated whether there would be significant
environmental impacts associated with the issuance of the requested
exemption. The staff determined the proposed action fits a category of
actions that do not require an environmental assessment or
environmental impact statement. The exemption meets the categorical
exclusion requirements of 10 CFR 51.22(c)(25)(i)-(vi).
Granting an exemption from the requirements of 10 CFR 72.212(b)(3),
10 CFR 72.212(b)(5)(i), and 10 CFR 72.214 for the YNPS ISFSI involves
the visual surveillance requirement associated with TS A 5.3A. A
categorical exclusion for inspection and SRs is provided under 10 CFR
51.22(c)(25)(vi)(C), if the criteria in 10 CFR 51.22(c)(25)(i)-(v) are
also satisfied.
The granting of the exemption: (i) Would not involve a significant
hazards consideration because it does not reduce a margin of safety,
create a new or different kind of accident not previously evaluated, or
significantly increase the probability or consequences of an
unevaluated accident; (ii) would not create a significant change in the
types or significant increase in the amounts of any effluents that may
be released offsite because the exemption does not change or produce
additional avenues of effluent release; (iii) would not significantly
increase individual or cumulative public or occupational radiation
exposure because the exemption does not introduce new or increased
radiological hazards; (iv) would not result in significant construction
impacts because the exemption would not involve construction or other
ground disturbing activities, nor change the footprint of the existing
ISFSI; v) would not significantly increase the potential for, or
consequences from, radiological accidents because the exemption
requires a surveillance method that ensures the heat removal system of
casks is maintained within the limiting conditions for operation; and
(vi) the request seeks exemption from inspection or surveillance
requirements, specifically, the single-method surveillance requirement
in NAC-MPC TS A 5.3, may be substituted with the SR, conditions,
required actions, and completion times defined in NAC-MPC TS 3.1.6.
In its review of the exemption request, the NRC staff determined
the proposed exemption meets the eligibility criterion for categorical
exclusion in 10 CFR 51.22(c)(25).
Therefore, there are no significant radiological environmental
impacts associated with the proposed action.
IV. Conclusion
The NRC has determined that, under 10 CFR 72.7, the exemption is
authorized by law, will not endanger life or property or the common
defense and security, and is otherwise in the public interest.
Therefore, the NRC grants YAEC an exemption from the requirements in10
CFR 72.212(b)(3), 10 CFR 72.212(b)(5)(i), 10 CFR 72.214, and to TS
A.5.3 for the NAC-MPC System CoC No. 1025 storage casks at the YNPS
ISFSI. The exemption authorizes the licensee to use the SR, conditions,
required actions, and completion times defined in NAC-MPC TS A 3.1.6 to
comply with NAC-MPC TS A 5.3 after off-normal, accident, or natural
phenomena events, but is specifically limited to major snow or icing
events (events that have the potential to or that exceed blockage of
greater than one-half of the inlet or outlet vents).
This exemption is effective upon issuance.
Dated at Rockville, Maryland, this 4th day of February, 2016.
For the Nuclear Regulatory Commission.
Steve Ruffin,
Acting Chief, Spent Fuel Licensing Branch, Division of Spent Fuel
Management, Office of Nuclear Material Safety and Safeguards.
[FR Doc. 2016-03591 Filed 2-19-16; 8:45 am]
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