[Federal Register Volume 87, Number 26 (Tuesday, February 8, 2022)]
[Notices]
[Pages 7209-7211]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-02562]
=======================================================================
-----------------------------------------------------------------------
NUCLEAR REGULATORY COMMISSION
[NRC-2022-0036]
Water Sources for Long-Term Recirculation Cooling Following a
Loss-of-Coolant Accident
AGENCY: Nuclear Regulatory Commission.
ACTION: Draft regulatory guide; request for comment.
-----------------------------------------------------------------------
SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing for
public comment draft regulatory guide (DG), DG-1385, ``Water Sources
for Long-Term Recirculation Cooling Following a Loss-of-Coolant
Accident.'' This DG is proposed Revision 5 to Regulatory Guide (RG)
1.82, which describes an approach that may be used to determine quality
standards acceptable to the NRC staff, to meet the regulatory
requirements for sumps and suppression pools that provide water sources
for emergency core cooling,
[[Page 7210]]
containment heat removal, or containment atmosphere cleanup systems. It
also provides guidelines for evaluating the adequacy and the
availability of the sump or suppression pool for long-term
recirculation cooling following a loss-of-coolant-accident, and the use
of containment accident pressure in determining the net positive
suction head for the emergency core cooling and containment heat
removal pumps. This proposed revision guidance applies to both the
pressurized-water reactor (PWR) and boiling-water reactor (BWR) types
of light-water reactors.
DATES: Submit comments by March 10, 2022. Comments received after this
date will be considered if it is practical to do so, but the NRC is
able to ensure consideration only for comments received on or before
this date.
ADDRESSES: You may submit comments by any of the following methods;
however, the NRC encourages electronic comment submission through the
Federal rulemaking website:
Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2022-0036. Address
questions about Docket IDs in Regulations.gov to Stacy Schumann,
telephone: 301-415-0624; email: [email protected]. For technical
questions, contact the individuals listed in the FOR FURTHER
INFORMATION CONTACT section of this document.
Mail comments to: Office of Administration, Mail Stop:
TWFN-7-A60M, U.S. Nuclear Regulatory Commission, Washington, DC 20555-
0001. ATTN: Program Management, Announcements and Editing Staff.
For additional direction on obtaining information and submitting
comments, see ``Obtaining Information and Submitting Comments'' in the
SUPPLEMENTARY INFORMATION section of this document.
FOR FURTHER INFORMATION CONTACT: Ahsan Sallman, Office of Nuclear
Reactor Regulation, telephone: 301-415-2380 email:
[email protected] or James Steckel, Office of Nuclear Regulatory
Research, telephone: 301-415-1026 email: [email protected]. Both
are staff members of the U.S. Nuclear Regulatory Commission,
Washington, DC 20555-0001.
SUPPLEMENTARY INFORMATION:
I. Obtaining Information and Submitting Comments
A. Obtaining Information
Please refer to Docket ID NRC-2022-0036 when contacting the NRC
about the availability of information regarding this action. You may
obtain publicly available information related to this action, by any of
the following methods:
Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2022-0036.
NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly available documents online in the
ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, 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, at 301-415-4737,
or by email to [email protected]. The ADAMS accession number for
each document referenced (if it is available in ADAMS) is provided the
first time that it is mentioned in this document.
NRC's PDR: You may examine and purchase copies of public
documents, by appointment, at the NRC's PDR, Room P1 B35, One White
Flint North, 11555 Rockville Pike, Rockville, Maryland 20852. To make
an appointment to visit the PDR, please send an email to
[email protected] or call 1-800-397-4209 or 301-415-4737, between
8:00 a.m. and 4:00 p.m. (ET), Monday through Friday, except Federal
holidays.
B. Submitting Comments
The NRC encourages electronic comment submission through the
Federal rulemaking website (https://www.regulations.gov). Please
include Docket ID NRC-2022-0036 in your comment submission.
The NRC cautions you not to include identifying or contact
information that you do not want to be publicly disclosed in your
comment submission. The NRC posts all comment submissions at https://www.regulations.gov as well as enters the comment submissions into
ADAMS. The NRC does not routinely edit comment submissions to remove
identifying or contact information.
If you are requesting or aggregating comments from other persons
for submission to the NRC, then you should inform those persons not to
include identifying or contact information that they do not want to be
publicly disclosed in their comment submission. Your request should
state that the NRC does not routinely edit comment submissions to
remove such information before making the comment submissions available
to the public or entering the comment submissions into ADAMS.
II. Additional Information
The NRC is issuing for public comment a DG in the NRC's
``Regulatory Guide'' series. This series was developed to describe
methods that are acceptable to the NRC staff for implementing specific
parts of the agency's regulations, to explain techniques that the staff
uses in evaluating specific issues or postulated events, and to
describe information that the staff needs in its review of applications
for permits and licenses.
The DG, titled ``Water Sources for Long-Term Recirculation Cooling
Following a Loss-of-Coolant Accident,'' is temporarily identified by
its task number, DG-1385 (ADAMS Accession No. ML21266A185). DG-1385 is
proposed Revision 5 to RG 1.82, ``Water Sources for Long-Term
Recirculation Cooling Following a Loss-of-Coolant Accident'' (ADAMS
Package Accession No. ML21081A042). The proposed revision guidance,
applicable to both the PWR and BWR types of light-water reactors, may
be used to determine acceptable methods to meet the regulatory
requirements for sumps and suppression pools that provide water sources
for emergency core cooling, containment heat removal, or containment
atmosphere cleanup systems for satisfying General Design Criterion 1,
``Quality Standards and Records,'' as set forth in Appendix I,
``Numerical Guides for Design Objectives and Limiting Conditions for
Operation to Meet the Criterion `As Low as Is Reasonably Achievable'
for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor
Effluents,'' of part 50 of title 10 of the Code of Federal Regulations
(10 CFR), ``Domestic Licensing of Production and Utilization
Facilities.''
Changes are being made to provide guidance on the use of
containment accident pressure in determining the net positive suction
head margin for the emergency core cooling system and containment heat
removal pumps. The proposed revision also incorporates new information
regarding the effects of debris on long-term core cooling (LTCC) since
Revision 4, (03/2012) of RG 1.82 was issued.
The staff is also issuing for public comment a draft regulatory
analysis (ADAMS Accession No. ML21266A186). The staff develops a
regulatory analysis to assess the value of issuing or revising a
regulatory guide as well as alternative courses of action.
[[Page 7211]]
III. Backfitting, Forward Fitting, and Issue Finality
Issuance of DG-1385, if finalized, would not constitute backfitting
as defined in 10 CFR 50.109, ``Backfitting,'' and as described in NRC
Management Directive (MD) 8.4, ``Management of Backfitting, Forward
Fitting, Issue Finality, and Information Requests''; constitute forward
fitting as that term is defined and described in MD 8.4; or affect the
issue finality of any approval issued under 10 CFR part 52.
Dated: February 2, 2022.
For the Nuclear Regulatory Commission.
Meraj Rahimi,
Chief, Regulatory Guide and Programs Management Branch, Division of
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2022-02562 Filed 2-7-22; 8:45 am]
BILLING CODE 7590-01-P