Draft Regulatory Guide: Issuance, Availability, 35521 [E7-12562]
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Federal Register / Vol. 72, No. 124 / Thursday, June 28, 2007 / Notices
For the Nuclear Regulatory Commission.
Russell A. Gibbs,
Chief, Plant Licensing Branch III–2, Division
of Operating Reactor Licensing. Office of
Nuclear Reactor Regulation.
[FR Doc. E7–12563 Filed 6–27–07; 8:45 am]
BILLING CODE 7590–01–P
NUCLEAR REGULATORY
COMMISSION
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Draft Regulatory Guide: Issuance,
Availability
The U.S. Nuclear Regulatory
Commission (NRC) has issued for public
comment a draft of a revised existing
guide in the agency’s Regulatory Guide
Series. This series has been developed
to describe and make available to the
public such information as methods that
are acceptable to the NRC staff for
implementing specific parts of the
NRC’s regulations, techniques that the
staff uses in evaluating specific
problems or postulated accidents, and
data that the staff needs in its review of
applications for permits and licenses.
The draft regulatory guide, entitled
‘‘Guidance on Monitoring and
Responding to Reactor Coolant System
Leakage,’’ is temporarily identified by
its task number, DG–1173, which
should be mentioned in all related
correspondence.
General Design Criterion (GDC) 14,
‘‘Reactor Coolant Pressure Boundary,’’
as set forth in Appendix A, ‘‘General
Design Criteria for Nuclear Power
Plants,’’ to Title 10, Part 50, of the Code
of Federal Regulations (10 CFR Part 50),
‘‘Domestic Licensing of Production and
Utilization Facilities’’, requires that the
reactor coolant pressure boundary
(RCPB) shall be designed, fabricated,
erected, and tested so as to have an
extremely low probability of abnormal
leakage, of rapidly propagating failure,
and of gross rupture. As a result, these
nuclear components are normally
designed to the criteria established in
Section III of the Boiler and Pressure
Vessel Code promulgated by the
American Society of Mechanical
Engineers.
During the design phase, degradationresistant materials are normally
specified for reactor coolant system
components. However, materials can
degrade as a result of the complex
interaction of the materials, the stresses
they encounter, and the normal and
upset operating environments in which
they are used. Such material
degradation could lead to the leakage of
the reactor coolant. Consequently, GDC
30, ‘‘Quality of Reactor Coolant Pressure
Boundary,’’ of Appendix A to 10 CFR
VerDate Aug<31>2005
18:23 Jun 27, 2007
Jkt 211001
Part 50, requires that means shall be
provided for detecting and, to the extent
practical, identifying the location of the
source of reactor coolant leakage.
Additionally, 10 CFR 50.55a, ‘‘Codes
and Standards’’, requires the
performance of inservice inspection and
testing of nuclear power plant
components. Thus, the concept of
defense-in-depth is used to provide
assurance that structural integrity of the
RCPB is maintained. This guide
describes methods that the staff of the
U.S. Nuclear Regulatory Commission
(NRC) considers acceptable for
implementing these requirements, with
regard to selecting reactor coolant
leakage detection systems, monitoring
for leakage, and responding to leakage.
This guide applies to light-water cooled
reactors.
The NRC staff is soliciting comments
on Draft Regulatory Guide DG–1173.
Comments may be accompanied by
relevant information or supporting data,
and should mention DG–1173 in the
subject line. Comments submitted in
writing or in electronic form will be
made available to the public in their
entirety through the NRC’s Agencywide
Documents Access and Management
System (ADAMS). Personal information
will not be removed from your
comments. You may submit comments
by any of the following methods.
Mail comments to: Rulemaking,
Directives, and Editing Branch, Office of
Administration, U.S. Nuclear Regulatory
Commission, Washington, DC 20555–
0001.
E-mail comments to:
NRCREP@nrc.gov. You may also submit
comments via the NRC’s rulemaking
Web site at https://ruleforum.llnl.gov.
Address questions about our rulemaking
Web site to Carol A. Gallagher (301)
415–5905; e-mail CAG@nrc.gov.
Hand-deliver comments to:
Rulemaking, Directives, and Editing
Branch, Office of Administration, U.S.
Nuclear Regulatory Commission, 11555
Rockville Pike, Rockville, Maryland
20852, between 7:30 a.m. and 4:15 p.m.
on Federal workdays.
Fax comments to: Rulemaking,
Directives, and Editing Branch, Office of
Administration, U.S. Nuclear Regulatory
Commission at (301) 415–5144.
Requests for technical information
about Draft Regulatory Guide DG–1173
may be directed to NRC Senior Program
Manager, Makuteswara Srinivasan, at
(301) 415–6356 or e-mail
MXS5@nrc.gov.
Comments would be most helpful if
received by 60 days from issuance of
FRN. Comments received after that date
will be considered if it is practical to do
so, but the NRC is able to ensure
PO 00000
Frm 00100
Fmt 4703
Sfmt 4703
35521
consideration only for comments
received on or before this date.
Although a time limit is given,
comments and suggestions in
connection with items for inclusion in
guides currently being developed or
improvements in all published guides
are encouraged at any time.
Electronic copies of Draft Regulatory
Guide DG–1173 are available through
the NRC’s public Web site under Draft
Regulatory Guides in the Regulatory
Guides document collection of the
NRC’s Electronic Reading Room at
https://www.nrc.gov/reading-rm/doccollections/. Electronic copies are also
available in ADAMS (https://
www.nrc.gov/reading-rm/adams.html),
under Accession #ML071070410.
In addition, regulatory guides are
available for inspection at the NRC’s
Public Document Room (PDR), which is
located at 11555 Rockville Pike,
Rockville, Maryland. The PDR’s mailing
address is USNRC PDR, Washington, DC
20555–0001. The PDR can also be
reached by telephone at (301) 415–4737
or (800) 397–4205, by fax at (301) 415–
3548, and by e-mail to PDR@nrc.gov.
Requests for single copies of draft or
final guides (which may be reproduced)
should be made in writing to the U.S.
Nuclear Regulatory Commission,
Washington, DC 20555–0001, Attention:
Reproduction and Distribution Services
Section; by e-mail to
DISTRIBUTION@nrc.gov; or by fax to
(301) 415–2289. Telephone requests
cannot be accommodated.
Regulatory guides are not
copyrighted, and Commission approval
is not required to reproduce them.
(5 U.S.C. 552(a))
Dated at Rockville, Maryland, this 20th day
of June, 2007.
For the U.S. Nuclear Regulatory
Commission.
Jimi T. Yerokun,
Chief,Risk Applications and Special Projects
Branch,Division of Risk Assessment and
Special Projects,Office of Nuclear Regulatory
Research.
[FR Doc. E7–12562 Filed 6–27–07; 8:45 am]
BILLING CODE 7590–01–P
NUCLEAR REGULATORY
COMMISSION
Guidance for Electronic Submissions
to the NRC; Report Available for
Comment
Nuclear Regulatory
Commission.
ACTION: Announcement of issuance for
public comment, availability.
AGENCY:
E:\FR\FM\28JNN1.SGM
28JNN1
Agencies
[Federal Register Volume 72, Number 124 (Thursday, June 28, 2007)]
[Notices]
[Page 35521]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-12562]
-----------------------------------------------------------------------
NUCLEAR REGULATORY COMMISSION
Draft Regulatory Guide: Issuance, Availability
The U.S. Nuclear Regulatory Commission (NRC) has issued for public
comment a draft of a revised existing guide in the agency's Regulatory
Guide Series. This series has been developed to describe and make
available to the public such information as methods that are acceptable
to the NRC staff for implementing specific parts of the NRC's
regulations, techniques that the staff uses in evaluating specific
problems or postulated accidents, and data that the staff needs in its
review of applications for permits and licenses.
The draft regulatory guide, entitled ``Guidance on Monitoring and
Responding to Reactor Coolant System Leakage,'' is temporarily
identified by its task number, DG-1173, which should be mentioned in
all related correspondence.
General Design Criterion (GDC) 14, ``Reactor Coolant Pressure
Boundary,'' as set forth in Appendix A, ``General Design Criteria for
Nuclear Power Plants,'' to Title 10, Part 50, of the Code of Federal
Regulations (10 CFR Part 50), ``Domestic Licensing of Production and
Utilization Facilities'', requires that the reactor coolant pressure
boundary (RCPB) shall be designed, fabricated, erected, and tested so
as to have an extremely low probability of abnormal leakage, of rapidly
propagating failure, and of gross rupture. As a result, these nuclear
components are normally designed to the criteria established in Section
III of the Boiler and Pressure Vessel Code promulgated by the American
Society of Mechanical Engineers.
During the design phase, degradation-resistant materials are
normally specified for reactor coolant system components. However,
materials can degrade as a result of the complex interaction of the
materials, the stresses they encounter, and the normal and upset
operating environments in which they are used. Such material
degradation could lead to the leakage of the reactor coolant.
Consequently, GDC 30, ``Quality of Reactor Coolant Pressure Boundary,''
of Appendix A to 10 CFR Part 50, requires that means shall be provided
for detecting and, to the extent practical, identifying the location of
the source of reactor coolant leakage. Additionally, 10 CFR 50.55a,
``Codes and Standards'', requires the performance of inservice
inspection and testing of nuclear power plant components. Thus, the
concept of defense-in-depth is used to provide assurance that
structural integrity of the RCPB is maintained. This guide describes
methods that the staff of the U.S. Nuclear Regulatory Commission (NRC)
considers acceptable for implementing these requirements, with regard
to selecting reactor coolant leakage detection systems, monitoring for
leakage, and responding to leakage. This guide applies to light-water
cooled reactors.
The NRC staff is soliciting comments on Draft Regulatory Guide DG-
1173. Comments may be accompanied by relevant information or supporting
data, and should mention DG-1173 in the subject line. Comments
submitted in writing or in electronic form will be made available to
the public in their entirety through the NRC's Agencywide Documents
Access and Management System (ADAMS). Personal information will not be
removed from your comments. You may submit comments by any of the
following methods.
Mail comments to: Rulemaking, Directives, and Editing Branch,
Office of Administration, U.S. Nuclear Regulatory Commission,
Washington, DC 20555-0001.
E-mail comments to: NRCREP@nrc.gov. You may also submit comments
via the NRC's rulemaking Web site at https://ruleforum.llnl.gov. Address
questions about our rulemaking Web site to Carol A. Gallagher (301)
415-5905; e-mail CAG@nrc.gov.
Hand-deliver comments to: Rulemaking, Directives, and Editing
Branch, Office of Administration, U.S. Nuclear Regulatory Commission,
11555 Rockville Pike, Rockville, Maryland 20852, between 7:30 a.m. and
4:15 p.m. on Federal workdays.
Fax comments to: Rulemaking, Directives, and Editing Branch, Office
of Administration, U.S. Nuclear Regulatory Commission at (301) 415-
5144.
Requests for technical information about Draft Regulatory Guide DG-
1173 may be directed to NRC Senior Program Manager, Makuteswara
Srinivasan, at (301) 415-6356 or e-mail MXS5@nrc.gov.
Comments would be most helpful if received by 60 days from issuance
of FRN. Comments received after that 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. Although a time limit is
given, comments and suggestions in connection with items for inclusion
in guides currently being developed or improvements in all published
guides are encouraged at any time.
Electronic copies of Draft Regulatory Guide DG-1173 are available
through the NRC's public Web site under Draft Regulatory Guides in the
Regulatory Guides document collection of the NRC's Electronic Reading
Room at https://www.nrc.gov/reading-rm/doc-collections/. Electronic
copies are also available in ADAMS (https://www.nrc.gov/reading-rm/
adams.html), under Accession ML071070410.
In addition, regulatory guides are available for inspection at the
NRC's Public Document Room (PDR), which is located at 11555 Rockville
Pike, Rockville, Maryland. The PDR's mailing address is USNRC PDR,
Washington, DC 20555-0001. The PDR can also be reached by telephone at
(301) 415-4737 or (800) 397-4205, by fax at (301) 415-3548, and by e-
mail to PDR@nrc.gov. Requests for single copies of draft or final
guides (which may be reproduced) should be made in writing to the U.S.
Nuclear Regulatory Commission, Washington, DC 20555-0001, Attention:
Reproduction and Distribution Services Section; by e-mail to
DISTRIBUTION@nrc.gov; or by fax to (301) 415-2289. Telephone requests
cannot be accommodated.
Regulatory guides are not copyrighted, and Commission approval is
not required to reproduce them.
(5 U.S.C. 552(a))
Dated at Rockville, Maryland, this 20th day of June, 2007.
For the U.S. Nuclear Regulatory Commission.
Jimi T. Yerokun,
Chief,Risk Applications and Special Projects Branch,Division of Risk
Assessment and Special Projects,Office of Nuclear Regulatory Research.
[FR Doc. E7-12562 Filed 6-27-07; 8:45 am]
BILLING CODE 7590-01-P