[Federal Register Volume 75, Number 21 (Tuesday, February 2, 2010)]
[Pages 5355-5356]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-2168]




Notice of Extension of Comment Period for NUREG-1934, Nuclear 
Power Plant Fire Modeling Application Guide (NPP FIRE MAG), Draft 
Report for Comment

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of extension of comment period.


SUMMARY: The Nuclear Regulatory Commission (NRC) published a notice of 
opportunity for public comment on ``NUREG-1934 (EPRI 1019195), Nuclear 
Power Plant Fire Modeling Application Guide (NPP FIRE MAG), Draft 
Report for Comment'' in the Federal Register (74 FR 68873) on December 
29, 2009. Issues encountered during the holiday season delayed 
publication of NUREG-1934. In addition, the final document has been 
revised to correct some editorial issues resulting from the conversion 
to a pdf file.

DATES: The public comment period was to end on March 10, 2010. This 
notice announces an extension of the public comment period until April 
30, 2010. Comments received after this date will be considered if it is 
practical to do so, but the NRC staff is able to ensure consideration 
only for comments received on or before this date.

ADDRESSES: You may submit comments by any one of the following methods. 
Please include Docket ID NRC-2009-0568 in the subject line of your

[[Page 5356]]

comments. Comments submitted in writing or in electronic form will be 
posted on the NRC Web site and on the Federal rulemaking Web site 
Regulations.gov. Because your comments will not be edited to remove any 
identifying or contact information, the NRC cautions you against 
including any information in your submission that you do not want to be 
publicly disclosed.
    The NRC requests that any party soliciting or aggregating comments 
received from other persons for submission to the NRC inform those 
persons that the NRC will not edit their comments to remove any 
identifying or contact information, and, therefore, they should not 
include any information in their comments that they do not want 
publicly disclosed.
    Federal Rulemaking Web site: Go to http://www.regulations.gov and 
search for documents filed under Docket ID NRC-2009-0568. Address 
questions about NRC dockets to Carol Gallagher 301-492-3668; e-mail 
[email protected].
    Mail comments to: Michael T. Lesar, Chief, Rulemaking and 
Directives Branch (RDB), Division of Administrative Services, Office of 
Administration, Mail Stop: TWB-05-B01M, U.S. Nuclear Regulatory 
Commission, Washington, DC 20555-0001, or by fax to RDB at (301) 492-
    You can access publicly available documents related to this notice 
using the following methods:
    NRC's Public Document Room (PDR): The public may examine and have 
copied, for a fee, publicly available documents at the NRC's PDR, 
Public File Area O1 F21, One White Flint North, 11555 Rockville Pike, 
Rockville, Maryland.
    NRC's Agencywide Documents Access and Management System (ADAMS): 
Publicly available documents created or received at the NRC are 
available electronically at the NRC's Electronic Reading Room at http://www.nrc.gov/reading-rm/adams.html. From this page, the public can gain 
entry into ADAMS, which provides text and image files of NRC's public 
documents. If you do not have access to ADAMS or if there are problems 
in accessing the documents located in ADAMS, contact the NRC's PDR 
reference staff at 1-800-397-4209, 301-415-4737, or by e-mail to 
[email protected]. NUREG-1934 ``Nuclear Power Plant Fire Modeling 
Application Guide (NPP FIRE MAG)'' is available electronically under 
ADAMS Accession Number ML093500187. Electronic copies are also 
available through the NRC's public Web site under Drafts for Comment in 
the NUREG-series Publications collection of the NRC's Electronic 
Reading Room at http://www.nrc.gov/reading-rm/doc-collections/.
    Federal Rulemaking Web site: Public comments and supporting 
materials related to this notice can be found at http://www.regulations.gov by searching on Docket ID: NRC-2009-0568.

FOR FURTHER INFORMATION CONTACT: David Stroup, Division of Risk 
Analysis, Office of Nuclear Regulatory Research, U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001. Telephone: 301-251-
7609, e-mail: [email protected].

SUPPLEMENTARY INFORMATION: There is a movement to introduce risk-
informed and performance-based (RI/PB) analyses into fire protection 
engineering practice. This movement exists in both the general fire 
protection and the nuclear power plant (NPP) fire protection 
communities. The U.S. Nuclear Regulatory Commission (NRC) has used 
risk-informed insights as a part of its regulatory decision making 
since the 1990s. In 2002, the National Fire Protection Association 
developed NFPA 805, Performance-Based Standard for Fire Protection for 
Light-Water Reactor Electric Generating Plants. In July 2004, the NRC 
amended its fire protection requirements in Title 10, Section 50.48, of 
the Code of Federal Regulations to permit existing reactor licensees to 
voluntarily adopt fire protection requirements contained in NFPA 805 as 
an alternative to the existing deterministic requirements. NUREG-1934 
(EPRI 1019195), ``Nuclear Power Plant Fire Modeling Application Guide, 
Draft Report for Comment'' was written as a collaborative effort by the 
U.S. Nuclear Regulatory Commission (NRC) Office of Nuclear Regulatory 
Research (RES), the Electric Power Research Institute (EPRI), and the 
National Institute of Standards and Technology (NIST) to provide 
guidance on using fire modeling for nuclear power plant applications. 
The features and limitations of the five fire models documented in 
NUREG-1824 (EPRI 1011999), Verification & Validation of Selected Fire 
Models for Nuclear Power Plant Applications are discussed relative to 
NPP applications. Finally, the report describes the implications of 
verified and validated (V&V) fire models that can reliably predict the 
consequences of fires.

    Dated at Rockville, Maryland, this 27th day of January 2010.

    For the Nuclear Regulatory Commission.
Mark H. Salley,
Chief, Fire Research Branch, Division of Risk Analysis, Office of 
Nuclear Regulatory Research.
[FR Doc. 2010-2168 Filed 2-1-10; 8:45 am]