[Federal Register Volume 72, Number 105 (Friday, June 1, 2007)]
[Notices]
[Page 30645]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-10611]


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NUCLEAR REGULATORY COMMISSION


NUREG/CR-6931 Volume 1, ``CAROLFIRE Test Report Volume 1: General 
Test Descriptions and the Analysis of Circuit Response Data, Draft for 
Public Comment,'' and NUREG/CR-6931 Volume 2, ``CAROLFIRE Test Report 
Volume 2: Cable Fire Response Data for Fire Model Improvement, Draft 
for Public Comment--Revision 1''

AGENCY: Nuclear Regulatory Commission (NRC).

ACTION: Notice of availability of ``CAROLFIRE Test Report Volume 1: 
General Test Descriptions and the Analysis of Circuit Response Data, 
Draft for Public Comment,'' and ``CAROLFIRE Test Report Volume 2: Cable 
Fire Response Data for Fire Model Improvement, Draft for Public 
Comment--Revision 1,'' and request for public comment.

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SUMMARY: The NRC is making NUREG/CR-6931 Volume 1, ``CAROLFIRE Test 
Report Volume 1: General Test Descriptions and the Analysis of Circuit 
Response Data, Draft for Public Comment,'' and NUREG/CR-6931 Volume 2, 
``CAROLFIRE Test Report Volume 2: Cable Fire Response Data for Fire 
Model Improvement, Draft for Public Comment--Revision 1'' available for 
public comment for a period of 45 days.

DATES: Comments on these documents should be submitted during the 45-
day public comment period. Comments received after that date will be 
considered to the extent practicable. To ensure efficient and complete 
comment resolution, comments should include volume, section, page, and 
line numbers of the document to which the comment applies, if possible.

ADDRESSES: Members of the public are invited and encouraged to submit 
written comments to Michael Lesar, Chief, Rulemaking, Directives and 
Editing Branch, Office of Administration, Mail Stop T6-D59, U.S. 
Nuclear Regulatory Commission, Washington, DC 20555-0001. Comments can 
also be hand delivered to Michael Lesar, 11545 Rockville Pike, 
Rockville, MD, between 7:30 a.m. and 4:15 p.m. on Federal workdays. 
Comments may also be sent electronically to [email protected].
    These documents are available at the Agencywide Documents Access 
and Management System (ADAMS) Public Electronic Reading Room on the 
Internet at the NRC Web site at http://www.nrc.gov/reading-rm/adams.html under Accession No. ML071300299; on the NRC Web site at 
http://www.nrc.gov/reading-rm/doc-collections/nuregs/docs4comment.html; 
and at the NRC Public Document Room, 11555 Rockville Pike, Rockville, 
MD. The PDR's mailing address is USNRC PDR, Washington, DC 20555; 
telephone (301) 415-4737 or (800) 397-4205; fax (301) 415-3548; e-mail 
[email protected].

FOR FURTHER INFORMATION CONTACT: Mark H. Salley, Fire Research Branch, 
Materials Engineering Directorate, Office of Nuclear Regulatory 
Research, telephone (301) 415-2840, e-mail [email protected].

SUPPLEMENTARY INFORMATION: The purpose of NUREG/CR-6931 Volume 1 
entitled ``CAROLFIRE Test Report Volume 1: General Test Descriptions 
and the Analysis of Circuit Response Data, Draft for Public Comment,'' 
is to document the fire test data taken during the Cable Response to 
Live Fire (CAROLFIRE) testing program to resolve ``Bin 2 items'' 
identified in Regulatory Issue Summary (RIS) 2004-03. RIS 2004-03 
clarifies the scope of regulatory compliance inspections related to 
post-fire safe shutdown circuit analysis, and specifically, the cable 
failure modes effects analysis including spurious operation of plant 
equipment. The relevant Bin 2 items represent those cable failure mode 
configurations for which current data and understanding were lacking 
when the RIS was issued; CAROLFIRE provides that data.
    The purpose of NUREG/CR-6931 Volume 2 entitled ``CAROLFIRE Test 
Report Volume 2: Cable Fire Response Data for Fire Model Improvement, 
Draft for Public Comment--Revision 1,'' is to document the fire data 
taken during the CAROLFIRE program to foster the development of 
tailored cable thermal response and electrical failure fire modeling 
tools. This represents an extension of ongoing NRC fire model 
Verification and Validation efforts that address a recognized gap in 
current fire modeling capabilities.
    The NRC is seeking public comment in order to receive feedback from 
the widest range of interested parties and to ensure that all 
information relevant to developing this document is available to the 
NRC staff. These documents are issued for comment only and are not 
intended for interim use. The NRC will review public comments received 
on the documents, incorporate suggested changes as necessary, and issue 
the final NUREG/CR-6931 Volumes 1 and 2 for use.

    Dated at Rockville, MD, this 21st day of May 2007.

    For the Nuclear Regulatory Commission.
Mark A. Cunningham,
Director, Division of Fuel, Engineering and Radiological Research, 
Office of Nuclear Regulatory Research.
[FR Doc. E7-10611 Filed 5-31-07; 8:45 am]
BILLING CODE 7590-01-P