[Federal Register Volume 77, Number 121 (Friday, June 22, 2012)]
[Pages 37717-37718]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2012-15372]




Electrical Cable Test Results and Analysis During Fire Exposure

AGENCY: Nuclear Regulatory Commission.

ACTION: Draft NUREG; request for comment.


SUMMARY: The U.S. Nuclear Regulatory Commission (NRC or the Commission) 
is making the proposed draft, NUREG-2128, ``Electrical Cable Test 
Results and Analysis during Fire Exposure (ELECTRA-FIRE), A 
Consolidation of the Three Major Fire-Induced Circuit and Cable Failure 
Experiments Performed between 2001 and 2011,'' available for public 

DATES: Comments on this document should be submitted by Tuesday, July 
31, 2012. Comments received after that date will be considered to the 
extent practicable. To ensure efficient and complete comment 
resolution, comments should include section, page, and line numbers of 
the document to which the comment applies, if possible.

ADDRESSES: You may access information and comment submissions related 
to this document, which the NRC possesses and are publically available, 
by searching on http://www.regulations.gov under Docket ID NRC-2012-
0146. You may submit comments by the following methods:
     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2012-0146. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-492-
3668; email: [email protected].
     Mail comments to: Cindy Bladey, Chief, Rules, 
Announcements, and Directives Branch (RADB), Office of Administration, 
Mail Stop: TWB-05-B01M, U.S. Nuclear Regulatory Commission, Washington, 
DC 20555-0001.
     Fax comments to: RADB at 301-492-3446.
    For additional direction on accessing information and submitting 
comments, see ``Accessing Information and Submitting Comments'' in the 
SUPPLEMENTARY INFORMATION section of this document.

FOR FURTHER INFORMATION CONTACT: Gabriel Taylor, Office of Nuclear 
Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC 
20555-0001; telephone 301-251-7576; email: [email protected].


I. Accessing Information and Submitting Comments

A. Accessing Information

    Please refer to Docket ID NRC-2012-0146 when contacting the NRC 
about the availability of information regarding this document. You may 
access information related to this document by the following methods:
     Federal Rulemaking Web Site: Go to http://www.regulations.gov and search for Docket ID NRC-2012-0146.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may access publicly-available documents online in the NRC 
Library 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 notice (if that document is 
available in ADAMS) is provided the first time that a document is 
referenced. The proposed draft NUREG-2128 is available in ADAMS under 
Accession Number ML12166A028.
     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.

B. Submitting Comments

    Please include Docket ID NRC-2012-0146 in the subject line of your 
comment submission, in order to ensure that the NRC is able to make 
your comment submission available to the public in this docket.
    The NRC cautions you not to include identifying or contact 
information in comment submissions that you do not want to be publicly 
disclosed. The NRC posts all comment submissions at http://www.regulations.gov as well as entering the comment submissions into 
ADAMS, and the NRC does not 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 in their comment submissions 
that they do not want to be publicly disclosed. Your request should 
state that the NRC will not edit comment submissions to remove such 
information before making the comment submissions available to the 
public or entering the comment submissions into ADAMS.

II. Further Information

    Three major test programs have been conducted to realistically 
explore the electrical functionality of electrical cables under severe 
fire conditions. The Electric Power Research Institute (EPRI) performed 
the first series of tests, followed by two confirmatory testing

[[Page 37718]]

programs sponsored by the Office of Nuclear Regulatory Research. These 
test programs provided a substantial amount of information concerning 
the cable electrical response characteristics for common nuclear power 
plant electrical cable types exposed to severe fire conditions. 
However, the results from these three test programs have never been 
collected and analyzed as a whole to obtain insights to specific 
parameters that may influence the failure modes of electrical cables 
exposed to fire conditions. This report documents such an effort by 
identifying circuit parameters that may influence the failure mode of 
fire damaged electrical cables and then evaluating the test data by 
circuit parameter. This report also provides an analysis of the direct 
current test data specifically looking at the phenomena associated with 
multiple cable shorts to ground resulting in equipment spurious 
operation when a common ungrounded power supply is present.
    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 the information contained within this document 
is correct and accurate. This document is issued for comment only and 
is not intended for interim use. The NRC will review public comments 
received on the document, incorporate suggested changes as necessary, 
and make the final NUREG-report available to the public.

    Dated at Rockville, Maryland, this 15th day of June 2012.

    For the Nuclear Regulatory Commission.
David W. Stroup,
Acting Chief Fire Research Branch, Division of Risk Analysis, Office of 
Nuclear Regulatory Research.
[FR Doc. 2012-15372 Filed 6-21-12; 8:45 am]