[Federal Register Volume 80, Number 84 (Friday, May 1, 2015)]
[Notices]
[Pages 24981-24982]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-10128]
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NUCLEAR REGULATORY COMMISSION
[NRC-2015-0060]
Heat Release Rates of Electrical Enclosure Fires (HELEN-FIRE)
AGENCY: Nuclear Regulatory Commission.
ACTION: Draft NUREG; request for comment.
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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing for
public comment a draft NUREG, NUREG/CR-7197, ``Heat Release Rates of
Electrical Enclosure Fires (HELEN-FIRE).''
DATES: Submit comments by June 15, 2015. Comments received after this
date will be considered if it is practical to do so, but the Commission
is able to ensure consideration only for comments received before this
date.
ADDRESSES: You may submit comments by any of the following methods
(unless this document describes a different method for submitting
comments on a specific subject):
Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2015-0060. Address
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: [email protected]. For technical questions, contact
the individual listed in the FOR FURTHER INFORMATION CONTACT section of
this document.
Mail comments to: Cindy Bladey, Office of Administration,
Mail Stop: OWFN-12-H08, U.S. Nuclear Regulatory Commission, Washington,
DC 20555-0001.
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: David Stroup, Office of Nuclear
Regulatory Research; telephone: 301-251-7609; email:
[email protected]; 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-2015-0060 when contacting the NRC
about the availability of information for this action. You may obtain
publicly-available information related to this action by any of the
following methods:
Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2015-0060.
NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly-available documents online in the
ADAMS Public Documents collection 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 (if it is available
in ADAMS) is provided the first time that it is mentioned in the
SUPPLEMENTARY INFORMATION section. Draft NUREG/CR-7197, ``Heat Release
Rates of Electrical Enclosure Fires (HELEN-FIRE)'' is available in
ADAMS under Accession No. ML15075A495.
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-2015-0060 in the subject line of your
comment submission.
The NRC cautions you not to include identifying or contact
information that you do not want to be publically disclosed in your
comment submission. The NRC will post all comment submissions at http://www.regulations.gov as well as enter 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
[[Page 24982]]
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 into ADAMS.
II. Discussion
Electrical enclosures are a potential source of fire in nuclear
power plants because they contain both combustible materials and live
electrical circuits. These fires have the potential to disrupt power,
instrumentation, and control in the plant. Key parameters affecting
fire in an electrical enclosure include its size, openings, electrical
voltage, and combustible load. This report documents the results from
112 full-scale experiments conducted by the National Institute of
Standards and Technology at the Chesapeake Bay Detachment of the Naval
Research Laboratory to better quantify the heat release rate (HRR) and
burning behavior of electrical enclosures. Eight electrical enclosures
were acquired from Bellefonte Nuclear Generating Station, a plant owned
by the Tennessee Valley Authority located in Hollywood, Alabama. The
enclosures were originally low voltage control cabinets, but in the
experiments they were reconfigured with various amounts and types of
electrical cable to represent other kinds of enclosures that would be
found in a typical plant. An oxygen consumption calorimeter was built
on site to measure the HRR of the fire as a function of time. The peak
HRR varied from 0.3 kW to 576 kW.
Dated at Rockville, Maryland, this 21st day of April 2015.
For the Nuclear Regulatory Commission.
Mark Henry Salley,
Chief, Fire Research Branch, Division of Risk Analysis, Office of
Nuclear Regulatory Research.
[FR Doc. 2015-10128 Filed 4-30-15; 8:45 am]
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