[Federal Register Volume 75, Number 192 (Tuesday, October 5, 2010)]
[Notices]
[Page 61521]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-24914]


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NUCLEAR REGULATORY COMMISSION

[NRC-2010-0316]


NUREG/CR-7010, Cable Heat Release, Ignition, and Spread in Tray 
Installations During Fire (CHRISTIFIRE); Volume 1: Horizontal Trays, 
Draft Report for Comment

AGENCY: Nuclear Regulatory Commission.

ACTION: Announcement of issuance for public comment, availability.

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SUMMARY: The Nuclear Regulatory Commission has issued for public 
comment a document entitled: ``NUREG/CR-7010, Cable Heat Release, 
Ignition, and Spread in Tray Installations During Fire (CHRISTIFIRE) 
Volume 1: Horizontal Trays, Draft Report for Comment.''

DATES: Please submit comments by November 15, 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-2010-0316 in the subject line of your 
comments. Comments submitted in writing or in electronic form will be 
posted on the NRC website 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-2010-0316. Address 
questions about NRC dockets to Carol Gallagher 301-492-3668; e-mail 
<a href="/cdn-cgi/l/email-protection#e1a280938e8dcfa6808d8d8086898493a18f9382cf868e97"><span class="__cf_email__" data-cfemail="a9eac8dbc6c587eec8c5c5c8cec1ccdbe9c7dbca87cec6df">[email protected]</span></a>.
    Mail comments to: Cindy K. Bladey, Chief, Rules, Announcements and 
Directives Branch (RADB), 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 RADB at (301) 492-
3446.
    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 
<a href="/cdn-cgi/l/email-protection#ee9e8a9cc09c8b9d819b9c8d8bae809c8dc0898198"><span class="__cf_email__" data-cfemail="1f6f7b6d316d7a6c706a6d7c7a5f716d7c31787069">[email protected]</span></a>. ``NUREG/CR-7010, Cable Heat Release, Ignition, 
and Spread in Tray Installations During Fire (CHRISTIFIRE) Volume 1: 
Horizontal Trays'' is available electronically under ADAMS Accession 
Number ML102700336.
    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-2010-0316.

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: <a href="/cdn-cgi/l/email-protection#7e3a1f08171a502d0a0c110b0e3e100c1d50191108"><span class="__cf_email__" data-cfemail="793d180f101d572a0d0b160c0939170b1a571e160f">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION: NUREG/CR-7010, Volume 1 documents the first 
phase of a multi-year program called CHRISTIFIRE (Cable Heat Release, 
Ignition, and Spread in Tray Installations during FIRE). The overall 
goal of the program is to quantify the burning characteristics of 
grouped electrical cables. The first phase of the program focuses on 
horizontal tray configurations. The experiments conducted range from 
micro-scale, in which very small (5 mg) samples of cable materials were 
burned in a calorimeter to determine their heat of combustion and other 
properties; to full-scale, in which horizontal, ladder-back trays 
loaded with varying amounts of cable were burned under a large oxygen-
depletion calorimeter. Other experiments include cone calorimetry, 
smoke and effluent characterization in a small test furnace, and 
intermediate-scale calorimetry involving a single tray of cables 
underneath a bank of radiant panels. The results of the small-scale 
experiments are to serve as input data for fire models, while the 
results of the full-scale experiments are to serve as validation data 
for the models.

    Dated at Rockville, Maryland, this 28th day of September 2010.

    For the Nuclear Regulatory Commission.
Mark H. Salley,
Chief, Fire Research Branch, Division of Risk Analysis, Office of 
Nuclear Regulatory Research.
[FR Doc. 2010-24914 Filed 10-4-10; 8:45 am]
BILLING CODE 7590-01-P


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