20 July 2011
Explosions Nearby Nuclear Plants and Transport
[Federal Register Volume 76, Number 139 (Wednesday, July 20, 2011)]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-18270]
NUCLEAR REGULATORY COMMISSION
Evaluations of Explosions Postulated To Occur at Nearby
Facilities and on Transportation Routes Near Nuclear Power Plants
AGENCY: Nuclear Regulatory Commission.
ACTION: Draft regulatory guide; request for comment.
SUMMARY: The U.S. Nuclear Regulatory Commission (NRC or the Commission)
is issuing for public comment draft regulatory guide (DG), DG-1270,
``Evaluations of Explosions Postulated to Occur at Nearby Facilities
and on Transportation Routes Near Nuclear Power Plants''. This draft
regulatory guide describes for applicants and licensees of nuclear
power reactors some methods and assumptions the NRC's staff finds
acceptable for evaluating postulated explosions at nearby facilities
and transportation routes.
DATES: Submit comments by September 19, 2011. Comments received after
this date will be considered if it is practical to do so, but the NRC
is able to ensure consideration only for comments received on or before
this date. Although a time limit is given, comments and suggestions in
connection with items for inclusion in guides currently being developed
or improvements in all published guides are encouraged at any time.
ADDRESSES: Please include Docket ID NRC-2011-0152 in the subject line
of your comments. Comments submitted in writing or in electronic form
will be posted on the NRC Web site and on the Federal rulemaking Web
site, http://www.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. You may submit comments by any one of the following
Federal Rulemaking Web Site: Go to http://www.regulations.gov and
search for documents filed under Docket ID NRC-
2011-0152. Address questions about NRC dockets to Carol Gallagher,
telephone: 301-492-3668; e-mail: Carol.Gallagher@nrc.gov.
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,
Fax comments to: RADB at 301-492-3446.
You can access publicly available documents related to this draft
regulatory guide 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, O1-F21, One White Flint North, 11555 Rockville Pike, Rockville,
NRC's Agencywide Documents Access and Management System
(ADAMS): Publicly available documents created or received at the NRC
are available online in the NRC Library 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 the 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 firstname.lastname@example.org.
The draft regulatory guide is available electronically under ADAMS
Accession Number ML110390554. The regulatory analysis is available
electronically under ADAMS Accession Number ML110400261.
Federal Rulemaking Web Site: Public comments and
supporting materials related to this draft regulatory guide can be
found at http://www.regulations.gov by searching on Docket ID NRC-2011-
Electronic copies of DG-1270 are available through the NRC's public
Web site under Draft Regulatory Guides in the ``Regulatory Guides''
collection of the NRC's Library at http://www.nrc.gov/reading-rm/doc-
Regulatory guides are not copyrighted, and Commission approval is
not required to reproduce them.
FOR FURTHER INFORMATION CONTACT: Mekonen Bayssie, U.S. Nuclear
Regulatory Commission, Washington, DC 20555-0001; telephone: 301-251-
7489; e-mail: Mekonen.Bayssie@nrc.gov.
SUPPLEMENTARY INFORMATION: The NRC is issuing for public comment a
draft guide in the NRC's ``Regulatory Guide'' series. This series was
developed to describe and make available to the public such information
as methods that are acceptable to the NRC staff for implementing
specific parts of the NRC's regulations, techniques that the staff uses
in evaluating specific problems or postulated accidents, and data that
the staff needs in its review of applications for permits and licenses.
The draft regulatory guide is temporarily identified by its task
number, DG-1270, which should be mentioned in all related
correspondence. The DG-1270 is proposed Revision 2 of Regulatory Guide
1.91, dated February 1978.
This guide describes for applicants and licensees of nuclear power
reactors some methods and assumptions the NRC's staff finds acceptable
for evaluating postulated explosions at nearby facilities and
transportation routes. It describes the calculation of safe distances
based on estimates of TNT-equivalent mass of explosive materials, the
calculation of exposure rates based on hazardous cargo transportation
frequencies, and the calculation of blast load effects.
Dated at Rockville, Maryland, this 13th day of July 2011.
For the Nuclear Regulatory Commission.
Thomas H. Boyce,
Chief, Regulatory Guide Development Branch, Division of Engineering,
Office of Nuclear Regulatory Research.
[FR Doc. 2011-18270 Filed 7-19-11; 8:45 am]
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