[Federal Register Volume 75, Number 135 (Thursday, July 15, 2010)]
[Pages 41241-41242]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-17251]




Draft Regulatory Guide; Issuance, Availability

AGENCY: Nuclear Regulatory Commission.

ACTION: Issuance, availability of Draft Regulatory Guide (DG)-1234.


ADDRESSES: You may submit comments by any one of the following methods. 
Please include Docket ID NRC-2010-0249 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 
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.

    R. A. Jervey, U.S. Nuclear Regulatory Commission, Washington, DC 
20555-0001, telephone: (301) 251-7404 or e-mail [email protected].


I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC) has issued for public 
comment a draft guide in the agency's ``Regulatory Guide'' series. This 

[[Page 41242]]

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, entitled, ``Water Sources for Long-Term 
Recirculation Cooling Following a Loss-Of-Coolant Accident,'' is 
temporarily identified by its task number, DG-1234, which should be 
mentioned in all related correspondence. DG-1234 is proposed Revision 4 
of Regulatory Guide 1.82. This revision incorporates current state of 
knowledge found during NRC-sponsored research and plant-specific 
analysis and testing applicable to Emergency Core Cooling System (ECCS) 
strainer performance and debris blockage by Loss of Coolant Accident 
(LOCA) generated debris.
    This guide describes methods that the staff of the U.S. Nuclear 
Regulatory Commission considers acceptable to implement requirements 
regarding the sumps and suppression pools that provide water sources 
for emergency core cooling, containment heat removal, or containment 
atmosphere cleanup systems. It also provides guidelines for evaluating 
the adequacy and the availability of the sump or suppression pool for 
long-term recirculation cooling following a loss-of-coolant accident. 
This guide applies to both pressurized-water reactor and boiling-water 
reactor types of light-water reactors.

II. Further Information

    The NRC staff is soliciting comments on DG-1234. Comments may be 
accompanied by relevant information or supporting data, and should 
mention DG-1234 in the subject line. Comments submitted in writing or 
in electronic form will be made available to the public in their 
entirety through the NRC's Agencywide Documents Access and Management 
System (ADAMS). Comments would be most helpful if received by September 
10, 2010. Comments received after that 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.
    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-2010-0249. Address 
questions about NRC dockets to Carol Gallagher 301-492-3668; e-mail 
[email protected].
    Mail comments to: Chief, Rules, Announcements, and Directives 
Branch (RADB), 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, Room 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 
[email protected]. DG-1234 is available electronically under ADAMS 
Accession Number ML092850003. The regulatory analysis may be found in 
ADAMS under Accession No. ML101610267. In addition, electronic copies 
of DG-1234 are available through the NRC=s public Web site under Draft 
Regulatory Guides in the ``Regulatory Guides'' collection of the NRC's 
Electronic Reading Room at http://www.nrc.gov/reading-rm/doc-collections/.
    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-2010-0249.
    Regulatory guides are not copyrighted, and Commission approval is 
not required to reproduce them.

    Dated at Rockville, Maryland, this 8th day of July 2010.

    For the Nuclear Regulatory Commission.
Mark P. Orr,
Acting Chief, Regulatory Guide Development Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2010-17251 Filed 7-14-10; 8:45 am]