[Federal Register Volume 75, Number 185 (Friday, September 24, 2010)]
[Pages 58444-58445]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-23950]




Draft Regulatory Guide: Issuance, Availability

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of Issuance and Availability of Draft Regulatory Guide, 
DG-1244, ``Availability of Electric Power Sources.''


Regulatory Commission, Washington, DC 20555-0001, telephone: (301) 251-
7627 or e-mail [email protected].


I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC) is issuing for public 
comment a draft guide in the agency'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 (DG), entitled, ``Availability of 
Electric Power Sources'' temporarily identified by its task number, DG-
1244, which should be mentioned in all related correspondence. DG-1244 
is proposed Revision 1 of Regulatory Guide 1.93, dated May 1974. This 
regulatory guide describes guidelines that the staff of the U.S. 
Nuclear Regulatory Commission (NRC) considers acceptable when the 
available electric power sources are less than the number of sources 
required by the limiting conditions for operation (LCOs) for a 
facility. This regulatory guide is applicable to single- and multiple-
unit plants and is consistent with the improved Standard Technical 
Specifications (iSTS). The LCO-required

[[Page 58445]]

actions and specified completion times referred to in this regulatory 
guide are based on the completion times presented in Regulatory Guide 
1.93, ``Availability of Electric Power Sources,'' Revision 0, issued 
December 1974, which have been incorporated into the required actions 
in the iSTS.

II. Further Information

    The NRC staff is soliciting comments on DG-1244. Comments may be 
accompanied by relevant information or supporting data and should 
mention DG-1244 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).
    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 
    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 of the following 
    1. Mail comments to: Rules, Announcements, and Directives Branch, 
Mail Stop: TWB-05-B01M, Office of Administration, U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001.
    2. Federal e-Rulemaking Portal: Go to http://www.regulations.gov 
and search for documents filed under Docket ID [NRC-2010-0305]. Address 
questions about NRC dockets to Carol Gallagher, 301-492-3668; e-mail 
[email protected].
    3. Fax comments to: Rules, Announcements, and Directives Branch, 
Office of Administration, U.S. Nuclear Regulatory Commission at (301) 
    Comments would be most helpful if received by November 26, 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.
    Requests for technical information about DG-1244 may be directed to 
the NRC contact, Satish Aggarwal at (301) 251-7627 or e-mail 
[email protected].
    Electronic copies of DG-1244 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/. Electronic copies are also available in 
ADAMS (http://www.nrc.gov/reading-rm/adams.html), under Accession No. 
    In addition, regulatory guides are available for inspection at the 
NRC's Public Document Room (PDR) located at 11555 Rockville Pike, 
Rockville, Maryland. The PDR's mailing address is USNRC PDR, 
Washington, DC 20555-0001. The PDR can also be reached by telephone at 
(301) 415-4737 or (800) 397-4205, by fax at (301) 415-3548, and by e-
mail to [email protected].
    Regulatory guides are not copyrighted, and Commission approval is 
not required to reproduce them.

    Dated at Rockville, Maryland, this 17th day of September, 2010.

    For the Nuclear Regulatory Commission.
Harriet Karagiannis,
Acting Chief, Regulatory Guide Development Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2010-23950 Filed 9-23-10; 8:45 am]