[Federal Register Volume 74, Number 136 (Friday, July 17, 2009)]
[Page 34804]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E9-17048]




Withdrawal of Regulatory Guide

AGENCY: Nuclear Regulatory Commission.

ACTION: Withdrawal of Regulatory Guide 6.3, ``Design, Construction, and 
Use of Radioisotopic Power Generators for Certain Land and Sea 


Regulatory Commission, Washington, DC 20555-0001, telephone 301-251-
7483 or e-mail [email protected].


I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC) is withdrawing 
Regulatory Guide (RG) 6.3, ``Design, Construction, and Use of 
Radioisotopic Power Generators for Certain Land and Sea Applications,'' 
published in March 1974. RG 6.3 provides guidance on the safe design, 
construction, and use of radioisotopic power generators. The NRC is 
withdrawing this regulatory guide because it is no longer required.
    RG 6.3 supported activities requiring a license pursuant to Title 
10 of the Code of Federal Regulations, Parts 30, 40, and 70. The 
guidance in RG 6.3 applies to types of devices that are no longer used 
and have been replaced by other technology. Therefore, no licensing 
actions for these devices are being submitted or reviewed by license 
reviewers and the guidance is no longer needed.

II. Further Information

    The withdrawal of RG 6.3 does not alter any prior or existing 
licensing commitments based on its use. The guidance provided in this 
regulatory guide is no longer necessary. Regulatory guides may be 
withdrawn when their guidance is superseded by congressional action or 
no longer provides useful information.
    Regulatory guides are available for inspection or downloading 
through the NRC's public Web site under ``Regulatory Guides'' in the 
NRC's Electronic Reading Room at http://www.nrc.gov/reading-rm/doc-collections. Regulatory guides are also available for inspection at the 
NRC's Public Document Room (PDR), Room O-1 F21, One White Flint North, 
11555 Rockville Pike, Rockville, MD 20852-2738. The PDR's mailing 
address is US NRC PDR, Washington, DC 20555-0001. The PDR staff can be 
reached by telephone at 301-415-4737 or 800-397-4209, by fax at 301-
415-3548, and by e-mail to [email protected].
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

    Dated at Rockville, Maryland, this 29th day of June 2009.

    For the Nuclear Regulatory Commission.
R.A. Jervey,
Acting Chief, Regulatory Guide Development Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. E9-17048 Filed 7-16-09; 8:45 am]