[Federal Register Volume 75, Number 11 (Tuesday, January 19, 2010)]
[Page 2894]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-816]

[[Page 2894]]




Withdrawal of Regulatory Guide 1.148

AGENCY: Nuclear Regulatory Commission.

ACTION: Withdrawal of Regulatory Guide 1.148, ``Functional 
Specification for Active Valve Assemblies in Systems Important to 
Safety in Nuclear Power Plants.''


Regulatory Commission, Washington, DC 20555-0001, telephone: 301-251-
7447 or e-mail [email protected].


I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC) is withdrawing 
Regulatory Guide (RG) 1.148, ``Functional Specification for Active 
Valve Assemblies in Systems Important to Safety in Nuclear Power 
Plants.'' RG 1.148 was published in March 1981. It endorsed the 
guidance provided by the American Society of Mechanical Engineers/
American National Standards Institute (ASME/ANSI) standard N278.1-1975 
and addressed the functional specification for active valve assemblies 
(e.g., Motor Operated Valve (MOV) actuators). ASME/ANSI Standard 
N278.1-1975 has been superseded by ASME QME-1, which defines 
requirements and provides guidelines for qualifying active mechanical 
equipment used in nuclear power plants.
    The NRC is withdrawing RG 1.148 because the guidance it provides is 
outdated, and is essentially replaced by the recently issued Revision 3 
of RG 1.100, ``Seismic Qualification of Electric and Mechanical 
Equipment for Nuclear Power Plants,'' which endorses ASME QME-1.

II. Further Information

    The withdrawal of RG 1.148 does not alter any prior or existing 
licensing commitments based on its use. The guidance provided in this 
regulatory guide is neither necessary nor current. 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may be withdrawn when their guidance is superseded by congressional 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, Maryland 20852-2738. The PDR's mailing 
address is US NRC PDR, Washington, DC 20555-0001. You can reach the PDR 
staff 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 Commission approval is 
not required to reproduce them.

    Dated at Rockville, Maryland, this 11th day of January, 2010.

    For the Nuclear Regulatory Commission.
Andrea D. Valentin,
Chief, Regulatory Guide Development Branch, Division of Engineering, 
Office of Nuclear Regulatory Research.
[FR Doc. 2010-816 Filed 1-15-10; 8:45 am]