Testing of Pressurized Water Reactors Emergency Core Cooling Systems

Testing of Pressurized Water Reactors Emergency Core Cooling Systems

[Federal Register Volume 76, Number 109 (Tuesday, June 7, 2011)]
[Proposed Rules]
[Pages 32878-32879]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-13970]


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Proposed Rules
                                                Federal Register
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This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

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Federal Register / Vol. 76, No. 109 / Tuesday, June 7, 2011 / 
Proposed Rules

[[Page 32878]]


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NUCLEAR REGULATORY COMMISSION

10 CFR Part 50

[NRC-2011-0129]


Draft Regulatory Guide: Issuance, Availability

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of Issuance and Availability of Draft Regulatory Guide, 
DG-1253, ``Preoperational Testing of Emergency Core Cooling Systems for 
Pressurized-Water Reactors''.

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FOR FURTHER INFORMATION CONTACT: Mekonen M. Bayssie, Regulatory Guide 
Development Branch, Division of Engineering, Office of Nuclear 
Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC 
20555-0001, telephone: 301-251-7489 or e-mail: Mekonen Bayssie@nrc.gov.

SUPPLEMENTARY INFORMATION:

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, ``Preoperational Testing 
of Emergency Core Cooling Systems for Pressurized-Water Reactors,'' is 
temporarily identified by its task number, DG-1253, which should be 
mentioned in all related correspondence. DG-1253 is proposed Revision 2 
of Regulatory Guide 1.79, dated September 1975.
    This guide describes methods that the NRC's staff considers 
acceptable to implement Title 10, of the Code of Federal Regulations, 
part 50, ``Domestic Licensing of Production and Utilization 
Facilities'' (10 CFR part 50), Appendix A, ``General Design Criteria 
for Nuclear Power Plants,'' with regard to preoperational testing 
features of emergency core cooling systems (ECCSs) for pressurized-
water reactors (PWRs). This regulatory guide also describes methods 
that the NRC staff finds acceptable for preoperational testing of ECCS 
structures, systems, and components (SSCs), in accordance with the 
regulations in 10 CFR part 52, ``Licenses, Certifications, and 
Approvals for Nuclear Power Plants,'' Subpart B, ``Standard Design 
Certifications,'' and Subpart C,'' Combined Licenses.''