[Federal Register Volume 76, Number 198 (Thursday, October 13, 2011)]
[Rules and Regulations]
[Pages 63541-63542]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-26420]


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NUCLEAR REGULATORY COMMISSION

10 CFR Parts 50 and 52

[NRC-2010-0288]


Design-Basis Hurricane and Hurricane Missiles for Nuclear Power 
Plants

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide; issuance.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC or the Commission) 
is issuing a new regulatory guide, (RG) 1.221, ``Design-Basis Hurricane 
and Hurricane Missiles for Nuclear Power Plants.'' This regulatory 
guide provides licensees and applicants with new guidance that the 
staff of the NRC considers acceptable for use in selecting the design-
basis hurricane and design-basis hurricane-generated missiles that a 
nuclear power plant should be designed to withstand to prevent undue 
risk to the health and safety of the public.

DATES: October 13, 2011.

ADDRESSES: You can access publicly available documents related to this 
regulatory guide 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, O1-F21, One White Flint North, 11555 Rockville Pike, Rockville, 
Maryland 20852.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): Publicly available documents created or received at the NRC 
are available online in the NRC Library 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 the 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 pdr.resource@nrc.gov.
     Federal Rulemaking Web Site: Public comments and 
supporting materials related to this guide can be found at http://www.regulations.gov by searching on Docket ID NRC-2010-0288.
    Regulatory guides are not copyrighted, and Commission approval is 
not required to reproduce them.

FOR FURTHER INFORMATION CONTACT: Robert Carpenter, U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001, telephone: 301-251-
7483 or e-mail Robert.Carpenter@nrc.gov.

SUPPLEMENTARY INFORMATION:

I. Introduction

    The NRC is issuing a new guide in the agency's ``Regulatory Guide'' 
series. This series was developed to describe and make available to the 
public information such as methods that are acceptable to the NRC staff 
for implementing specific parts of the agency's regulations, techniques 
that the

[[Page 63542]]

staff uses in evaluating specific problems or postulated accidents, and 
data that the staff needs in its review of applications for permits and 
licenses.
    RG 1.221 was issued with a temporary identification as Draft 
Regulatory Guide, DG-1247. This regulatory guide provides licensees and 
applicants with new guidance that the staff of the NRC considers 
acceptable for use in selecting the design-basis hurricane and design-
basis hurricane-generated missiles that a nuclear power plant should be 
designed to withstand to prevent undue risk to the health and safety of 
the public. This guidance applies to the contiguous United States but 
does not address the determination of the design-basis hurricane and 
hurricane missiles for sites located along the Pacific coast or in 
Alaska, Hawaii, or Puerto Rico; the NRC will evaluate such 
determinations on a case-by-case basis. This guide also does not 
identify the specific structures, systems, and components that should 
be designed to withstand the effects of the design-basis hurricane or 
should be protected from hurricane-generated missiles and remain 
functional. Nor does this guide address other externally generated 
hazards, such as aviation crashes, nearby accidental explosions 
resulting in blast overpressure levels and explosion-borne debris and 
missiles, and turbine missiles.

II. Further Information

    In August 2010, DG-1247 was published with a public comment period 
of 60 days from the issuance of the guide. The public comment period 
closed on November 5, 2010. Electronic copies of Regulatory Guide 1.221 
are available through the NRC's public Web site under ``Regulatory 
Guides'' at http://www.nrc.gov/reading-rm/doc-collections/ and through 
the NRC's Agencywide Documents Access and Management System (ADAMS) at 
http://www.nrc.gov/reading-rm/adams.html, under Accession No. 
ML110940300. The regulatory analysis may be found in ADAMS under 
Accession No. ML110940303. Staff's responses to public comments on DG-
1247 are available under ML110940334.

    Dated at Rockville, Maryland, this 3rd day of October 2011.

    For the Nuclear Regulatory Commission.
Thomas H. Boyce,
Chief, Regulatory Guide Development Branch, Division of Engineering, 
Office of Nuclear Regulatory Research.
[FR Doc. 2011-26420 Filed 10-12-11; 8:45 am]
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