[Federal Register Volume 75, Number 54 (Monday, March 22, 2010)]
[Pages 13610-13611]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-6200]



[DC/COL-ISG-020; NRC-2009-0457]

Office of New Reactors; Interim Staff Guidance on Implementation 
of a Seismic Margin Analysis for New Reactors Based on Probabilistic 
Risk Assessment

AGENCY: Nuclear Regulatory Commission (NRC).

ACTION: Notice of availability.


SUMMARY: The NRC is issuing its Final Interim Staff Guidance (ISG) DC/
COL-ISG-020 titled ``Implementation of a Seismic Margin Analysis for 
New Reactors Based on Probabilistic Risk Assessment,'' (Agencywide 
Documents Access and Management System (ADAMS) Accession No. 
ML100491233). This ISG supplements the guidance provided to the staff 
in Section 19.0 of NUREG-0800, ``Standard Review Plan for the Review of 
Safety Analysis Reports for Nuclear Power Plants,'' issued March 2007 
and DC/COL-ISG-03, ``Probabilistic Risk Assessment Information to 
Support Design Certification and Combined License Applications,'' dated 
June 11, 2008 (ADAMS Accession No. ML081430087) concerning the review 
of probabilistic risk assessment (PRA) information and severe accident 
assessments submitted to support design certification (DC) and combined 
license (COL) applications. The NRC staff intends to incorporate DC/
COL-ISG-020 into the next revision of SRP Section 19.0 and Regulatory 
Guide 1.206, ``Combined License Applications for Nuclear Power Plants 
(LWR Edition),'' June 2007.
    Disposition: On October 16, 2009, the NRC staff issued the proposed 
ISG, DC/COL-ISG-020 ``Implementation of a Seismic Margin Analysis for 
New Reactors Based on Probabilistic Risk Assessment,'' (ADAMS Accession 
No. ML092650316) to solicit public and industry comment. The NRC staff 
received comments on the proposed guidance. This final issuance 
incorporates changes from the majority of the comments. The NRC staff 
responses to these comments can be found in ADAMS Accession No. 

ADDRESSES: The NRC maintains ADAMS, which provides text and image files 
of NRC's public documents. These documents may be accessed through the 
NRC's Public Electronic Reading Room on the Internet at http://www.nrc.gov/reading-rm/adams.html. Persons who do not have access to 
ADAMS, or who encounter problems in accessing the documents located in 
ADAMS, should contact the NRC Public Document Room reference staff at 
1-800-397-4209, 301-415-4737, or by e-mail at [email protected].

Structural Engineering Branch 2, Division of Engineering, Office of the 
New Reactors, U.S. Nuclear Regulatory Commission, Washington, DC 20555-
0001; telephone at 301-415-0564 or e-mail at [email protected].

[[Page 13611]]

SUPPLEMENTARY INFORMATION: The agency posts its issued staff guidance 
in the agency external Web page (http://www.nrc.gov/reading-rm/doc-collections/isg/).

    Dated at Rockville, Maryland, this 15th day of March 2010.

    For the Nuclear Regulatory Commission.
William F. Burton,
Chief, Rulemaking and Guidance Development Branch, Division of New 
Reactor Licensing, Office of New Reactors.
[FR Doc. 2010-6200 Filed 3-19-10; 8:45 am]