[Federal Register Volume 77, Number 142 (Tuesday, July 24, 2012)]
[Notices]
[Pages 43405-43406]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-18018]


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NUCLEAR REGULATORY COMMISSION

[NRC-2010-0138]


Final Standard Review Plan, Branch Technical Position 7-19 on 
Guidance for Evaluation of Diversity and Defense-in-Depth in Digital 
Computer-Based Instrumentation and Control Systems

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of availability.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC or the Commission) 
staff is issuing Final Revision 6 to NUREG-0800, ``Standard Review Plan 
for the Review of Safety Analysis Reports for Nuclear Power Plants,'' 
Branch Technical Position (BTP) 7-19 on ``Guidance for Evaluation of 
Diversity and Defense-in-Depth in Digital Computer-Based 
Instrumentation and Control Systems.'' This BTP is to be cited as the 
acceptance criteria for Diversity and Defense-in-Depth in Digital 
Computer-Based Instrumentation and Control Systems in the Standard 
Review Plan (SRP), Chapter 7, for those standard reactor designs that 
have not been certified prior to the date of this BTP. The purpose of 
this SRP update is to provide staff guidance for assessing combined 
license (COL) applicant compliance with the requirements.

DATES: The effective date of this SRP update is August 23, 2012.

ADDRESSES: Please refer to Docket ID NRC-2010-0138 when contacting the 
NRC about the availability of information regarding this document. You 
may access information related to this document, which the NRC 
possesses and are publicly available by any of the following methods:
     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2010-0138. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-492-
3668; email: Carol.Gallagher@nrc.gov.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may access publicly-available documents online in the NRC 
Library at http://www.nrc.gov/reading-rm/adams.html. To begin the 
search, select ``ADAMS Public Documents'' and then select ``Begin Web-
based ADAMS Search.'' For problems with ADAMS, please contact the NRC's 
Public Document Room (PDR) reference staff at 1-800-397-4209, 301-415-
4737, or by email to pdr.resource@nrc.gov. The ADAMS accession number 
for each document referenced in this notice (if that document is 
available in ADAMS) is provided the first time that a document is 
referenced. The Final Revision 6 to NUREG-0800, ``Standard Review Plan 
for the Review of Safety Analysis Reports for Nuclear Power Plants,'' 
Branch Technical Position (BTP) 7-19 on ``Guidance for Evaluation of 
Diversity and Defense-in-Depth in Digital Computer-Based 
Instrumentation and Control Systems'' (Package) (ADAMS Accession No. 
ML110550767), Final Revision 6 to NUREG-0800, ``Standard Review Plan 
for the Review of Safety Analysis Reports for Nuclear Power Plants,'' 
Branch Technical Position (BTP) 7-19 on ``Guidance for Evaluation of 
Diversity and Defense-in-Depth in Digital Computer-Based 
Instrumentation and Control Systems,'' (ADAMS Accession No. 
ML110550791), and Comment Response Document for BTP 7-19, (ADAMS 
Accession No. ML120830075).
     NRC's PDR: You may examine and purchase copies of public 
documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555 
Rockville Pike, Rockville, Maryland 20852.
     The NRC posts its issued staff guidance on the NRC's 
external Web page (http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr0800/).

[[Page 43406]]


FOR FURTHER INFORMATION CONTACT: Mr. Ian C. Jung, Chief, 
Instrumentation, Controls and Electrical Engineering Branch 2, Division 
of Engineering, Office of New Reactors, U.S. Nuclear Regulatory 
Commission, Washington, DC 20555-0001; telephone: 301-415-2969 or email 
at Ian.Jung@nrc.gov.

SUPPLEMENTARY INFORMATION: The NRC staff issues SRPs and BTPs to 
facilitate timely implementation of current staff guidance and to 
facilitate activities associated with the review of applications for 
design certifications and combined licenses by the Office of New 
Reactors. Additionally, the SRPs and BTPs are used by the Office of 
Nuclear Reactor Regulation staff in the review of applications for 
license amendments in currently operating nuclear power plants. The NRC 
staff will also incorporate the revised SRP section and BTP 7-19 into 
the next revision of Regulatory Guide 1.206 and any related guidance 
documents.
    On March 19, 2010, the NRC staff issued the proposed Revision 6 of 
NUREG-0800, ``Standard Review Plan for the Review of Safety Analysis 
Reports for Nuclear Power Plants: LWR Edition,'' BTP 7-19 on ``Guidance 
for Evaluation of Diversity and Defense-in-Depth in Digital Computer-
Based Instrumentation and Control Systems'' (ADAMS Accession No. 
ML093490771). The NRC staff considered comments received on the 
proposed revision to BTP 7-19 as well as recommendations from the ACRS, 
and incorporated the changes suggested in the comments in this final 
issuance. The NRC staff responses to these comments can be found under 
ADAMS Accession No. ML120830075.
    Backfitting: This SRP update does not constitute backfitting as 
defined in Title 10 of the Code of Federal Regulations (10 CFR) 50.109, 
nor is it inconsistent with any of the issue finality provisions in 10 
CFR Part 52. This SRP does not contain any new requirements for COL 
applicants or holders under Part 52, or for licensees of existing 
operating units licensed under part 50. Rather, it contains additional 
guidance and clarification on compliance with 10 CFR 52.79(a)(31), 
which may be used by COL applicants in the preparation of their 
applications.
    Congressional Review Act: This SRP update is a rule as designated 
in the Congressional Review Act (5 U.S.C. 801-808). However, OMB has 
not found it to be a major rule as designated in the Congressional 
Review Act.

    Dated at Rockville, Maryland, this 16th day of July 2012.
    For the Nuclear Regulatory Commission.
Amy E. Cubbage,
Chief, Policy Branch, Division of Advanced Reactors and Rulemaking, 
Office of New Reactors.
[FR Doc. 2012-18018 Filed 7-23-12; 8:45 am]
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