[Federal Register Volume 86, Number 77 (Friday, April 23, 2021)]
[Notices]
[Pages 21772-21773]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-08446]


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NUCLEAR REGULATORY COMMISSION

[NRC-2020-0256]


Plant-Specific, Risk-Informed Decisionmaking for Inservice 
Inspections of Piping

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide; issuance.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing 
Revision 2 to Regulatory Guide (RG) 1.178, ``Plant-Specific, Risk-
Informed Decisionmaking for Inservice Inspection of Piping.'' Revision 
2, incorporates information to be consistent with the terminology and 
defense-in-depth philosophy provided in RG 1.174, ``An Approach for 
Using Probabilistic Risk Assessment in Risk-Informed Decisions on 
Plant-Specific Changes to the Licensing Basis,'' as well as to 
reference the American Society of Mechanical Engineers Code Case N-716-
1, ``Alternative Classification and Examination Requirements, Section 
XI, Division 1.''

DATES: Revision 2 to RG 1.178 is available on April 23, 2021.

ADDRESSES: Please refer to Docket ID NRC-2020-0256 when contacting the 
NRC about the availability of information regarding this document. You 
may obtain publicly available information related to this document 
using any of the following methods:
     Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2020-0256. Address 
questions about Docket IDs in Regulations.gov to Stacy Schumann; 
telephone: 301-415-0624; email: [email protected] . For technical 
questions, contact the individuals listed in the FOR FURTHER 
INFORMATION CONTACT section of this document.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may obtain publicly available documents online in the 
ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/

[[Page 21773]]

adams.html. To begin the search, 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 [email protected].
     Attention: The PDR, where you may examine, and order 
copies of public documents, is currently closed. You may submit your 
request to the PDR via email at [email protected] or call 1-800-397-
4209 or 301-415-4737, between 8:00 a.m. and 4:00 p.m. (EST), Monday 
through Friday, except Federal holidays.
    Revision 2 to RG 1.178 and the regulatory analysis may be found in 
ADAMS under Accession Nos. ML21036A105 and ML20210M044, respectively.
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

FOR FURTHER INFORMATION CONTACT: Zeechung Wang, telephone: 301-415-
1686, email: [email protected], or Harriet Karagiannis, telephone: 
301-415-2493, email: [email protected]. Both are staff of the 
Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory 
Commission, Washington, DC 20555-0001.

SUPPLEMENTARY INFORMATION:

I. Discussion

    The NRC is issuing a revision to an existing guide in the NRC's 
``Regulatory Guide'' series. This series was developed to describe and 
make available to the public information regarding methods that are 
acceptable to the NRC staff for implementing specific parts of the 
agency's regulations, techniques that the NRC staff uses in evaluating 
specific issues or postulated events, and data that the NRC staff needs 
in its review of applications for permits and licenses.
    Revision 2 of RG 1.178 was issued with a temporary identification 
of Draft Regulatory Guide, DG-1288. It addresses new information 
identified since the previous revision of this guide was issued.

II. Additional Information

    The NRC published a notice of the availability of DG-1288 (ADAMS 
Accession No. ML20210M047), in the Federal Register on December 14, 
2020 (85 FR 80825), for a 30-day public comment period. The public 
comment period closed on January 13, 2021. The NRC has not received any 
comments on DG-1288.

III. Congressional Review Act

    This RG is a rule as defined in the Congressional Review Act (5 
U.S.C. 801-808). However, the Office of Management and Budget has not 
found it to be a major rule as defined in the Congressional Review Act.

IV. Backfitting, Forward Fitting, and Issue Finality

    Revision 2 of RG 1.178 describes methods acceptable to the NRC 
staff for complying with the NRC's regulations for inservice 
inspections of piping.
    Issuance of RG 1.178, would not constitute backfitting as defined 
in section 50.109 of title 10 CFR of the Code of Federal Regulations 
(10 CFR), ``Backfitting,'' and as described in NRC Management Directive 
(MD) 8.4, ``Management of Backfitting, Forward Fitting, Issue Finality, 
and Information Requests''; constitute forward fitting as that term is 
defined and described in MD 8.4; or affect the issue finality of any 
approval issued under 10 CFR part 52. As explained in RG 1.178, 
applicants and licensees would not be required to comply with the 
positions set forth in RG 1.178.

    Dated: April 19, 2021.

    For the Nuclear Regulatory Commission.
Meraj Rahimi,
Chief, Regulatory Guidance and Generic Issues Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2021-08446 Filed 4-22-21; 8:45 am]
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