[Federal Register Volume 85, Number 106 (Tuesday, June 2, 2020)]
[Pages 33741-33742]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-11759]




Seismic Qualification of Electrical and Active Mechanical 
Equipment and Functional Qualification of Active Mechanical Equipment 
for Nuclear Power Plants

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide; issuance.


SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing 
Revision 4 to Regulatory Guide (RG) 1.100, ``Seismic Qualification of 
Electrical and Active Mechanical Equipment and Functional Qualification 
of Active Mechanical Equipment for Nuclear Power Plants.'' RG 1.100 was 
revised to endorse industry consensus standards with certain exceptions 
and clarifications. The guide describes methods that the staff of the 
NRC considers acceptable for use in the seismic qualification of 
electrical and active mechanical equipment and the functional 
qualification of active mechanical equipment for nuclear power plants.

DATES: Revision 4 to RG 1.100 is available on June 2, 2020.

ADDRESSES: Please refer to Docket ID NRC-2019-0100 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-2019-0100. Address 
questions about NRC dockets IDs in Regulations.gov to Jennifer Borges; 
telephone: 301-287-9127; 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/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].
    Revision 4 to RG 1.100 and the regulatory analysis may be found in 
NRC's ADAMS under Accession Nos. ML19312C677 and ML18093A676, 
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

FOR FURTHER INFORMATION CONTACT: Ian Tseng, Office of Nuclear Reactor 
Regulation, telephone: 301-415-7964, email: [email protected], and 
Edward O'Donnell, Office of Nuclear Regulatory Research, telephone: 
301-415-3317, email: [email protected]. Both are staff members of 
the U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.


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

[[Page 33742]]

events, and data that the NRC staff needs in its review of applications 
for permits and licenses.
    Revision 4 of RG 1.100 was issued with a temporary identification 
of Draft Regulatory Guide, DG-1328. The guide was revised to endorse, 
with exceptions and clarifications the following industry consensus 
standards: (1) Institute of Electrical and Electronics Engineers (IEEE) 
Standard (Std) 344-2013, ``IEEE Standard for Seismic Qualification of 
Equipment for Nuclear Power Generating Stations,'' (2) IEEE Std C37.98-
2013, ``Standard Qualification Testing of Protective Relays and 
Auxiliaries for Nuclear Facilities,'' and (3) American Society of 
Mechanical Engineers (ASME) QME-1-2017, ``Qualification of Active 
Mechanical Equipment Used in Nuclear Facilities.''

II. Additional Information

    The NRC published a notice of the availability of DG-1328 in the 
Federal Register on February 27, 2019 (84 FR 6444) for a 60-day public 
comment period. The public comment period closed on April 29, 2019. 
Public comments on DG-1328 and the staff responses to the public 
comments are available in ADAMS under Accession No. ML19312C678.

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

    Issuance of this regulatory guide does not constitute backfitting 
as defined in title 10 of the Code of Federal Regulations (10 CFR) 
section 50.109, ``Backfitting,'' and as described in NRC Management 
Directive 8.4, ``Management of Backfitting, Forward Fitting, Issue 
Finality, and Information Requests''; constitute forward fitting as 
that term is defined and described in Management Directive 8.4; or 
affect issue finality of any approval issued under 10 CFR part 52, 
``Licenses, Certificates, and Approvals for Nuclear Power Plants.'' As 
explained in this regulatory guide, applicants and licensees are not 
required to comply with the positions set forth in this regulatory 

    Dated: May 27, 2020.

    For the Nuclear Regulatory Commission.

Harriet Karagiannis,
Acting Chief, Regulatory Guidance and Generic Issues Branch, Division 
of Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2020-11759 Filed 6-1-20; 8:45 am]