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[Federal Register Volume 89, Number 238 (Wednesday, December 11, 2024)]
[Notices]
[Pages 99914-99915]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-29066]

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NUCLEAR REGULATORY COMMISSION

[Docket Nos. 50-275 and 50-323; NRC-2024-0148]

Pacific Gas & Electric Company; Diablo Canyon Nuclear Power 
Plant, Units 1 and 2; Petition

AGENCY: Nuclear Regulatory Commission.

ACTION: 10 CFR 2.206 request; supplement.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is giving notice 
that by petition dated March 4, 2024, as supplemented on June 7, 2024, 
and October 30, 2024, San Luis Obispo Mothers for Peace, Friends of the 
Earth, and Environmental Working Group (the petitioners) requested that 
the NRC exercise its supervisory authority to order the immediate 
closure of Diablo Canyon Nuclear Power Plant, Units 1 and 2 (Diablo 
Canyon) due to ``the unacceptable risk of a seismically induced severe 
accident.'' The Commission referred the request to the enforcement 
petition process under NRC regulations. Details regarding NRC review of 
the petitioners' October 30, 2024, supplement is included in the 
Supplementary Information section of this document.

DATES: December 10, 2024.

ADDRESSES: Please refer to Docket ID NRC-2024-0148 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-2024-0148. Address 
questions about Docket IDs in Regulations.gov to Stacy Schumann; 
telephone: 301-415-0624; email: [email protected]. For technical 
questions, contact the individual 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, at 301-415-4737, 
or by email to [email protected]. For the convenience of the reader, 
instructions about obtaining materials referenced in this document are 
provided in the ``Availability of Documents'' section of this document.
     NRC's PDR: The PDR, where you may examine and order copies 
of publicly available documents, is open by appointment. To make an 
appointment to visit the PDR, please send an email to 
[email protected] or call 1-800-397-4209 or 301-415-4737, between 8 
a.m. and 4 p.m. eastern time (ET), Monday through Friday, except 
Federal holidays.

FOR FURTHER INFORMATION CONTACT: Perry Buckberg, Office of Nuclear 
Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington DC 
20555-0001; telephone: 301-415-1383; email: [email protected].

I. Supplementary Information

    On March 4, 2024, the petitioners filed a petition requesting that 
the NRC exercise its supervisory authority to order the immediate 
closure of Diablo Canyon due to ``the unacceptable risk of a 
seismically induced severe accident.'' An order was issued on March 12, 
2024, referring the request to the enforcement petition process under 
section 2.206 of title 10 of the Code of Federal Regulations (10 CFR), 
``Requests for action under this subpart.''
    On August 27, 2024, the NRC staff issued an Acknowledgement Letter 
that summarized the evaluation activities of the March 4, 2024, 
petition, as supplemented on June 7, 2024, and described that the 
Petition Review Board (PRB) had accepted four specific concerns for 
further review.
    Consistent with Section IV.B ``Schedule,'' of the handbook for NRC 
Management Directive (MD) 8.11, ``Review Process for 10 CFR 2.206 
Petitions,'' and its associated Directive Handbook 8.11, the PRB 
intended to issue the proposed director's decision for comment within 
120 days after issuing the August 27, 2024, acknowledgment letter. On 
October 24, 2024, Pacific Gas & Electric Company (PG&E) provided a 
voluntarily submittal to the NRC related to the PRB review of the 
petition. On October 31, 2024, the petitioners submitted a supplement 
to the petition. The PRB has considered information in the new 
supplement and intends to address the following supplemental concerns 
in the proposed director's decision:
    1. PG&E's 2015 and 2024 seismic source characterizations omitted 
modern deformation modeling and failed to use globally-calibrated 
strainrate-to-seismicity conversions, that would have prevented their 
serious underestimates.
    2. Additional justification supporting the use of the Noto 
Peninsula earthquake as a model characteristic thrust earthquake for 
the Irish Hills.
    Consistent with Section III.I.6, ``Supplements to the Petition,'' 
of the handbook for MD 8.11, the PRB now intends to issue the proposed 
director's decision for comment within 120 days of the issuance of the 
supplemental acknowledgement letter.

[[Page 99915]]

II. Availability of Documents

    The documents identified in the following table are available to 
interested persons through ADAMS, as indicated.

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                    Document description                                     ADAMS accession No.
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Petition submitted by San Luis Obispo Mothers for Peace,     ML24067A066.
 Friends of the Earth, and Environmental Working Group,
 dated March 4, 2024.
NRC SECY Order referring the petition to the 10 CFR 2.206    ML24072A529.
 process, dated March 12, 2024.
Petition Supplement, dated June 7, 2024....................  ML24162A079.
NRC Management Directive 8.11, ``Review Process for 10 CFR   ML18296A043.
 2.206 Petitions,'' dated March 1, 2019.
NRC Acknowledgement Letter dated August 27, 2024...........  ML24205A066.
PG&E voluntarily submittal dated October 24, 2024..........  ML24298A234.
Petition Supplement, dated October 30, 2024................  ML24305A187.
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    Dated: December 5, 2024.
    For the Nuclear Regulatory Commission.
Michael X. Franovich,
Acting Deputy Director, Office of Nuclear Reactor Regulation.
[FR Doc. 2024-29066 Filed 12-10-24; 8:45 am]
BILLING CODE 7590-01-P
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