ML18082A055

Letter - Withdrawal of an Amendment Request to Adopt TSTF-505, Revision 1, Provide Risk-Informed Extended Completion Times -RITSTF Initiative 4b (CAC Nos. MF3240 and MF3241; EPID L-2013-LLA-0001)

ML18082A055
Person / Time
Site:	Diablo Canyon
Issue date:	03/29/2018
From:	Balwant Singal Plant Licensing Branch IV
To:	Welsch J Pacific Gas & Electric Co
Singal B, 301-415-3016
References
CAC MF3240, CAC MF3241, EPID L-2013-LLA-0001
Download: ML18082A055 (8)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 29, 2018 Mr. James M. Welsch Vice President, Nuclear Generation and Chief Nuclear Officer Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 56, Mail Code 104/6 Avila Beach, CA 93424

SUBJECT:

DIABLO CANYON POWER PLANT, UNITS 1 AND 2 - WITHDRAWAL OF AN AMENDMENT REQUEST (CAC NOS. MF3240 AND MF3241; EPID L-2013-LLA-0001)

Dear Mr. Welsch:

By letter dated November 25, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13330A557), as supplemented by letters dated February 5 and May 28, 2015, and July 7 and October 27, 2016 (ADAMS Accession Nos. ML15036A592, ML15148A480, ML16189A282, and ML16301A425, respectively), Pacific Gas and Electric Company (PG&E, the licensee) submitted a license amendment request for the Diablo Canyon Power Plant, Units 1 and 2, Facility Operating License Nos. DPR-80 and DPR-82, respectively.

The proposed changes would have modified the DCPP technical specifications (TSs) to permit the use of Risk-Informed Completion Times (RICTs) in accordance with Technical Specifications Task Force (TSTF) traveler TSTF-505, Revision 1, "Provide Risk-Informed Extended Completion Times - RITSTF [Risk-Informed TSTF] Initiative 4b," (ADAMS Accession No. ML111650552). The proposed amendments would have, in part, modified selected Required Actions to permit excluding the Completion Times in accordance with a new TS-required RICT program.

Subsequently, by letter dated March 7, 2018 (ADAMS Accession No. ML18066A938), PG&E withdrew the amendment request. The U.S. Nuclear Regulatory Commission (NRC) acknowledges this request to withdraw the application. NRC staff activities for the review of this amendment request have ceased and the associated Enterprise Project Identifier (EPID) number has been closed.

If you choose to resubmit this amendment request, the NRC staff would recommend the licensee address the following:

• Ensure that core damage frequency and large early release frequency are below the acceptance criteria in Regulatory Guide 1.174, Revision 3, "An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis" (ADAMS Accession No. ML17317A256);

• All necessary peer reviews have been completed and Facts and Observations resolved, as appropriate;

J. Welsch

• Any TS loss of function conditions meet design basis analysis requirements for parameters; and

• Ensure that a RICT is not proposed for actions not listed in TSTF-505, Revision 1.

The NRC has filed the enclosed Notice of Withdrawal of Application for Amendment to Facility Operating License with the Office of the Federal Register for publication.

Sincerely,

~ ~* ~ cf-ey Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosure:

Notice of Withdrawal cc: Listserv

ENCLOSURE FEDERAL REGISTER NOTICE

[7590-01-P]

NUCLEAR REGULATORY COMMISSION

[Docket Nos. 50-275 and 50-323; NRC-2014-0260]

Pacific Gas and Electric Company; Diablo Canyon Power Plant, Units 1 and 2 AGENCY: Nuclear Regulatory Commission.

ACTION: License amendment application; withdrawal by applicant.

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) has granted the request of Pacific Gas and Electric Company to withdraw its application dated November 25, 2013, as supplemented by letters dated February 5 and May 28, 2015, and July 7 and October 27, 2016, for proposed amendments to Facility Operating License Nos. DPR-80 and DPR-82. The proposed amendments would have modified the facility technical specifications (TSs) to permit the use of Risk-Informed Completion Times (RICTs) in accordance with Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 1, "Provide Risk-Informed Extended Completion Times - RITSTF [Risk-Informed TSTF] Initiative 4b."

DATES: [INSERT DATE OF PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: Please refer to Docket ID NRC-2014-0260 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:

2

• Federal Rulemaking Web Site: Go to http://www.regulations.gov and search for Docket ID NRC-2014-0260. Address questions about NRC dockets to Jennifer Borges; telephone: 301-287-9127; e-mail: Jennifer.Borges@nrc.gov. 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 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 e-mail to pdr.resource@nrc.gov.

The ADAMS accession number for each document referenced (if it is available in ADAMS) is provided the first time that it is mentioned in this document.

• NRC's PDR: You may examine and purchase copies of public documents at the NRC's PDR, Room 01-F21, One White Flint North, 11555 Rockville Pike, Rockville, Maryland 20852.

FOR FURTHER INFORMATION CONTACT: Balwant K. Singal, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington DC 20555-0001; telephone: 301-415-3016, e-mail: Balwant.Singal@nrc.gov.

3 SUPPLEMENTARY INFORMATION:

The NRC has granted the request of Pacific Gas and Electric Company (the licensee) to withdraw its November 25, 2013, application (ADAMS Accession No. ML13330A557) for proposed amendments to Facility Operating License Nos. DPR-80 and DPR-82 for the Diablo Canyon Power Plant, Units 1 and 2, located in San Luis Obispo County, California.

The proposed amendments would have modified the Diablo Canyon Power Plant TSs to permit the use of RICTs in accordance with TSTF-505, Revision 1 (ADAMS Accession No. ML111650552). The proposed amendments would have, in part, modified selected required actions to permit excluding the completion times in accordance with a new TS-required RICT program.

4 The Commission has previously issued a proposed finding that the amendments involve no significant hazards consideration, published in the Federal Register on December 9, 2014 (79 FR 73111 ). The licensee provided supplemental information by letters dated February 5 and May 28, 2015, and July 7 and October 27, 2016 (ADAMS Accession Nos. ML15036A592, ML15148A480, ML16189A282, and ML16301A425, respectively). However, the licensee requested to withdraw the application on March 7, 2018 (ADAMS Accession No. ML18066A938).

Dated at Rockville, Maryland, this 29th day of March, 2018.

For the Nuclear Regulatory Commission.

IRA/

Siva P. Lingam, Project Manager, Plant Licensing Branch IV, Division of Operating Reactor Licensing, Office of Nuclear Reactor Regulation.

J. Welsch

SUBJECT:

DIABLO CANYON POWER PLANT, UNITS 1 AND 2-WITHDRAWAL OF AN AMENDMENT REQUEST (CAC NOS. MF3240 AND MF3241; EPID L-2013-LLA-0001) DATED MARCH 29, 2018 DISTRIBUTION:

PUBLIC PM File Copy RidsACRS_MailCTR Resource RidsNrrDorlLpl4 Resource RidsNrrLAPBlechman Resource RidsNrrPMDiabloCanyon Resource RidsRgn4MailCenter Resource RidsNrrDraApla Resource ADAMS Accession Nos.: L TR (NRR-106) ML18082A055 FRN (ADM-012) ML18082A025 OFFICE NRR/DORL/LPL4/PM NRR/DORL/LPL4/LA NRR/DRA/APLA/BC NAME BSingal (Slingam for) PBlechman $Rosenberg DATE 03/27/18 03/27/18 03/27/18 OFFICE NRR/DORL/LPL4/BC NRR/DORL/LPL4/PM NAME BPascarelli BSingal (Slingam for)

DATE 03/28/18 03/29/18 OFFICIAL AGENCY RECORD