DCL-17-092, Readiness for Additional Supplemental Inspection

Readiness for Additional Supplemental Inspection

ML17313A518
Person / Time
Site:	Diablo Canyon
Issue date:	11/09/2017
From:	Welsch J Pacific Gas & Electric Co
To:	Mark Haire Document Control Desk, Office of Nuclear Reactor Regulation, NRC Region 4
References
DCL-17-092, IR 2016006, IR 2016010, IR 2017008 EA-16-168
Download: ML17313A518 (2)

Text

Pacific Gas .and Electric Company*

James M_ Welsch Diablo Canyon Power Plant Vice President P.O. Box 56 Nuclear Generation and Avila Beach, CA 93424 Chief Nuclear Officer 805.545.3242 E-Mail: JMWl@pge.com November 9, 2017 PG&E Letter DCL-17-092 Mark S. Haire, Chief, Reactor Projects Branch A EA-16-168 U.S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Readiness for Additional Supplemental Inspection

References:

1. NRC Letter, "Diablo Canyon Power Plant - Final Significance Determination of a White Finding, Notice of Violation, and Follow-Up Assessment Letter; NRC Inspection Report 0500027 5/201601 0 and 05000323/201601 0," dated December 28, 2016

2. NRC Letter, "Annual Assessment Letter for Diablo Canyon Power Plant, Units _

1 and 2 (Report 05000275/2016006 and 05000323/2016006)," dated March 1, 2017

3. NRC Letter, "Diablo Canyon Power Plant- NRC Supplemental Inspection Report and Assessment Follow-Up Letter; 05000275/2017008 and 05000323/2017008," dated September 27, 2017

Dear Mr. Haire:

In the NRC final significance determination letter (Reference 1), the NRC staff notified Pacific Gas and Electric Company (PG&E) of a greater-than-green finding and notice of violation at the Diablo Canyon Power Plant (DCPP). In the Annual Assessment Letter (Reference 2), the NRC indicated that the greater-than-green finding and related performance assessment would require a supplemental inspection. The supplemental inspection was conducted during June 12-15, 2017.

The NRC issued Inspection Report (IR) 2017008 (Reference 3), to document the results of the supplemental inspection. The IR identified areas within the DCPP root cause evaluations that were insufficient to address NRC Inspection Procedure A member of the STARS Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek

Mark S. Haire PG&E Letter DCL-17-092 Chief, Reactor Projects Branch A November 9, 2017 Page 2 95001 requirements. The report further stated that an additional supplemental inspection would be required when PG&E indicates readiness for it.

This letter is to inform you that PG&E has completed additional evaluations consistent with Inspection Procedure 95001 requirements, and is now ready for the additional supplemental inspection.

PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.

If you have questions regarding this letter, please contact Mr. Hossein Hamzehee, Manager of Regulatory Services, at 805-545-4720.

Sincerely, d=:~

Vice President, Nuclear Generation and Chief Nuclear Officer mem6/4539/50936644 cc: Kriss M. Kennedy, Region IV Administrator Christopher W. Newport, NRC Senior Resident Inspector

. Balwant K. Singal, NRC Senior Project Manager NRC Document Control Desk Diablo Distribution A member of the STARS Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek