ML120400651

Summary of Meeting in San Luis Obispo, CA, with Pacific Gas and Electric; Discuss Digital Replacement of Process Protection System of Reactor Protection System and Engineered Safety Feature Actuation System at Diablo Canyon, Units 1 and 2

ML120400651
Person / Time
Site:	Diablo Canyon
Issue date:	02/21/2012
From:	Joseph Sebrosky Plant Licensing Branch IV
To:	Pacific Gas & Electric Co
Lynch, Steven - NRR/DPR/PRPB, 415-1524
References
TAC ME7522, TAC ME7523
Download: ML120400651 (6)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 21, 2012 LICENSEE: Pacific Gas and Electric Company FACILITY: Diablo Canyon Power Plant, Unit Nos. 1 and 2

SUMMARY

OF JANUARY 18, 2012, MEETING WITH PACIFIC GAS AND ELECTRIC COMPANY ON DIGITAL REPLACEMENT OF THE PROCESS PROTECTION SYSTEM PORTION OF THE REACTOR TRIP SYSTEM AND ENGINEERED SAFETY FEATURES ACTUATION SYSTEM AT DIABLO CANYON POWER PLANT (TAC NOS. ME7522 AND ME7523)

On January 18, 2012, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Pacific Gas and Electric Company (PG&E, the licensee) at the Embassy Suites Hotel, 333 Madonna Road, San Luis Obispo, California 93405. The purpose of the meeting was to discuss the license amendment request (LAR) submitted by PG&E on October 26, 2011, for the Digital Replacement of the Process Protection System (PPS) Portion of the Reactor Trip System and Engineered Safety Features Actuation System at Diablo Canyon Power Plant, Unit Nos. 1 and 2 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML113070457). A list of attendees is provided in Enclosure 1.

The NRC staff discussed the results of its acceptance review of PG&E's LAR contained in a letter dated January 13, 2012 (ADAMS Accession No. ML120120005). This discussion consisted of an explanation of the acceptance review process and the regulatory requirements of Title 10 of the Code of Federal Regulations for LARs. Additionally, the staff addressed several items that may present challenges to the performance of a detailed technical evaluation of the proposed PPS replacement system. These open items are discussed in detail in the acceptance review letter mentioned above. The licensee was given an opportunity to address each of the open items following the NRC presentation. The NRC staff requested that PG&E submit written responses to these open review items within 60 days of the date of the acceptance review letter to facilitate a timely review of the amendment request.

The NRC staff further discussed its review plan for the amendment request and associated milestones to illustrate anticipated interactions between the NRC staff and the licensee and its contractors. The NRC review plan is provided in Enclosure 2. The technical review of the LAR is expected to take approximately 18 months and be completed in late 2013. The NRC staff plans to conduct two audits with a third audit likely during the review process. The staff also anticipates presenting the safety bases for approving the LAR to the AdviSOry Committee on Reactor Safeguards and may request licensee support.

Finally, the NRC staff addressed the status and review plan for the issuance of safety evaluations for the Invensys Operations Management Tricon Programmable Logic Controller (PLC), Version 10 (Tricon V10), and the CS Innovations, LLC Advanced Logic System (ALS).

-2 The licensee presented information (ADAMS Accession No. ML120250057) on the status of the ALS and Tricon V10 platform development and factory acceptance testing as well as observations and comments on the effectiveness of Digital Instrumentation and Controls Interim 1

Staff Guidance DI&C-ISG-06

• Members of the public were in attendance. A Public Meeting Feedback form was received and expressed appreciation for the time taken by the NRC to explain the discussion topics in such a way as to allow understanding of the material by the general public. This comment has been forwarded to the NRR Senior Communications Analyst who will forward them to the Office of the Executive Director for Operations.

ph M. Sebrosky, Senior Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosures:

1. List of Attendees

2. Review Plan cc w/encls: Distribution via Listserv U.S. Nuclear Regulatory Commission, Digital Instrumentation and Controls, Dt&C-ISG-06, "Task Working Group #6: Licensing Process, Interim Staff Guidance, Revision 1," dated January 19, 2011 (ADAMS Accession No. ML110140103).

LIST OF ATTENDEES JANUARY 18,2012, MEETING WITH PACIFIC GAS AND ELECTRIC COMPANY REGARDING DIABLO CANYON POWER PLANT DIGITAL UPGRADE NAME ORGANIZATION Sherry Lewis Mothers for Peace Jane Swanson Mothers for Peace Liz Apfelberg Mothers for Peace Ken Schrader Pacific Gas and Electric Jeff Bonner Pacific Gas and Electric Dave Van Mouwerik Pacific Gas and Electric Bob Lint Altran John Hefler Altran Bill Petrick Altran Edward Quinn Altran Steve Seaman Westinghouse Warren Odess-Gillett Westinghouse Roman Shaffer Invensys Ken Thompson Avila Valley Advisory Council Gene Nelson, Ph,D Biometrics Steve Lynch U,S, Nuclear Regulatory Commission Bill Kemper U,S, Nuclear Regulatory Commission Rich Stattel U,S, Nuclear Regulatory Commission Enclosure 1

Project Plan for Diablo Canyon Replacement of Digital RPS and ESFAS (PPS) - LAR Review (DRAFT)

Planned Actual Step Date Task Date 1 Oct. 26, PG&E LAR Submittal for NRC approval. Submittal includes all Oct. 26, 2011 Phase 1 documents needed to be docketed prior to 2011 acceptance for review per ISG-06, "Digital Licensing."

2 Jan. 12, Acceptance Review complete. LAR accepted for detailed Jan. 12, 2012 technical review. Several issues identified that could present 2012 challenges for the staff to complete its review. Scheduled public meeting with PG&E to discuss the results of the acceptance review.

3 TBD Acceptance letter sent to licensee.

4 Jan. 18, Conduct Public Meeting to discuss staffs findings during the Jan. 18, 2012 LAR acceptance review. Staff proceeds with LAR technical 2012 review.

S March 18, PG&E provides information requested in acceptance letter.

2012 Initiate bi-weekly telecoms with PG&E and its contractors to discuss potential RAI issues. Open Items spreadsheet will be maintained by NRC to document staff issues and planned licensee responses.

6 May 30, PG&E provides partial set of Phase 2 documentation per 2012 commitments made in LAR 7 July 2012 First RAI sent to PG&E on Phase 1 documentation ( e.g.,

specifications, plans, and equipment qualification). Continue review of the application.

8 TBD SERs for Tricon V10 and Westinghouse ALS Platforms issued final. Both platforms become Tier 1 reviews of the LAR 9 September Audit trip to Invensys facility for thread audit; audit the life 2012 cycle planning documents and outputs, with particular emphases on verification and validation, configuration management, quality assurance, software safety, the Invensys application software development procedures, and application software program design.

10 September Receive answers to first RAI.

2012 11 ~ctober Audit report provided to PG&E and its contractor.

2012 Enclosure 2

-2 Planned Actual Step Date Task Date 12 November Second RAI to PG&E on Phase 2 documentation (e.g., FEMA, 2012 safety analysis, RTM, EQ Tests results, setpoint calcs, SW Tool analysis reports, and any incomplete or un-satisfactory response to first RAI. Continue review - hardware and program design and V&V activities 13 December PG&E provides remaining set of Phase 2 documentation per 2012 commitments made in LAR.

14 January Receive answers to second RAI.

2013 Continue review - V&V program, security requirements (RG 1.152, Rev. 2).

15 January Audit trip to Invensys facility for additional thread audit items; 2013 audit hardware and software installation plans, configuration management reports, detailed system and hardware design, completed test procedures, V&V activities, summary test results (including FAT) and incident reports, and application code listings.

February Audit report provided to PG&E and its contractor.

2013 17 June 2013 Presentation to ACRS Subcommittee/Full ACRS Committee on DCPP PPS LAR Safety Evaluation.

18 June 2013 Complete draft technical SER for management review and approval.

19 July 2, Issue completed draft technical SER to DORL.

2013 20 July 2013 Draft SER sent it to PG&E, Invensys, and W/CSI to perform technical review and ensure no proprietary information was included.

21 August Receive comments from PG&E and its contractors on draft 2013 SER proprietary review.

22 -Oct. 2013 Approved License Amendment issued to PG&E.

23 -Dec. Inspection trip to DCPP for PPS SAT and installation test, 2013 training and other preparation for new system. To be coordinated with regional visit. Date based on February 2014 Unit 1 Refueling Outage (1R18) of February 2014.

ML120250057) on the status of the ALS and Tricon V1 0 platform development and factory acceptance testing as well as observations and comments on the effectiveness of Digital Instrumentation and Controls Interim Staff Guidance DI&C-ISG-06 1.

Members of the public were in attendance. A Public Meeting Feedback form was received and expressed appreciation for the time taken by the NRC to explain the discussion topics in such a way as to allow understanding of the material by the general public. This comment has been forwarded to the NRR Senior Communications Analyst who will forward them to the Office of the Executive Director for Operations.

Please direct any inquiries to me at 301-415-1132 or at Joseph.Sebrosky@nrc.gov.

IRA!

Joseph M. Sebrosky, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosures:

1. List of Attendees

2. Review Plan cc w/encls: Distribution via Listserv U.S. Nuclear Regulatory Commission, Digital Instrumentation and Controls, DI&C-ISG-06, "Task Working Group #6: Licensing Process, Interim Staff Guidance, Revision 1," dated January 19, 2011 (ADAMS Accession No. ML110140103).

DISTRIBUTION:

PUBLIC RidsOgcRp Resource LPLIV Reading RidsRgn4MailCenter Resource RidsAcrsAcnw_MailCTR Resource WMaier, RIV RidsNrrDeEicb Resource CSteger, NRR RidsNrrDorl Resource WKemper, NRR/DElEICB RidsNrrDorlLpl4 Resource RStattel, NRR/DElEICB RidsNrrLAJBurkhardt Resource SLynch, NRR RidsNrrPM DiabloCanyon Resource LChang, EDO RIV ADAMS Accession Nos. Meeting Notice ML120130135; Meeting Summary ML120400651; Licensee Handout ML120250057 *via email OFFICE DORULPL4/PMIT DORULPL4IPM DORULPL4/LA DE/EICBlBC DORULPL4IBC DORULPL4/PM NAME SLynch JSebrosky JBurkhardt WKemper* MMarkley JSebrosky DATE 2/12/12 2121112 2/16/12 2/21/12 2/21/12 2/21/12