ML15189A338
| ML15189A338 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 07/20/2015 |
| From: | Japan Lessons-Learned Division |
| To: | Halpin E Pacific Gas & Electric Co |
| Brown M, NRR/JLD, 415-1924 | |
| References | |
| EA-12-049, EA-12-051, TAC MF0958, TAC MF0959, TAC MF0963, TAC MF0964 | |
| Download: ML15189A338 (10) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 July 20, 2015 Mr. Edward D. Halpin Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56 Mail Code 104/6 Avila Beach, CA 93424
SUBJECT:
DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 - PLAN FOR THE ONSITE AUDIT REGARDING IMPLEMENTATION OF MITIGATING STRATEGIES AND RELIABLE SPENT FUEL INSTRUMENTATION RELATED TO ORDERS EA-12-049 AND EA-12-051 (TAC NOS. MF0958, MF0959, MF0963, AND MF0964)
Dear Mr. Halpin:
On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Order EA-12-049, "Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events" and Order EA-12-051, "Order to Modify Licenses With Regard To Reliable Spent Fuel Pool Instrumentation," (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML12054A736 and ML12054A679, respectively). The orders require holders of operating reactor licenses and construction permits issued under Title 10 of the Code of Federal Regulations Part 50 to submit for review, Overall Integrated Plans (OIPs) including descriptions of how compliance with the requirements of of each order will be achieved.
By letter dated February 27, 2013 (ADAMS Accession No. ML'13059A501 ), Pacific Gas and Electric Company (PG&E, the licensee) submitted its OIP for Diablo Canyon Power Plant, Unit Nos. 1 and 2 (DCPP) in response to Order EA-12-049. By letters dated August 22, 2013, February 26, 2014, August 21, 2014, and February 23, 2015 (ADAMS Accession Nos.
ML13235A097, ML14058A221, ML14233A636, and ML15054A628, respectively), PG&E submitted its first four six-month updates to the OIP. By letter dated August 28, 2013 (ADAMS Accession No. ML13234A503), the NRC notified all licensees and construction permit holders that the staff is conducting audits of their responses to Order EA-12-049 in accordance with NRC Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-111, "Regulatory Audits" (ADAMS Accession No. ML082900195). This audit process led to the issuance of the DCPP interim staff evaluation (ISE) on February 3, 2014 (ADAMS Accession No. ML13364A192). and continues with in-office and onsite portions of this audit.
By letter dated February 27, 2013 (ADAMS Accession No. ML'13059A500), the licensee submitted its OIP for DCPP in response to Order EA-12-051. By letter dated July 3, 2013 (ADAMS Accession No. ML13178A364), the NRC staff sent a r~quest for additional information (RAI) to the licensee. By letters dated July 18, 2013, August 22. 2013, February 26, 2014, August 21, 2014, and February 23, 2015 (ADAMS Accession Nos. ML13200A123,
E. Halpin ML13235A103, ML14058A222, ML14233A637, and ML15054A642, respectively), the licensee submitted its RAI responses and first four six-month updates to the OIP.
The NRC staff's review led to the issuance of the DCPP ISE and RAI dated November 25, 2013 (ADAMS Accession No. ML13311B362). By letter dated March 26, 2014 (ADAMS Accession No. ML14083A620), the NRC notified all licensees and construction permit holders that the staff is conducting in-office and onsite audits of their responses to Order EA-12-051 in accordance with NRC NRR Office Instruction LIC-111, as discussed above.
The ongoing audit process, to include the in-office and onsite portions, allows the staff to assess whether it has enough information to make a safety evaluation of the Integrated Plans. The audit allows the staff to review open and confirmatory items from the mitigation strategies ISE, RAI responses from the spent fuel pool instrumentation ISE, the licensee's integrated plans, and other audit questions. Additionally, the staff gains a better understanding of submitted information, identifies additional information necessary for the licensee to supplement its plan, and identifies any staff potential concerns. The audit's onsite portion will occur prior to declarations of compliance for the first unit at each site.
This document outlines the onsite audit process that occurs after ISE issuance as licensees provide new or updated information via periodic updates, update audit information on e-portals, provide preliminary Overall Program Documents/Final Integrated Plans, and continue in-office audit communications with staff while proceeding towards compliance with the orders.
The staff plans to conduct an onsite audit at DCPP in accordance with the enclosed audit plan from August 17-21, 2015.
If you have any questions, please contact me at 301-415-1924 or by e-mail at Tony.Brown@nrc.gov.
Sincerely, T~,~ger Orders Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Docket Nos.: 50-275 and 50-323
Enclosure:
Audit plan cc w/encl: Distribution via Listserv
Audit Plan Diablo Canyon Power Plant, Unit Nos. 1 and 2 BACKGROUND AND AUDIT BASIS On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Order EA-12-049, "Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events" and Order EA-12-051, "Order to Modify Licenses With Regard To Reliable Spent Fuel Pool Instrumentation," (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML12054A736 and ML12054A679, respectively). Order EA-12-049 directs licensees to develop, implement, and maintain guidance and strategies to maintain or restore core cooling, containment, and spent fuel pool (SFP) cooling capabilities in the event of a beyond-design-basis external event (BDBEE). Order EA-12-051 requires, in part, that all operating reactor sites have a reliable means of remotely monitoring wide-range SFP levels to support effective prioritization of event mitigation and recovery actions in the event of a BDBEE. The orders require holders of operating reactor licenses and construction permits issued under Title 10 of the Code of Federal Regulations (10 CFR) Part 50 to submit for review their Overall Integrated Plans (OIPs) including descriptions of how compliance with the requirements of Attachment 2 of each order will be achieved.
By letter dated February 27, 2013 (ADAMS Accession No. ML13059A501 ), Pacific Gas and Electric Company (PG&E, the licensee) submitted its OIP for Diablo Canyon Power Plant, Unit Nos. 1 and 2 (DCPP) in response to Order EA-12-049. By letters dated August 22, 2013, February 26, 2014, August 21, 2014, and February 23, 2015 (ADAMS Accession Nos.
ML13235A097, ML14058A221, ML14233A636, and ML15054A628, respectively), PG&E submitted its first four six-month updates to the OIP. By letter dated August 28, 2013 (ADAMS Accession No. ML13234A503), the NRC notified all licensees and construction permit holders that the staff is conducting audits of their responses to Order EA-12-049 in accordance with NRC Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-111, "Regulatory Audits" (ADAMS Accession No. ML082900195). This audit process led to the issuance of the DCPP interim staff evaluation (ISE) on February 3, 2014 (ADAMS Accession No. ML13364A192), and continues with in-office and onsite portions of this audit.
By letter dated February 27, 2013 (ADAMS Accession No. ML13059A500), the licensee submitted its OIP for DCPP in response to Order EA-12-051. By letter dated July 3, 2013 (ADAMS Accession No. ML13178A364), the NRC staff sent a request for additional information (RAI) to the licensee. By letters dated July 18, 2013, August 22, 2013, February 26, 2014, August 21, 2014, and February 23, 2015 (ADAMS Accession Nos. ML13200A123, ML13235A103, ML14058A222, ML14233A637, and ML15054A642, respectively), the licensee submitted its RAI responses and first four six-month updates to the OIP.
The NRC staff's review led to the issuance of the DCPP ISE and RAI dated November 25, 2013 (ADAMS Accession No. ML13311B362). By letter dated March 26, 2014 (ADAMS Accession No. ML14083A620), the NRC notified all licensees and construction permit holders that the staff Enclosure
is conducting in-office and onsite audits of their responses to Order EA-12-051 in accordance with NRC NRR Office Instruction LIC-111, as discussed above.
The ongoing audit process, to include the in-office and onsite portions, allows the staff to assess whether it has enough information to make a safety evaluation of the Integrated Plans. The audit allows the staff to review open and confirmatory items from the mitigation strategies ISE, RAI responses from the spent fuel pool instrumentation (SFPI) ISE, the licensee's integrated plans, and other audit questions. Additionally, the staff gains a better understanding of submitted information, identifies additional information necessary for the licensee to supplement its plan, and identifies any staff potential concerns. The audit's onsite portion will occur prior to declarations of compliance for the first unit at each site.
This document outlines the onsite audit process that occurs after ISE issuance as licensees provide new or updated information via periodic updates, update audit information on e-portals, provide preliminary Overall Program Documents (OPDs)/Final Integrated Plans (FIPs), and continue in-office audit communications with staff while proceeding towards compliance with the orders.
Following the licensee's declarations of order compliance, the NRC staff will evaluate the OIPs, as supplemented, the resulting site-specific OPDs/FIPs, and, as appropriate, other licensee submittals based on the requirements in the orders. For Order EA-12-049, the staff will make a safety determination regarding order compliance using the Nuclear Energy Institute (NEI) guidance document NEI 12-06, "Diverse and Flexible Coping Strategies (FLEX) Implementation Guide" issued in August 2012 (ADAMS Accession No. ML12242A378), as endorsed, by NRC Japan Lessons-Learned Project Directorate (JLD) interim staff guidance (ISG)
JLD-ISG-2012-01 "Compliance with Order EA-12-049, 'Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events"' (ADAMS Accession No. ML12229A174) as providing one acceptable means of meeting the order requirements. For Order EA-12-051, the staff will make a safety determination regarding order compliance using the NEI guidance document NEI 12-02, "Industry Guidance for Compliance with NRC Order EA-12-051, 'To Modify Licenses with Regard to Reliable Spent Fuel Pool Instrumentation"' (ADAMS Accession No. ML12240A307), as endorsed, with exceptions and clarifications, by NRC ISG JLD-ISG-2012-03 "Compliance with Order EA-12-051, 'Reliable Spent Fuel Pool Instrumentation"' (ADAMS Accession No. ML12221A339) as providing one acceptable means of meeting the order requirements. Should the licensee propose an alternative strategy or other method deviating from the guidance, additional staff review will be required to evaluate if the alternative strategy complies with the applicable order.
AUDIT SCOPE As discussed, onsite audits will be performed per NRR Office Instruction LIC-111, "Regulatory Audits," to support the development of safety evaluations. Site-specific OIPs and OPDs/FIPs rely on equipment and procedures that apply to all units at a site, therefore, audits will be planned to support the "first unit at each site." Onsite audits for subsequent units at a site will be on an as-needed basis. The purpose of the audits is to obtain and review information responsive to the DCPP OIPs, as supplemented, open and confirmatory items from the mitigation strategies ISE, RAI responses from the SFPI ISE, and to observe and gain a better understanding of the basis for the site's overall programs to ensure the licensee is on the
correct path for compliance with the Mitigation Strategies and SFPI orders. These may include, but are not limited to:
- Onsite review and discussion for the basis and approach for detailed analysis and calculations (Orders EA-12-049, EA-12-051 );
- Walk-throughs of strategies and staging of equipment to assess feasibility, timing, and effectiveness of a given mitigating strategy or integration of several strategies (Order EA-12-049);
- Storage, protection, access, and deployment feasibility and practicality for onsite portable equipment (Order EA-12-049);
- Evaluation of staging, access, and deployment of offsite resources to include National SAFER Response Center (NSRC) provided equipment (Order EA-12-049); and
- Review dimensions and sizing of the SFP area, placement of the SFP level instrumentation, and applicable mounting methods and design criteria (Order EA-12-051 ).
NRC AUDIT TEAM Title Team Member Team Lead and Project Manager Tony Brown Technical Support - Reactor Systems Joshua Miller Technical Support - Electrical Matthew McConnell Technical Support - Balance of Plant Kevin Roche Technical Support - SFPI Khoi Nguyen LOGISTICS The audit will be conducted onsite at DCPP on August 17-2_1, 2015. Entrance and exit briefings will be held with the licensee at the beginning and end of the audit, respectively, as well as daily briefings of team activities. Additional details will be addressed over the phone. A more detailed schedule is provided below.
A private conference room is requested for NRC audit team use with access to audit documentation upon arrival and as needed.
DELIVERABLES An audit report/summary will be issued to the licensee within 90 days from the end of the audit.
INFORMATION NEEDS
- Materials/documentation provided in responses to open or confirmatory items and RAls in the ISEs;
operator training plans, NSRC (SAFER) DCPP Response Plan; and
- Materials/documentation for staff audit questions and/or licensee OIP identified open items To provide supplemental input to the ongoing audit of documents submitted to the NRC and made available via e-portal, the onsite audit will have three components: 1) a review of the overall mitigating strategies for the site, including, if needed, walk-throughs of strategies and equipment staging of select portions; 2) a review of material relating to open or confirmatory items and RAls from the ISEs, staff audit questions, and licensee-identified open items; and 3) additional specific issues requested by NRC technical reviewers related to preparation of a safety evaluation. Each part is described in more detail below:
Part 1 - Overall Mitigating Strategies and Program Review:
During the onsite audit, please be prepared to conduct a tabletop discussion of the site's integrated mitigating strategies and SFPI compliance program. This discussion should address the individual components of the plans, as well as the integrated implementation of the strategies including a timeline. The licensee team presenting this should include necessary representatives from site management, engineering, training, and operations that were responsible for program development, and will be responsible for training and execution.
Following the tabletop discussion, please be prepared to conduct walk-throughs of procedures and demonstrations of equipment as deemed necessary by NRC audit team members. Include representatives from engineering and operations that will be responsible for training and execution. At this time we expect, at a minimum, to walk-through the items below. Based on the tabletop presentations and audit activities, this list may change.
WALK-THROUGH LIST:
- 1. Walk-through a sample of strategies that will be delineated by specific NRC technical staff audit team members
- 2. Walk-through of portable and/or pre-staged (FLEX) diesel generator (DG) strategies/procedures, to include power supply pathways, areas where manual actions are required, and electrical isolation
- 3. Walk-through of building access procedures, to include any unique access control devices
- 4. Strategy walk-through of transfer routes from staging and storage areas to deployment locations for both onsite and offsite portable equipment
- 5. Strategy walk-through for core cooling and reactor coolant system inventory, to include portable pumping equipment, flow paths, and water sources and the related reactor systems analysis and calculations
- 6. Walk-through of communications enhancements
- 8. Walk-through of procedures for load shed, with an operator who would perform this procedure during an event, demonstrating the steps needed to perform the load shed Part 2 - Specific Technical Review Items:
During the visit, the following audit items will be addressed from the licensee's ISEs (open items, confirmatory items, and SFPI RAls); audit question list; licensee OIP, as supplemented, open items; and draft safety evaluation additional questions. Please provide documents or demonstrations as needed to respond to each item.
Part 3 - Specific Topics for Discussion:
- 1. Draft of DCPP OPD/FIP
- 2. Reactor systems analyses
- 3. Training
- 4. Portable (FLEX) equipment maintenance and testing
- 6. The licensee's plan for coordination with California state authorities for delivery of Phase 3 FLEX equipment.
- 7. Check the status of upgrades to the site's communications systems as noted in the NRC staff letter dated June 6, 2013 (ADAMS Accession Nos. ML13154A007).
Proposed Schedule Onsite Day 1, Monday, August 17, 2015 0800 Audit team arrives onsite for badging/dosimetry 1000 Entrance meeting/licensee presentation of strategies 1600 NRC audit team meeting 1630 Team lead daily debrief/next day planning with licensee Onsite Day 2, Tuesday, August 18, 2015 0800 Check in onsite 0830 NRC audit team activities:
- Technical area break-out discussions between NRC and licensee staff in the areas of reactor systems, electrical, balance-of-plant/structures, SFPI, and others
- Review documents relating to open or confirmatory items, RAls, codes, analyses, etc.
1200 Lunch 1300 NRC audit team activities:
- Technical area break-out discussions between NRC and licensee staff in the areas of reactor systems, electrical, balance-of-plant/structures, SFPI, and others
- Review documents relating to open or confirmatory items, RAls, codes, analyses, etc.
1600 NRC audit team meeting 1630 Team lead daily debrief/next day planning with licensee Onsite Day 3, Wednesday, August 19, 2015 0800 Check in onsite 1200 Lunch 1300 Continue NRC audit team activities 1600 NRC audit team meeting 1630 Team lead daily debrief/next day planning with licensee
Onsite Day 4, Thursday, August 20, 2015 0800 Check in onsite 1200 Lunch 1300 Continue NRC audit team activities 1330 NRC audit team meeting 1630 NRG/Licensee pre-exit meeting Onsite Day 5, Friday, August 21, 2015 0800 Check in onsite for audit team exit meeting preparation 0900 NRG/Licensee exit meeting 1000 Audit closeout/departure
ML13311B362). By letter dated March 26, 2014 (ADAMS Accession No. ML14083A620), the NRC notified all licensees and construction permit holders that the staff is conducting in-office and onsite audits of their responses to Order EA-12-051 in accordance with NRC NRR Office Instruction LIC-111, as discussed above.
The ongoing audit process, to include the in-office and onsite portions, allows the staff to assess whether it has enough information to make a safety evaluation of the Integrated Plans. The audit allows the staff to review open and confirmatory items from the mitigation strategies ISE, RAI responses from the spent fuel pool instrumentation ISE, the licensee's integrated plans, and other audit questions. Additionally, the staff gains a better understanding of submitted information, identifies additional information necessary for the licensee to supplement its plan, and identifies any staff potential concerns. The audit's onsite portion will occur prior to declarations of compliance for the first unit at each site.
This document outlines the onsite audit process that occurs after ISE issuance as licensees provide new or updated information via periodic updates, update audit information on e-portals, provide preliminary Overall Program Documents/Final Integrated Plans, and continue in-office audit communications with staff while proceeding towards compliance with the orders.
The staff plans to conduct an onsite audit at DCPP in accordance with the enclosed audit plan from August 17-21, 2015.
If you have any questions, please contact me at 301-415-1924 or by e-mail at Tony.Brown@nrc.gov.
Sincerely, IRA/
Tony Brown, Project Manager Orders Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Docket Nos.: 50-275 and 50-323
Enclosure:
Audit plan cc w/encl: Distribution via Listserv DISTRIBUTION:
PUBLIC RidsRgn4MailCenter Resource JOMB R/F TBrown, NRR/JLD RidsNrrDorllpl4-1 Resource MHalter, NRR/JLD RidsNrrPMDiabloCanyon Resource RidsAcrsAcnw_MailCTR Resource RidsNrrLASLent Resource ADAMS Accession No.: ML15189A338 *via email OFFICE NRR/JLD/JOMB/PM NRR/JLD/LA NRR/JLD/JOMB/BC NRR/JLD/JOMB/PM NAME TBrown Slent MHalter TBrown DATE 07/09/15 07/08/15 07/13/15 07/20/15