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Category:Inspection Plan
MONTHYEARIR 05000275/20240052024-08-22022 August 2024 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2024005 and 05000323/2024005) ML24114A2032024-04-22022 April 2024 Request for Information for EP Program and Performance Indicator Verification Inspection (Wolf Creek Nuclear Generating Station) Inspection Report 05000482/2024003 ML24065A3662024-03-0404 March 2024 Notification of Site Inspection for License Renewal and Request for Information Inspection (05000323/2024011) IR 05000275/20230062024-02-28028 February 2024 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2023006 and 05000323/2023006) ML23249A2782023-09-0606 September 2023 Inservice Inspection Request for Information IR 05000275/20230052023-08-22022 August 2023 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2023005 and 05000323/2023005) - Mid Cycle Letter IR 05000275/20220062023-03-0101 March 2023 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022006 and 05000323/2022006) ML23005A1732023-01-0909 January 2023 Notification of Commercial Grade Dedication Inspection IR 05000275/20220052022-08-23023 August 2022 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022005 and 05000323/2022005) ML22194A8872022-07-11011 July 2022 September 2022 Emergency Preparedness Exercise Inspection - Request for Information Email ML22068A2312022-03-17017 March 2022 Notification of NRC Design Bases Assurance Inspection (Team) 05000275/2022011 and 05000323/2022011 and Initial Request for Information IR 05000275/20210062022-03-0202 March 2022 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2021006 and 05000323/2021006) ML22019A0412021-12-29029 December 2021 RFI ML21230A3902021-09-0101 September 2021 DC Mid-Cycle Inspection Plan Transmittal Letter 2021 ML21229A2242021-08-17017 August 2021 Notification of NRC Triennial Heat Exchanger/Heat Sink Performance Inspection (05000275/2021004 and 05000323/2021004) and Request for Information ML21130A3642021-06-21021 June 2021 DC 2021401 Information Request ML21069A2102021-03-12012 March 2021 Notification of Inspection (NRC Inspection Report 05000275/2021002, 05000323/2021002) and Request for Information IR 05000275/20200062021-03-0303 March 2021 DC 2020 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 & 2 (Report 05000275/2020006 & 05000323/2020006) ML21061A3302021-02-25025 February 2021 Request for Information: Diablo Canyon Power Plant, Dated January 6, 2021; IR 05000275/323/2021-001 Occupational Radiation Safety Inspection - 2, 4 ML20301A2212020-10-27027 October 2020 Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000275/2021010 and 05000323/2021010) and Request for Information IR 05000275/20200052020-09-0101 September 2020 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2020005 and 05000323/2020005) ML20280A5432020-06-0303 June 2020 DC 2020 PIR Request for Information ML20055E1082020-03-0303 March 2020 DC 2019006 Annual Assessment Letter IR 05000275/20190052019-08-30030 August 2019 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2, Report 05000275/2019005 and 05000323/2019005 IR 05000275/20180062019-03-0404 March 2019 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018006 and 05000323/2018006) ML19043A9452019-02-20020 February 2019 Notification of Inspection (NRC Inspection Report 05000275/2019002, 05000323/2019002 and Request for Information IR 05000275/20180052018-08-31031 August 2018 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018005 and 05000323/2018005) IR 05000275/20170062018-03-0101 March 2018 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2017006 and 05000323/2017006) ML17243A3022017-08-28028 August 2017 Updated Non-Public Security Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 IR 05000275/20170052017-08-28028 August 2017 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2017005 and 05000323/2017005) IR 05000275/20160062017-03-0101 March 2017 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016006 and 05000323/2016006) ML17037D1232017-02-0606 February 2017 Notification of Inspection (NRC Inspection Report 05000275/2017002; 05000323/2017002) and Request for Information ML16239A2532016-08-31031 August 2016 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016005 and 05000323/2016005) IR 05000275/20160052016-08-31031 August 2016 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016005 and 05000323/2016005) IR 05000275/20164012016-08-31031 August 2016 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2016401 and 05000323/201640) IR 05000275/20150062016-03-0202 March 2016 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2015006 and 05000323/2015006) IR 05000275/20150052015-09-0101 September 2015 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2015005 and 05000323/2015005) IR 05000275/20154012015-09-0101 September 2015 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2015401 and 05000323/2015401) IR 05000275/20140012015-03-0404 March 2015 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2, (Report 05000275/2014001 and 05000323/2014001) IR 05000275/20140062014-09-0202 September 2014 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2014006 and 05000323/2014006) IR 05000275/20144022014-09-0202 September 2014 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2014402 and 05000323/2014402) IR 05000275/20130012014-03-0404 March 2014 IR 05000275-13-001 & 05000323-13-001, 02/12/2014, Diablo Canyon, Unit 1 & 2, Annual Assessment Inspection Plan ML13246A2882013-09-0303 September 2013 Midcycle Assessment Letter 2013 ML13206A1892013-07-25025 July 2013 IR 05000275-13-004, and 05000323-13-004, Diablo Canyon Power - Notification of NRC Triennial Heat Sink Performance Inspection IR 05000275/20128012013-03-0404 March 2013 Annual Assessment Letter for Diablo Canyon Power Plant Units 1 & 2 (IR 05000275-12-801 and 05000323-12-801) ML13032A3142013-02-0101 February 2013 IR 05000275-13-007, 05000323-13-007, on 05/20/2013, Diablo Canyon - Notification of NRC Component Design Bases Inspection and Initial RAI IR 05000275/20120062012-09-0404 September 2012 Mid-Cycle Performance Review and Inspection Plan - Diablo Canyon Power Plant (05000275/2012006, 05000323/2012006) IR 05000275/20120012012-03-0505 March 2012 Annual Assessment Letter for Diablo Canyon Power Plant - Units 1 and 2 (Report 05000275/2012001 and 05000323/2012001) ML1124401692011-09-0101 September 2011 Mid-Cycle Performance Review and Inspection Plan - Diablo Canyon Power Plant - Units 1 and 2 ML1029503242010-10-21021 October 2010 Notification of NRC Triennial Heat Exchanger Inspection 05000275-10-005 & 05000323-10-005 2024-08-22
[Table view] Category:Letter
MONTHYEARML24260A1222024-09-14014 September 2024 14 Sept 2024 Ltr - California Coastal Commission to Pg&E, Incomplete Consistency Certification for Requested Nuclear Regulatory Commission License Renewal for Diablo Canyon Power Plant DCL-24-087, License Renewal - Historic and Cultural Resources Reference Documents (Redacted)2024-09-12012 September 2024 License Renewal - Historic and Cultural Resources Reference Documents (Redacted) ML24262A2462024-09-11011 September 2024 10 CFR 2.206 - Diablo Canyon Units 1 and 2 Seismic - Petitioner Response to Acknowledgement Letter - DCL-24-083, CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated2024-09-0909 September 2024 CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated DCL-24-078, Pre-Notice of Disbursement from Decommissioning Trust2024-09-0303 September 2024 Pre-Notice of Disbursement from Decommissioning Trust DCL-24-082, Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment2024-08-28028 August 2024 Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment ML24205A0662024-08-27027 August 2024 OEDO-24-00083 - 10 CFR 2.206 - Ack Letter - Diablo Canyon Units 1 and 2 Seismic Core Damage Frequency - IR 05000275/20243012024-08-26026 August 2024 NRC Examination Report 05000275/2024301; 05000323/2024301 IR 05000275/20240052024-08-22022 August 2024 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2024005 and 05000323/2024005) DCL-24-077, Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident2024-08-15015 August 2024 Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident DCL-24-075, Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React2024-08-0808 August 2024 Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React IR 05000275/20240022024-08-0606 August 2024 Integrated Inspection Report 05000275/2024002 and 05000323/2024002 DCL-24-070, License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies2024-07-31031 July 2024 License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies DCL-24-071, Core Operating Limits Report for Unit 2 Cycle 252024-07-22022 July 2024 Core Operating Limits Report for Unit 2 Cycle 25 DCL-2024-523, Submittal of Report on Discharge Self-Monitoring2024-07-18018 July 2024 Submittal of Report on Discharge Self-Monitoring ML24187A1352024-07-16016 July 2024 Letter to Paula Gerfen - Diablo Canyon Units 1 and 2 - Summary of June 2024 Audit Related to the License Renewal Application Severe Accident Mitigation Alternatives Review IR 05000275/20240142024-07-11011 July 2024 Age-Related Degradation Inspection Report 05000275/2024014 and 05000323/2024014 IR 05000275/20244012024-07-0808 July 2024 Security Baseline Inspection Report 05000275/2024401 and 05000323/2024401 (Full Report) IR 05000323/20240112024-07-0303 July 2024 License Renewal Phase Report 05000323/2024011 DCL-2024-527, Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant2024-07-0101 July 2024 Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant DCL-24-066, Request to Extend the Nrg Approval of Alternative for Use of Full Structural Weld Overlay, REP-RHR-SWOL2024-06-27027 June 2024 Request to Extend the Nrg Approval of Alternative for Use of Full Structural Weld Overlay, REP-RHR-SWOL ML24155A2182024-06-18018 June 2024 OEDO-23-00350-NRR - (LTR-23-0228-1) - Closure Letter - 10 CFR 2.206 Petition from Mothers for Peace and Friends of the Earth Regarding Diablo Canyon ML24129A1762024-06-14014 June 2024 National Historic Preservation Act Section 106 Consultation – Results of Identification and Evaluation (Docket Number: 72-026) ML24200A2052024-06-0707 June 2024 Fws to NRC, List of Threatened and Endangered Species That May Occur in Your Proposed Project Location or May Be Affected by Your Proposed Project for Diablo Canyon License Renewal ML24099A2192024-05-29029 May 2024 Issuance of Amendment Nos. 245 and 247 Revision to TSs to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b ML24117A0132024-05-20020 May 2024 Letter to Paula Gerfen-Diablo Canyon Units 1 and 2-Regulatory Audit Regarding Severe Accident Mitigation Alternatives for the License Renewal Application DCL-24-052, Responses to NRC Requests for Additional Information on the Diablo Canyon Power Plant License Renewal Application Environmental Report2024-05-16016 May 2024 Responses to NRC Requests for Additional Information on the Diablo Canyon Power Plant License Renewal Application Environmental Report DCL-24-051, One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage2024-05-0808 May 2024 One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage ML24127A2042024-05-0202 May 2024 02May2024 Ltr - California Coastal Commission to Pg&E, Coastal Development Permit Needed for Pg&E’S Proposed Relicensing of Diablo Canyon Nuclear Power Plant DCL-24-049, 2023 Annual Radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Radiological Environmental Operating Report DCL-24-047, 2023 Annual Non-radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Non-radiological Environmental Operating Report L-24-004, Independent Spent Fuel Storage Installation - Responses to NRC Requests for Additional Information on the Diablo Canyon Independent Spent Fuel Storage Installation License Renewal Application (Cac/Epid 001028/L-2022-RNW-0007)2024-04-30030 April 2024 Independent Spent Fuel Storage Installation - Responses to NRC Requests for Additional Information on the Diablo Canyon Independent Spent Fuel Storage Installation License Renewal Application (Cac/Epid 001028/L-2022-RNW-0007) DCL-24-048, O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 20232024-04-30030 April 2024 O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 2023 DCL-24-027, 2023 Annual Radioactive Effluent Release Report2024-04-28028 April 2024 2023 Annual Radioactive Effluent Release Report DCL-24-045, Annual Report of Occupational Radiation Exposure for 20232024-04-24024 April 2024 Annual Report of Occupational Radiation Exposure for 2023 IR 05000275/20240012024-04-23023 April 2024 Integrated Inspection Report 05000275/2024001 and 05000323/2024001 ML24114A2032024-04-22022 April 2024 Request for Information for EP Program and Performance Indicator Verification Inspection (Wolf Creek Nuclear Generating Station) Inspection Report 05000482/2024003 ML24106A2882024-04-18018 April 2024 License Renewal Application Environmental Review RCIs and RAIs ML24106A2892024-04-18018 April 2024 Letter to Paula Gerfen - Diablo Canyon Units 1 and 2 - Summary of March 2024 Audit Regarding the Environmental Review of the License Renewal Application DCL-24-042, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-04-17017 April 2024 Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations ML24108A1122024-04-15015 April 2024 License Amendment Request 24-02 Request for Approval of DCPP Early Warning System to Meet 10 CFR 73.55(i)(2) and 10 CFR 73.55(e)(9)(vi)(A) DCL-24-022, Notification of Changes to Decommissioning Schedule2024-04-0202 April 2024 Notification of Changes to Decommissioning Schedule DCL-24-023, Revised Certification of Permanent Cessation of Power Operations2024-04-0202 April 2024 Revised Certification of Permanent Cessation of Power Operations DCL-24-031, Decommissioning Funding Report2024-03-27027 March 2024 Decommissioning Funding Report DCL-24-032, 2024 Annual Statement of Insurance for Pacific Gas and Electric Company’S Diablo Canyon Power Plant2024-03-27027 March 2024 2024 Annual Statement of Insurance for Pacific Gas and Electric Company’S Diablo Canyon Power Plant ML24082A2592024-03-25025 March 2024 Notice of Enforcement Discretion for Diablo Canyon Power Plant, Unit 2 (EPID L-2024-LLD-0002) - March 25, 2024 ML24081A0462024-03-22022 March 2024 Audit Summary in Support of the License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b DCL-24-028, Request for Enforcement Discretion Regarding Compliance with Technical Specification 3.0.3, Limiting Condition for Operation Applicability2024-03-21021 March 2024 Request for Enforcement Discretion Regarding Compliance with Technical Specification 3.0.3, Limiting Condition for Operation Applicability ML24081A4052024-03-21021 March 2024 Request for Enforcement Discretion Regarding Compliance with Technical Specification 3.0.3, Limiting Condition for Operation Applicability ML24065A1312024-03-20020 March 2024 ISFSI Renewal RAI Transmittal Letter 2024-09-09
[Table view] |
See also: IR 05000275/2013007
Text
UNITE D S TATE S
NUC LEAR RE GULATOR Y C OMMI S SI ON
R E G IO N I V
1600 EAST LAMAR BLVD
AR L I NGTON , TEXAS 7 601 1- 4511
February 1, 2013
Mr. Edward D. Halpin
Senior Vice President 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 - NOTIFICATION OF NRC COMPONENT
DESIGN BASES INSPECTION (05000275/2013007 and 05000323/2013007)
AND INITIAL REQUEST FOR INFORMATION
Dear Mr. Halpin:
On May 20, 2013, the NRC will begin a triennial baseline Component Design Bases Inspection
at the Diablo Canyon Power Plant. A seven-person team will perform this inspection using NRC
Inspection Procedure 71111.21, Component Design Bases Inspection.
The inspection focuses on components and operator actions that have high risk and low design
margins. The samples reviewed during this inspection will be identified during an information
gathering visit and during the subsequent in-office preparation week. In addition, a number of
operating experience issues will also be selected for review.
The inspection will include an information gathering site visit by the team leader and a senior
reactor analyst, and 3-weeks of onsite inspection by the team. The inspection will consist of five
NRC inspectors and two contractors, of which six will focus on engineering and one on
operations. The current inspection schedule is as follows:
Onsite Information Gathering Visit: May 20-23, 2013
Preparation Week(s): June 3-7, 2013 and June 17-21, 2013
Onsite Week(s): June 10-15, 2013, June 24-28, 2013, and July 8-12, 2013
The purpose of the information gathering visit is to meet with members of your staff to identify
potential risk-significant components and operator actions. The lead inspector will also request
a tour of the plant with members of your operations staff and probabilistic safety assessment
staff. During the onsite weeks, several days of time will be needed on the plant-referenced
simulator in order to facilitate the development of operator action-based scenarios. Additional
information and documentation needed to support the inspection will be identified during the
inspection, including interviews with engineering managers, engineers, and probabilistic safety
assessment staff.
E. Halpin -2-
Our experience with these inspections has shown that they are extremely resource intensive,
both for the NRC inspectors and the licensee staff. In order to minimize the inspection impact
on the site and to ensure a productive inspection, we have enclosed a request for information
needed for the inspection. The request has been divided into three groups. The first group lists
information necessary for the information gathering visit and for general preparation. This
information should be available to the regional office no later than May 13, 2013. Insofar as
possible, this information should be provided electronically to the lead inspector. Since the
inspection will be concentrated on high risk/low margin components, calculations associated
with your list of high risk components should be available to review during the information
gathering visit to assist in our selection of components based on available design margin.
The second group of documents requested is those items that the team will need access to
during the preparation week in order to finalize the samples to be inspected. The third group
lists information necessary to aid the inspection team in tracking issues identified as a result of
the inspection. It is requested that this information be provided to the lead inspector as the
information is generated during the inspection. Additional requests by inspectors will be made
throughout all three onsite weeks for specific documents needed to complete the review of that
component/selection. It is important that all of these documents are up-to-date and complete in
order to minimize the number of additional documents requested during the preparation and/or
the onsite portions of the inspection. In order to facilitate the inspection, we request that a
contact individual be assigned to each inspector to ensure information requests, questions, and
concerns are addressed in a timely manner.
The lead inspector for this inspection is Wayne C. Sifre. We understand that our licensing
engineer contact for this inspection is Mr. Mike McCoy. If there are any questions about the
inspection or the requested materials, please contact the lead inspector by telephone at
817-200-1193 or by e-mail at Wayne.Sifre@nrc.gov.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter will be
made available electronically for public inspection in the NRC Public Document Room or from
the Publicly Available Records (PARS) component of NRCs document system (ADAMS).
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Thomas R. Farnholtz, Chief
Engineering Branch 1
Division of Reactor Safety
Docket Nos.: 05000275, 05000323
License Nos.: DPR-80, DPR-82
Enclosure:
Component Design Bases Inspection Request for Information
E. Halpin -3-
cc: Electronic Distribution for Diablo Canyon Power Plant
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Steven.Reynolds@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
Acting DRP Deputy Director (Barry.Westreich@nrc.gov)
Acting DRS Director (Tom.Blount@nrc.gov)
Acting DRS Deputy Director (Jeff.Clark@nrc.gov)
Senior Resident Inspector (Thomas.Hipschman@nrc.gov)
Resident Inspector (Laura.Micewski@nrc.gov)
Branch Chief, DRP/B (Neil.OKeefe@nrc.gov)
Senior Project Engineer, DRP/B (Leonard.Willoughby@nrc.gov)
Project Engineer, DRP/B (David.You@nrc.gov)
DC Administrative Assistant (Madeleine.Arel-Davis@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Joseph.Sebrosky@nrc.gov)
Branch Chief, DRS/TSB (Ray.Kellar@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Technical Support Assistant (Loretta.Williams@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
OEMail Resource
RIV/ETA: OEDO (John.Cassidy@nrc.gov)
DRS/TSB STA (Dale.Powers@nrc.gov)
S:\DRS\REPORTS\Reports Drafts\DC 2013007 RFI WCS.docx ML13032A314
SUNSI Review Non-Sensitive Publicly Available
Initials:WCS Sensitive Non-Publicly Available
SRI:EB1 C:EB1
WSifre TFarnholtz
/RA/ /RA/
1/30/13 2/1/13
OFFICIAL RECORD COPY
Initial Request for Information
Component Design Bases Inspection
Diablo Canyon Power Plant
Inspection Report: 05000275/2013007, 05000323/2013007
Information Gathering Dates: May 20, 2013
Inspection Dates: June 10-13, 2013, June 24-28, 2013, July 8-12, 2013
Inspection Procedure: IP 71111.21, Component Design Bases Inspection
Lead Inspector: Wayne C. Sifre, Senior Reactor Inspector
I. Information Requested Prior to Information Gathering Visit (May 20, 2013)
The following information (Section I of this enclosure) should be sent to the Region IV
office in hard copy or electronic format (Certrec IMS preferred), to the attention of Wayne
Sifre by May 13, 2013, to facilitate the reduction in the items to be selected for a final list
during the preparation week June 3, 2013. The inspection team will finalize the selected
list during the prep week using the additional documents requested in Section II of this
enclosure. The specific items selected from the lists shall be available and ready for
review on the day indicated in this request. *Please provide requested documentation
electronically in pdf files, Excel, or other searchable formats, if possible. The
information should contain descriptive names, and be indexed and hyperlinked to
facilitate ease of use. Information in "lists" should contain enough information to be
easily understood by someone who has knowledge of pressurized water reactor
technology. If requested documents are large and only hard copy formats are available,
please inform the inspector(s), and provide subject documentation during the first day of
the onsite inspection.
1. An Excel spreadsheet of equipment basic events (with definitions) including
importance measures sorted by risk achievement worth (RAW) and Fussell-
Vesely (FV) from your internal events probabilistic risk assessment (PRA).
Include basic events with RAW value of 1.3 or greater.
2. Provide a list of the top 500 cut-sets from your PRA.
3. Copies of PRA system notebooks and the latest PRA summary document.
4. An Excel spreadsheet of PRA human action basic events or risk ranking of
operator actions from your site specific PSA sorted by RAW and FV. Provide
copies of your human reliability worksheets for these items.
5. If you have an external events or fire PSA model, provide the information
requested in items 1-4 for external events and fire.
-1- Enclosure
6. Any pre-existing evaluation or list of components and associated calculations
with low design margins (i.e., pumps closest to the design limit for flow or
pressure, diesel generator close to design required output, heat exchangers
close to rated design heat removal, etc.).
7. List of high risk maintenance rule systems/components and functions; based on
engineering or expert panel judgment.
8. A list of operating experience evaluations for the last 2 years.
9. A list of all time-critical operator actions in procedures.
10. A list of permanent and temporary modifications sorted by component identified
in Item 1.
11. List of current operator work arounds/burdens.
12. A list of the design calculations, which provide the design margin information for
components included in Item 1. (Calculations should be available during the
information gathering visit).
13. List of root cause evaluations associated with component failures or design
issues initiated/completed in the last 5 years.
14. Current management and engineering organizational charts.
15. Diablo Canyon Power Plant IPEEE, if available electronically.
16. Mechanical piping drawings for:
- Engineered safety features
17. Electrical one-line drawings for:
- Offsite power/switchyard supplies
- Emergency AC/DC power systems including
- 125VDC/24VDC safety class systems
18. List of any common-cause failures of components in the last 3 years.
19. An electronic copy of the Design Bases Documents.
20. An electronic copy of the System Health notebooks.
-2- Enclosure
II. Information Requested to be Available on First Day of Preparation Week (June 3,
2013)
1. List of condition reports (corrective action documents) associated with each of the
selected components for the last 5 years.
2. The corrective maintenance history associated with each of the selected components
for the last 2 years.
3. Copies of calculations associated with each of the selected components (if not
previously provided), excluding data files. Please review the calculations and also
provide copies of reference material (such as drawings, engineering requests, and
vendor letters).
4. Copies of operability evaluations associated with each of the selected components
and plans for restoring operability, if applicable.
5. Copies of selected operator work-around evaluations associated with each of the
selected components and plans for resolution, if applicable.
6. Copies of any open temporary modifications associated with each of the selected
components, if applicable.
7. Trend data on the selected electrical/mechanical components performance for last 3
years (for example, pumps performance including in-service testing, other vibration
monitoring, oil sample results, etc., as applicable).
8. A copy of any internal/external self-assessments and associated corrective action
documents generated in preparation for the inspection.
9. A copy of engineering/operations related audits completed in the last 2 years.
10. List of motor operated valves (MOVs) in the program, design margin and risk
ranking.
11. List of air operated valves (AOVs) in the valve program, design and risk ranking.
12. Structure, system and components in the Maintenance Rule (a)(1) category.
13. Site top 10 issues list.
14. Procedures used to accomplish operator actions associated with the basic events in
your PRA.
15. List of licensee contacts for the inspection team with pager or phone numbers.
-3- Enclosure
III. Information Requested to be provided throughout the inspection.
1. Copies of any corrective action documents generated as a result of the teams
questions or queries during this inspection.
2. Copies of the list of questions submitted by the team members and the
status/resolution of the information requested (provide daily during the inspection to
each team member).
3. Reference materials (available electronically and as needed during all onsite weeks):
- General set of plant drawings
- Procurement documents for components selected
- Plant procedures (normal, abnormal, emergency, surveillance, etc.)
Inspector Contact Information:
Wayne C. Sifre Robert Latta Clyde Osterholtz
Senior Reactor Inspector Senior Reactor Inspector Senior Operations Engineer
817-200-1193 817-200-1532 817-200-1269
Wayne.Sifre@nrc.gov Robert.Latta@nrc.gov Clyde.Osterholtz@nrc.gov
Jeffrey Josey John Watkins
Senior Resident Inspector Reactor Inspector
Jeffrey.Josey@nrc.gov John.Watkins@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Wayne C. Sifre
1600 East Lamar Blvd.
Arlington, TX 76011-4511
-4- Enclosure