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Category:Charter
MONTHYEARML0718401522007-07-0303 July 2007
Special Inspection Team Charter
2007-07-03
[Table view]
Category:Memoranda
MONTHYEARML23151A5472023-06-0101 June 2023
Public Meeting Summary - 2022 Annual Assessment Meeting Regarding North Anna Power Station, Docket Nos. 50-338 and 50-339; and Surry Power Station
ML22130A1702022-05-20020 May 2022
Summary of April 21, 2022, Public Meeting to Discuss Potential Emergency Preparedness License Amendment Request
ML22130A0332022-05-0909 May 2022
Public Meeting Summary 2021 Annual Assessment Meeting Regarding North Anna Power Station, Docket Nos. 50-338 and 50-339; and Surry Power Station, Docket Nos. 50-280 and 50-281, Meeting Number 20220349
ML22034A3932022-02-16016 February 2022
Calendar Year 2021 Security Baseline Completion Memo
ML21293A0992021-12-10010 December 2021
Meeting Summary for Draft Supplemental Environmental Impact Statement Public Meeting
ML21221A3012021-10-18018 October 2021
June 24, 2021, Meeting Summary: Discussion of Dominion'S Response to Select Staff Requests for Additional Information on Subsequent License Renewal Application (EPID No. L-2020-SLR-0000) - Memo
ML21239A0642021-09-0202 September 2021
August 27, 2021, Summary: Discussion Between NRC and Dominion Regarding the NAPS Subsequent License Renewal - an Inconsistency in Documentation Regarding RCP Code Case N-481 (EPID No. L-2020-SLR-0000) - Memo
ML21236A0512021-08-27027 August 2021
August 16, 2021, Meeting Summary: Discussion of Aging Management of Cyclic Fatigue in the Subsequent License Renewal Application (EPID No. L-2020-SLR-0000) - Memo
ML21221A0262021-08-26026 August 2021
Meeting Summary Regarding Discussion of Dominion'S Response to Select Staff Requests for Additional Information on Subsequent License Renewal Application
ML21221A1362021-08-10010 August 2021
Meeting Summary: Discussion of Dominion'S Response to Select Staff Requests for Additional Information on Subsequent License Renewal Application
ML21145A2122021-06-0909 June 2021
Meeting Summary: Discussion of Dominion'S Response to Select Staff Requests for Additional Information on Subsequent License Renewal Application (EPID No. L-2020-SLR-0000) - Memoranda
ML21131A1612021-05-11011 May 2021
Public Meeting Summary - 2020 Annual Assessment Meeting Regarding Virgil C. Summer Nuclear Station, Docket No. 50-395; North Anna Power Station, Docket Nos. 50-338 and 50-339; and Surry Power Station, Docket Nos. 50-280 and 50-281, Meeting
ML21027A0232021-01-28028 January 2021
Summary of January 26, 2021 Closed Meeting with Dominion Energy Regarding Performance of Force on Force Exercises in a Pandemic Environment
ML20350B4562020-12-17017 December 2020
Summary of the Historic and Cultural Resources Environmental Audit Meeting Related to the Review of the Subsequent License Renewal Application for the North Anna Power Station, Units 1 and 2
ML20136A1752020-05-15015 May 2020
Sur 2019 Aam Meeting Summary
ML19190A2862019-07-16016 July 2019
Summary of July 7, 2019, Public Meeting with Dominion to Discuss Open Phase Condition RAI Responses
ML19165A1122019-06-14014 June 2019
Memoranda to File Environmental Assessment and Finding of No Significant Impact for the Virginia Electric and Power Company, Dominion Energy Kewaunee, Inc., and Dominion Nuclear Connecticut, Inc.'S Decommissioning Funding Plans Submitted
ML19128A3432019-05-0808 May 2019
Public Meeting Summary - 2018 Annual Assessment Public Meeting Regarding North Anna Power Station, Docket Nos. 50-338 and 50-339
ML18151A4682018-05-29029 May 2018
Public Meeting Summary - 2017 Annual Assessment Public Meeting Regarding North Anna Power Station, Docket Nos. 50-338 and 50-339
ML17209A7652017-08-0303 August 2017
Fire Protection Input for Millstone Power Station Unit 2 Exemption from Title 10 of the Code of Federal Regulations Part 50, Appendix R, Section Iii.G, Fire Protection of Safe Shutdown Capability, for Use of Operator Manual Actions
ML17137A0932017-05-17017 May 2017
Request for Additional Information, Alternative to Reactor Vessel Threads in Flange Examination Requirements
ML17123A2092017-05-0303 May 2017
Summary of Meeting to Discuss Annual Assessment of the North Anna Power Station, Units 1 and 2 with the Public for the Period of January 1, 2016 Through December 31, 2016
ML16215A0752016-08-24024 August 2016
North Anna Power Station - Audit Report for Proposed License Amendment to Revise the Technical Specifications to Address the Issue Identified in Westinghouse Documents NSAL-09-5. Rev. 1 and NSAL-15-I
ML16209A4132016-07-27027 July 2016
Safety Evaluation For North Anna Power Station, Units 1 And 2, Proposed License Amendment To Revise The Technical Specifications To Address The Issue Identified In Westinghouse Documents NSAL-09-5. Rev. 1 and NSAL-15-I (TAC No. MF7186 and MF7187)
ML16139A5892016-05-23023 May 2016
North Anna Trip Report, April 11, 2016
ML16124A7582016-05-0303 May 2016
April 14, 2016, Summer of Public Meeting - North Anna, Units 1 and 2
ML16098A5302016-04-14014 April 2016
Audit Plan - Application for Amendment North Anna Power Station, Units 1 and 2. the Proposed License Amendment Revises the Issues Identified in Westinghouse Documents NSAL-09-5, Rev 1 and NSAL-15-1
ML16088A2042016-03-28028 March 2016
Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template)
ML16088A2052016-03-28028 March 2016
Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations
ML15253A4032016-03-11011 March 2016
Recommendation for Dispositioning Proposed Generic Issue on the Effects of Downstream Dam Failures on Nuclear Power Plants
ML15281A2672015-10-28028 October 2015
Reassignment of U.S. Nuclear Regulatory Commission Branch Chief
ML15232A8112015-08-24024 August 2015
Evaluation of Information Related to Commitments 6 and 8 from Confirmatory Action Letter No. NRR-2011-002
ML15238B5922015-08-17017 August 2015
Review of Commitment Action Completion Confirmation Action Letter Regarding Earthquake in 2011
ML15230A2162015-08-13013 August 2015
Review of Commitment Actions in Confirmatory Action Letter Regarding Earthquake in 2011
ML15128A5462015-05-0808 May 2015
Summary of Public Meeting with North Anna, Units 1 and 2 to Discuss the Annual Assessment with the Public
ML14101A1202014-04-11011 April 2014
Public Meeting Summary - North Anna Power Station, Docket Nos. 50-338, 50-339
ML1208704282012-03-26026 March 2012
Memo C Bladey, Adm, Notice of EA and Fonsi - VEPCO, North Anna Power Station (72-1030, 50-338, 50-339, 72-56)
ML13127A3682012-03-13013 March 2012
Memo from M. Case to P. Hiland, Subject: Review of Draft Nureg/Cr - Xxxx Entitled, Ultrasonic Phased Array Assessment of the Interference Fit and Leak Path of the North Anna Unit 2 Control Rod Drive Mechanism Nozzle 63 with Destructive Vali
ML13219A0462012-03-13013 March 2012
Memo from M. Case to P. Hiland, Subject: Review of Draft NUREG/CR-XXXX Entitled, Ultrasonic Phased Array Assessment of the Interference Fit and Leak Path of the North Anna Unit 2 Control Rod Drive Mechanism Nozzle 63 with Destructive Valida
ML11277A0292011-10-0404 October 2011
Summary Audit Report of North Anna Post-Seismic Fuel Inspections
ML11271A1782011-10-0303 October 2011
Review of Topical Report, Revision 11 for Kewaunee Power Station and ISFSI, Millstone Power Station, Units 1, 2, & 3 and ISFSI, North Anna Power Station, Units 1 & 2 and ISFSI, Surry Power Station, Units 1 & 2 and ISFSI (Tac ME6649, ME6650,
ML12054A1452011-09-19019 September 2011
Email from G. Thomas, NRR to D. Hoang, NRR Et Al. FW: North Anna Seismic Report - Summary Report of August 23/2011 Earthquake Response and Restart Readiness Determination Plan North Anna Power Station Units 1 and 2 and ISFSI
ML12053A4082011-09-15015 September 2011
Email from M. Khanna, NRR to K. Karwoski, NRR Et Al. on North Anna Seismic Issue Restart Action Plan Draft Final.Docx
ML11249A1562011-09-0707 September 2011
Notice of Forthcoming Meeting with Virginia Electric and Power Company (Vepco), on the August 23, 2011 Earthquake Near the North Anna Power Station, Unit Nos. 1 and 2
ML12005A0302011-08-30030 August 2011
Letter from V. Mccree, Region II to M. Franke, Region II; Augmented Inspection Charter to Evaluate Total Loss of Offsite Power, Dual Unit Reactor Trips and Plant Equipment Issues Following a Seismic Event at North Anna
ML11171A7022011-06-29029 June 2011
Final Response to TIA 2011-003, Nine Mile Point Nuclear Station Unit 1 Licensing Basis for Degraded Grid Relay Time Delays
ML1027800722010-10-0404 October 2010
Special Inspection Charter
ML1023100152010-08-18018 August 2010
Notice of Meeting with Virginia Electric & Power to Discuss Proposed Addition of Analytical Methodology to Core Operating Limits Report
ML1017304812010-06-22022 June 2010
Forthcoming Meeting with Virginia Electric and Power Company (Vepco), Regarding North Anna Power Station, Unit Nos. 1 and 2 to Discuss Fuel Transition Licensing Approach, Schedule of Submittals, Alignment of Resources and Key Deliverables
ML0915605552009-06-0808 June 2009
Notice of Meeting with Virginia Electric and Power Co. (Dominion) to Discuss a Proposed License Amendment Regarding the Emergency Core Cooling System (ECCS) Pump Room Exhaust Air Cleanup System
2023-06-01
[Table view] |
Text
July 3, 2007 MEMORANDUM TO: Shakur Walker, Team Leader Special Inspection Team FROM: William D. Travers, Regional Administrator /RA/
SUBJECT:
SPECIAL INSPECTION TEAM CHARTER A Special Inspection Team (SIT) has been established for North Anna to inspect and assess the facts surrounding the Unit 2 spurious actuation of the 'B' train of safety injection (SI) and reactor trip. The team composition is as follows:
Team Leader: Shakur Walker, RII Team Members: Frank Erhardt, RII James Reece, RII The objectives of the inspection are to: (1) review the facts surrounding the Unit 2 spurious actuation of the 'B' train of safety injection and reactor trip on June 29, 2007; (2) assess the licensees response and investigation of the event; (3) identify any generic issues associated with the event; and (4) conduct an independent extent of condition review.
For the period during which you are leading this inspection and documenting the results, you will report directly to me. The guidance in Inspection Procedure 93812, Special Inspection and Management Directive 8.3, NRC Incident Investigation Procedures, applies to your inspection.
If you have any questions regarding the objectives of the enclosed charter, contact Charles A. Casto at (404) 562-4500.
Docket Nos.: 50-338, 50-339 License Nos.: NPF-4, NPF-7
Enclosure:
SIT Charter cc w/encl:
L. Reyes, EDO S. Campbell, EDO W. Kane, DEDO CONTACT: Eugene F. Guthrie, DRP/RII 404-562-4662
OFFICE RII:DRS RII:DRP RII:DRP SIGNATURE /RA By E. Guthrie for/ /RA/ /RA By E. Guthrie for/
NAME JShea EGuthrie CCasto DATE 07/ 03 /2007 07/ 02 /2007 07/ 02 /2007 7/ /2007 7/ /2007 7/ /2007 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO SPECIAL INSPECTION TEAM (SIT) CHARTER UNIT 2 SPURIOUS SAFETY INJECTION ACTUATION AND REACTOR TRIP Basis for the Formation of the SIT -On 06/29/07 at approximately 5:52 p.m., Unit 2 received a spurious 'B' train safety injection (SI). This spurious 'B' train SI resulted in a Unit 2 reactor trip.
The single train SI resulted in ECCS flow to the reactor coolant system (RCS). The A train of SI was manually initiated per station emergency operating procedures. Subsequently, the A train SI was secured and reset however, the 'B' train of SI could not be reset. Continued injection from the B train SI resulted in RCS inventory increasing resulting in multiple actuations of the pressurizer power operated relief valves (PORV) to limit RCS system pressure. RCS inventory from the PORVs discharged to the pressurizer relief tank, which overfilled the tank and the rupture disc ruptured. Water from the rupture disc was released to the containment sump. Through local, manual actions the licensee was subsequently successful in securing injection from the B train of safety injection, and reactor coolant system pressure and level control was then maintained by normal charging and letdown. During the 'B' train safety injection a main turbine and reactor trip occurred; auxiliary feedwater (AFW) pumps started; a containment phase 'A' isolation occurred, ECCS pump actuation occurred; and emergency diesel generators started.
The cause of the spurious actuation on the 'B' train SI was determined, by the licensee, to be caused by a card failure in the SSPS system. The licensee determined that this card failure caused system voltage to reduce sufficiently to spuriously actuate portions of the ECCS systems.
Objectives of the SIT - The objectives of the inspection are to: (1) review the facts surrounding the Unit 2 spurious actuation of the 'B' train of safety injection and reactor trip on June 29, 2007; (2) assess the licensees response and investigation of the event; (3) identify any generic issues associated with the event; and (4) conduct an independent extent of condition review.
To accomplish these objectives, the following will be performed:
- a. Develop a complete sequence of events related to the event.
- b. Verify and assess the correct operation of equipment that actuated during the event.
- c. Verify and assess the Licensees post trip review and investigations were adequate.
- d. Review proper operation and design basis function of the power operated relief valves which cycled during the event on June 29,2007. Verify and assess the licensees inspection of the material condition of the power operated relief valves.
- e. Identify and evaluate the effectiveness of the immediate actions taken by the licensee in response to this event including use of the emergency operating procedures related to starting the A train safety injection and the inability to reset B train safety injection.
- f. Evaluate the adequacy of the procedures used by the operators to respond to the event.
- g. Determine the cause, common cause potential, extent of condition, and corrective actions associated with the Unit 2, SSPS card failure.
- h. Determine if there are any generic implications associated with this event. Promptly communicate any potential generic issues to regional management.
Enclosure
2
- i. Review and assess the licensees testing and evaluation of the maintenance and card replacement activities in the SSPS.
- j. Determine and assess the licensees implementation of the emergency action level recommendations for appropriate emergency classification on Unit 2 during the event on June 29, 2007.
- k. Document the inspection findings and conclusions in an inspection report within 30 days of the inspection.
