Letter Sequence Approval |
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MONTHYEARML13324A4801984-11-0303 November 1984
Forwards Justification for Continued Operation of Equipment Requiring Environ Qualification,As Part of Efforts to Return Unit 1 to Svc
Project stage: Other
ML13324A4981984-11-19019 November 1984
Documents Results of 831220 Meeting W/Nrc in Bethesda,Md Re Environ Qualification of safety-related Electrical Equipment.Addl Info Re Environ Qualification Program Encl, Per 840509 Request
Project stage: Meeting
ML13324A4991984-11-19019 November 1984
Informs of Completion of Environ Qualification of Listed Electrical Equipment,Including Reactor Coolant Temp Detectors & Containment Hydrogen Monitors.Qualification Packages for Equipment Will Be Completed by 850331
Project stage: Other
ML13324A5631985-02-26026 February 1985
Submits Certification of Compliance Re Environ Qualification of Electrical Equipment Per 10CFR50.49.Environ Qualification of All Equipment Will Be Completed by 850331
Project stage: Other
ML13324A5711985-03-11011 March 1985
SER Supporting Environ Qualification of Electric Equipment Important to Safety,Per Requirements of 10CFR50.49
Project stage: Other
ML13324A5681985-03-11011 March 1985
Forwards SER Re Environ Qualification of Electric Equipment Important to Safety.Equipment Qualification Program in Compliance w/10CFR50.49.Final Environ Qualification of Electric Equipment Will Be Completed by 850331
Project stage: Approval
ML20235Z4081987-10-16016 October 1987
Summary of Operating Reactors Events Meeting 87-35 on 871013.List of Attendees,Events Discussed,Significant Elements of Events & Summary of Reactor Scrams & Comparison of Wk Statistics W/Industry Averages Encl
Project stage: Meeting
ML13319A7911987-10-16016 October 1987
Forwards Description of ESF Single Failure Analysis,Per NRC 860923 Request,Resulting from 860730 Failure of PT-59 Which Identified Single Failure Susceptibility of Reactor Protection Sys.Final Rept Will Be Submitted by 871106
Project stage: Other
ML13336A0441987-10-20020 October 1987
Summary of 871009 Meeting W/Util in Bethesda,Md Re Licensee Identified Possible Failure in ESF Equipment.List of Attendees & Slides Used by Licensee Encl
Project stage: Meeting
ML13333A5941987-12-0101 December 1987
Forwards Revised Better Estimate Analysis for Cases 5 & 6 to Support Justification for Continued Operation for Remainder of Cycle.Better Estimate Analysis for Core Response During Main Steam Line Break (Cases 5 & 6) Also Encl
Project stage: Other
ML13333A6031987-12-0202 December 1987
Forwards Safety Evaluation Accepting Util 871016 Single Failures Analysis for Esf,Per 871009 Meeting.Justification for Interim Plant Operation Acceptable Until 871214,pending Further Analysis
Project stage: Approval
ML13333A6081987-12-0202 December 1987
Safety Evaluation Re Single Electrical Failures Affecting safety-related Function of Esfs.Util 871016 Justification for Continued Plant Operation Acceptable Until 871214. Operation Beyond 871214 Must Be Supported by Addl Analyses
Project stage: Approval
ML13333A6001987-12-0808 December 1987
Provides Addl Info Re ESF Single Failure Analysis,Including Discussion of Method Used to Determine Min Acceptable DNBR Applicable for Macbeth Correlation at Sys Pressures Established by Analysis,Per 871204 Request.Graph Also Encl
Project stage: Other
ML13333A6141987-12-0909 December 1987
Forwards Proprietary ESF Single Failure Analysis Re Min Value of Dnbr.Proprietary Calculation of DNBR & Supporting Affidavit Withheld (Ref 10CFR2.790)
Project stage: Other
ML13333A6321987-12-11011 December 1987
Safety Evaluation Supporting Util Justification for Interim Plant Operation Re ESF Single Failure Vulnerability
Project stage: Approval
ML13333A6271987-12-11011 December 1987
Forwards Safety Evaluation Re Util 871016 Submittal of ESFs Single Failure Analyses & 871201,08 & 09 Submittals of Analyses Justifying Operation of Plant for Remainder of Current Operating Cycle.Justification Acceptable
Project stage: Approval
ML13331B0101988-02-19019 February 1988
Forwards Fee for 871016 Application for Review of Justification for ESFs Single Failure Analysis,Per 880127 Request
Project stage: Request
ML13316B8971988-02-26026 February 1988
Summary of 880225 Mid Level Mgt Meeting W/Util Re Status of Licensee Root Cause Evaluation of Environ Qualification Problem W/Unit 1,control of Boron Concentration & Focus of NRC Programs Toward Insp of Utils in Future
Project stage: Meeting
ML13330B2671988-03-11011 March 1988
Informs of Action Planned to Correct Deficiencies in Environ Qualification Program.Work Being Performed Will Result in Equipment Being Qualified for Postulated Harsh Environ Before Restart from Current Maint Outage
Project stage: Other
ML13330B2801988-03-22022 March 1988
Notification of 880324 Meeting W/Licensee in Region V Ofc to Discuss Environ Qualification Concerns & Corrective Actions to Be Taken by Licensee Before Startup
Project stage: Meeting
ML13330B2751988-03-22022 March 1988
Confirms 880316 & 18 Telcons Between Ph Johnson & Ma Wharton Re 880324 Mgt Meeting in Region V Ofc to Discuss Facility Environ Qualification Deficiencies & Planned Corrective Actions Before Resuming Operation.Meeting Notice Encl
Project stage: Meeting
ML13330B2851988-03-30030 March 1988
Submits Info Re Environ Qualification of Electrical Equipment.Concludes That Risk Associated W/Any 10CFR50.49(b)(2) Equipment That Might Exists Considered Low & Discrepancies Identified Will Be Promptly Dispositioned
Project stage: Other
05000206/LER-1988-001-02, :on 880225,several Components Requiring Environ Qualification Found Omitted from Equipment Qualification Master List.Caused by Inadequate Methodology During List Generation.Installed Equipment Reviewed1988-03-30030 March 1988
- on 880225,several Components Requiring Environ Qualification Found Omitted from Equipment Qualification Master List.Caused by Inadequate Methodology During List Generation.Installed Equipment Reviewed
Project stage: Other
ML13330B2891988-04-0101 April 1988
Describes Util Compliance w/10CFR50.49.Util Believed All safety-related Equipment Was Included on Environ Qualification Master List (Eqml) & Fully Qualified After Returning to Svc from Cycle 9 Refueling Outage.Eqml Encl
Project stage: Other
ML13330B2981988-04-26026 April 1988
Discusses Plant Comprehensive Program Addressing 10CFR50.49(b)(2) Equipment Environ Qualification.Util Decided to Perform Program on Accelerated Schedule Prior to Unit Restart
Project stage: Other
ML13330B3091988-05-11011 May 1988
Confirms 880509 Telcon Re Environ Qualification (Eq). Licensee Made Commitment to Provide Ltr Describing Recent EQ Review Effort,Including Description of Program,Review Methods,Findings & Corrective Actions,By 880520
Project stage: Other
ML13330B3151988-05-27027 May 1988
Forwards Info to Resolve Discrepancies Identified During Review of Environ Qualification Master List,Including Results of Review of 10CFR50.49b(1) & (2) Equipment.Cables, Including Cables Traversed in Harsh Environs Also Reviewed
Project stage: Other
ML13316B9161988-06-10010 June 1988
Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $150,000.Noncompliance Noted:Listed Electric Components,Required to Be Qualified Per 10CFR50.49(b) Not Included in Master List of Qualified Equipment
Project stage: Other
ML13330B3431988-06-16016 June 1988
Responds to 880527 near-final Results of Environ Qualification of Electrical Equipment Review.Subj to Successful Completion of Cable walk-downs & Actions Described in Ltr,Returning to Svc Acceptable
Project stage: Other
ML13330B3481988-07-0909 July 1988
Forwards Update of Progress Made Re Environ Qualification Program at Facility.List of 10CFR50.49 b(1) Equipment & Corrective Actions Encl
Project stage: Other
ML13316B9201988-07-11011 July 1988
Responds to NRC Re Violations Noted in Insp Rept 50-206/88-10 & Proposed Imposition of Civil Penalty. Corrective Actions:Task Force Established to Ensure Responsibility for Engineering & Technical Work.Fee Paid
Project stage: Other
ML13331B0581988-07-19019 July 1988
Advises That Calculation CAW-87-130 Will Be Withheld from Public Disclosure Per 10CFR2.790(b)(5) & Section 103(b) of Atomic Energy Act of 1954,per 871209 Request
Project stage: Other
ML13336A0991988-07-27027 July 1988
Confirms Discussions on Closeout of Event 10237 Re Newly Discovered ESF Single Failure Vulnerability Reported on 871007.Final Review of Longer Term Corrective Action Being Conducted Under Tac 66624
Project stage: Approval
ML13330B3661988-07-29029 July 1988
Advises That NRC Reviewed Util Two Justifications for Operation & Agrees W/Determination of Operability,Per Generic Ltr 88-07,per Updating Results of re-review of Environ Qualification of Electrical Equipment
Project stage: Approval
ML13316A0231988-08-0101 August 1988
Ack Receipt of & Payment of Civil Penalty in Amount of $150,000
Project stage: Other
1988-03-11
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Text
December 11, 1987 Docket No. 50-206 DISTRIBUTION Docket File NRC & Local PDRs Mr. Kenneth P. Baskin, Vice President GKnighton Southern California Edison Company PDV Reading 2244 Walnut Grove Avenue DHickman P.O. Box 800 JLee Rosemead, California 91770 HRood
SUBJECT:
SAN ONOFRE 1:
SAFETY EVALUATION FOR ENGINEERED SAFETY FEATURES SINGLE FAILURE ANALYSES (TAC NO. 66405)
Dear Mr. Baskin:
During our meeting on October 9, 1987, SCE identified single electrical failure scenarios, each of which could prevent the Engineered Safety Features (ESFs) performing their designed safety function required during postulated design basis transients and accidents. In this meeting, you described correct ive actions being taken to ensure continued operation of the ESFs for all the identified single failure scenarios. By letter dated October 16, 1987, you submitted the single failure analysis of the ESF presented during the meeting.
This analysis used a moderator temperature coefficient (MTC) which is valid until December 14, 1987. The staff reviewed this submittal and accepted your justification for continued operation until December 14, 1987.
By letters dated December 1, 8 and 9, 1987, SCE provided analyses justifying operation of San Onofre Unit 1 for the remainder of the current operating cycle. The NRC staff has evaluated this information and has concluded that your justification for operation for the remainder of the current cycle is acceptable.
The staff's Safety Evaluation is enclosed. If you have questions, please contact me.
Sincerely, George W. Knighton, Director Project Directorate V Division of Reactor Projects -
III, IV, V and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc: See next page DRS P/DV DRSP/AD:PDV DHickman lannr- =/
12/J1//87 12////87 6712160258 871211 PDR ADOCK 05000206 P
PDR
Mr. Kenneth P. Baskin San Onofre Nuclear Generating Southern California Edison Company Station, Unit No. 1 cc Charles R. Kocher, Assistant Mr. Joseph 0. Ward, Chief General Counsel Radiological Health Branch James Beoletto, Esquire State Department of Health Southern California Edison Company Services Post Office Box 800 714 P Street, Office Bldg. 8 Rosemead, California 91770 Sacramento, California 95814 David R. Pigott Mr. Hans Kaspar, Executive Director Orrick, Herrington & Sutcliffe Marine Review Committee, Inc.
600 Montgomery Street 531 Encinitas Boulevard, Suite 105 San Francisco, California 94111 Encinitas, California 92024 Mr. Stephen B. Allman Dennis M. Smith, Chief San Diego Gas & Electric Company Radiological Programs Division P. 0. Box 1831 Governor's Office of Emergency Svcs.
San Diego, California. 92112 State of California 2800 Meadowview Road Sacramento, CA 95832 Resident Inspector/San Onofre NPS c/o U.S. NRC P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 Director Energy Facilities Siting Division Energy Resources Conservation &
Development Commission 1516 - 9th Street Sacramento, California 95814 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane Walnut Creek, California 94596
