Letter Sequence Other |
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Results
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 Reviewed, ML13316A023, ML13316B916, ML13316B920, ML13324A480, ML13324A499, ML13324A563, ML13324A571, ML13330B267, ML13330B285, ML13330B289, ML13330B298, ML13330B309, ML13330B315, ML13330B343, ML13330B348
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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
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
ML13333A6321987-12-11011 December 1987
Safety Evaluation Supporting Util Justification for Interim Plant Operation Re ESF Single Failure Vulnerability
Project stage: Approval
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
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
1988-04-01
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Text
Southern California Edison Company P
- 0.
BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 M.O.MEDFORD TELEPHONE MANAGER OF NUCLEAR ENGINEERING (818) 302-1749 AND LICENSING April 26, 1988 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Environmental Qualification of Electrical Equipment San Onofre Nuclear Generating Station Unit 1 By letters dated March 30, 1988 and April 1, 1988 SCE indicated that a comprehensive program was being initiated to address the issue of 10 CFR 50.49(b)(2) equipment environmental qualification. Subsequent to submittal of those letters SCE has decided to perform this program on an accelerated schedule prior to Unit 1 restart. The program is expected to be complete by May 10, 1988.
The objective of the (b)(2) evaluation process is to identify and resolve potential electrical interactions between environmentally qualified (b)(1) equipment and non-qualified equipment located in a harsh environment.
Potential (b)(2) items are identified by first identifying all non-qualified equipment.connected to the electric power supply circuit for a qualified (b)(1) item. Potential (b)(2) items are defined as those items connected to the (b)(1) circuit which are located in a harsh post-accident environment and, whose failure could impact operation of the associated (b)(1) device(s) under postulated harsh accident conditions.
Once identified, such potential (b)(2) items will be resolved through an appropriate method of electrical isolation, to prevent impact on the (b)(1) function. Potential options may include fuse isolation, relocation of the (b)(2) device to another circuit or environmental qualification of the (b)(2) device,. - In order to verify the adequacy of both the existing and to-be-added isolation devices, a fuse-breaker coordination analysis will be performed.
This analysis will verify that the characteristics of any isolation device 8805030188 880426 7 PDR ADOCK 05000206 P
PDR I/o
Document Control Desk April 26, 1988 credited for (b)(2) isolation are such that failure of a (b)(2) device will not disrupt power to the associated (b)(1) equipment.
As stated in our prior correspondence on this subject, any (b)(2) interactions identified will be dispositioned in accordance with the NRC's regulations.
If you have any questions regarding this matter, please let me know.
Very truly yours, cc: 3. B. Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3
