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Results
Other: 05000206/LER-1988-009, :on 880526,potential Diesel Loads in Excess of Regulatory Commitments.Caused by Calculation Errors & Inadequate Understanding of Loads on Diesel Generator. Personnel Trained in Proper Methodology, 05000206/LER-1988-009-01, :on 880526,determined That Max Electrical Load Imposed on Diesel Generators in Excess of Tech Spec 4.4 Limit.Cause Under Investigation.Members Involved Have Reviewed Event & Received Training, ML13316A938, ML13316B046, ML13322A027, ML13322A030, ML13324A861, ML13330B319, ML13330B351, ML13330B354, ML13330B356, ML13331B056, ML13331B057
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MONTHYEARML13324A8611986-05-19019 May 1986 Forwards Results of Insps Performed on Emergency Diesel Generator 1 on Nov 1985 - Feb 1986,per Tdi Diesel Generator Owners Group Feb 1985 Rept Recommendation.Rept on Emergency Diesel Generator 2 Will Be Submitted by 860613 Project stage: Other ML13316A9351986-07-0303 July 1986 Forwards Amend 95 to License DPR-13 & Safety Evaluation. Amend Modifies Tech Specs to Incorporate Load Limitations for Emergency Diesel Engine Testing & Monthly Surveillance Test Conditions Project stage: Approval ML13316A9381986-07-0303 July 1986 Amend 95 to License DPR-13,modifying Tech Specs to Incorporate Load Limitations for Emergency Diesel Engine Testing & Monthly Surveillance Test Conditions Project stage: Other ML13316A9391986-07-0303 July 1986 Safety Evaluation Supporting Amend 95 to License DPR-13 Project stage: Approval ML13330B3191988-05-27027 May 1988 Forwards Sixth Edition of Integrated Implementation Schedule (Iis) Per License Condition 3.J,providing Update on Changes & Progress Re Mods Scheduled for Cycle X.Schedule Rev for Cycle XI & Later Outages Planned for Next IIs Edition Project stage: Other ML13322A0271988-06-17017 June 1988 Rev 2 to Design Calculation for Emergency Diesel Generators Loading DC 1809 Project stage: Other IR 05000206/19880131988-06-22022 June 1988 Insp Repts 50-206/88-13,50-361/88-11 & 50-362/88-11 on 880410-0521.No Violations Noted.Major Areas Inspected: Operational Safety Verification,Evaluation of Plant Trips & Events & Monthly Surveillance & Maint Activities Project stage: Request 05000206/LER-1988-009-01, :on 880526,determined That Max Electrical Load Imposed on Diesel Generators in Excess of Tech Spec 4.4 Limit.Cause Under Investigation.Members Involved Have Reviewed Event & Received Training1988-06-27027 June 1988
- on 880526,determined That Max Electrical Load Imposed on Diesel Generators in Excess of Tech Spec 4.4 Limit.Cause Under Investigation.Members Involved Have Reviewed Event & Received Training
Project stage: Other ML13330B3511988-07-15015 July 1988 Forwards Design Calculation for Emergency Diesel Generator Loading DC-1809,Rev 2 & Do Harris Project stage: Other ML13331B0571988-07-19019 July 1988 Forwards Evaluation of Motors Operating in Overload Condition Committed to in in Support of NRC Review of Amend Application 153 Project stage: Other ML13330B3541988-07-21021 July 1988 Forwards Westinghouse Rept 88-13, Charging Pump Motor Overload Evaluation. Rept Concludes That These Motors Will Perform Satisfactorily Under Accident Conditions Project stage: Other ML13316B0461988-07-22022 July 1988 Amend 104 to License DPR-13,approving Diesel Generator Rating of 5,250 Kw for Both Generators Until Next Refueling Outage Provided That Main Journal Bearings Inspected Prior to Plant Operation & Found to Be Free of Cracks Project stage: Other ML13316B0481988-07-22022 July 1988 Safety Evaluation Supporting Amend 104 to License DPR-13 Project stage: Approval ML13331B0561988-07-22022 July 1988 Addresses Util Plans for Long Term Resolution of Concern Re Operation of Charging Pump Motors in Overload Condition During post-accident Operation & Justification for Continued Operation,Per NRC Review of Amend Application 153 Project stage: Other ML13316B0431988-07-22022 July 1988 Forwards Amend 104 to License DPR-13 & Safety Evaluation. Amend Approves Diesel Generator Rating of 5,250 Kw for Both Generators Until Next Refueling Outage Provided Main Journal Bearings Inspected Prior to Plant Operation Project stage: Approval ML13336A1021988-07-27027 July 1988 Summary of 880711 Meeting W/Util Re Uprate of Emergency Diesel Generators from 4,500 to 5,250 Kw,Per Util Insp of Generators.List of Attendees & Figures Encl Project stage: Meeting ML13322A0301988-07-31031 July 1988 Influence of Reduced Peak Firing Pressure on Fatigue Performance of Modified-AF Piston Skirts at San Onofre,Unit 1 Project stage: Other ML13330B3561988-07-31031 July 1988 Charging Pump Motor Overload Evaluation Project stage: Other 05000206/LER-1988-009, :on 880526,potential Diesel Loads in Excess of Regulatory Commitments.Caused by Calculation Errors & Inadequate Understanding of Loads on Diesel Generator. Personnel Trained in Proper Methodology1988-11-0303 November 1988
- on 880526,potential Diesel Loads in Excess of Regulatory Commitments.Caused by Calculation Errors & Inadequate Understanding of Loads on Diesel Generator. Personnel Trained in Proper Methodology
Project stage: Other 1988-06-27
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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 July 21, 1988 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:
Subject:
Supplement to Amendment Application No. 153 Docket No. 50-206 San Onofre Nuclear Generating Station Unit 1 By letter dated July 19, 1988 SCE provided information in support of the NRC's review of Amendment Application No. 153. Specifically, this information addressed overload conditions associated with the feedwater and charging pump motors during post-accident conditions. Provided as an enclosure to this letter is an evaluation prepared by Westinghouse Electric Corporation which addresses the effect of overload operation of the charging pump motors. The conclusion of this evaluation is that these motors will perform satisfactorily under accident conditions.
If you have any questions regarding this information, please contact me.
Very truly yours, Enclosure cc: J. B. Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3 880725o276 880721 PDR ADOCK 05000206 P
PDC