/03L-0 on 780819:during an Investigation of a DC Ground,Leads Were Being Lifted on the Indication Circuit of the East Feedwater Pump Safety Injection Valve (HV-853A). (Encl to 7809210176)ML20147A867 |
Person / Time |
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Site: |
San Onofre ![Southern California Edison icon.png](/w/images/2/2a/Southern_California_Edison_icon.png) |
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Issue date: |
09/07/1978 |
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From: |
Curran J SOUTHERN CALIFORNIA EDISON CO. |
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To: |
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References |
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LER-78-010-03L-0, LER-78-10-3L, NUDOCS 7809210178 |
Download: ML20147A867 (1) |
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Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEAR05000361/LER-1993-0051993-09-0707 September 1993 LER 93-005-00:on 930810,identified Improper Configuration of Units 2 & 3 MSIV Enclosure Blowout Panels Due to Inadequate MP for Installation.Restored Blowout Panels to Operability on 920930.W/930907 Ltr 05000361/LER-1993-0041993-09-0101 September 1993 LER 93-004-00:on 930802,portions of Shift Surveillance Not Performed.Caused by Personnel Error.Plant Operators Counseled on procedures.W/930901 Ltr 05000361/LER-1990-011, Corrected LER 90-011-01:on 900722,AFW Bypass Control Valve 3HV-4763 Declared Inoperable After Failing to Close Due to Mechanical Failure of Solenoid Valve.Valve Manually Isolated & Solenoid Valve Replaced1992-12-0404 December 1992 Corrected LER 90-011-01:on 900722,AFW Bypass Control Valve 3HV-4763 Declared Inoperable After Failing to Close Due to Mechanical Failure of Solenoid Valve.Valve Manually Isolated & Solenoid Valve Replaced 05000361/LER-1984-009, Revised LER 84-009-01:on 840214,analysis of Startup Test Data for Units 2 & 3 Established That Calculated Thermal Power May Become Decalibr Relative to Secondary Calometric Power.Procedure S023-5-1 Revised1984-07-23023 July 1984 Revised LER 84-009-01:on 840214,analysis of Startup Test Data for Units 2 & 3 Established That Calculated Thermal Power May Become Decalibr Relative to Secondary Calometric Power.Procedure S023-5-1 Revised 05000362/LER-1983-097, Revised LER 83-097/03L-1:on 831029 & 30,control Element Assembly (CEA) 57 Dropped More than 19 Inches & CEA 61 Dropped More than 19 Inches on 831101.Caused by Sluggishness of CEA Grippers1984-01-20020 January 1984 Revised LER 83-097/03L-1:on 831029 & 30,control Element Assembly (CEA) 57 Dropped More than 19 Inches & CEA 61 Dropped More than 19 Inches on 831101.Caused by Sluggishness of CEA Grippers 05000362/LER-1983-073, /03L-0:on 830929,boronmeter 3AE0203 Rendered Inoperable When Manual Isolation Valves S31208MU084 & S31208MU091 Closed.Caused by Improper Sys Lineup.Corrective Actions Described in LER 83-073/03L-01983-10-27027 October 1983 /03L-0:on 830929,boronmeter 3AE0203 Rendered Inoperable When Manual Isolation Valves S31208MU084 & S31208MU091 Closed.Caused by Improper Sys Lineup.Corrective Actions Described in LER 83-073/03L-0 05000362/LER-1983-065, Corrected LER 83-065/03L-0:on 830905 & 12,high-range in-containment Radiation Monitor 3RI-7820-1 Declared Inoperable After Discovery in Failed Low Condition.Caused by Faulty Electrical Cable Penetration Path1983-10-0505 October 1983 Corrected LER 83-065/03L-0:on 830905 & 12,high-range in-containment Radiation Monitor 3RI-7820-1 Declared Inoperable After Discovery in Failed Low Condition.Caused by Faulty Electrical Cable Penetration Path 05000361/LER-1982-103, Followup LER 82-103/03X-2:on 820825,sample Isolation Valve 2HV-0517 Hot Leg Breaker 2BJ-23 Tripped on Overload While Attempting to Close Valve.Caused by burned-out Motor on Operator.Motor Replaced.Procedures Revised1983-03-30030 March 1983 Followup LER 82-103/03X-2:on 820825,sample Isolation Valve 2HV-0517 Hot Leg Breaker 2BJ-23 Tripped on Overload While Attempting to Close Valve.Caused by burned-out Motor on Operator.Motor Replaced.Procedures Revised 05000361/LER-1982-094, Followup LER 82-094/03X-2:on 820808,stroke Time for Isolation Valve 2HV-0517 Hot Leg Could Not Be Measured Due to Simultaneous Open & Closed Position Indications.Caused by Loosening of Limit Switch Due to Vibration.Switch Adjus1983-03-30030 March 1983 Followup LER 82-094/03X-2:on 820808,stroke Time for Isolation Valve 2HV-0517 Hot Leg Could Not Be Measured Due to Simultaneous Open & Closed Position Indications.Caused by Loosening of Limit Switch Due to Vibration.Switch Adjusted 05000361/LER-1982-0241982-06-23023 June 1982 LER 82-024/01T-0:on 820606,w/discharge Valve 2HV4713 Inoperable Rendering Flowpath for Motor Driven Auxiliary Feedwater Pump 2P-141 Inoperable,Plant Entered Mode 3. Investigation Re Cause of Oversight Continuing 05000361/LER-1982-0251982-06-23023 June 1982 LER 82-025/01T-0:on 820609,steam Driven Auxiliary Feedwater Pump 2P-140 Declared Inoperable.Impact of Outstanding Work Order Affecting Pump Not Recognized by Operating Personnel. Investigation Re Cause of Oversight Continuing 05000361/LER-1982-0091982-04-12012 April 1982 LER 82-009/01T-0:on 820325,Bechtel Informed Util of Location of Lumigraph Indicators Model 9270 Mfg W/Incorrect Resistors in Indicator Circuits.Caused by Improper Design of Indicator Circuits.Resistors to Be Replaced Prior to Full Power 05000361/LER-1982-0051982-04-0808 April 1982 LER 82-005/03L-0:on 820309,control Room Emergency Air Cleanup Sys Failed to Start Upon Receiving Spurious Toxic Gas Isolation Signal.Caused by Incorrect Positioning of Kirk Key.Caution Notes Incorporated Into Procedures 05000361/LER-1982-0041982-04-0707 April 1982 LER 82-004/03L-0:on 820308,containment Purge Isolation Sys (Cpis) Operability Found Not Demonstrated Per Tech Spec 4.99.Caused by Return of Purge Valves to Svc After Valve Seat Cleaning W/O Verifying Cpis Operability 05000361/LER-1982-0071982-04-0707 April 1982 LER 82-007/03L-0:on 820303,cable Riser Shaft Water Spray Fire Protection Sys Inadvertently Activated & Fire Retardant Barrier Matl Damaged by Water.Caused by Personnel Communication Failure During Maint ML20147A8671978-09-0707 September 1978 /03L-0 on 780819:during an Investigation of a DC Ground,Leads Were Being Lifted on the Indication Circuit of the East Feedwater Pump Safety Injection Valve (HV-853A). (Encl to 7809210176) ML20147A7121978-08-29029 August 1978 /03L on 780817:During Normal Oper,Feedwater Flow Meter Increased Suddenly in Indication,Resulting in a Loss of One Channel of the Steam Flow/Feedflow Mismatch Trip. Caused by Disloged Flow Straightener. (Encl to 7809080050) 1993-09-07
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217E3381999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Songs,Units 2 & 3 ML20212A1471999-09-13013 September 1999 Special Rept:On 990904,condenser Monitor Was Declared Inoperable.Difficulties Encountered During Component Replacement Precluded SCE from Restoring Monitor to Service within 72 H.Alternate Method of Monitoring Was Established ML20211N0511999-09-0303 September 1999 SER Approving Exemption from Certain Requirements of 10CFR50.44 & 10CFR50 App A,General Design Criterion 41 to Remove Requirements from Hydrogen Control Systems from SONGS Units 2 & 3 Design Basis ML20211Q8201999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Songs,Units 2 & 3. with ML20211H8621999-08-23023 August 1999 Safety Evaluation Accepting Licensee Requests for Relief RR-E-2-03 - RR-E-2-08 from Exam Requirements of Applicable ASME Code,Section Xi,For First Containment ISI Interval ML20210P4791999-08-11011 August 1999 COLR Cycle 10 Songs,Unit 3 ML20210P4731999-08-11011 August 1999 COLR Cycle 10 Songs,Unit 2 ML20210Q6521999-07-31031 July 1999 Monthly Operating Repts for July 1999 for Songs,Units 2 & 3 ML20210L2771999-07-30030 July 1999 SONGS Unit 3 ISI Summary Rept 2nd Interval,2nd Period Cycle 10 Refueling Outage U3C10 Site Technical Services ML20209C9281999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Songs,Units 2 & 3. with ML20195D3061999-06-0202 June 1999 Safety Evaluation of TR SCE-9801-P, Reload Analysis Methodology for San Onofre Nuclear Generating Station,Units 2 & 3. Rept Acceptable ML20195H5491999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Songs,Units 2 & 3 ML20196L3221999-05-11011 May 1999 SONGS Unit 2 ISI Summary Rept 2nd Interval,2nd Period Cycle-10 Refueling Outage ML20206H2611999-05-0505 May 1999 Part 21 Rept Re Defect Found in Potter & Brumfield Relays. Sixteen Relays Supplied in Lot 913501 by Vendor as Commercial Grade Items.Caused by Insufficient Contact Pad Welding.Relays Replaced with New Relays ML20206S7281999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Songs,Units 2 & 3 ML20205Q6221999-04-19019 April 1999 Safety Evaluation Authorizing Proposed Alternative to Use Wire Penetrameters for ISI Radiography in Place of ASME Code Requirement ML20205R0371999-04-16016 April 1999 SER Approving Proposed Deviation from Approved Fire Protection Program Incorporating Technical Requirements of 10CFR50,App R,Section III.0 That Applies to RCP Oil Fill Piping ML20205G2611999-04-0101 April 1999 Special Rept:On 990328,3RT-7865 Was Removed from Service. Monitor Is Scheduled to Be Returned to Service Prior to Mode 4 Entry (Early May 1999) Which Will Exceed 72 H Allowed by LCS 3.3.102.Alternate Method of Monitoring Will Be Used ML20205Q0981999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Songs,Units 2 & 3 ML20204F8101999-02-28028 February 1999 Monthly Operating Repts for Songs,Units 2 & 3.With ML20203J1981999-02-12012 February 1999 Safety Evaluation Supporting Amends 149 & 141 to Licenses NPF-10 & NPF-15,respectively ML20202F7041999-01-21021 January 1999 Special Rept:On 990106,SCE Began to Modify 2RT-7865.2RT-7865 to Allow Monitor to Provide Input to New Radiation Monitoring Data Acquisition Sys.Monitor Found to Exceeds 72 H Allowed Bt LCS 3.3.102.Alternate Monitoring Established ML20199F0771998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Songs,Units 2 & 3 ML20206H2101998-12-31031 December 1998 SCE 1998 Annual Rept ML20198A6731998-12-11011 December 1998 Special Rept:On 981124,meteorological Sys Wind Direction Sensor Was Observed to Be Inoperable.Caused by Loss of Communication from Tower to Cr.Sensor Was Replaced & Sys Was Declared Operable on 981204 ML20196D8901998-11-30030 November 1998 Non-proprietary Reload Analysis Methodology for Songs,Units 2 & 3 ML20198C3471998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Songs,Units 2 & 3 ML20195H2471998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Songs,Units 2 & 3 ML20154B7211998-10-0101 October 1998 Safety Evaluation Approving Licensee Request to Implement Alternatives Contained in Code Case N-546 for Current Interval at Songs,Units 2 & 3 Until Code Case Approved by Ref in Reg Guide 1.147 ML20154M7921998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Songs,Units 2 & 3 ML20155F6081998-09-17017 September 1998 Non-proprietary Version of San Onofre 2 & 3 Replacement LP Rotors ML20151Z9851998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Songs,Units 2 & 3 ML20151Q1211998-08-14014 August 1998 Rev 0 to Control of Hazard Barriers ML18066A2771998-08-13013 August 1998 Part 21 Rept Re Deficiency in CE Current Screening Methodology for Determining Limiting Fuel Assembly for Detailed PWR thermal-hydraulic Sa.Evaluations Were Performed for Affected Plants to Determine Effect of Deficiency ML20198G4491998-07-31031 July 1998 Rev 1 to WCAP-15015, Specific Application of Laser Welded Sleeves for SCE San Onofre Units 2 & 3 Sgs ML20237B8571998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Songs,Units 2 & 3 ML20236N3871998-07-0909 July 1998 Part 21 Rept Re Deficiency Identified in Event 32725, Corrected by Mgp Instruments Inc.Licensee Verified,Affected Equipment Has Been Reworked & Tested at Sce.Design Mod Completed ML20236R1031998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Songs,Units 2 & 3 ML20249A9431998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Songs,Units 2 & 3 ML20248B8981998-05-26026 May 1998 Updated SG Run Time Analysis Cycle 9 ML20248B9221998-04-30030 April 1998 Rev 0 to AES 98033327-1-1, Updated Probabilistic Operational Assessment for SONGS Unit 2,Second Mid Cycle Operating Period,Cycle 9 ML20247L5181998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Songs,Units 2 & 3 05000361/LER-1998-003, LOCA Evaluation of Safety Significance of Failure of Emergency Sump Valve Linestarter (LER 1998-003)1998-04-0606 April 1998 LOCA Evaluation of Safety Significance of Failure of Emergency Sump Valve Linestarter (LER 1998-003) ML20217Q6161998-04-0505 April 1998 Failure Analysis Rept 98-005,Failure Analysis of 2HV9305 Motor Starter ML20217A0141998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Songs,Units 2 & 3 ML20217D4701998-03-0202 March 1998 Rev 1 to 90459, Failure Modes & Effects Analysis DG Cross- Tie,DCP7048.00SE ML20216J3551998-02-28028 February 1998 Monthly Operating Repts for Feb 1998 for Songs,Units 2 & 3 ML20203E7301998-02-17017 February 1998 SER Accepting 980105 Request to Use Mechanical Nozzle Seal Assembly as Alternate Repair Method,Per 10CFR50.55a(a)(3)(1) for Plant,Units 2 & 3 ML20203K9141998-02-0303 February 1998 Rev 0 to ESFAS Radiation Monitor Single Failure Analysis. W/96 Foldout Drawings ML20202F9731998-01-31031 January 1998 Monthly Operating Repts for Jan 1998 for Songs,Units 2 & 3 1999-09-30
[Table view] |
Text
U. S. NUCLE AR REGULATORY COMMISSloN AFjC FQPM s 366 (7-77 F LICENSEE EVENT REPORT CONTROL 9 LOCK; l I (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)
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7 8 60 61 DOCKET NUMBE R 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h
- o i 2, l During an investigation of a DC ground, leads were being lifted on the indication 1 g g i 3, ;
circuit of the East Feedwater Pump Safety Injection Valve (HV-853A). An error was l
- g i,i ;
made which caused the valve to open and allowed condensate to flow into the refueling ig igi ,
water storage tank. The valve was closed and the east feedwater pump stopped. l Boron concentration in the Refueling Water Storage Tank remained above the Technical I l 0 l6 ] l
- o i, ; Specification limit. l 1
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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h
- i ;o i l Solenoid valve 83-4 on HV-853A was inadvertently energized while the light indicationi i, i, i ;
lead on the same circuit was lifted. SV 83-4 completes an open 3ignal to the valve l
,,,,,g and the valve operated as designed to the safety-related position. This incident l
,,i3; l will be reviewed by appropriate station personnel. I l
l i 141 l
, eo a 9 STA 5 % POWEn OTHER ST ATUS SC F DISCOVEHY DESCHIPTION Ii I5 l l El@ l 0 l 9 l 1 l@l NA l l A l@l Operator observation l A 11 Vil y CC TENT REL E ASED OF RE LE ASE AMOUNT OF ACllVITY LOC AllON OF RE LE ASE NA l l NA l li/ Ic Bi lZ 9 l @ l 10Z l@l il 44 4L 80 PERSONNE L E XPOSURES NUMP.ER TYPE Df 5CniPTION NA l li 17 l l0 l0 l0 l@l Zl@l" *
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NAME OF PREPAHER PHONE: