/03L-0:on 780814,core Spray Time Delay Relay Did Not Operate within Required Time Frame.Caused by Type of Relay Used & Inactivity After Repairs.Design Change Will Be Prepared to Replace Relay| ML20148A673 |
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| Site: |
Cooper  |
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| Issue date: |
09/12/1978 |
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| From: |
Phillips D NEBRASKA PUBLIC POWER DISTRICT |
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| To: |
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| Shared Package |
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| ML20148A574 |
List: |
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| References |
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| LER-78-029-03L, LER-78-29-3L, NUDOCS 7810300229 |
| Download: ML20148A673 (1) |
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LER-1978-029, /03L-0:on 780814,core Spray Time Delay Relay Did Not Operate within Required Time Frame.Caused by Type of Relay Used & Inactivity After Repairs.Design Change Will Be Prepared to Replace Relay |
| Event date: |
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| Report date: |
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| 2981978029R03 - NRC Website |
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text
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H 60 bl DOCK l T NUMBE R UH 69 EVENT DATE 14 15 HE POH T D AT E 80 LVENI DESCHIPTION AND PROBABLE CONSEQUENCES lo12] lDuring routine Surveillance test 6.2.2.4.2. Core Snray Time Delay Relay CS-TDR-K16B l
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a j o j a j [been one previous event of this nature, LER No. 77-15.
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| 05000298/LER-1978-029-03, /03L-0:on 780814,core Spray Time Delay Relay Did Not Operate within Required Time Frame.Caused by Type of Relay Used & Inactivity After Repairs.Design Change Will Be Prepared to Replace Relay | /03L-0:on 780814,core Spray Time Delay Relay Did Not Operate within Required Time Frame.Caused by Type of Relay Used & Inactivity After Repairs.Design Change Will Be Prepared to Replace Relay | | | 05000298/LER-1978-029, Forwards LER 78-029/03L-0 | Forwards LER 78-029/03L-0 | | | 05000298/LER-1978-030-03, /03L-0:on 780815,13 Primary Containment Penetrations Not Leak Tested.Caused by Penetrations Not Identified During Preoperational Testing.Penetrations Will Be Added to Tech Spec Table 3.7.2 & Will Be Tested | /03L-0:on 780815,13 Primary Containment Penetrations Not Leak Tested.Caused by Penetrations Not Identified During Preoperational Testing.Penetrations Will Be Added to Tech Spec Table 3.7.2 & Will Be Tested | | | 05000298/LER-1978-030, Forwards LER 78-030/03L-0 | Forwards LER 78-030/03L-0 | | | 05000298/LER-1978-031-03, /03L-0 on 780912:Cooper-Bessemer Diesel Engine Type KSV-16-T Main Bearing Overheated.Main Bearing 10 Was Damaged Due to Minimal Oil Flow During Engine Coastdown. Caused by Foreign Particles in Oil | /03L-0 on 780912:Cooper-Bessemer Diesel Engine Type KSV-16-T Main Bearing Overheated.Main Bearing 10 Was Damaged Due to Minimal Oil Flow During Engine Coastdown. Caused by Foreign Particles in Oil | | | 05000298/LER-1978-031, Forwards LER 78-031/03L-0 | Forwards LER 78-031/03L-0 | | | 05000298/LER-1978-032, Forwards LER 78-032/03L-0 | Forwards LER 78-032/03L-0 | | | 05000298/LER-1978-032-03, /03L-0 on 780918:during Normal Oper,After Cooling Down the Torus,Rhr Heat Exchanger 1B Bypass RHR-MO-66B Failed to Oper,Due to Loose Set Screw on Yoke of Limiterque SMB-3 Operator | /03L-0 on 780918:during Normal Oper,After Cooling Down the Torus,Rhr Heat Exchanger 1B Bypass RHR-MO-66B Failed to Oper,Due to Loose Set Screw on Yoke of Limiterque SMB-3 Operator | | | 05000298/LER-1978-033, Forwards LER 78-033/03L-0 | Forwards LER 78-033/03L-0 | | | 05000298/LER-1978-033-03, /03L-0 on 781016:cable HP58,Div 1,was Found Routed Thru Div 11 Riser Under Panel 9-3.Caused by Personnel Error During Constr.Redundant Sys Were Operable | /03L-0 on 781016:cable HP58,Div 1,was Found Routed Thru Div 11 Riser Under Panel 9-3.Caused by Personnel Error During Constr.Redundant Sys Were Operable | | | 05000298/LER-1978-034-03, /03L-0 on 781111:during S.P.6.4.1.2. (Withdrawn Control Rod Operability), Control Rod 30-31 Was Found Uncoupled from Its Control Rod Drive. Cause Cannot Be Determined Until Control Rod Drive Is Removed & Examined | /03L-0 on 781111:during S.P.6.4.1.2. (Withdrawn Control Rod Operability), Control Rod 30-31 Was Found Uncoupled from Its Control Rod Drive. Cause Cannot Be Determined Until Control Rod Drive Is Removed & Examined | | | 05000298/LER-1978-034, Forwards LER 78-034/03L-0 | Forwards LER 78-034/03L-0 | | | 05000298/LER-1978-035-01, /01T-0 on 781124:while Checking RR MG Set 1B Speed control,1 Amp fuse(F2) in Drive Amplifier Circuit Was Pulled Out & Checked.Caused Rapid Increase in Pwr Level,Tripping RR MG Set 1B | /01T-0 on 781124:while Checking RR MG Set 1B Speed control,1 Amp fuse(F2) in Drive Amplifier Circuit Was Pulled Out & Checked.Caused Rapid Increase in Pwr Level,Tripping RR MG Set 1B | | | 05000298/LER-1978-035, Forwards LER 78-035/01T-0 | Forwards LER 78-035/01T-0 | | | 05000298/LER-1978-036, Forwards LER 78-036/04T-0 | Forwards LER 78-036/04T-0 | | | 05000298/LER-1978-036-04, /04T-0 on 781212:discharge of Floor Drain Sample Tank Was Made W/O Effluent Monitoring Required by Tech Specs,Because Flushing Valve of Radwaste Effluent Monitor Was Inadvertently Left Open | /04T-0 on 781212:discharge of Floor Drain Sample Tank Was Made W/O Effluent Monitoring Required by Tech Specs,Because Flushing Valve of Radwaste Effluent Monitor Was Inadvertently Left Open | | | 05000298/LER-1978-037, Forwards LER 78-037/03L-0 | Forwards LER 78-037/03L-0 | | | 05000298/LER-1978-037-03, /03L-0 on 781201:during Normal Operation,Pressure Recorder PC-PR-512A Was Found Reading Full Scale & Declared Inoperable.Cause Was Isolated to a Bad Amplifier Circuit Board | /03L-0 on 781201:during Normal Operation,Pressure Recorder PC-PR-512A Was Found Reading Full Scale & Declared Inoperable.Cause Was Isolated to a Bad Amplifier Circuit Board | | | 05000298/LER-1978-038-03, /03L-0 on 781208:during Normal Operation,One Struthers Wells Cross Connect Valve Failed to Open During Surveillance Procedure.Caused by Mfg Error | /03L-0 on 781208:during Normal Operation,One Struthers Wells Cross Connect Valve Failed to Open During Surveillance Procedure.Caused by Mfg Error | | | 05000298/LER-1978-038, Forwards LER 78-038/03L-0 | Forwards LER 78-038/03L-0 | | | 05000298/LER-1978-039-03, /03L-0 on 781206:while Performing Surveillance Test After No 1 Diesel Generator Was Out of Svc for Maint,Diesel Engine Failed to Reach Full Speed.Caused by Reduced Air Pressure | /03L-0 on 781206:while Performing Surveillance Test After No 1 Diesel Generator Was Out of Svc for Maint,Diesel Engine Failed to Reach Full Speed.Caused by Reduced Air Pressure | | | 05000298/LER-1978-039, Forwards LER 78-039/03L-0 | Forwards LER 78-039/03L-0 | | | 05000298/LER-1978-040-03, /03L-0 on 781227:during Normal Operation,While Doing Special Test of Drywell Purging Techniques,Primary Containment Vent Valve PC-246AV Leaked Excessively & Was Inoperable Due to Incomplete Valve Closure.Valve Replaced | /03L-0 on 781227:during Normal Operation,While Doing Special Test of Drywell Purging Techniques,Primary Containment Vent Valve PC-246AV Leaked Excessively & Was Inoperable Due to Incomplete Valve Closure.Valve Replaced | |
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