:on 930219,discovered That Door to Emergency Airlock Vestibule Was Not Locked Since 930217.Caused by Insufficient Training.Personnel Trained & Sign Will Be Installed Near Door
Person / Time
ML20034H957
Site:	Davis Besse
Issue date:	03/19/1993
From:	Storz L, Turkal M TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AB-93-0009, AB-93-9, LER-93-001, LER-93-1, NP-33-93-01, NP-33-93-1, NUDOCS 9303220375
Download: ML20034H957 (6)
v • d • e

LER-1993-001, on 930219,discovered That Door to Emergency Airlock Vestibule Was Not Locked Since 930217.Caused by Insufficient Training.Personnel Trained & Sign Will Be Installed Near Door

Event date:
Report date:
3461993001R00 - NRC Website
v • d • e

text

Licensee Event Report

Davis Besse

70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 |

90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |

10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |

		Reporting criterion
05000346/LER-1993-001, :on 930219,discovered That Door to Emergency Airlock Vestibule Was Not Locked Since 930217.Caused by Insufficient Training.Personnel Trained & Sign Will Be Installed Near Door	on 930219,discovered That Door to Emergency Airlock Vestibule Was Not Locked Since 930217.Caused by Insufficient Training.Personnel Trained & Sign Will Be Installed Near Door
05000346/LER-1993-002, :on 930422,Mode 4 Entered W/Makeup Pump 1-1 Inoperable Due to Decision Not to Install Close Power Fuses for Breaker AC105.Close Power Fuses for Makeup Pump 1-1 Installed	on 930422,Mode 4 Entered W/Makeup Pump 1-1 Inoperable Due to Decision Not to Install Close Power Fuses for Breaker AC105.Close Power Fuses for Makeup Pump 1-1 Installed	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(1)
05000346/LER-1993-003, :on 930520,plant Experienced Trip from Approx & Continuity Between Fuse & Fuseholder Lost,Resulting in Loss of Selected RCS Average Temp Input to Ics.Faulty Fuse Cap & Fuse Replaced	on 930520,plant Experienced Trip from Approx & Continuity Between Fuse & Fuseholder Lost,Resulting in Loss of Selected RCS Average Temp Input to Ics.Faulty Fuse Cap & Fuse Replaced	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(viii) 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(B)
05000346/LER-1993-004, :on 930428,plant Entered Mode 2 W/Afw Pump Turbine Main Steam Line Crossover Check Valve MS735 in Open Position.Caused by Inappropriate Use of Engineering Judgement.Valve MS735 Closed	on 930428,plant Entered Mode 2 W/Afw Pump Turbine Main Steam Line Crossover Check Valve MS735 in Open Position.Caused by Inappropriate Use of Engineering Judgement.Valve MS735 Closed	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(1)
05000346/LER-1993-005, :on 931008,RT Occurred Due to CRD Trip Confirm Signal Caused by Degraded Power Supply in CRD Sys Logic Cabinet 1.Replaced Degraded Power Supply & CRD Logic Protection Circuit	on 931008,RT Occurred Due to CRD Trip Confirm Signal Caused by Degraded Power Supply in CRD Sys Logic Cabinet 1.Replaced Degraded Power Supply & CRD Logic Protection Circuit	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(viii)(A)
05000346/LER-1993-006, :on 931015,containment Air Cooler Svc Water Valves Missed Surveillance Due to Procedural Inadequacy. Entered Containment & Verified That CAC SW Inlet Valves Were in Correct Position	on 931015,containment Air Cooler Svc Water Valves Missed Surveillance Due to Procedural Inadequacy. Entered Containment & Verified That CAC SW Inlet Valves Were in Correct Position	10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(1)
05000346/LER-1993-007, :on 931020,after Preventive Maint,Determined Train of AFW & Motor Driven Feedwater Pump Incapable of Feeding SG 1 Should SG 2 Fail.Caused by Misunderstanding of AFW Sys.C/A:Review Chapter 15 of USAR	on 931020,after Preventive Maint,Determined Train of AFW & Motor Driven Feedwater Pump Incapable of Feeding SG 1 Should SG 2 Fail.Caused by Misunderstanding of AFW Sys.C/A:Review Chapter 15 of USAR	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A)
05000346/LER-1993-009, :on 931221,CREVS Train 2 Declared Inoperable & TS 3.0.3 Entered Due to Excessive Bearing Noise.Train 2 Fan Bearing & Train 1 Refrigerant Pressure Sensing Line Which Developed Leak on 931222 Repaired	on 931221,CREVS Train 2 Declared Inoperable & TS 3.0.3 Entered Due to Excessive Bearing Noise.Train 2 Fan Bearing & Train 1 Refrigerant Pressure Sensing Line Which Developed Leak on 931222 Repaired	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(1)

05000346/LER-1993-001, :on 930219,discovered That Door to Emergency Airlock Vestibule Was Not Locked Since 930217.Caused by Insufficient Training.Personnel Trained & Sign Will Be Installed Near Door

text

Navigation menu

Search