| | Site | Start date | Title |
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| 05000328/LER-2020-001, Ice Bed Inoperable Due to Exceeding Maximum Allowed Ice Bed Temperature | Sequoyah | 16 September 2020 | Ice Bed Inoperable Due to Exceeding Maximum Allowed Ice Bed Temperature |
| 05000482/LER-1997-008, :on 970520,manual Reactor Trip Occurred,Due to Steam Leak in non-safety Related Third Stage Extraction Steam Isolation Valve.Caused by Lack of Guidance.Engineering Disposition to EER Will Be Revised by 970620 | Wolf Creek | 19 June 1997 |
- on 970520,manual Reactor Trip Occurred,Due to Steam Leak in non-safety Related Third Stage Extraction Steam Isolation Valve.Caused by Lack of Guidance.Engineering Disposition to EER Will Be Revised by 970620
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| 05000370/LER-1989-010, :on 890905,leak Occurred on Containment Spray HX 2A After Valve Stroke Timing Because of Deficient Procedure & Inappropriate Action.C/A 6 Being Replaced W/C/A 7 Due to Reorganization at Facility | Mcguire | 23 October 1989 |
- on 890905,leak Occurred on Containment Spray HX 2A After Valve Stroke Timing Because of Deficient Procedure & Inappropriate Action.C/A 6 Being Replaced W/C/A 7 Due to Reorganization at Facility
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| 05000370/LER-1989-010-01, :on 890905,leak Occurred on Containment Spray HX 2A After Valve Stroke Timing.Caused by Defective Procedure Due to Incomplete & Ambiguous Info.Gasket Replaced & Piping Analyzed & Returned to Svc | Mcguire | 23 October 1989 |
- on 890905,leak Occurred on Containment Spray HX 2A After Valve Stroke Timing.Caused by Defective Procedure Due to Incomplete & Ambiguous Info.Gasket Replaced & Piping Analyzed & Returned to Svc
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| 05000265/LER-1986-014, :on 861012,while Performing Refuel Outage Local Leak Rate Testing,Measured Combined Leakage for Penetrations & Valves,Except Msivs,Found to Be in Excess of Tech Spec Limit.Caused by Wear or Design Deficiency | Quad Cities | 10 June 1987 |
- on 861012,while Performing Refuel Outage Local Leak Rate Testing,Measured Combined Leakage for Penetrations & Valves,Except Msivs,Found to Be in Excess of Tech Spec Limit.Caused by Wear or Design Deficiency
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| 05000265/LER-1986-015-08, :on 861013,leakage from Containment Exceeded 75% of La Required by Tech Spec 3.7.A.2.b.Caused by Reduced Resiliency of Silicon Rubber Mfg by J-Bar Silicon Corp. Silicon Rubber Replaced | Quad Cities | 6 November 1986 |
- on 861013,leakage from Containment Exceeded 75% of La Required by Tech Spec 3.7.A.2.b.Caused by Reduced Resiliency of Silicon Rubber Mfg by J-Bar Silicon Corp. Silicon Rubber Replaced
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| 05000254/LER-1986-001, Responds to NRC Re Violations Noted in Insp Repts 50-254/86-06 & 50-265/86-06.Corrective Actions:Response to Repetitive Local Leak Rate Failures Provided in Encl Rev 1 to LER 86-001 | Quad Cities | 24 July 1986 | Responds to NRC Re Violations Noted in Insp Repts 50-254/86-06 & 50-265/86-06.Corrective Actions:Response to Repetitive Local Leak Rate Failures Provided in Encl Rev 1 to LER 86-001 |
| 05000331/LER-1986-011, :on 860401,during Scheduled Maint Outage,Main Steam Line Isolation Valve Hung Up in Partially Open Position.Caused by Metallurgical Flaw in Stellite on Junk Ring.Galling Removed from Ring & Valve | Duane Arnold | 1 May 1986 |
- on 860401,during Scheduled Maint Outage,Main Steam Line Isolation Valve Hung Up in Partially Open Position.Caused by Metallurgical Flaw in Stellite on Junk Ring.Galling Removed from Ring & Valve
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| 05000277/LER-1982-001-03, /03L-0:on 820123,during Startup,Local Leak Rate Test of Drywell Airlock Revealed Excess Leakage.Caused by Damaged Garlock Door Gaskets.Gaskets Replaced & Leak Rate Tested | Peach Bottom | 23 February 1982 | /03L-0:on 820123,during Startup,Local Leak Rate Test of Drywell Airlock Revealed Excess Leakage.Caused by Damaged Garlock Door Gaskets.Gaskets Replaced & Leak Rate Tested |
| 05000278/LER-1976-040-03, /03L,drywell Air Lock Inner Door Had Unacceptable Leakage.Caused by Oversize Gasket.Gasket Replaced & Tested Satisfactorily | Peach Bottom | 27 May 1976 | /03L,drywell Air Lock Inner Door Had Unacceptable Leakage.Caused by Oversize Gasket.Gasket Replaced & Tested Satisfactorily |
| 05000278/LER-1976-027-03, /03L:on 760224,drywell Air Lock Inner Door Found to Have Unacceptable Leak.Caused by Permanent Set in Gasket Due to Normal use-related Aging.Gasket Replaced & Packing Glands on Manual Door Operator Shaft Tightened | Peach Bottom | 25 March 1976 | /03L:on 760224,drywell Air Lock Inner Door Found to Have Unacceptable Leak.Caused by Permanent Set in Gasket Due to Normal use-related Aging.Gasket Replaced & Packing Glands on Manual Door Operator Shaft Tightened |