| | | Reporting criterion |
|---|
| 05000255/LER-1983-001-01, /01T-0:on 830112,while Raising Boron Concentration in T-82B (B Safety Injection Tank),Tank Became Inoperable Due to Low Tank Level.Caused by High Tank Level & Leakage from Loop Check Valve | /01T-0:on 830112,while Raising Boron Concentration in T-82B (B Safety Injection Tank),Tank Became Inoperable Due to Low Tank Level.Caused by High Tank Level & Leakage from Loop Check Valve | |
| 05000255/LER-1983-001, Forwards LER 83-001/01T-0 | Forwards LER 83-001/01T-0 | |
| 05000255/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | |
| 05000255/LER-1983-002-03, /03L-0:on 821209,log Record Indicated T-102 Gas Pressure at 8.2 Psig,W/Another Occurrence of Low Pressure on 830119.Caused by Leak in Nitrogen Sys Supplying T-102.Search for Leak Initiated | /03L-0:on 821209,log Record Indicated T-102 Gas Pressure at 8.2 Psig,W/Another Occurrence of Low Pressure on 830119.Caused by Leak in Nitrogen Sys Supplying T-102.Search for Leak Initiated | |
| 05000255/LER-1983-003-03, /03L-0:on 830106,during Normal Operation,B Safety Injection Tank T-82B Reached Tech Spec Limit of 198 Inches. Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve Refill & Drain Valve.Valves Will Be Inspected | /03L-0:on 830106,during Normal Operation,B Safety Injection Tank T-82B Reached Tech Spec Limit of 198 Inches. Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve Refill & Drain Valve.Valves Will Be Inspected | |
| 05000255/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | |
| 05000255/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
| 05000255/LER-1983-004-03, /03L-0:on 830106,PCS Leak Rate Calculation Indicated Unidentified Leakage Exceeding Tech Spec.Caused by Improperly Seated CV-2056.Valve Cycled & Proper Seat Obtained | /03L-0:on 830106,PCS Leak Rate Calculation Indicated Unidentified Leakage Exceeding Tech Spec.Caused by Improperly Seated CV-2056.Valve Cycled & Proper Seat Obtained | |
| 05000255/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | |
| 05000255/LER-1983-005-03, /03L-0:on 830110,discrepancies Noted in 1981 Results for Snubber 63.Caused by Fluid Not Being Added Since 1981 Due to Deficiency in Surveillance Procedure.Snubber Replaced.Procedure Revised | /03L-0:on 830110,discrepancies Noted in 1981 Results for Snubber 63.Caused by Fluid Not Being Added Since 1981 Due to Deficiency in Surveillance Procedure.Snubber Replaced.Procedure Revised | |
| 05000255/LER-1983-006-01, /01T-0:on 830204,during Ae Review of SIRWT Support Structure,Discrepancies Between Support Structure & as-built Documents Noted.Caused by Failure to Document Const Changes in as-built Documentation.Mods Underway | /01T-0:on 830204,during Ae Review of SIRWT Support Structure,Discrepancies Between Support Structure & as-built Documents Noted.Caused by Failure to Document Const Changes in as-built Documentation.Mods Underway | |
| 05000255/LER-1983-007, Forwards LER 83-007/01T-0 | Forwards LER 83-007/01T-0 | |
| 05000255/LER-1983-007-01, /01T-0:on 830204,during Review of SEP Topics Following LOCA W/Concurrent Loss of Either Diesel Generator, Determined Only One Fan in Each Engineering Safeguards Room Cooler Would Operate.Caused by Design Deficiency | /01T-0:on 830204,during Review of SEP Topics Following LOCA W/Concurrent Loss of Either Diesel Generator, Determined Only One Fan in Each Engineering Safeguards Room Cooler Would Operate.Caused by Design Deficiency | |
| 05000255/LER-1983-008-01, /01T-0:on 830209,thermal Overload for One Engineered Safeguards Room Cooler Fan Tripped Based on Evaluation & Testing Activities.Cause Not Stated.Tripped Overload Reset | /01T-0:on 830209,thermal Overload for One Engineered Safeguards Room Cooler Fan Tripped Based on Evaluation & Testing Activities.Cause Not Stated.Tripped Overload Reset | |
| 05000255/LER-1983-008, Forwards LER 83-008/01T-0 | Forwards LER 83-008/01T-0 | |
| 05000255/LER-1983-009-03, /03L-0:on 830127,PCS Sample Revealed Dose Equivalent I-131 Exceeded Tech Specs.Caused by Normal Fuel Leakage.Procedures to Be Revised to Increase Letdown Purification Flow Following Trip | /03L-0:on 830127,PCS Sample Revealed Dose Equivalent I-131 Exceeded Tech Specs.Caused by Normal Fuel Leakage.Procedures to Be Revised to Increase Letdown Purification Flow Following Trip | |
| 05000255/LER-1983-010-03, /03L-0:on 830127,during QA Audit of Completed Tech Spec Surveillances,Quarterly Check of Diesel Fire Pump Batteries for May 1982 Found to Have Exceeded Due Date by 2 Days.Caused by Personnel Error | /03L-0:on 830127,during QA Audit of Completed Tech Spec Surveillances,Quarterly Check of Diesel Fire Pump Batteries for May 1982 Found to Have Exceeded Due Date by 2 Days.Caused by Personnel Error | |
| 05000255/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
| 05000255/LER-1983-011-03, /03L-0:between 830131 & 0213,during Normal Operations,Safety Injection Tank B Level Reached Tech Specs Limit of 198 Inches on Four Occasions.Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve | /03L-0:between 830131 & 0213,during Normal Operations,Safety Injection Tank B Level Reached Tech Specs Limit of 198 Inches on Four Occasions.Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve | |
| 05000255/LER-1983-011, Forwards LER 83-011/03L-0 | Forwards LER 83-011/03L-0 | |
| 05000255/LER-1983-012-03, /03L-0:on 830130,sample from T-82D (Safety Injection Tank D) Showed Boron Concentration Below Tech Spec Limit of 1,720 Ppm.Caused by Boron Dilution Due to Minor Leak Past Check Valve.Primary Coolant Leak Rate Monitored | /03L-0:on 830130,sample from T-82D (Safety Injection Tank D) Showed Boron Concentration Below Tech Spec Limit of 1,720 Ppm.Caused by Boron Dilution Due to Minor Leak Past Check Valve.Primary Coolant Leak Rate Monitored | |
| 05000255/LER-1983-012, Forwards LER 83-012/03L-0 | Forwards LER 83-012/03L-0 | |
| 05000255/LER-1983-015, Forwards LER 83-015/03L-0 | Forwards LER 83-015/03L-0 | |
| 05000255/LER-1983-015-03, /03L-0:on 830221,during post-maint Test on Diesel Generator 1-1,generator Frequency Increased to Approx 65 Hz. Caused by Speed Setting Potentiometer & Mechanical Governor Being Out of Adjustment.Corrective Adjustments Made | /03L-0:on 830221,during post-maint Test on Diesel Generator 1-1,generator Frequency Increased to Approx 65 Hz. Caused by Speed Setting Potentiometer & Mechanical Governor Being Out of Adjustment.Corrective Adjustments Made | |
| 05000255/LER-1983-016-03, /03L-0:on 830224,sample from D Safety Injection Tank T-82D Showed Boron Concentration Below Tech Spec Limit. Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve or Fill & Drain Valve.Concentration Restored | /03L-0:on 830224,sample from D Safety Injection Tank T-82D Showed Boron Concentration Below Tech Spec Limit. Caused by Minor Leakage Past Loop Check Valve & Tank Check Valve or Fill & Drain Valve.Concentration Restored | |
| 05000255/LER-1983-016, Forwards LER 83-016/03L-0 | Forwards LER 83-016/03L-0 | |
| 05000255/LER-1983-017, Forwards LER 83-017/03L-0 | Forwards LER 83-017/03L-0 | |
| 05000255/LER-1983-017-03, /03L-0:on 830305,B Safety Injection Tank T-82B Level Reached Tech Spec Limit.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Valves.Primary Coolant Leak Rate Monitored | /03L-0:on 830305,B Safety Injection Tank T-82B Level Reached Tech Spec Limit.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Valves.Primary Coolant Leak Rate Monitored | |
| 05000255/LER-1983-018, Forwards LER 83-018/03L-0 | Forwards LER 83-018/03L-0 | |
| 05000255/LER-1983-018-03, /03L-0:on 830307,safety Injection Tank D,T-82D Level Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve & Check Valve.Valves Will Be Inspected During Next Outage | /03L-0:on 830307,safety Injection Tank D,T-82D Level Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve & Check Valve.Valves Will Be Inspected During Next Outage | |
| 05000255/LER-1983-019, Forwards LER 83-019/01T-0 | Forwards LER 83-019/01T-0 | |
| 05000255/LER-1983-019-01, /01T-0:on 830319,during Inoperability of D Safety Injection Tank T-82D Due to Routine Evolution,Second Tank T-82B Became Inoperable Because of Low Level.Caused by Leakage Past Drain Valves.Valves Will Be Inspected | /01T-0:on 830319,during Inoperability of D Safety Injection Tank T-82D Due to Routine Evolution,Second Tank T-82B Became Inoperable Because of Low Level.Caused by Leakage Past Drain Valves.Valves Will Be Inspected | |
| 05000255/LER-1983-020-01, /01T-0:on 830321,discovered That Current Core Safety Analysis Does Not Account for Response Times of PCS Resistance Temp Device (Rtd).Caused by Oversight of Analyst to Include RTD Response Time in Analysis | /01T-0:on 830321,discovered That Current Core Safety Analysis Does Not Account for Response Times of PCS Resistance Temp Device (Rtd).Caused by Oversight of Analyst to Include RTD Response Time in Analysis | |
| 05000255/LER-1983-020, Forwards LER 83-020/01T-0 | Forwards LER 83-020/01T-0 | |
| 05000255/LER-1983-021, Forwards LER 83-021/03L-0 | Forwards LER 83-021/03L-0 | |
| 05000255/LER-1983-021-03, /03L-0:on 830326,sample from Safety Injection Tank D Showed Boron Concentration Below 1,720 Ppm Tech Spec Limit.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve or Fill & Drain Valve | /03L-0:on 830326,sample from Safety Injection Tank D Showed Boron Concentration Below 1,720 Ppm Tech Spec Limit.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve or Fill & Drain Valve | |
| 05000255/LER-1983-022-01, /01T-0:on 830411,sample from T-82D Safety Injection Tank Showed Boron Concentration Below Tech Spec Limit.Caused by Minor Leak Past Loop Check Valve & Safety Injection Tank Check Valve or Fill & Drain Valve | /01T-0:on 830411,sample from T-82D Safety Injection Tank Showed Boron Concentration Below Tech Spec Limit.Caused by Minor Leak Past Loop Check Valve & Safety Injection Tank Check Valve or Fill & Drain Valve | |
| 05000255/LER-1983-022, Forwards LER 83-022/01T-0 | Forwards LER 83-022/01T-0 | |
| 05000255/LER-1983-023, Forwards LER 83-023/01T-0 | Forwards LER 83-023/01T-0 | |
| 05000255/LER-1983-023-01, /01T-0:on 830415,during Routine Sampling of Safety Injection Tank D,Tank Level Fell Below Tech Spec Limit of 186 Inches.Caused by Delayed Fill Operations When Low Flow Alarm Received for Cooling Water | /01T-0:on 830415,during Routine Sampling of Safety Injection Tank D,Tank Level Fell Below Tech Spec Limit of 186 Inches.Caused by Delayed Fill Operations When Low Flow Alarm Received for Cooling Water | |
| 05000255/LER-1983-025-03, /03L-0:on 830410,sample from T-82c Showed Boron Concentration Below Tech Spec Limit of 1720 Ppm.Caused by Minor Leakage Past Loop Check Valve & SIT Check Valve. Primary Coolant Leak Rate Being Closely Monitored | /03L-0:on 830410,sample from T-82c Showed Boron Concentration Below Tech Spec Limit of 1720 Ppm.Caused by Minor Leakage Past Loop Check Valve & SIT Check Valve. Primary Coolant Leak Rate Being Closely Monitored | |
| 05000255/LER-1983-025, Forwards LER 83-025/03L-0 | Forwards LER 83-025/03L-0 | |
| 05000255/LER-1983-026, Forwards LER 83-026/01T-0 | Forwards LER 83-026/01T-0 | |
| 05000255/LER-1983-026-01, /01T-0:on 830428,sample from T-82D (Safety Tank D) Showed Boron Concentration Below Tech Spec Limit.Caused by Boron Dilution Due to Minor Leakage Past Loop Check Valve. Primary Coolant Leak Rate Monitored | /01T-0:on 830428,sample from T-82D (Safety Tank D) Showed Boron Concentration Below Tech Spec Limit.Caused by Boron Dilution Due to Minor Leakage Past Loop Check Valve. Primary Coolant Leak Rate Monitored | |
| 05000255/LER-1983-027-01, /01T-0:on 830428,w/safety Injection Tank D T-820 Inoperable,Tank T-82B Became Inoperable Due to Low Level. Caused by Leakage Past Fill & Drain Valve on Tank B.Fill & Drain Valves to Be Inspected & Repaired | /01T-0:on 830428,w/safety Injection Tank D T-820 Inoperable,Tank T-82B Became Inoperable Due to Low Level. Caused by Leakage Past Fill & Drain Valve on Tank B.Fill & Drain Valves to Be Inspected & Repaired | |
| 05000255/LER-1983-027, Forwards LER 83-027/01T-0 | Forwards LER 83-027/01T-0 | |
| 05000255/LER-1983-028-03, /03L-0:on 830415,level of Safety Injection Tank D Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve.Leak Rate Being Closely Monitored.Valves Will Be Inspected | /03L-0:on 830415,level of Safety Injection Tank D Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve.Leak Rate Being Closely Monitored.Valves Will Be Inspected | |
| 05000255/LER-1983-029-03, /03L-0:on 830422,safety Injection Tank B Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve.Primary Coolant Leak Rate Being Monitored. Tank Restored to Normal Range | /03L-0:on 830422,safety Injection Tank B Reached Tech Spec Limit of 198 Inches.Caused by Minor Leakage Past Loop Check Valve.Primary Coolant Leak Rate Being Monitored. Tank Restored to Normal Range | |
| 05000255/LER-1983-030-01, /01T-0:on 830509,sample from Safety Injection Tank T-82D Showed Boron Concentration Below Tech Spec Limit. Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check or Fill & Drain Valve | /01T-0:on 830509,sample from Safety Injection Tank T-82D Showed Boron Concentration Below Tech Spec Limit. Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check or Fill & Drain Valve | |
| 05000255/LER-1983-031-01, /01T-0:on 830509,w/safety Injection Tank (SIT) D (T-82D) Inoperable Due to Routine Evolution,Second SIT (T-82B) Became Inoperable Due to Low Level.Caused by Leakage Past Fill & Drain Valve on SIT B | /01T-0:on 830509,w/safety Injection Tank (SIT) D (T-82D) Inoperable Due to Routine Evolution,Second SIT (T-82B) Became Inoperable Due to Low Level.Caused by Leakage Past Fill & Drain Valve on SIT B | |