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Showing below up to 50 results in range #151 to #200.
- 05000029/LER-1977-011, Forwards LER 77-011/03L-0
- 05000029/LER-1977-011-03, /03L-0:on 770301,emergency Diesel Generator 1 Starter Motor Failed During Surveillance Test.Caused by Armmature Shaft Being Broke.Starting Motor Replaced
- 05000029/LER-1977-012, Forwards LER 77-012/03L-0
- 05000029/LER-1977-012-03, /03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced
- 05000029/LER-1977-013, Forwards LER 77-013/03L-0
- 05000029/LER-1977-013-03, /03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator
- 05000029/LER-1977-014, Forwards LER 77-014/03L-0
- 05000029/LER-1977-014-03, /03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted
- 05000029/LER-1977-015, Forwards LER 77-015/03L-0
- 05000029/LER-1977-015-03, /03L-0:on 770311,reading of built-in Source Check of Main Coolant Leak Detection Vapor Container Air Particulate Monitor Found Indicating Low & Declared Inoperative.Caused by High Voltage & Control Drift
- 05000029/LER-1977-016, Forwards LER 77-016/03L-0
- 05000029/LER-1977-016-03, /03L-0:on 770318,during Routine Collection of Vapor Container Atmosphere Grab Sample,Snow Short Circuited Main Coolant Sys Leakage Continuous Air Particulate Monitor, Causing Room Indication to Drop to Zero
- 05000029/LER-1977-017, Forwards LER 77-017/03L-0
- 05000029/LER-1977-017-03, /03L-0:on 770324,following Plant Trip,Chlorides in Steam Generator 4 Exceeded Tech Specs Limits.Caused by Impurities Released in Bulk Water
- 05000029/LER-1977-018, Forwards LER 77-018/03L-0
- 05000029/LER-1977-018-03, /03L-0:on 770326,steam Generator Chloride Concentration Increased to Max Level of 4 Ppm in Steam Generator 2,exceeding Tech Specs Limit
- 05000029/LER-1977-019, Forwards LER 77-019/03L-0
- 05000029/LER-1977-019-03, /03L-0:on 770402,radioactive Gaseous Waste Monitor Loop Seal Discharge Monitor Alarm Failed to Operate.Caused by Alarm Setpoint & Meter Pointer Contacts Being Corroded. Contacts Cleaned,Mylar Film & Protective Tape Replaced
- 05000029/LER-1977-020, Forwards LER 77-020/03L-0
- 05000029/LER-1977-020-03, /03L-0:on 770415,during Paper Replacement in Main Coolant Leakage Vapor Container Air Particulate Monitor Paper Drive Found Inoperative.Caused by Deterioration of Reduction Gears.Reduction Gears Rebuilt & Lubricated
- 05000029/LER-1977-021, Forwards LER 77-021/03L-0
- 05000029/LER-1977-021-03, /03L-0:on 770420,air Mass Calculation Performed on 770419 Indicated That Significant Leak in Primary Containment Might Exist.Data Point Indicated That VC Air Pressure Had Fallen.No Leak Found,Reactor Cooled Down
- 05000029/LER-1977-022, Forwards LER 77-022/03L-0
- 05000029/LER-1977-022-03, /03L-0:on 770421,steam Generator Chloride Concentration Increased to Max Level of 0.8 Ppm in All Four Steam Generators,Exceeding Tech Specs Limits.Caused by Chloride Entering Steam Generator in Feedwater Areas
- 05000029/LER-1977-023, Forwards LER 77-023/03L-0
- 05000029/LER-1977-023-03, /03L-0:on 770425,net Decrease in Sys Vol Found. Sys Check Performed & Leaking Diaphragm Valve Discovered.Caused by Petroleum Based Substance on Valve. Diaphragm Replaced
- 05000029/LER-1977-024, Forwards LER 77-024/03L-0
- 05000029/LER-1977-024-03, /03L-0:on 770428,loop Seal Discharge Radioactive Gaseous Monitor Indication Went to Zero.Caused by Drift in RM-40 Power Supply High Voltage.High Voltage Adjusted
- 05000029/LER-1977-025, Forwards LER 77-025/03L-0
- 05000029/LER-1977-025-03, /03L-0:on 770503,when Component Cooling Radiation Monitor Channel Drawer Removed,Cables Dropped Into Uncovered High Voltage Power Supply Used for Loop Seal Discharge Monitor Causing Short Circuit & Failure of Monitor
- 05000029/LER-1977-026, Forwards LER 77-026/03L-0
- 05000029/LER-1977-026-03, /03L-0:on 770518,control Room Received Low Flow Alarm on Primary Vent Stack Particulate Radiation Monitor Channel.Caused by Paper in Util Being Slightly Oversized & Boundup.New Roll of Paper Installed
- 05000029/LER-1977-027, Forwards LER 77-027/03L-0
- 05000029/LER-1977-027-03, /03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit
- 05000029/LER-1977-028, Forwards LER 77-028/03L-0
- 05000029/LER-1977-028-03, /03L-0:on 770530,noble Gas Monitor of Primary Vent Stack Radiation Detection Sys Failed.Cause Could Not Be Ascertained as Trouble Could Not Be Repeated After Alarm Reset
- 05000029/LER-1977-029, Forwards LER 77-029/03L-0
- 05000029/LER-1977-029-03, /03L-0:on 770603,during Mode 1,primary Vent Stack Radiation Detection Sys Particulate Channel Failed.Caused by Control Setpoint Being Set Too Close Together.Control Setpoint Readjusted
- 05000029/LER-1977-030, Forwards LER 77-030/01T-0
- 05000029/LER-1977-030-01, /01T-0:on 770608,while Performing LOCA Analysis for Core 13 Reload Submittal,Small Break Scenario Discovered Which Appeared More Limiting than Any Analyzed for Core 12. Caused by Errors in Accident Analysis
- 05000029/LER-1977-031, Forwards LER 77-031/03L-0
- 05000029/LER-1977-031-03, /03L-0:on 770609,loop Seal Radiation Monitor Pegged at Low End of Scale.Caused by RM-40 Power Supply High Voltage Tripping.Voltage Adjusted
- 05000029/LER-1977-032, Forwards LER 77-032/03L-0
- 05000029/LER-1977-032-03, /03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp
- 05000029/LER-1977-033, Forwards LER 77-033/03L-0
- 05000029/LER-1977-033-03, /03L-0:on 770620,discovered That Five of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired
- 05000029/LER-1977-034, Forwards Updated LER 77-034/03L-0
- 05000029/LER-1977-034-03, Testing of Pressurizer Code Safety valves,PR-SV-181 & 182 Found Open at Pressure Higher than Allowable.Caused by Setpoint Drift.Valves Adjusted & Retested to Verify Lifting Pressure
- 05000029/LER-1977-035, Forwards LER 77-035/03L-0
- 05000029/LER-1977-035-03, /03L-0:on 770627,discovered That Four of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired