| | | Reporting criterion |
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| 05000029/LER-1977-001, Forwards LER 77-001/03L-0 | Forwards LER 77-001/03L-0 | |
| 05000029/LER-1977-002-03, /03L-0:on 770107,during Monthly Test,Inboard Packing Gland of Low Pressure Pump 1 Found to Leak Excessively.Caused by Packing Deterioration.Pump Removed from Svc,Repacked & Satisfactorily Test Run | /03L-0:on 770107,during Monthly Test,Inboard Packing Gland of Low Pressure Pump 1 Found to Leak Excessively.Caused by Packing Deterioration.Pump Removed from Svc,Repacked & Satisfactorily Test Run | |
| 05000029/LER-1977-002, Forwards LER 77-002/03L-0 | Forwards LER 77-002/03L-0 | |
| 05000029/LER-1977-003-03, /03L-0:on 770110,primary Vent Stack Monitor Particulate Channel Failed to Meet Acceptance Criteria of Channel Functional Test.Caused by Drifting of Instruments High Voltage.High Voltage Adjusted | /03L-0:on 770110,primary Vent Stack Monitor Particulate Channel Failed to Meet Acceptance Criteria of Channel Functional Test.Caused by Drifting of Instruments High Voltage.High Voltage Adjusted | |
| 05000029/LER-1977-003, Forwards LER 77-003/03L-0 | Forwards LER 77-003/03L-0 | |
| 05000029/LER-1977-004-03, /03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated | /03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated | |
| 05000029/LER-1977-004, Forwards LER 77-004/03L-0 | Forwards LER 77-004/03L-0 | |
| 05000029/LER-1977-005-03, /03L-0:on 770116,vapor Container Drain Tank Level Transmitter Diaphragm Failed During Normal Operation.Caused by Transmitter Operating Between Crud Sensing Lines. Transmitter Replaced & Sensing Lines Cleaned | /03L-0:on 770116,vapor Container Drain Tank Level Transmitter Diaphragm Failed During Normal Operation.Caused by Transmitter Operating Between Crud Sensing Lines. Transmitter Replaced & Sensing Lines Cleaned | |
| 05000029/LER-1977-005, Forwards LER 77-005/03L-0 | Forwards LER 77-005/03L-0 | |
| 05000029/LER-1977-006, Forwards LER 77-006/03L-0 | Forwards LER 77-006/03L-0 | |
| 05000029/LER-1977-006-03, /03L-0:on 770131,eight Temp Readout Points on Boric Acid Line Found Below Tech Specs Limit.Caused by Sys Evolutions Not Adequately Analyzed During Review of Westinghouse Sts.Proposed Change Initiated | /03L-0:on 770131,eight Temp Readout Points on Boric Acid Line Found Below Tech Specs Limit.Caused by Sys Evolutions Not Adequately Analyzed During Review of Westinghouse Sts.Proposed Change Initiated | |
| 05000029/LER-1977-007, Forwards LER 77-007/03L-0 | Forwards LER 77-007/03L-0 | |
| 05000029/LER-1977-007-03, /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted | /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted | |
| 05000029/LER-1977-008, Forwards LER 77-008/03L-0 | Forwards LER 77-008/03L-0 | |
| 05000029/LER-1977-008-03, /03L-0:on 770204,iodine Channel of Primary Vent Stack Radiation Monitoring Failed to Meet Count Rate Acceptance Criteria.Caused by Mechanical Stops Being Misaligned W/Detector.Stops Aligned & Tightened | /03L-0:on 770204,iodine Channel of Primary Vent Stack Radiation Monitoring Failed to Meet Count Rate Acceptance Criteria.Caused by Mechanical Stops Being Misaligned W/Detector.Stops Aligned & Tightened | |
| 05000029/LER-1977-009, Forwards LER 77-009/03L-0 | Forwards LER 77-009/03L-0 | |
| 05000029/LER-1977-009-03, /03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed | /03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed | |
| 05000029/LER-1977-010-03, /03L-0:on 770224,light Leakage Found from Weld on Discharge Line of Charging Pump 3 at Inlet to Pump Relief Valve.Caused by Failure of Weld & Pipe Nipple.Piping Sections Replaced | /03L-0:on 770224,light Leakage Found from Weld on Discharge Line of Charging Pump 3 at Inlet to Pump Relief Valve.Caused by Failure of Weld & Pipe Nipple.Piping Sections Replaced | |
| 05000029/LER-1977-010, Forwards LER 77-010/03L-0 | Forwards LER 77-010/03L-0 | |
| 05000029/LER-1977-011, Forwards LER 77-011/03L-0 | 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 | /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-1977-012-03, /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 | /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-1977-012, Forwards LER 77-012/03L-0 | Forwards LER 77-012/03L-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 | /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-1977-013, Forwards LER 77-013/03L-0 | Forwards LER 77-013/03L-0 | |
| 05000029/LER-1977-014, Forwards LER 77-014/03L-0 | 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 | /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 | 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 | /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 | 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 | /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-1977-017-03, /03L-0:on 770324,following Plant Trip,Chlorides in Steam Generator 4 Exceeded Tech Specs Limits.Caused by Impurities Released in Bulk Water | /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-1977-017, Forwards LER 77-017/03L-0 | Forwards LER 77-017/03L-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 | /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-1977-018, Forwards LER 77-018/03L-0 | Forwards LER 77-018/03L-0 | |
| 05000029/LER-1977-019, Forwards LER 77-019/03L-0 | 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 | /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 | 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 | /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-1977-021-03, /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 | /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-1977-021, Forwards LER 77-021/03L-0 | Forwards LER 77-021/03L-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 | /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-1977-022, Forwards LER 77-022/03L-0 | Forwards LER 77-022/03L-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 | /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-1977-023, Forwards LER 77-023/03L-0 | Forwards LER 77-023/03L-0 | |
| 05000029/LER-1977-024, Forwards LER 77-024/03L-0 | 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 | /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-1977-025-03, /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 | /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-1977-025, Forwards LER 77-025/03L-0 | Forwards LER 77-025/03L-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 | /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 | |