LER-1977-021, /03L-0:on 771122,reactor Bldg Cooling Fan VSF-1B Tripped.Caused by Unlubricated Bearings.Fans Placed on Lubrication Schedules & VSF-1C Bearings Replaced |
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| 3131977021R03 - NRC Website |
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| 05000313/LER-1977-020, Forwards LER 77-020/03L-0 | Forwards LER 77-020/03L-0 | | | 05000313/LER-1977-020-03, /03L: on 771023,diesel Generator 1 Failed to Start During Monthly Test.Caused by Starter Failure Time Delay Relay Setpoint Drift & Shorted Diode.Setpoint Adjusted & Diode Replaced | /03L: on 771023,diesel Generator 1 Failed to Start During Monthly Test.Caused by Starter Failure Time Delay Relay Setpoint Drift & Shorted Diode.Setpoint Adjusted & Diode Replaced | | | 05000313/LER-1977-021-03, /03L-0:on 771122,reactor Bldg Cooling Fan VSF-1B Tripped.Caused by Unlubricated Bearings.Fans Placed on Lubrication Schedules & VSF-1C Bearings Replaced | /03L-0:on 771122,reactor Bldg Cooling Fan VSF-1B Tripped.Caused by Unlubricated Bearings.Fans Placed on Lubrication Schedules & VSF-1C Bearings Replaced | | | 05000313/LER-1977-022, Forwards LER 77-022/01T-0 | Forwards LER 77-022/01T-0 | | | 05000313/LER-1977-022-01, /01T:on 771123,loss of Required Overlap Between Operating Control Rod Groups Occurred.Caused by Group 7 Not Reaching in-limit When Motion Was Stopped.Operator Adjusted Group 5 Manually | /01T:on 771123,loss of Required Overlap Between Operating Control Rod Groups Occurred.Caused by Group 7 Not Reaching in-limit When Motion Was Stopped.Operator Adjusted Group 5 Manually | | | 05000313/LER-1977-023-03, /03L-0:on 771125,leak Found in B Header Spray Piping at 390 Ft.Cause unknown.10 Ft of Piping Replaced | /03L-0:on 771125,leak Found in B Header Spray Piping at 390 Ft.Cause unknown.10 Ft of Piping Replaced | | | 05000313/LER-1977-024-03, /03L-0:on 771125,pinhole Leaks Found in Spent Fuel Cooling Sys.Cause Unknown.Leaks Will Be Monitored & Repaired Prior to Second Refueling Outage | /03L-0:on 771125,pinhole Leaks Found in Spent Fuel Cooling Sys.Cause Unknown.Leaks Will Be Monitored & Repaired Prior to Second Refueling Outage | | | 05000313/LER-1977-025-03, /03L-0:on 771129,during Insp,Snubber Fluid Reservoir for PSV-1000 Found Empty W/Cracked Wiper Ring. Caused by Ring Matl.New Ring & Gaskets Made of Ethylene Propylene Installed | /03L-0:on 771129,during Insp,Snubber Fluid Reservoir for PSV-1000 Found Empty W/Cracked Wiper Ring. Caused by Ring Matl.New Ring & Gaskets Made of Ethylene Propylene Installed | | | 05000313/LER-1977-026-03, /03L-0:on 771203,reactor Coolant Pump Seal Pressure Dropped & Leakage Occurred.Caused by Wear Due to Startups & Shutdowns.All Pump Seals Replaced | /03L-0:on 771203,reactor Coolant Pump Seal Pressure Dropped & Leakage Occurred.Caused by Wear Due to Startups & Shutdowns.All Pump Seals Replaced | | | 05000313/LER-1977-027-03, /03L-0:on 771203,weld in Vent Line to Valve DH-1010 Leaked.Caused by vibration.Three-quarter Inch Half Coupling & Vent Valve Replaced w/2 by 3 Inch Sockolet & Plug,Eliminating Valve DH-1010 | /03L-0:on 771203,weld in Vent Line to Valve DH-1010 Leaked.Caused by vibration.Three-quarter Inch Half Coupling & Vent Valve Replaced w/2 by 3 Inch Sockolet & Plug,Eliminating Valve DH-1010 | |
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