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• 1CAN061810, Forwards Monthly Operating Rept for May 1981.Revised Pages for Mar & Apr 1981 Also Encl  + (07:10:41, 18 September 2025)
• PM-81-507, Forwards Monthly Operating Rept for May 1981  + (07:10:43, 18 September 2025)
• TXX-3310, Advises That Evaluation of Consequences of Circulating Water Expansion Joint Failure Is in Progress.Specific Aim Is to Ascertain Time When Resultant Flooding of Turbine & Electrical & Control Bldgs Will Reach PMF Water Levels  + (07:10:47, 18 September 2025)
• PM-81-506, Forwards Monthly Operating Rept for May 1981  + (07:10:54, 18 September 2025)
• 05000346/LER-1981-023-03, /03L-1:on 810403,decay Heat Cooler Outlet Valve CC1467 Stroked Closed During Component Cooling Water Monthly Test & Would Not Reopen.Caused by Excessive Wear on Actuator Due to Design Deficiency.Actuator Rebuilt  + (07:11:13, 18 September 2025)
• 05000368/LER-1979-055-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed, Upon Receipt of Main Feedwater Controller B Emergency Signal.Caused by Turbine Design Deficiency  + (07:11:23, 18 September 2025)
• 05000368/LER-1980-050-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified  + (07:11:27, 18 September 2025)
• 05000368/LER-1980-036-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified  + (07:11:30, 18 September 2025)
• 05000368/LER-1980-030-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified  + (07:11:34, 18 September 2025)
• 05000368/LER-1980-022-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified  + (07:11:39, 18 September 2025)
• 05000368/LER-1979-104-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified  + (07:11:42, 18 September 2025)
• 05000313/LER-1980-030-99, Three Lower Manway Studs on Once Thru Steam Generator E24A Were Found W/Indications of Cracking.Caused by Stress Corrosion Mechanism.Studs Replaced  + (07:11:48, 18 September 2025)
• 05000313/LER-1980-030, Forwards Updated LER 80-030/99X-1  + (07:11:52, 18 September 2025)
• 05000368/LER-1980-086-03, Leak Identified on Sensing Line of Reactor Coolant Pump P Transmitter for 2P32B.Caused by Vibration Induced Fatigue Due to Binding in heli-coil Adjacent to Valve.Line Replaced  + (07:11:58, 18 September 2025)
• 05000368/LER-1980-086, Forwards Updated LER 80-086/03X-1  + (07:12:04, 18 September 2025)
• 05000237/LER-1981-036, Forwards LER 81-036/01T-0  + (07:12:16, 18 September 2025)
• 05000237/LER-1981-023, Forwards LER 81-023/03L-0  + (07:12:19, 18 September 2025)
• 05000302/LER-1980-055-03, /03L-1:on 801218,load Sequence Block 3 Trip Circuit Would Not Reset Following Actuation Test.Caused by Loose Connection in Relay 62-2/RC3 Mounting Block.Relay Reinstalled  + (07:12:26, 18 September 2025)
• 05000302/LER-1980-055, Forwards LER 80-055/03L-1  + (07:12:28, 18 September 2025)
• TAC:43915  + (07:12:29, 18 September 2025)
• A01531, Responds to IE Bulletin 81-01, Surveillance of Mechanical Snubbers. All Piping Sys W/Inoperable Mechanical Snubbers Supplied by Intl Nuclear Safeguards Corp Are Acceptable for Continued Operation.Inoperable Snubbers Were Replaced  + (07:12:43, 18 September 2025)
• A810013, Submits Addl Info to 810306 Response to IE Bulletin 81-01 Re Mechanical Snubber Surveillance.Visual Insps Shall Include Checking for Evidence of Large Impact Loads or Excessive Vibrations  + (07:12:59, 18 September 2025)
• 05000259/LER-1981-016, Forwards LER 81-016/01T-0  + (07:13:06, 18 September 2025)
• 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored  + (07:13:10, 18 September 2025)
• 05000334/LER-1981-031-01, /01T-0:on 810427,free Chlorine Measured at Outfall Structure & Duration of Condenser Tube Chlorination Exceeded Tech Spec Limits.Caused by Communication Problem Re Inservice Portions of Sys.Overchlorination Stopped  + (07:13:19, 18 September 2025)

• 05000260/LER-1980-026-03, Reactor Motor Operated Valve Board Lost Power to Normal Feeder Breaker Which Is Supplied from 3A Compartment of 2A Shutdown Board.Cause Unknown.Suspected Power Sensor Unit Tested Satisfactorily  + (07:13:20, 18 September 2025)

• 05000260/LER-1980-026, Forwards Updated LER 80-026/03X-1  + (07:13:22, 18 September 2025)
• TAC:11692  + (07:13:33, 18 September 2025)
• 05000348/LER-1981-002-01, /01T-1:on 810202,broken Puffer Tubes Identified on 4,160-volt Circuit Breakers.Caused by Matl Aging.Tubes Will Be Replaced  + (07:13:40, 18 September 2025)
• 05000348/LER-1981-002, Forwards LER 81-002/01T-1  + (07:13:44, 18 September 2025)
• 05000321/LER-1980-080-03, Water Found Leaking from Insulation on Reactor Water Cleanup Return Line.Caused by Crack in Heat Affected Zone of Stainless Steel Spool Piece on Common Return to Reactor Vessel Due to Stress Corrosion  + (07:14:16, 18 September 2025)
• 05000321/LER-1980-080, Forwards Updated LER 80-080/03X-1  + (07:14:18, 18 September 2025)
• TAC:12428  + (07:14:33, 18 September 2025)
• EPID:L-2019-LRM-0084  + (07:14:35, 18 September 2025)
• TAC:42756  + (07:14:41, 18 September 2025)
• A00921, Forwards Addl Response to IE Bulletin 80-06, Engineered Safety Feature Reset Controls. Reset Logic Associated W/Certain Components Did Not Require Mods.Items & Justification for Deletions Described  + (07:14:43, 18 September 2025)
• 05000327/LER-1981-028, Forwards LER 81-028/03L-0  + (07:15:11, 18 September 2025)
• EPID:L-2019-LRM-0087  + (07:15:13, 18 September 2025)
• 05000313/LER-1980-028-01, Intake Structure Concrete Access Plugs Removed.Later Review Identified Access Barriers to Be Missile Shields & No Protection Provided at Personnel Access Doors.Plugs Replaced  + (07:15:19, 18 September 2025)
• 05000313/LER-1980-028, Forwards Revised LER 80-028/01X-1  + (07:15:30, 18 September 2025)
• 05000346/LER-1980-025-03, /03X-1:on 800330,control Rod Group 5,rod 11 Absolute Position Indication Declared Inoperable.Caused by Fluctuating Signals Resulting in Numerous Asymmetric Rod Alarms Due to Defective Reed Switch Assemblies  + (07:15:36, 18 September 2025)
• 05000346/LER-1980-025, Forwards LER 80-025/03X-1  + (07:15:38, 18 September 2025)
• 05000260/LER-1981-010-03, /03L-0:on 810306,during Normal Operation,Special Instruction 4.1.B.2 Was Not Performed.Caused by Personnel Error.Personnel Cautioned to Perform Instructions as Scheduled  + (07:15:41, 18 September 2025)
• 05000260/LER-1981-010, Forwards LER 81-010/03L-0  + (07:15:43, 18 September 2025)
• 05000338/LER-1981-007-99, Plug Found Missing from Tube at Row 1,column 12.On 810202,two More Plugs Found Missing.Caused by Bad Seals.One Tube Was Replugged on 810124.Other Two Tubes Replugged on 810303  + (07:15:59, 18 September 2025)
• 05000338/LER-1981-007, Forwards Updated LER 81-007/99X-1  + (07:16:01, 18 September 2025)
• 05000338/LER-1980-087-03, During Repairs to Steam Driven Auxiliary Feedwater Pump 1-FW-P-2,turbine Trip Valve Tripped Upon Pump Startup.Cause Unstated.Valve Governor Reset & Retested Satisfactorily  + (07:16:03, 18 September 2025)
• 05000338/LER-1980-087, Forwards Updated LER 80-087/03X-1  + (07:16:05, 18 September 2025)
• TAC:12162  + (07:16:07, 18 September 2025)
• ML19350B860  + (07:16:08, 18 September 2025)
• ML19350B856  + (07:16:09, 18 September 2025)