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List of results

• 05000461/LER-1997-020, :on 970715,discovered Failure to Document Effect of Degraded Coatings in Containment on Eccs.Caused by Failure of Personnel to Perform Evaluation on Degraded Coatings.Performed Evaluation & Removed Degraded Coatings  + (19:45:07, 23 May 2025)
• 05000254/LER-1999-002-01, Forwards LER 99-002-01,IAW 10CFR50.73(a)(2)(iv).Rev Includes Cause Codes & Energy Industry Identification Sys Identifiers Which Were Erroneously Omitted in Original Ler.Commitments Listed  + (19:45:30, 23 May 2025)
• 05000423/LER-1997-046, :on 970523,determined That Situation Could Result in Loss of Both Trains of Rs Sys.Caused by Design Deficiency.Design Mod Implemented to Address Rs Sys  + (19:45:32, 23 May 2025)
• 05000271/LER-1996-012-01, :on 960416,determined That Low Pressure Coolant Injection Flow Could Potentially Be Diverted.Caused by Inadequate Design Review Prior to Proceduralizing Use of Sys.Revised RHR Procedures  + (19:45:52, 23 May 2025)
• TXX-9918, Forwards CPSES 10CFR50.59 Evaluation Summary Rept 0008,for 970802-990201 & CPSES Commitment Matl Change Evaluation Rept 0003,for 970802-990630  + (19:45:56, 23 May 2025)
• 05000245/LER-1996-035, :on 960506,discovered Leaking gamma-radiography Access Port Plug in LPCI Sys Piping.Caused by Access Port Plug Not Being Included in Insp Program.Two Degraded Gamma Plugs Will Be Repaired by Weld Overlay  + (19:46:00, 23 May 2025)
• 05000423/LER-1997-040, :on 970627,quarterly IST Closure Testing of SW Sys Check Valves 3SWP* 705,706,707 & 708 Were Not Performed. Caused by Programmatic or Managerial Deficiency.Performed Review of IST Program  + (19:46:05, 23 May 2025)
• 05000423/LER-1996-036-02, Forwards LER 96-036-02,documenting Condition Originally Identified on 960926.List of Commitments Provided  + (19:46:33, 23 May 2025)
• 05000423/LER-1997-042, :on 970701,RC Dilution Isolation Valves Were Inoperable Due to Not Being Included in IST Program Which Resulted in Inoperability of Emergency Boration Sys.Revised IST Program Plan & Surveillance Test Procedures  + (19:46:36, 23 May 2025)
• TXX-9916, Notifies NRC That CPSES Units 1 & 2,improved TS Implemented on 990727  + (19:46:43, 23 May 2025)
• ML20210J726  + (19:46:47, 23 May 2025)
• ML20210J706  + (19:46:52, 23 May 2025)
• NUREG-0900, Informs Commission of Status of Staff Reassessment of Source Terms & Related Severe Accident Research Activities,For Use in Implementing Commission Severe Accident Policy Statement. NEA Mar 1986 Rept, Nuclear Reactor...Source Terms, Encl  + (19:46:58, 23 May 2025)
• ML20210J658  + (19:47:03, 23 May 2025)
• NRC-95-4561, Submits Revised Ltr & Attachment Addressing RAI 480.408, Informing That NTD-NRC-95-4561, Scaling Role in AP600 PCS DBA Analysis, Was Sent to TR Quay by Ba Mcintyre Rather than from Nj Liparulo to RW Borchardt  + (19:47:05, 23 May 2025)
• IR 07100128/2012002  + (19:47:29, 23 May 2025)
• 05000251/LER-1980-007-01, /01T-2:on 800507,disc Stud Nut Discovered Missing from Main Steam Check Valve 4A.Caused by Failure of Associated Locking Device.Disc Studs Replaced & Improved Locking Device Installed  + (19:47:41, 23 May 2025)
• IR 05000413/1985050  + (19:48:01, 23 May 2025)
• NUREG-0897, Forwards Susceptibility of ERCO-SIL 36S Insulation Pillows to Debris Formation Under Exposure to Energetic Jet Flows & Bouyancy,Transport & Head Loss Characteristics of ERCO-SIL 36S Insulation Pillows for Nuclear..  + (19:48:36, 23 May 2025)
• L-99-027, Addresses Clarifications to Selected Responses to Chapter 3.8 RAI Requested in NRC Conference Call on 990624, Resolution of Open Issue Related to Containment Purge in Chapter 3.6 & Response Related to Chapter 3.5  + (19:49:09, 23 May 2025)
• ML20210J038  + (19:49:12, 23 May 2025)
• TAC:MA6086  + (19:49:18, 23 May 2025)
• ML20210J009  + (19:49:21, 23 May 2025)
• IR 05000354/1986027  + (19:49:54, 23 May 2025)
• IR 05000263/1997006  + (19:50:22, 23 May 2025)

• ST-HL-AE-1637, Rept 4,Colorado River Entrainment & Impingement Monitoring Program Phase Two Studies,Oct-Dec 1985  + (19:50:43, 23 May 2025)

• IR 05000275/1999007  + (19:50:49, 23 May 2025)
• ML20210H570  + (19:51:08, 23 May 2025)
• IR 05000461/1996015  + (19:51:29, 23 May 2025)
• IR 05000373/1996010  + (19:51:31, 23 May 2025)
• IR 05000440/1996016  + (19:51:42, 23 May 2025)
• ML20210H408  + (19:52:07, 23 May 2025)
• ML20210H345  + (19:52:21, 23 May 2025)
• A93443, Forwards Addl Info as Committed to in Telcon Between Amerenue & NRC Personnel on 990616,re GL 95-07, Pressure Locking & Thermal Binding of MOV Gate Valves  + (19:52:34, 23 May 2025)
• 05000423/LER-1997-045, :on 970616,identified Discrepancy Between FSAR & TS Definitions of Reactor Trip Sys Response Time.Caused by Mgt Expectations & Guidance Re Literal Compliance W/Ts Neither Clear Nor Adequately Communicated.Testing Changed  + (19:52:44, 23 May 2025)
• ML20210H247  + (19:52:45, 23 May 2025)
• IR 05000413/1999010  + (19:52:58, 23 May 2025)
• IR 05000348/1999009  + (19:53:10, 23 May 2025)
• ML20210H123  + (19:53:12, 23 May 2025)
• IR 05000338/1986005  + (19:53:28, 23 May 2025)
• ML20210G966  + (19:53:56, 23 May 2025)
• ML20210G849  + (19:54:23, 23 May 2025)
• L-99-118, Forwards Response to NRC AL 99-02,request for Info Re Estimate of Number of New Licensing Actions Expected to Be Submitted in Fy 2000 & 2001  + (19:54:25, 23 May 2025)
• IR 05000327/1986020  + (19:54:59, 23 May 2025)
• IR 05000250/1986016  + (19:55:15, 23 May 2025)
• 05000366/LER-1999-007, :on 990628,automatic Reactor Shutdown Occurred. Caused by Personnel Error & Inadequate Corrective Action. Involved Personnel Were Disciplined & Calibr of Level Instrument Has Been Changed  + (19:55:16, 23 May 2025)
• IR 05000498/1986033  + (19:55:20, 23 May 2025)
• 05000250/LER-1979-031-03, /03T-2:on 791008,hex Nut Discovered Lodged in Internals of Main Steam Supply Valve to Moisture separator- Reheater 3C.Caused by Failure of Washer & Locking Device. Hex Nut & Locking Device Replaced  + (19:55:23, 23 May 2025)
• ML20210G586  + (19:55:26, 23 May 2025)
• 05000498/LER-1999-006, :on 990627,automatic Reactor Trip Occurred Due to over-temp delta-temp Actuation.Caused by Degraded flag- Lug Connection for -15 Vdc Power Supply.Licensee re-crimped Failed flag-lug Connector  + (19:55:29, 23 May 2025)
• L-99-028, Responds to NRC 990730 RAI Re 990423 OL Change Request to Allow for Risk Informed Approach for Evaluation of SG Tube Structural Integrity as Described by NEI 97-06, SG Program Guidelines  + (19:55:37, 23 May 2025)