ML26029A366
| ML26029A366 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 01/29/2026 |
| From: | Holtec Palisades |
| To: | Marlayna Vaaler Doell Office of Nuclear Reactor Regulation |
| Wall S | |
| References | |
| Download: ML26029A366 (0) | |
Text
www.holtec.com Palisades MOV Program Plan
www.holtec.com l Page 2 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL
Introductions
Holtec/Palisades
- Stephanie Liska, Manager, Programs & Analysis
- Mike Engel, Supervisor, Systems & Components
- Adam Ilkka, MOV Engineer
- Jeremy Quinn, AOV Engineer
- Roger Champion, Inservice Testing Engineer
- Ronald Penna, Senior Valve Project Manager
- Robert Dailey, AOV Programs Consultant
www.holtec.com l Page 3 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Meeting Purpose and Goal Purpose
- Provide an overview of the restoration of the MOV Program at Holtec Palisades
- Present Holtec Palisades approach towards NRC GL 89-10, NRC GL 96-05, and ASME OM Code Appendix III in preparation of Palisades restart Goal
- Obtain NRC feedback and insight on the following:
- Proposed approach toward MOV Program restoration and implementation of ASME OM - 2020 Appendix III at Palisades
www.holtec.com l Page 4 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Overview
- Palisades commenced commercial operation in 1971
- License renewal granted on January 1, 2007
- Due to market conditions, reactor shut down for retirement on May 20, 2022
- Holtec announced intention to return Palisades to commercial service early 2023
- Announced Holtec signed a power agreement with Wolverine Power Cooperative in September 2023
- Presented Palisades restart overview and regulatory path in February 2023
- Submitted request for exemption from 10 CFR 50.82 on September 28, 2023
www.holtec.com l Page 5 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Background on MOV Program
- Palisades has 26 MOVs in safety-related systems outlined in ENG-539, Motor Operated Valve Program, that are subject to the requirements of NRC Generic Letter 89-10.
- Engineering Safeguards (ESS)
- Primary Coolant (PCS)
- MO-1042A - Power Relief Isolation Valve
- MO-1043A - Power Relief Isolation Valve
- Chemical Volume Control (CVCS)
MO-2160 - Boric Acid Pump P-56A/B Feed Isolation
- MO-3066 - Redundant HPSI to Reactor Coolant Loop 1B
- MO-3068 - Redundant HPSI to Reactor Coolant Loop 1A
- MO-3072 - HPSI Train 2/Charging X-Conn
- MO-3080 - HPSI Hot Leg Injection Mode Select Valve
- MO-3081 - HPSI Hot Leg Injection Mode Select Valve
- MO-3082 - HPSI Hot Leg Injection Mode Select Valve
- MO-3083 - HPSI Hot Leg Injection Pressure Letdown
- MO-3007 - HPSI to Reactor Coolant Loop 1A
- MO-3009 - HPSI to Reactor Coolant Loop 1B
- MO-3011 - HPSI to Reactor Coolant Loop 2A
- MO-3013 - HPSI to Reactor Coolant Loop 2B
- MO-3008 - LPSI to Reactor Coolant Loop 1A
- MO-3010 - LPSI to Reactor Coolant Loop 1B
- MO-3012 - LPSI to Reactor Coolant Loop 2A
- MO-3014 - LPSI to Reactor Coolant Loop 2B
- MO-3015 - Shutdown Cooling PCS Block
- MO-3016 - Shutdown Cooling PCS Block
- MO-3062 - Redundant HPSI to Reactor Coolant Loop 2B
- MO-3064 - Redundant HPSI to Reactor Coolant Loop 2A
www.holtec.com l Page 6 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Restoration Plan for MOV Program All Major PMs and Static Diagnostic Testing are in scope to be completed for Program MOVs.
Current statues of restart scope has 23 of 26 program MOVs showing complete for Major PM and Static Diagnostic Testing.
3 remaining MOVs requiring Major PM and Static Diagnostic Testing include VOP-2160, VOP-3189, and VOP-3198.
VOP-2160: Per EC-63774, NFPA 805A, Modification to change Motor Pinion Gear, actuator worm shaft gear, and spring pack.
Includes Static Diagnostic Testing.
VOP-3189 and VOP-3198: Major PM and Static Diagnostic Testing.
www.holtec.com l Page 7 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Surveillance Testing, per QO-5 VALVE TEST PROCEDURE and QO-6 COLD SHUTDOWN VALVE TEST PROCEDURE, have been completed for 15 of 26 Program MOVs.
Remaining Surveillance Testing in scope to be completed as plant conditions change.
Restoration Plan for MOV Program
www.holtec.com l Page 8 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Corrective Actions for MOV Program Issues identified during Major PMs and Static Diagnostic Testing and documented per the Corrective Action process:
Minor Stem Nut Wear identified on VOP-3011 and VOP-3013. (PAL-02980)
Action Taken: Stem Nut Wear on VOP-3011 and VOP-3013 evaluated and determined to be within procedural requirement, per ENG-109 MOV Test Data Review, for replacement within next 2 refueling cycles. Work orders planned to replace stem nuts in next refueling outage. (00586830 & 00586831)
MOV Testing indicated valve repack required for MO-3190. (CR 25003028)
Action Taken: Work task updated to repack valve at time of identification.
MOV Testing indicated valve repack and actuator overhaul for MO-3015. (PAL-07953)
Action Taken: Work Order planned to Repack Valve and Rebuild Actuator per standard work management process.
(51599299)
MOV Testing identified Trend Data exceeded procedure criteria for CDOT for MO-3008, MO-3010, MO-3012, and MO-3014. (CR 25002907)
Action Taken: Increased CDOTs identified as a known condition per ENG-539 MOV Program. Increased CDOTs attributed to design changes to breaker design. PMs for breakers are in scope to be completed.
www.holtec.com l Page 9 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL MOV Program Restoration Timeline
- Interval extensions allowed by ASME OM, ISTA-3120(e) from OM for plants out of service continuously for 6 months or more
- Start of new interval (6th IST) to coincide with the end of the extended intervals
- New CORs will be selected within 18 months of the interval start dates to comply with 10 CFR 50.55a(f)(4)(ii) and (g)(4)(ii). Marked as Code Lock on the timeline
- MOV Program to implement ASME OM-2020 Appendix III within 18 months of the interval start date.
2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 IST Valves Decommissioning Date 5/22/2022 Original 5th Interval Extended 5th Interval 6th Interval ASME Code Lock per 10 CFR 50.55a
www.holtec.com l Page 10 HOLTEC INTERNATIONAL l PROPRIETARY AND CONFIDENTIAL Summary of updates from ASME OM Code 2012 Appendix III to ASME OM Code 2020 Appendix III:
Palisades MOV and IST Program will require updates to ensure local position verification of all valves with remote position indication per requirements in Appendix III.
Palisades to evaluate MOV program population for Code Case OMN-28 for alternative position verification for valves not susceptible to stem-disk separation.
Palisades Implementation of ASME OM-2020 Appendix III Feature OM Code 2012 Appendix III OM Code 2020 Appendix III Valve position verification No local check required Required local check + supplements Code Case OMN-28 integration Not applicable Permitted for non-stem-disk separation valves Alignment with ISTC-3700 Partial reference Full Alignment Scope Light-water reactors LWRs and SMRs with expanded applicability
www.holtec.com l Page 11 Thank You 27780 Blue Star Highway Covert, MI 49043