ML25069A689
| ML25069A689 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 03/10/2025 |
| From: | Walker M South Texas |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| NOC-AE-25004092 | |
| Download: ML25069A689 (1) | |
Text
-fr March 10,2025 NOC-AE-25004092 10 CFR 50.55a STI: 35715234 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project Unit 1 Docket No. STN 50-498 lnservice lnspection Summary Report - 1RE25 Attached is the South Texas Project Electric Generating Station Unit 1 summary report for inservice inspections performed prior to and during scheduled refueling outage 1RE25 completed in November 2024. This summary report satisfies the reporting requirements of American Society of Mechanical Engineers ASME Code Section Xl, Article IWA-6230.
There are no commitments in this letter lf there are any questions regarding this report, please contact Zachary Dibbern at 361-972-4336 or me at361-972-8352.
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Mark Walker Engineering Director
Enclosure:
Summary Report for the 1RE25 lnservice lnspection of Unit 1 South Texas Project Electric Generating Station cc:
Regional Administrator, Region lV U.S. Nuclear Regulatory Commission 1600 E. Lamar Boulevard Arlington, TX 7601 1-4511 Chief lnspector Texas Department of Licensing and Regulation Boiler Program P.O. Box 12'157 Austin, TX 78711
SUMMARY
REPORT for the 1RE25 INSERVICE INSPECTION of UNIT 1 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Nuclear Operating Company STP NUCLEAR OPERATING COMPANY Fall 2024
COVERSHEET 1 RE25 INSERVICE INSPECTION
SUMMARY
REPORT SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION, UNIT 1 P.O. BOX 289 WADSWORTH, TEXAS 77483 USNRC DOCKET NO: 50-498 OPERA TING LICENSE NO: NPF-76 COMMERCIAL OPERATION DATE: AUGUST 25, 1988 Prepared byM:9 /1-------
Daniel Moon, ISi Program Owner Date 3/6/2025 Reviewed by: ~
Q1/2 /
Date 3/6/2025 Robert Berg, Supervisor, T'isting / Programs
SCOPE COMPONENT SUPPORTS, WELDS, THERMAL FATIGUE, REPAIR/REPLACEMENT, AND SYSTEM PRESSSURE TESTING INSPECTION PROGRAMS (IWB, IWC, IWD, IWE, IWF)
The examinations summarized in this report were performed in accordance with the 2013 Edition of the ASME Code,Section XI that is applicable to the South Texas Project, Unit 1 fourth ten-year interval (09/25/2020-09/08/2029), second period (09/25/2023-09/24/2026). This report covers selected ASME Code Class 1, 2, and 3 Systems/Components. This report is documented in accordance with the requirements of ASME Section XI Code Case N-532-5.
Examinations and tests required by the Code are scheduled in accordance with "Inspection Program B" as defined in IWB-2412 for ASME Code Class 1 Systems/Components, IWC-2412 for ASME Code Class 2 Systems/Components, IWD-2412 for ASME Code Class 3 Systems/Components, and IWF-241 0 component supports.
ASME Code Class 1 components were examined as prescribed by Table IWB-2500-1 and the applicable Examination Categories, which established the examination frequency at each refueling outage. The ASME Code Class 2 Systems/Components were examined in accordance with Table IWC-2500-1, Examination Categories. The ASME Code Class 3 Systems/Components were examined in accordance with Table IWD-2500-1, Examination Categories. Component Supports were examined in accordance with IWF-Table 2500-1, Examination Categories.
FORM OAR-1 OWNER'S ACTIVITY REPORT (Code Case N-532-5)
Report Number~O=AR~~-l=RE=2=5 ____________________________________ _
Plant South Texas Project Electric Generating Station Unit No._,_1 _____________ Commercial service date August 25, 1988 Refueling outage no. ~l,.,R.,_,E=2=5'---
(if applicable}
Applicable inspection interval IWB. fWC. IWD, !WF - 4th ; ~IW~E~-4
--'-th _______ _____ _______ _____
(1st, 2nd, 3rd, 4th, other}
Applicable inspection period IWB. I WC. IWD. IWF - 2nd (1st, 2nd, 3rd}
Edition and Addenda of Section XI applicable to the inspection plans ~2=0~1=3~E=d=it1=*o~n~ -
Date and revision of inspection plans September 25. 2022
/
Revision 11 Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans N/A Code Cases used for inspection and evaluation: N-5,32-5 N-593-? N-TI 6-1 N-7?9-6 N-770-5 N:-722-)
(ifapplicable)
CERTIFICATE OF CONFORMANCE I certify that (a) the statements made in this report are correct; (b) the examinations and tests meet the Inspection Plan as required by the ASME Code,Section XI; and (c) the repair/replacement activities and evaluations supporting the completion of =l =R=E=2=5 _ ___________ conform to the requirements of the ASME Code,Section XI.
(refueling outage number}
Signed
/'-""-----
ISi Pro am En ineer Date March 6, 2025 (Owner or Owner's Designee, Title}
CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by Bureau Veritas Insurance and Inspection Companv of-"L'-'v--"nn"-"-'. M=a..,ss,.,,a""'ch:.:.:us=et"'ls'--------- --- -----
have inspected the items described in this Owner's Activity Report and state that, to the best of my knowledge and belief, the Owner has performed all activities represented by this report in accordance with the requirements of the ASME Code,Section XI.
By signing this certificate, neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the repair/replacement activities and evaluations described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or loss of any kind arising from or connected with this inspection.
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(lnspector's ~re)
(National Board Number and Endorsement)
Date ~J {.,. J zoz.S-(07/15)
C-C C3.30 Table 1 Items With Flaws or Relevant Conditions That Required Evaluation for Continued Service Residual Heat Removal Pump 1A/ IWA-2 1RE25 Fall 2024 During lnservice Inspection Five rounded indications were identified on the RHR Pump 1A integral weld attachment. CR# 24-10431
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE
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PIPING REPLACEMENT CONTROL THERMOWELL 12/10/24 1-19-016 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER FLANGE 7/20/2023 1-20-022 REPLACED 3
PIPING REPLACEMENT CHARGING SPOOL 12/7/2023 1-22-030 ESSENTIAL COOLING REPAIR 3
PIPING REPAIR WATER FLANGE 9/21/2023 1-22-036 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER CHECK VALVE 5/15/2023 1-23-015 REPLACED RESIDUAL HEAT ELBOW AND 2
PIPING REPLACEMENT REMOVAL PIPING 10/17/2024 1-23-019 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER CAP 7/19/2023 1-23-024 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER THERMOWELL 7/19/2023 1-23-026 ESSENTIAL COOLING REPAIR 3
PIPING REPAIR WATER PIPING 7/18/2023 1-23-028 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER THERMOWELL 7/19/2023 1-23-029 ESSENTIAL COOLING 3
VALVE REPAIR WATER REPAIR VALVE 5/8/2023 1-23-030 ESSENTIAL COOLING 3
PIPING REPLACEMENT WATER REPAIR VALVE 8/9/2023 1-23-031 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER FITTINGS 8/9/2023 1-23-032 ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 7/20/2023 1-23-033 ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 8/9/2023 1-23-034 ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 8/9/2023 1-23-035
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE
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ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 8/9/2023 1-23-036 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER THERMOWELL 6/17/2023 1-23-037 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER FLANGE 6/17/2023 1-23-038 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER FLANGE 7/19/2023 1-23-039 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER STUDS 8/9/2023 1-23-040 ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 12/7/2023 1-23-041 ESSENTIAL COOLING REPLACED 3
VALVE REPLACEMENT WATER VALVE 12/7/2023 1-23-042 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER FLANGE 12/7/2023 1-23-043 ESSENTIAL REPLACED COOLING PIPING AND 3
PIPING REPLACEMENT WATER FLANGE 12/7/2023 1-23-044 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER THERMOWELL 12/7/2023 1-23-045 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER TH ER MOWELL 12/8/2023 1-23-047 ESSENTIAL COOLING REPLACED 3
PIPING REPLACEMENT WATER THERMOWELL 12/7/2023 1-23-048 REACTOR FABRICVATE 1
PIPING REPLACEMENT CONTROL TIE ROD PINS 6/13/2024 1-23-049 ESSENTIAL COOLING REPAIR 3
PIPING REPAIR WATER FLANGE 1/15/2024 1-23-050 ESSENTIAL COOLING REPAIR 3
PIPING REPAIR WATER FLANGE 1/17/2024 1-23-051 REPLACE UPPER HEAT REACTOR BEARING OF 2
EXCHANGER REPLACEMENT CONTROL OIL COOLER 10/31/2024 1-24-004 2
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VALVE 2
FASTENER HEAT 2
EXCHANGER 2
VALVE 2
VALVE 1
VALVE 1
VALVE 3
PIPING 3
PIPING 3
PIPING HEAT 1
EXCHANGER HEAT 1
EXCHANGER 3
PIPING 3
THERMOWELL 3
THERMOWELL 3
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE 1ur --
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REACTOR REFURBISH REPAIR CONTROL VALVE 10/24/2024 1-24-006 REACTOR REPLACED REPLACEMENT CONTROL VALVE 10/29/2024 1-24-007 CHEMICAL VOLUME REPLACED REPLACEMENT CONTROL FASTENERS 10/16/2024 1-24-008 REPLACED CHEMICAL FASTENERS VOLUME PLUGGED REPLACEMENT CONTROL TUBES 10/16/2024 1-24-009 REPLACED VALVE REPAIR FEEDWATER INTERNALS 10/28/2024 1-24-013 REPLACED VALVE REPAIR MAIN STEAM INTERNALS 3/2/2024 1-24-015 REPLACED REACTOR VALVE REPAIR CONTROL INTERNALS 10/31/2024 1-24-016 REPLACED REACTOR VALVE REPAIR CONTROL INTERNALS 10/27/2024 1-24-017 ESSENTIAL REPLACED COOLING PIPING AND REPLACEMENT WATER FITTINGS 3/11/2024 1-24-019 ESSENTIAL REPLACED COOLING PIPING AND REPLACEMENT WATER FITTINGS 9/18/2024 1-24-020 REPLACED ESSENTIAL
- PIPING, COOLING SPOOLS AND REPLACEMENT WATER FITTINGS 6/4/2024 1-24-021 STEAM WELD ACCESS REPAIR GENERATOR COVER 10/27/2024 1-24-024 STEAM WELD ACCESS REPAIR GENERATOR COVER 10/27/2024 1-24-025 ESSENTIAL REPLACED COOLING PIPING AND REPLACEMENT WATER FITTINGS 8/22/2024 1-24-027 ESSENTIAL COOLING REPLACED REPLACEMENT WATER THERMOWELL 8/7/2024 1-24-028 ESSENTIAL COOLING REPLACED REPLACEMENT WATER THERMOWELL 8/6/2024 1-24-029
3 THERMOWELL 4
THERMOWELL 3
PIPING VALVE 1
VALVE 1
VALVE VALVE 1
PUMP PUMP 3
SNUBBER 1
VALVE 1
VALVE 2
SNUBBER 2
PIPING 2
PIPING HEAT 3
EXCHANGER 2
VALVE 2
PIPING 4
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE REPLACEMENT REPLACEMENT REPLACEMENT REPAIR REPLACEMENT REPAIR REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER REACTOR CONTROL REACTOR CONTROL REACTOR CONTROL REACTOR CONTROL REACTOR CONTROL REACTOR CONTROL SNUBBER REACTOR CONTROL REACTOR CONTROL FEEDWATER SAFETY INJECTION SAFETY INJECTION CHARGING CONTAINMENT HVAC CONTAINMENT HVAC REPLACED THERMOWELL REPLACED THERMOWELL REPLACED EXPANSION JOINT REFURBISH VALVE REPLACE VALVE REFURBISH VALVE REPLACE VALVE REPLACE SEALS REPLACE SEALS REPLACE SNUBBER REPLACE VALVE REPLACE VALVE REPLACE SNUBBER REPLACE PIPING REPLACE PIPING REPLACE STUDS AND NUTS REPLACE VALVE INSTALL FLANGE 8/5/2024 6/7/2024 8/6/2024 10/24/2024 10/29/2024 10/24/2024 10/29/2024 10/27/2024 10/30/2024 11/3/2024 10/31/202 10/27/2024 11/3/2024 10/19/2024 10/22/2024 11/3/2024 3/3/2025 3/3/2025 1-24-030 1-24-033 1-24-037 1-24-039 1-24-041 1-24-042 1-24-043 1-24-044 1-24-045 1-24-052 1-24-054 1-24-055 1-24-056 1-24-057 1-24-058 1-24-059 1-24-062 1-24-063