ML21196A492
| ML21196A492 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 07/15/2021 |
| From: | Georgeson C South Texas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NOC-AE-21003819, STI:35187483 | |
| Download: ML21196A492 (10) | |
Text
Nuclear Operating Company South Texas Pmlcct Electric Generating Station P.O. Bos 289 Wadsnvrlh. Texas 77483 July 15,2021 NOC-AE-21003819 10CFR50.55a STI:35187483 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project Unit 2 Docket No. STN 50-499 Inservice Inspection Summary Report - 2RE21 Attached is the South Texas Project Electric Generating Station Unit 2 summary report for inservice inspections performed prior to and during scheduled refueling outage 2RE21 completed in April 2021. 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.
If there are any questions regarding this report, please contact All Albaaj at (361) 972-8949 or me at (361) 972-7806.
'*H^
Chris Georgesor General Manager, Engineering aa
Enclosure:
Summary Report for the 2RE21 Inservice Inspection of Unit 2 South Texas Project Electric Generating Station ec:
Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 East Lamar Boulevard Arlington, TX 76011-4511 Chief Inspector Texas Department of Licensing and Regulation Boiler Program P.O. Box 12157 Austin, TX 78711
SUMMARY
REPORT for the 2RE21 INSERVICE INSPECTION of UNIT 2 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Nuclear Operating Company STP NUCLEAR OPERATING COMPANY Spring 2021
COVER SHEET 2RE21 INSERVICE INSPECTION
SUMMARY
REPORT SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION, UNIT 2 P.O. BOX 289 WADSWORTH, TEXAS 77483 USNRC DOCKET NO: 50-499 OPERATING LICENSE NO: NPF-80 COMMERCIAL OPERATION DATE: JUNE 19, 1989 Prepared by:
Eric Lahtz^lSl^fbgram Owne Reviewed by:
Date5<S3w^31 Date ^1^^\\2\\
Clay1'bn^B6nno(,Supe esting 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 Xl that is applicable to the South Texas Project, Unit 2, fourth ten-year interval (09/25/2020-09/08/2029), first period (09/25/2020-09/24/2023).
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 Xl 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 forASME Code Class 2 Systems/Components, IWD-2412 for ASME Code Class 3 Systems/Components, and IWF-2410 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.
TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRE EVALUATION FOR CONTINUED SERVICE 2RE21 SPRING 2021 ASME Category F-A B-D Item Number F1.20C B3.110 Item Description MS-2001-HL5014:Main Steam Spring Hangar
[2-CS-224000]
Safety Nozzle to Shell weld PRZ-2-N4C
[Summary 2-WD-011000]
Evaluation Description Inservice Inspection identified Spring Hangar MS-2001-HL5014 setpoint out of tolerance per procedure.
[VTC-2021-016]
Corrective Action to perform Evaluation perASME Xl IWF-3122.3. Results determined Acceptable for Service at current setpoint.
[21-3514-2]
Work Order adjusted Spring Hangar back to original design setpoint.
[21-3514-1]
Historical: 2RE20 - Inservice Inspection identified an area of interest, requiring evaluation.
[UT-2019-031]
Analytical Evaluation performed by Westinghouse determined indication is acceptable in accordance with IWB-3132.3 and IWB-3600. (applicable until 2RE22)
[LTR-SDA-19-095-P Rev 0] - [STI 34937975]
Re-examination scheduled for 2RE21 in accordance with IWB-2420(b) and (c).
Current: 2RE21 Examination found flaw did not increase in size.
[UT-2021-025]
Westinghouse Analytical Evaluation to accept condition for Life of Plant scheduled prior to 2RE22.
[CR-19-11865-8]
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE CLASS 3
2 3
3 3
3 3
1 2
2 3
2 1
CORRECTIVE MEASURE REPLACEMENT REPAIR REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPAIR REPLACEMENT ITEM DESCRIPTION VALVE VALVE VALVE STRAINER VALVE FLANGE VALVE SEAL PACKAGE VALVE VALVE VALVE VALVE VALVE SYSTEM AUXILIARY FEEDWATER COMPONENT COOLING ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER REACTOR COOLANT CHEMICAL VOLUME CONTROL MAIN STEAM ESSENTIAL COOLING WATER CONTAINMENT HVAC REACTOR COOLANT DESCRIPTION OF WORK Installed new by-pass body.
Reworked Spare valve.
Valve internals replaced.
Replaced packing fasteners, cover fasteners, back wash arm/shat assembly.
Replaced valve.
Replaced flange.
Replace valve.
Replaced Seal Pkg Plug replaced.
Plug replaced.
Replace valve.
Refurbished valve and return to warehouse.
Removed Old Valve.
DATE COMPLETED 10/12/2020 11/1/2019 2/12/2020 1/24/2020 1/22/2020 2/26/2020 10/20/2020 04/09/2021 4/4/2021 4/8/2021 2/27/2021 04/12/2021 4/3/2021 REPAIR / REPLACMENT PLAN 2-18-019 2-19-034 2-19-043 2-20-003 2-20-004 2-20-005 2-20-007 2-20-009 2-20-012 2-20-017 2-20-019 2-20-021 2-20-026
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE CLASS 1
3 3
3 3
3 3
3 3
3 3
3 3
3 3
3 CORRECTIVE MEASURE REPLACEMENT REPAIR REPLACEMENT REPLACEMENT REPAIR REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT ITEM DESCRIPTION VALVE THERMOWELL PIPE & FLANGE THERMOWELL FLANGE VALVE VALVE VALVE PIPE PIPE PIPE FLANGE TRANSMITTER VALVE VALVE VALVE SYSTEM REACTOR COOLANT ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER CHEMICAL VOLUME CONTROL DIESEL OIL ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER DESCRIPTION OF WORK Installed New Valve.
Thermowell not replaced.
Welding repair performed.
Spool replaced.
Thermowell replaced.
Removed flange from damaged spool.
Replaced valve with blind flange.
Replaced valve with blind flange.
Replaced valve with pipe spool.
Replaced piping spool.
Replaced tee with straight piping.
Piping Spool Replaced.
Replaced Flange.
Replaced transmitter.
Replaced valve.
Replaced valve.
Replaced valve.
DATE COMPLETED 4/4/2021 10/23/2020 10/21/2020 10/21/2020 2/9/2021 2/27/2021 2/27/2021 2/27/2021 2/27/2021 2/27/2021 1/29/2021 2/27/2021 12/6/2020 1/29/2021 2/22/2021 2/27/2021 REPAIR / REPLACMENT PLAN 2-20-027 2-20-030 2-20-031 2-20-032 2-20-035 2-20-036 2-20-037 2-20-038 2-20-039 2-20-040 2-20-041 2-20-042 2-20-043 2-20-044 2-20-045 2-20-046
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE CLASS 3
3 3
3 3
3 3
3 3
3 CORRECTIVE MEASURE REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPAIR REPAIR ITEM DESCRIPTION VALVE PIPE & FLANGE VALVE VALVE PIPE PIPE VALVE VALVE SPRING CAN SNUBBER SYSTEM ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER ESSENTIAL COOLING WATER FEEDWATER FEEDWATER DESCRIPTION OF WORK Replaced valve.
Replaced spools, flanges, and fasteners.
Valve replaced with piping spool.
Replace valve.
Replaced piping spool.
Replaced piping spool.
Replaced Valve Seat.
Machined Valve Plates.
Replaced valve.
Spring Can Support adjustment.
Feed Water Support/Snubber removed.
DATE COMPLETED 2/27/2021 2/27/2021 2/27/2021 2/27/2021 2/27/2021 2/27/2021 2/11/2021 01/27/2021.
4/9/2021 4/9/2021 REPAIR / REPLACMENT PLAN 2-20-047 2-21-002 2-21-003 2-21-005 2-21-006 2-21-007 2-21-010 2-21-011 2-21-014 2-21-015
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE CLASS 2
1 2
2 CORRECTIVE MEASURE REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT ITEM DESCRIPTION VALVE SNUBBER SNUBBER VALVE SYSTEM COMPONENT COOLING REACTOR COOLANT MAIN STEAM CONTAINMENT HVAC DESCRIPTION OF WORK Replaced valve with new one.
Replaced Snubber.
Replaced Snubber.
Replaced valve seat.
DATE COMPLETED 3/11/2021 4/7/2021 4/10/2021 4/11/2021 REPAIR/REPLACMENT PLAN 2-21-017 2-21-022 2-21-023 2-21-024