ML24249A337
| ML24249A337 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 09/04/2024 |
| From: | Walker M South Texas |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| NOC-AE-24004062, STI: 35636329 | |
| Download: ML24249A337 (1) | |
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September 4,2024 NOC-AE-24004062 10 CFR 50.55a STI: 35636329 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project Unit 2 Docket No. STN 50-499 lnservice lnspection S marv Reoort - 2RE23 Attached is the South Texas Project Electric Generating Station Unit 2 summary report for inservice inspections performed prior to and during scheduled refueling outage 2RE23 completed in May 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 co Johnson at 361 -972-7 088 or me at361-972-8352.
Mark Walker Engineering Director
Enclosure:
Summary Report for the 2RE23lnservice lnspection of Unit 2 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 12157 Austin, TX 78711
SUNfiMARY REPORT for the 2R823 IHSERVICE IH$PSCTIOH of UHIT 2 SOUTH TEXAS FROJECT ETHCTRIC SEHERATING STATIOH
- trr {}p*r*ting finntP*ny STF HUCLHAR OPERATIHG COMFAHY Spring 2A24
cpvER"sJ{F.,,FT 2RE23 INSERVICE INSPECTION
SUMMARY
REPORT SOUTH TEXAS PROJEGT ELECTRIC GENERATING STATION' UNIT 2 P.O. BOX 289 WADSWORTH, TEXAS 77483 USNRC DOCKET NO:50-499 OPERATING LICENSE NO: NPF80 COMMERCIAL OPERATION DATE: June 19' 1989 Prepared by:
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- ams, ram Owner Reviewed Date*.&; ?LEf*4 ng
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Table I Items With Flaws or Relevant Conditions That Required Evaluation for Continued Service 2RE23 Spring 2024 ASME Cateqorv Item Number Item Deecristion Evaluation Description N-729 84.30 TOP HEAD PENETRATION No. 75 ldentified evidence of leakage on the Unit 2 Reactor Vessel Head (RVH) near Core Exit Thermocouple Nozzle Assembly (CETNA) penetration 75 during a visual examination (VE). CR# 24-3176 E-A E1.32 Leak Chase Channel lnservice lnspection identified multiple junction boxes associated with the Leak chase system 90-18,0degrees were found with standing water, missing sorews, rust, deb.ris and or degraded gasket material.
cR# 24-3030 I
g_goPE COMPONENT SUPPORTS, WELDS, THERMAL FATIGUE' REPAIR/REPLACEMENT, AND SYSTEM PRESSSURE TESTING INSPECTION PROGRAMS {lWB, lWC, lWD, lWE, 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 1 fourth ten-year interval (091252A20-09/0812029), Second period (0gi2sn1z3-Oglz4la}zO;. rnis report covers selected ASME Code Class 1, 2, and 3 bystems/Components. This report is documented in accordance with the requirements of ASME Section Xl Code Gase N-532-5.
Examinations and tests required by the Code are scheduled in accordance with "lnspection Program B" as defined in IWB-2412 for ASME Code Class 1 Sysiems/Components, tWC-2412 for ASME Code Class 2 Systems/Components, IWD-2412tor ASME Code Class 3 Systems/Components, and IWF-2410 component supports.
ASME Code Class 1 components wbre 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 weie examined in accordance with Table IWC-2500-1, Examination Categories. The ASME Code Class 3 Systems/Components were examined in accordance with Table 1WD,2500-1, Examination Categories. Component Supports were examined in accordance with IWF-Table 2500-1, Examination Categories'
FORM OAR-l OWNER'S ACTIVITY REPORT (Code Case N-s32-5)
Report N umber-gA&:&Ele-Plant Sorrlh Tctns Proiect F.lectric Qtrti nn Unit Na.2 Commercial (if ppiible)
Applicable inspec?ian interval lWB. lWC. l\\VDJletE-,{ h,,-; IwE --dth service dale Jujre 19. 1989-Refueling outage no" -43E2 -l---_---
{1st, 2nd, 3'd.4lh, olhri Applicable inspection period IWR IWC IWN IWF_2Nd (tst.2nd,3{d)
Edition and Addnda of Section Xl applicabie to lhe inspecilon plans,n13 Fditinn Date afid revision of inspection plans Santemhar )7 )n)). I Revision I I EditioF and Addenda of Seclion Xl applicable to repairlreplacement activities. if diffrent tnan lhe inspeclion plans M Code Cases used for inspeclion and evalualionj N-51? -:" N -i93 -2. N.;] I 6-l-N-7? 9-6. N-fl0-l " N (rlapplible)
CERTIFICATE OF CONFORMANCE I cedify lhat (a) the statements made in this report are correcl: (b) the examinations snd tesls meel the lnspection Plan as required by the ASME Code.
Xl; and (c) the aclivities and evaluations supporting the completion of lRE23-,confarm lidlueh4g gulpss sumbar!
to the o{ the XI Signed.-*
Augusl-e!2924 6
CERTIFICATE OF INSERVICE INSPECTION
- l. the undersigned. holding a valid cornmission issued by the National Board of Boiler and Pressure Vessel lnspectors and employed by &ulgru-Yl"lt$g-lnSllegcc ryrdl:tggggr,an'ernrnaag
--cf Lvnn. l4nssa{k*rctls have inspected the items described in this Owner's Activity Report and state that, to lhe best of my knovJledge and belief, the Owner has performed all activities represented by this repo!-t in accordance with the requirements of the ASillE Code, Sction Xl.
By signing this cedi{icate, neither the lnspector nor his employer makes any warranly, expressed or implied. concrning :he repairlreplacement activities and evaluations described in this report. Fudherrnore. neither the lnspector nor his employer shall be liable in any rnanner for any persoflal injury or property damage or loss of any kind arising from or connected with this inspection.
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Csmmission G tz-lnspracri SillulFet oate oa-) zl /RLo=..t."
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TABLE 2 ABSTRACT OF REPAIRIREPLACEMENT ACTIVITIES REOUIRED FOR CONTINUED SERVICE 1-1s-060 7 /12/2023 REPLACED VALVE.
ESSENTIAL COOLING WATER REPLACEMENT VALVE 3
1-r"9-048 8/8/2023 REPLACED BOLTS AND FLAT WASHERS.
REACTOR COOLANT PUMP L
REPLACEMENT 1-20-018 6/7/2A23 REPLACED PLUG AND SEAT.
VALVE REACTOR COOLANT REPLACEMENT 1
t-20-o23 REPLACED VALVE sl4/2023 VALVE ESSENTIAL COOLING WATER 3
REPLACEMENT 1-70-027 7 /L2/2023 REPLACED PIPE P IPE ESSENTIAL COOLING WATER REPLACEMENT 3
Lzt-AO2 sl4/2023 REPLACED FLANGE.
ESSENTIAL COOLING WATER REPLACEMENT FLANGE 3
1-21-003 s/412A23 REPLACED FLANGE.
ESSENTIAL COOLING WATER REPLACEMENT FLANGE 3
1-21-0L0 s/4/2073 REPLACED THERMOWELL AND SOL.
THERMOWEL L
ESSENTIAL COOLING WATER 3
REPLACEMENT 1-21-0tt s/4/2023 ESSENTIAL COOLING WATER REPLACED PIPE AND FLANGE, PIPE AND FLANGE 3
REPLACEMENT 1-21-015 7lt2/2023 REPLACED FLANGE.
ESSENTIAL COOLING WATER FLANGE J
REPLACEMENT 7 /12/2023 1-21-016 REPLACED FLANGE.
FLANGE ESSENTIAL COOLING WATER REPLACEMENT 3
s1412023 r-21.-042 REPLACED VALVE.
ESSENTIAL COOLING WATER VALVE 3
REPLACEMENT 1,-22-0Q3 8/8/2A23 INSTALL PATCH MATERIAL ON VALVE.
FEEDWATER REPAIR VALVE 2
1.-22-005 3/20/2023 REPLACED PLATE.
ESSENTIAL COOLING WATER 3
REPLACEMENT VALVE 1-22-008 3/20/2023 RFPLACED END COVERS AND CHANNEL HEAD.
COOLER STANDBY DIESEL GENERATOR 3
REPLACEMENT 1-22-Ott REPLACED END COVERS AND CHANNEL HEADS 3l2A/2023 STANDBY DIESEL GENERATOR COOLER 3
REPLACEMENT 7 /12/2023 1--22-012 REPLACED EXPANSION JOINT.
ESSENTIAL COOLING WATER EXPANSION JOINT 3
REPLACEMENT b22-A13 81812023 REPLACED PIPE, FLANGES, AND BOLTING.
PIPE STANDBY DIESEL GENERATOR 3
REPLACEMENT T22-A14 7 /1212023 REPLACED PLUG, CAGE, AND 5EAT.
VALVE REACTOR COOLANT 1
REPLACEMENT
TABLE 2 ABSTRACT OF REPAI R/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE t-22-015 REPLACED PIPE, FLANGES, AND U-STRAPS.
8/812023 ESSENTIAL COOLING WATER PIPE 5
REPLACEMENT 8/8/2023 TZz-A18 REPLACED PIPE.
ESSENTIAL COOLING WATER REPLACEMENT PIPE 3
t-22-019 PERFORMED WELD BUILDUP, 8/8/2023 WELDOLET ESSENTIAL COOLING WATER 3
REPAIR 7-22-020 818/2023 PERFORMED WELD BUILDUP WELDOLET ESSENTIAL COOLING WATER 3
REPAIR t-22-021, 8/s12073 REPLACED VALVE VALVE ESSENTIAL COOLING WATER 3
REPLACEMENT 1"-22-OZ2 7/t2/2023 ESSENTIAL COOTING WATER REPLACED FASTENERS.
EXPANSION JOINT 3
REPLACEMENT s/3/2023 r-22-023 REMOVE VALVE, REACTOR COOLANT VALVE 1
REPAIR 51312023
'J.-22-025 INSTALL VALVE.
REACTOR COOLANT REPLACEMENT VALVE 1
t-22-026 sle/2023 REPLACED VALVE VALVE CHEMICAL VOLUME CONTROL 2
REPLACEMENT t-22-028 7lL2/2023 REPLACED VALVE.
RESIDUAL HEAT REMOVAL REPLACEMENT VALVE 2
L22-429 sB/2a23 REPLACED VATVE BONNET.
VALVE MAIN STEAM 2
REPLACEMENT 1.-22-032 8/8/2023 REACTOR COOLANT REPLACED CARTRIDGE SEAL HOUSING PUMP 1
REPLACEMENT 1-22-043 REPLACED VALVE 6/8/2023 SAFETY IN.JECTION VALVE 1
REPLACEMENT 1-22-044 61812023 REPLACED PIPE.
PI PE CHEMICAL VOLUME CONTROL 1
REPLACEMENT t-22-O45 4/L2/2A23 SPENT FUEL POOL COOLING REPLACED PLUG.
REPLACEMENT HEAT EXCHANGER 3
8/e/2023 r-22-A47 REPLACED VALVE.
ESSENTIAL COOLING WATER VALVE 3
REPLACEMENT 1--23-002 3/2s/2023 REPLACED VALVE, VALVE ESSENTIAL COOLING WATER 3
REPLACEMENT 1-23-008 7 /12/2023 REACTOR COOLANT FABRICATE SEAL CAP.
REPAIR VALVE 2
sl4/2023 1-23-010 REPLACED VALVE.
COMPONENT COOLING REPLACEMENT VATVE 3
1-23-011 sls/2023 CHEMICAL VOLUME CONTROL REPLACED PLUG, REPTACEMENT VALVE 2
5/3/2023 7-23-012 REPLACED THERMOWELL AND SOL.
ESSENTIAL COOLING WATER REPLACEMENT THERMOWEL L
3 2
TABLE 2 ABSTRACT OF REPAI R/REPLACEMENT ACTIVITI ES REQUIRED FOR CONTINUED SERVICE L-23-A16 4/L2/2023 REPLACED SNUBBER.
FEEDWATER REPLACEMENT SNUBBER 2
r-23-0t7 6/812023 REPLACED PIPE.
PIPE REACTOR COOLANT L
REPLACEMENT 41t212023 t-23-O20 REPLACED SNUBBER.
REPLACEMENT 3