NL-21-0646, Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 1R30

Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 1R30

ML21197A163
Person / Time
Site:	Farley
Issue date:	07/16/2021
From:	Gayheart C Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-21-0646
Download: ML21197A163 (6)

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5)RUP2$52ZQHUV$FWLYLW\5HSRUW FORMOAR-1OWNER'S ACTMTYREPORT Report Number Plant UnitNo.1 (if applicable)

Commercial service date W Refueling outage no. 1.R30 Current inspection interval J (1st,2nd,3rd, other) 4th, Current inspection period d (1st,2nd,3rd)

EditionandAddenda ofSection XIapplicableto the inspection plans:

Dateandrevision ofinspection plans:

EditionandAddenda ofSection XIapplicable torepair/replacement activities, if different than theinspection plans: h CodeCasesusedfor inspection andevaluation:

applicable, (if including cases modified by CaseN-532andlater revisions)

CERTIFICATE OFCONFORMANCE Icertify (a) that thestatements madeinthis reportarecorrect; (b) theexaminations andtests meetthe inspection Plan asrequired bythe ASMECode, conform Section tothe Xt; requirements (c) and therepair/replacement XI.

ofSection activitiesandevaluations supporting the completionofJ (retuenng outage number)

SignedR.M.McAdams Owner orOwner'sDesignee, Title

. n ineerin Director Date /

CERTIFICATE OFINSERVICE INSPECTION theundersigned, I, holding avalidcommission issued bytheNational Board ofBoiler andPressure Vessel Inspectors and employed byT ofHaartfordJL haveinspected theitems describedinthis Owner's Activity Report, andstatethat,tothe bestofmyknowledge andbelief, theOwner hasperformed all activities represented bythisreport inaccordance withtherequirements ofSection XI.

Bysigning thiscertificate neither theInspector norhis employer makes anywarranty, expressed orimplied, concerning the repair/replacementactivities andevaluationdescribed inthis report. Furthermore, neither theInspector norhis employer shallbe liable inanymanner for anypersonal injury orproperty damage ora loss ofanykind arising fromorconnected with this inspection.

RodneSenn ' Commission 12603 C IN R Inspector'sSignature (National Board NumberandEndorsement)

Date O 2- 02

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5)RUP2$52ZQHUV$FWLYLW\5HSRUW Table 1 FarleyNuclear Plant Unit 1,5thinterval, 2ndPeriod, 1stReport Items withFlawsorRelevant Conditions That Required Evaluation forContinued Service Examination Item Description Evaluation Description Category and Item Number D-B A through-wall leak wasnoted inthe8" CR10675320 documents the D2.10 Service Water piping oftheUnit 1B evaluation foroperability. Thelocation train Service Water pumpsmini-flow,wasisolated andisbeing tracked per downstream ofQ1P16V579,BTRNSW clearance order1-DT19-P16-00607.

MINIFLOW.

D-B A through-wall leak wasnoted onthe6" CR10735066 documents the D2.10 ServiceWater piping ofthe1CServiceevaluation foroperability. Theflaw was Water pump mini-flow line onanelbow evaluated inaccordance with Code inthehorizontal section ofpiping that CaseN-513-4, reference Request for ties intothemain Service Water headerEngineering Review (RER) between Q1P16V506 and Q1P16V507 SNC1115980, andthepiping waslater andisupstream ofthe mini-flow replaced byworkorder SNC930301.

isolation valve Q1P16V575.

D-B A through-wall leak wasnoted on the CR10742390 documents the D2.10 Service Water return piping from the 2B evaluation foroperability, reference Diesel Generator near theflange Prompt Determination ofOperability upstream ofvalve Q1P16V593. This (PDO)2-20-01. Theflaw was wasidentified during theUnit 2 ISI evaluated inaccordance with Code pressure test 160.28-3. Note: This was Case N-513-4, reference RER also included in2R27OAR-1Report, SNC1121545-01, andtheimpacted since wasidentified it during Unit 2 piping was later replaced bywork order ressure test oncommon iin SNC1126770 andSNC1121637.

D-B A through-wall leak ofless than 1drop CR10777229 documents the D2.10 perminute wasdiscovered between the evaluation for operability. Thepiping 1BComponent Cooling Water (CCW) wasreplaced by work order Heat Exchanger (HX) andService SNC1144530.

Water vent valveQ1P16V004B. The through-wall indication isapproximately 2"above thesocket weldwhere theline attaches totheheat exchan er.

E-A During theContainment Moisture CR10785469 documents the condition, E1.30 Barrier visual exam,a small section of Indication Notification Form(INF) I concrete toconcrete interface was F1-001 documents theevaluation, and found tohave degraded sealant. This WOSNC1091821 repaired moisture approximately 12"section islocated on barrier sealant.

the105' outer circumference ofthebio-wall near Az 15.

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5)RUP2$52ZQHUV$FWLYLW\5HSRUW F-A During the visual inspectionsupportCR10790278 for documentsthecondition F1.40 D170239-SW 501A, SNC877640-340,andevaluation along withINFI-21-F1-(Unit 1 B-train Service WaterStrainer002.Theanchor bolt maintains still Q1P16F501A), oneanchor bolt thread engagement andstructural (stud/nut) wasfound tohave corrosion which integrity issufficient tomaintain andloss ofcross-sectional areagreaterthe load full bearing ofthebolt capacity than 10%.Thethree remaining anchorandsupport andisacceptableperIWF-bolts areacceptable. 3410(b)(5)

Roughness orgeneral corrosion which doesnotreduce the loadbearing ofthe capacity support.

F-A Replacement 32"Main SteamLoop1 CR10790795 documentsthecondition F1.20C spring can pipingsupport ALA2-4100-andINFI-21-F1-003 andRER MS3-H6 hot load wasfound setting out SNC1152832-01 document the ofadjustment. Themain steamspringevaluation.Thehot loadsettings were canMS3-H6 was replaced in1R30, notwithin theacceptance standardsin Thehot load setting wasfoundtobeout accordance ASMESection with XI, oftolerance during the NOPT This IWF-3410(a)(4). condition was walkdown. bydesign evaluated engineering in accordancewithIWF-3112.3andis accetablewithoutcorrective actions.

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5)RUP2$52ZQHUV$FWLYLW\5HSRUW Table 2 Farley Nuclear Unit Plant 1,5thInterval, 2ndPeriod, 1stReport Abstract ofRepair /Replacement Activities Requiredfor ContinuedService Code Item Description Description ofWork DateCompletedRepair /

Class Replacement PlanNumber 2 1"Balancing LinepipingReplaced piping and 1/16/2020 SNC1070049 toflangeweld leakfrom weld duetoleak.

the1CCharging Pump casin 3 8"Service Water return Replaced section of 11/6/2020 SNC1126770 piping from the 2B Diesel leakingService Water Generator near the piping.

flange upstream ofvalve Q1P16V593. Note:This wasalso included in 2R27OAR-1Report, since it wasidentified during Unit 2 pressure test oncommon iin 3 3/4" Service Water inlet Replacedsection of 2/26/2021 SNC1144530 vent piping tothe18 leakingService Water CCWHeat Exchan er. iin 3 10CCWHeat The1CCCWHeat 1/25/2021 SNC1121067 Exchanger tube. Exchanger affected leakingtubes were lu ed.

2 32"Main Steam Loop1 Replaced east andwest 4/19/2021 SNC1056981 spring canpiping supportspring cans dueto ALA2-4100-MS3-H6 repetitively outofdesign s ecification tolerance.

3 6"Service Water piping Replaced section of 4/20/2021 SNC930301 ofthe1CService Water leaking Service Water pumpmini-flow lineon piping.

anelbow inthe horizontal section of piping that ties the into main Service Water header between Q1P16V506 and Q1P16V507 andis upstream ofthemini-flow isolation valve Q1P16V575.

CC 12"degraded sealant in Repaired moisture 4/11/2021 SNC1091821 concrete toconcrete barrier sealant.

moisture barrier.

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