ML17229A467

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Responds to NRC Ltr Re Violations Noted in Insp Repts 50-335/97-09 & 50-389/97-09.Corrective Actions:Documented as-found Condition of Unit 2 ECCS Sump in Condition Rept & Operability of Unit 1 ECCS Sump Was Evaluated
ML17229A467
Person / Time
Site: Saint Lucie  NextEra Energy icon.png
Issue date: 09/04/1997
From: PLUNKETT T F
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
50-335-97-09, 50-335-97-9, 50-389-97-09, 50-389-97-9, NUDOCS 9709110222
Download: ML17229A467 (9)


See also: IR 05000335/1997009

Text

CATEGORY1REGULATORY

INFORMATION

DISTRIBUTION

SYSTEM(RIDS))JACCESSION

NBR:9709110222

DOC.DATE:

97/09/04NOTARIZED:

NOFACIL:50-335

St.LuciePlant,Unit1,FloridaPower&LightCo.50-389St.LuciePlant,Unit2,FloridaPower&LightCo.UTH.NAMEAUTHORAFFILIATION

UNKETT,T.F.

FloridaPower,&LightCo.RECIP.NAME

RECIPIENT

AFFILIATION

DocumentControlBranch(Document

ControlDesk)SUBJECT:RespondstoNRCltrreviolations

notedininsprepts50-335/97-09

&50-389/97-09.Corrective

actions:documented

as-foundcondition

ofUnit2ECCSsumpincondition

rept&operability

ofUnit1ECCSsumpwasevaluated.

DISTRIBUTION

CODE:IE01DCOPIESRECEIVED:LTR

ENCLSIZE:TITLE:General(50Dkt)-Insp

Rept/Notice

ofViolation

ResponseNOTES:DOCKET¹0500033505000389ERECIPIENT

IDCODE/NAME

PD2-3PDINTERNAL:

ACRS~RCH/HHFB

NRR/DRPM/PERB

OEDIRRGN2FILE01EXTERNAL:

LITCOBRYCE,JHNRCPDRCOPIESLTTRENCL11221111111111111111RECIPIENT

IDCODE/NAME

WIENS,L.AEOD/SPD/RAB

DEDRONRR/DISP/PIPB

NRR/DRPM/PECB

NUDOCS-ABSTRACT

OGC/HDS3NOACNUDOCSFULLTEXTCOPIESLTTRENCL111111111111111111DNNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION

REMOVEDFROMDISTRIBUTION

LISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION,

CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION

415-2083TOTALNUMBEROFCOPIESREQUIRED:

LTTR20ENCL20

FloridaPower&LightCompany,6501SouthOceanDrive,JensenBeach,FL34957September

4,1997L-97-21610CFR$2.201U.S.NuclearRegulatory

Commission

Attn:DocumentControlDesk%ashington,

D.C.20555Re:St.LucieUnits1and2DocketNos.50-335and50-389ReplytoaNoticeofViolation

NRInteratedInsectionReort97-09FloridaPowerandLightCompany(FPL)hasreviewedthesubjectNoticeofViolation

and,pursuantto10CFR$2.201,theresponses

totheviolations

areattached.

FPLappreciates

thesignificance

oftheseviolations

andhastakencomprehensive

corrective

actionstoaddressthefailuretoimplement

Emergency

CoreCoolingSystem(ECCS)sumpdesignrequirements

atthetimeofSt.LucieUnit2construction,

aswellasthefailuretoidentifyandcorrectthenon-conforming

condition

sinceinitiallicensing.

Ourcommitment

toconductagradedUpdatedFinalSafetyAnalysisReport(UFSAR)reviewforbothSt.LucieUnits1and2,coupledwithmoreeffective

fieldwalkdowns

bySystemEngineers

andQualityAssurance

personnel

shouldensurethatUFSARdescriptions

accurately

describetheas-builtcondition

ofselectedsystems,structures,

andcomponents.

Finally,wehavetakenprocedural

andprogrammatic

actionstoensurethatsurveillances

andgenericissuereviewsincludeamorespecificverification

ofdesignparameters.

Pleasecontactuswithquestions

ontheenclosedviolation

responses.

Verytrulyyours,/7yg'"~/~f'-Thomas.F.PlunkettPresident

NuclearDivisionTFP/JAS/EJW

Attachment

cc:RegionalAdministrator,

USNRC,RegionIISeniorResidentInspector,

USNRC,St.LuciePlant9709110222

rr70904PDRADQCK050003358PDRanFPLGroupcompanyllllllllllllllllllllllllllllllllllllllll

L-97-216Attachment

P~aei~ViolaionA10CFR50,AppendixB,Criterion

V,"Instructions,

Procedures,

andDrawings,"

requires,

inpart,thatactivities

afFecting

qualitybeperformed

inaccordance

withdrawingsappropriate

tothecircumstances.

Contrarytotheabove,asofMay18,1997,thelicenseefailedtoinstallcontainment

Emergency

CoreCoolingSystemsumpsforSt.LucieUnit2inaccordance

withtheapproveddrawinginthatthesumpwasnotcompletely

enclosedbyameshscreenasdescribed

onDrawing2998-G-797,

Sheet13.Specifically,

averticaldividerscreen,whichprovidedtrainseparation

forthesumpfiltration

screen,contained

gapsinexcessofthosespecified

inthedrawingwhichpermitted

unfiltered

exchangebetweenthetrains.Also,asofMay18,1997,gapswereidentified

inhorizontal

screensectionsinexcessofthatspecified

inthedrawingsandpenetrations

ofthehorizontal

screenlackedtherequired"boots"whichwouldprohibittheentryofunfiltered

fluidthroughtheannularspacebetweenpenetrations

andthescreen.(01014)ThisisaSeverityLevelIVviolation.

(Supplement

I)~~~R~esonseA1.FPLconcurswiththeviolation.

2.REASONFORVIOLATION

Thedeficiencies

associated

withtheECCSsumpdividerscreenwerecausedbyafailuretoproperlyimplement

thedesignrequirements

forthescreenenclosure

duringinitialsystemconstruction.

Plantdesigndrawing2998-G-797,

Sheet13,specifies

fullclosureoftheverticalseamsassociated

withthesumpdividerscreen.Anapproximate

2inchgapattheoutboardendofthedividerscreenpanelexistedbecausethedesigndetailtoextendandconnectthedividerpaneltotheoutsidescreenpanelwasnotproperlyimplemented

duringtheoriginalconstruction

ofthesumpenclosure.

Theomissionofametalpanelinthedividerscreenwall,andseveralothersmallgapsfoundinthesumpscreenenclosure

werealsoaresultofinattention

todetailduringoriginalsystemconstruction.

Thelackofrequired"boots"onpipingpenetrating

theECCSsumpfiltration

screenwastheresultofinadequate

configuration

controlduringtherestoration

ofthesumptodesignrequirements

following

maintenance

activities

onthesumpstructure

andwithinthesump.Contributing

tothelackofconfiguration

controlforreinstalling

the"boots"ontheECCSfiltration

sumpscreenwasaninadequate

sumpcloseoutinspection

asrequiredbytheTechnical

Specifications.

TheTechnical

Specification

closeoutinspection

focusedon

L-97-216Attachment

P~ae2debrisin,ordegradation

of,theECCSsump,anddidnotincludeaninspection

ofthe=physicalcondition

orintegrity

ofthesumpfiltration

screenstructure

anddividerplate.CORRECTIVE

STEPSTAKENANDTHERESULTSACHIEVEDA.FPLdocumented

theas-foundcondition

oftheSt.LucieUnit2ECCSsumpinaCondition

Report.Asanaspectoftheresolution

oftheCondition

Report,aMODE-hold

wasimposedpendingtherestoration

oftheECCSsumptodesignconfiguration.

Additionally,

sinceSt.LucieUnit1wasoperating

inMODE1atthetimeoftheevent,theOPERABILITY

oftheSt.LucieUnit1ECCSsumpwasevaluated

andsatisfactorily

dispositioned

inaccordance

withtheSt.LuciePlantcorrective

actionprogram.B.FPLperformed

asystemwalkdown,

andasafetyevaluation

waswrittentodocumentthedesignandlicensing

basisrequirements

fortheUnit2ECCSsumpscreens.Basedontheevaluation,

additional

descriptive

designbasisinformation

developed

intheevaluation

willbeaddedtotheUFSAR.Thediscrepancies

associated

withtheSt.LucieUnit2ECCSsumpscreenenclosure

werecorrected

inaccordance

withPlantChange/Modification

(PCM)97-037M.ThePCMincludedmodifications

totheECCSsumpscreennecessary

torestoretheECCSsumptoaconfiguration

meetingtheintendeddesign.Implementation

ofPCM97-037Mwascompleted

priortotheUnit2startupfollowing

thecycle10refueling

outage.D.Toaugmentcurrentsurveillance

instructions,

additional

procedural

guidancewasdeveloped

forperforming

ECCSsumpinspections

toprovidespecificrequirements

forinspecting

forgapsinthesumpscreenaswellasverifying

thecleanliness

ofthesumparea.Theprocedural

guidanceisintendedtoensurethatthephysicalcondition

ofthesumpscreenscontinues

tomeetthedesignrequirements.

(Maintenance

Surveillance

Procedure

MSP-68.01,

"Containment

SumpInspection,"

andPSLNuclearAssurance

QualityControlTechnique

Sheet10.54,"Unit1andUnit2Containment

SumpInspection"

)TheSt.LucieUnit1ECCSsumpdebrisscreenswillbeinspected

duringthenextoutageinwhichSt.LucieUnit1entersMode5forasufficient

duration.

Theinspection

willincludeadetailedas-builtverification

ofthescreenconfiguration.

(PlantManagement

ActionItem(PMAI)PM97-06-177)

L-97-216Attachment

P~ee34.CORRECTIVE

STEPSTOAVOIDFURTHERVIOLATIONS

A.Asdiscussed

inFPLletterL-97-180,

datedJuly11,1997,FPLhascommitted

toconductagradedreviewoftheSt.LucieUnit1andUnit2FinalSafetyAnalysisReports.FPLplanstoprioritize

thisreviewaccording

torisksignificance

(basedonprobabilistic

safetyassessment

methods).

Fourprioritylevelshavebeenestablished.

Thegradedreviewwillincludewalkdowns

ofthecriticalcharacteristics

ofsystems,structures,

andcomponents.

B.FPLhasimplemented

aguideline

forSystemEngineersystemwalkdowns.

Thesewalkdowns

aretobeconducted

onaperiodicbasisandincludetheuseofsystemdesigndrawings.

(SystemsandComponent

Engineering

Department

Guideline

No.SCEG-019,

"SystemEngineering

SystemWalkdowns")

TheQualityAssurance

Department

hasinstituted

aperiodicprogramofsystemauditsanddesignverification

walkdowns.

Theseauditsandwalkdowns

focusonsafety-related

andsafetysignificant

systemsandincludeconsideration

ofdesigndrawingstofieldconfigurations

andtakeintoaccountoperating

experience

information

andtopicsofregulatory

significance.

(St.LucieQualityDepartment

Administrative

LetterSLQDAL-7,"SafetySystemWalkdowns")

D.St.LuciePlanthasimplemented

enhancedworkcontrolsforworkactivities

ontheECCSsump.Thesecontrolswillensurethatmaintenance

activities

whichcanaffectthephysicaldesignconfiguration

areproperlycontrolled

toensurethatthedesignismaintained.

(St.LuciePlantAdministrative

Procedure

ADM-0010432,

"ControlofPlantWorkOrders")E.ThiseventwillbeincludedinOperations,

Maintenance,

andEngineering

SupportPersonnel

continuing

trainingwithemphasisontherequirements

forforeignmaterialexclusion

(FME)andconfiguration

control.Fullcompliance

wasachievedonMay22,1997,uponimplementation

ofPCM97-037Mwhichincludedmodifications

totheECCSsumpscreensnecessary

tomeetdesignrequirements.

ThisPCMwascompleted

priortotheUnit2startupfollowing

thecycle10refueling

outage.

L-97-216Attachment

P~ae4Violation

B10CFR50,AppendixB,Criterion

XVI,"Corrective

Action,"requires,

inpart,thatmeasuresshallbeestablished

toassurethatconditions

adversetoquality,arepromptlyidentified

andcorrected.

Contrarytotheabove,asofMay18,1997,thelicenseefailedtopromptlyidentifyandcorrectUnit2containment

sumpdeficiencies

relatedtoverticaldividerscreengaps,horizontal

screengaps,andpenetration

bootinstallation

despitemultipleopportunities

duringTechnical

Specification

inspections

ofthesumpandinspections

associated

withNRCInformation

Notice89-77,"DebrisinContainment

Emergency

SumpandIncorrect

ScreenConfigurations,"

andSupplement

1tothisInformation

Notice.(02014)ThisisaSeverityLevelIVviolation.

(Supplement

I)R~eseaseB1.FPLconcurswiththeviolation.

2.REASONFORVIOLATION

ThefailuretopromptlyidentifyandcorrecttheSt.LucieUnit2ECCSsumpdeficiencies

relatedtoverticaldividerscreengaps,horizontal

screengaps,andpenetration

bootinstallation

duringTechnical

Specification

inspections

ofthesumpwastheresultofinsufficient

inspection

acceptance

criteriaandguidance.

Specifically,

thesurveillance

requirements

forperforming

thesumpinspection

didnotrequireadetailedinspection

ofthesumpscreenenclosure

forcompliance

withtheUpdatedFinalSafetyAnalysisReport(UFSAR)designrequirements.

Technical

Specification

Surveillance

Requirement

4.5.2.e.2

requiresavisualinspection

oftheECCSsumptoverifythatsubsystem

suctioninletsarenotrestricted

bydebrisandthatsumpcomponents

shownoevidenceofstructural

distressorcorrosion.

Thisinspection

isperformed

every18months.Therewerenospecificplantrequirements

toinspectforgapsinthedebrisscreensortoverifythatthephysicalcondition

ofthescreenenclosure

issufficient

topreventbypassing

thefiltering

function.

InFebruary1994,FPLperformed

aninspection

andgeneralconfiguration

verification

oftheSt.LucieUnit2ECCSsumpbasedonindustryeventsdocumented

inNRCInformation

Notice(IN)89-77,Supplement

1(December

3,1993).TheINwasissuedtoalertlicensees

ofpotential

problemsassociated

withdebrisfoundincontainment

emergency

sumpsandincorrect

screenconfigurations.

Asaresultoftheinspection,

L-97-216Attachment

P~ae5severalsumpscreenconfiguration

deficiencies

wereidentified

andsubsequently

corrected.

However,the1994inspection

primarily

focusedondamagedormissingcomponents

andobviousconfiguration

inadequacies

anddidnotincludewritteninspection

acceptance

criteriafortheinspector.

Theinspection

scopedidnotprovideforadetailedas-builtverification

ofthecomplexECCSsumpdesignwhichcouldhaveidentified

theadditional

deficiencies

described

inthisreport.Asaresult,anopportunity

forearlierdetection

oftheECCSsumpscreendeficiencies

wasmissed.3.CORRECTIVE

STEPSTAKENANDTHERESULTSACHIEVEDA.Toaugmentcurrentsurveillance

instructions,

additional

procedural

guidancewasdeveloped

forperforming

ECCSsumpinspections

toprovidespecificrequirements

anddirection

forinspecting

fortheECCSsumpscreenaswellasverifying

thecleanliness

ofthesumparea.Theadditional

procedural

guidanceensuresthatthephysicalcondition

ofthesumpscreensmeetsthedesignrequirements.

(Maintenance

Surveillance

Procedure

MSP-68.01,

"Containment

SumpInspection"

)Additionally,

the"Prestart

Check-OfFList"

forbothSt.LucieUnits1and2(NormalOperating

Procedures

NOP-1/2-0030120)

nowrequireawalkdownofspecificareasin-containment

bytwolicensedsenioroperators

inadditiontodocumentation

ofthecompletion

ofMSP-68.01.

B.Theplant'sQualityControlprocesswasrevisedin1995torequirewritteninspection

andacceptance

criteriaforallactivities

whichrequireQualityControlacceptance.

(PSLNuclearAssurance

QualityControlTechniques

Sheet2.9,"RequestforInspection

andTestingServices"

)CORRECTIVE

STEPSTOAVOIDFURTHERVIOLATIONS

A.Thiseventwillbeincorporated

intheEngineering

SupportPersonnel

(ESP)trainingprogramatSt.Lucietoprovideemphasisonthecontinuing

needforeffective

assessment

anddisposition

oflessonslearnedfromindustryexperience

suchasthatcontained

inNRCInformation

Notice89-77.B.Operating

Experience

(OE)itemswhicharedetermined

torequirereviewbySt.LuciePlantarenowaddressed

usingtheSt.LuciePlantCondition

Reportprocess.Condition

Reportsareusedtodocumenttheevaluation

andcorrective

actionsforsuchapplicable

OEitemsandprovideavehicletoassurethatproperevaluations

arecompleted

anddocumented,

andthatcorrective

actionsareproperlycapturedandtrackedtocompletion.

TheCondition

Reportprocessproducesstandardized

responses

toOEitems,ensurestimelyandenhancedvisibility

ofOEreviews,andestablishes

minimumstandards

fordocumentation,

L-97-216Attachment

P~ee6review,andapproval.

(PlantAdministrative

Procedure

ADM-17.03,

"Operating

Experience

Feedback"

)C.Additionally,

asstatedinCorrective

Step3B,above,theQualityControlprocesswasrevisedtorequirewritteninspection

andacceptance

criteriaforallactivities

whichrequireQualityControlacceptance.

Fullcompliance

wasachievedonJuly18,1997,withtheissuanceoftheadditional

procedural

guidanceforperforming

ECCSsumpinspections

toprovidespecificrequirements

forinspecting

theECCSsumpscreenaswellasverifying

thecleanliness

ofthesumparea,asdiscussed

inparagraph

3.A,above.