ML19308E231

Summary of 740423 Meeting W/Util,Gilbert Associate Inc,B&W & NRC Re Proposed Mods to Auxiliary Feedwater Sys to Make Consequences of High Energy Pipe Break Coincident W/Single Active Failure in Auxiliary Feedwater Sys Acceptable

ML19308E231
Person / Time
Site:	Crystal River
Issue date:	04/30/1974
From:	Buckley B US ATOMIC ENERGY COMMISSION (AEC)
To:	US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8003240774
Download: ML19308E231 (3)

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..' FLORIDA 70VERCORPOPATIO{(FPC)lL(T

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APPLICANT

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'.on April! 23,;19747 thetKegulatory; staff met?with representativesfof'theWR e 7

7PC,' Gilbert 1'AssociatesCIrA.f(CAI)fand Babcock & Ailcox fB&W)ctoidiscusar ? '

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FPC[s p'roposNd'uodifications't( the auxiliary;fe'edwate'r)systent:(AFS) 'tol ((3}['

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make the.conseIquences of hlgh.' energy; pipe: break coincident 'withia single.

activc' falinre.in the AFS acccptable. L The maeting concluded with the -

understanding that the AFS would ho acceptable if FPC would install:

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. pneunatic.or motor operators 1on the feurl manual' valves [in,the AFS cross-connect pipingswith = remote' control Im,the control room,and pro fide.

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.Mdf tional inf6reatioti~ thatuould de:sonstrate that the contro1~ room operator could institute' appropri;;.te action within a 15-20fninute tiac f ramu without' dam.sging =the core. The etaff alco stipulated that-the:

EI&C syste:ns associated with the AFS anould satisfy tha. intent of IEEE-279.ond-IEEE-303.. Thc~ applicant agreed to comply with IEEE-279.

anst.-30% wherever feanibler. Final? acceptance will be made of ter sub- '

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mittal and review of-the degian changes.

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During' the courae of.the maatinn the staff noted that ~a r.:tn ' steam line bresh.inside containment. coincident. with a single 911nre of the rain-feedwater.iaolation valve way be unacceptable uith regard to contain ont precsure and/or criticality. Jhc applicantfs recponse was that they!

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' vould reduce the closure -time ef-valven. in series with.uain-feedvater

. valves - to 30}secon.Ls., thus, necting 'tha Tsingle f.111ure criterien. ^ The '

30 second. interval to cicco these valves had previou'aly been reviewed by staff and.was.found acceptable.with regard to'containnent pressure.

buildup and criticality.5 An'~ alternate method of tercinating feedwater-

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- flow within 30 seconds;would. be cautomatic~ closurc of the steam sup' ply:.

f'.jvalves(to[the't' urb'ine: driven;mainifeedvater.punps..'Thestaffstatedthat:.. -

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' Cthis methodiwo=147al'so be acceptable;if: pump conec 'down were aiutlysed y

-.Sto asesre:thdt-feedwater!flouFuouldMease within' the: recptired 30 seconds. ~

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'The applidant stated thit' th'e' EI&C?provided to niticate tho consequence i

hf this sheident'f 1.e.,' by. tersi'natin6. feedvater' flow vould ncet? the

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intent.;of.,IEF.E--279.and -308'.'

Final acceptance. wi.ll.iba inado"af ter -

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m MEETING WITH FLORIDA PONER CORPORATION CT_YSTAL RIVER, UNIT 3 APRIL 23, 1974 LIST OF ATTENDEES Atomic Energy Conmission B. Buckley L. Derderian C. Long J..Calvo

• B. Washburn Florida Power Corporation W. Szelistowski B. DuBois A. Gone:

J. Rodgers Gilbert Associates Inc.

S. Hunt R. Hottenstein H. Haeseler

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V. Willems R. Jacoby Babcock & Wilcox J. Walton C. Barksdale P. Mamola A. Jenkins D. LaBelle

• Denotes Part-Time Attendance

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