ML19329D671
| ML19329D671 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 04/14/1976 |
| From: | Engle L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8003160293 | |
| Download: ML19329D671 (3) | |
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SUMMARY
iOF.' MEETING' WIT.H. FLORIDA POWEPJ C.ORPORATION. CONCERNING THEi. --. E.,~,.
u f BORATED WATER ' STORAGE TANK DRAWDOWN TEST FOR CRTSTAL. RIVER, ImITf3.-
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Representatids 'of' the Florida Power Corporation:(FPC), the' Eabcocic & ~
- L Wilcox Company '(BfN)' and Gilbert Associates Incorporated (CAI) 9et with the NRC.staffsin Bethesdai Maryland on' April 8, 1976 and discussed the items strmarized belou. An attendance list is cttached.
BAC E CUND:
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T On May 8, 1975, EtN reported ta d!&E the po n ibly cencric deficiency for proper draudoun times for the Perated Untar Scorce Tad (BUST) for certain Oconce Class NSSS facilities including crystal River, Unic 3 (ch 3).
On h:guct 1% 1973. the ~?C - d 0 the PC staff und prmented theh procedures for testing and verffying correct drwdown times for the.
Cb 3 CUST. The JPC stated the vould submit the tcat results to 'IRn for review and approval.
Ihe prc-operationa'1. test for.the' BUST at Cb3 was conducted in Senteder 1975, and on March'16, 197f, tha.FPC submitted the CAI report, "Forate.1
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Water Storage Tank Drawdown Transient Analyaic, 'teviaion,,1, Januari.1776."
The c5jective of the 'GAI report pas to verify the adequacy of the original design for tha building spray.and decay heat systens during emergenev conditions by' tracking the fluid'levelsin;the' borated waterf NaOH and.
Na2 2 3 cankse -iThe reportWouldlaiso' provide the.. bases for~any-proposed '
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.~..propo.. sed.involvind.the.u p oi wind ch ek_ valves 10. lieu of the ori."Ina11v
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e adesigned~stop check valves L.With the proposed; change.the system was adQound< t6.;eeet;tholoriginallddiign,$riteria,Nhich specifiam.the aliquot J Gamount,of chemical.7 required;cxcept: in,the case of2a postulated. single q r M.iactive~ failure.j The" report stated thack or:.t,hepal,ve failure case,~the wwr f
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DISCUSSION:
B&W presented their bases for the criteria for the mass of chenicals drawn j fron'the tanks.to justify ;the single active failure case.. A discussion o:1 uncertainties in available'expericcutalidata: folloved. : The NRC~ staff indi<
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" DESIGN OPTIONS FOR CR-3:
~0ptiens available'to'the FPC for the CR-3 design.:ere discun ud.
Your options open to FPC are:
(1) LoverNa2 2 3 concentrations in-thioculfate tank suc$s that the cunp 30
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Ray 3 3 instead of present des 4:n uixture vould contain 0.5 to 0.73*:
S0 goal'of 1.0T; (2)'Incranse concentr:ti:7 in 5 0H tant to incre w s m W; (3) Revisa systen to par:ait centinued additier. of WW durin; th >
recircula. ion phase of ECCS.cmatien; and
_ (4) Revise nethod of additive injeuticn from gravity f eed m:hed to pumped flev systc..
The FPC stated their pref arance for Option 3 chove a. d twP.cated t' er 'euld
.T e EC otaf f indicated that any revision revise thC CE-3 PSAn accordira:17 h
of the cy9 tem must meet orir,inal desihn criterite ns Atated in thn im.C.
Tho staf f indiened that's reascnable error band (e.g. ! 10~) i o. nnint value of design criteria intacceptable.
The reviwd desi;;n cust u*t the ninele
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-2ETESTING'OF ENST DP.Ak'DOWN TEST:--
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's GAI questioned whetheEen ' addition'al pro-oper'ationni test for the CR-3 FA'ST vould be~ required.- The staff stated the modified system vould require a
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Tho.TTC. ind tcatad that their revised nre-onorational W t-schedule for CR-3 includes time for retasting and that the revised ?!C
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draudoun test.vould fe:run.
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ENCLOSURE MEETING HELD APRIL 8, 1976 WITH FLORIDA POWER CORPORATION CRYSTAL RIVER, UNIT 3 LIST OF ATTENDEES FLORIDA POWER CORPORATION A. Gomez J. Rodgers BABCOCK & WILCOX COMPANY C. Barksdale R. Borscm R. Coad W. Keyworth D. Mars C. Nitti GILBERT ASSOCIATES, INCORPORATED P. Ely, Jr.
T. Vaughn NRC-STAFF W. Butler, DPM L. Engle, DPM W. Pasedag, MB
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