W3P84-1009, Advises That NRC 840330 Request for Info Re BTP Rsb 5-1 Satisfied,Per Sser 5.CEN-259, Evaluation of Natural Circulation Cooldown Test... Demonstrated Applicability of Natural Circulation/Boron Mixing Test

Advises That NRC 840330 Request for Info Re BTP Rsb 5-1 Satisfied,Per Sser 5.CEN-259, Evaluation of Natural Circulation Cooldown Test... Demonstrated Applicability of Natural Circulation/Boron Mixing Test

ML20083M866
Person / Time
Site:	Waterford
Issue date:	04/12/1984
From:	Cook K LOUISIANA POWER & LIGHT CO.
To:	Knighton G Office of Nuclear Reactor Regulation
References
W3P84-1009, NUDOCS 8404180372
Download: ML20083M866 (2)

Text

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LOUISIANA P OW E R & t.1G H T! e o not rum. Ntw onte AN9 LouivANA 70174 m onAnoNot sinar

= I5o41anoPJ45 NYSEMM April 12, 1984 W3P84-1009 3-Al.01.04 3-A20.20 Q-3-D31

!)irector of Nuclear Reactor Regulation Attention: Mr. C.W. Knighton, Chief 1,1cenning firanch No. 3 Division of Licensing U.S. Nuclear Regulatory Commission Wanhington, D.C. 20555 SUBJECT Waterford SES Unit 3 Docket No. 50-382 Auxiliary Pronnurizer Spray (APS)

REFERENCE (1) 1.etter dated March 30, 1984 from Knighton (NRC) to I,cddick (I.PAI)

(2) W3P84-0505 dated February 29, 1984 Dear Sirt in your Reference (1) Intter you requented that I.PAI. provide a ncheduto committing to renolve the Staff concerna in regard to a potentini ningle failure vulnerability in the APS System. Specifically, to addrone the Staff'n concerna you requested,luntification aufficient to demonstrate that the Waterford APS design meets the critorin of BTP RSn 5-1, and the criteria for systemg required for atcam genorntor tuho rupturn (SCTR) necident mitigation.

An to the criterin of BTP RSR 5-1. Supplemant 5 to the Waterford SER (Section 5.4.3) indienten that we meet the ATP requirementn.

Furthermorn, Reference (2) transmitted CEN-259, "An ?. valuation of the Naturnt Circulation Cooldown Tcat Performod at the San Onofre Nuclear Generating Station: Comptinnce With the Tonting Requiremente of hranch Technical Position RSB 5-l".

While CEN-259 demonstrated the applienbility of tho SONCS naturni circulation /horon mixing tout to Watorford 3, it also reaf firmed our comptinnen with RTP RSB 5-1.

In particular it van demonstrated (in Sectiono 6.2 and 6.3) that the APS in not necennary for mooting the functionni requirements of BTP RSn 5-13 rather, in the unlikely event that the APS in unnvallable the finn 1 plant depreneurlantion enn be accomplished uning the safety-grado reactor coolant gna vent nyatom. Wo foot, therefore, that your requent for information on DTP RSH 5-1 han already been adequatcly mot and we have no plans for a further nuhmittal.

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As to the APS/SGTR innuo. following discussions with your Mr. T. Marsh, the following schedule was agreed upon:

1.

An acceptabit justif fention for interim operation will be submitted to the NRC prior to exceeding 5% power.

2.

Resolution of the SGTR innue should be reached within six months of receipt of the low power operating license. liardware changen, if necennary, will be completed on a schedule to be negotinted at n intor time, however, not prior to the first refueling outage.

It in our understanding that these commitments will form the basin for n licenso condition for Watorford 3.

We request that the wording of the l

licongo condition be clear insofar as only the APS/SGTR napect of Reference I

(1) remaining for I.P&L action, and issuo "renolution" not requiring backfit implementation.

Should you have any questions or comments in thin matter plenne contact Mike Mainner at ($04) 363-8938 Yourn " ry truly, s.

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K..' Cook S v2 i

Nucionr Support & Licongiug Mannger i

l KWC/MJM/pco cci E.L. Blake. W.H. Stevenson, J.T. Colline. D. H. Crutchfield.

J. Wilson, C.L. Constable. T. M,arnh. C. Liang l

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