ML20053C635

RO 82-17:on 820518,startup Testing Results Relied on as Having Demonstrated Acceptable ESF Actuation Sys Response Time When Tests Results Had Not Been Reviewed to Determine That Response Time within Acceptable Criteria

ML20053C635
Person / Time
Site:	San Onofre
Issue date:	05/20/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-82-17, NUDOCS 8206020411
Download: ML20053C635 (2)

Text

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I'm-s Southern California Edison Company C G3? t':n ~y h.i I2; ; i S AN ONOFRE NUCLE AR GENER A TING ST A TION

! P.O. B O N 128 S AN C LEMENTE, C ALtFORNia 92672 ,]

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j H. 8. R A Y t t t a resoNE l

S , A ,,0N - A N A.. a May 20,1982 o m m irao i

t I U. S. Nuclear Re2ulatory Commission L l Office of Inspection and Enforcement l Region V '

i 145'J Maria Lane, Suite 210

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i n u t Creek, California 94596 - 5263 ,

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i Attention: Mr. R. H. Engelter, agional A:ministrator i i  :

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Cear Sii-t.

i SU3)EC7: Dachut No. 50-361 Licensee Ivent Report No. E2-17 i San Cnofre Nu:Tetr Gancrating Station, Unit 2 1

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Fersuant to Techticai 5mecifications Sectirn 6.9.1.12.b. this lectar a j confirms our prcnot netification ty telephone on May 18,1%2, of a repert;ble occurrence involving San Crofre Nuclear der,arating Station, Unit 2.

Unit 2 Techrical Specification Limiting Condition for Operation'3.3.2 requires in part, tFat tne Engineered Safety Featuras Actuation Systen (ESFAS) be cperable wi+.h re g onse times as shown in Tao c 3.3-5, orior to entry into modes in which ;picific safr:ty f eature: Ire required. ,

i At approximately 1600 on "cy it 1%2, while in mode 3, it was de',erinined that startcp testing re:ults h:.d bwn relied upon as having cer. castrated accepubie E5FAS res?cnse times. However, nartup tes'ing rssults had not been reviewed a cctermine whether those results, in fact, demonsta ts that ESFAS respon n tires are m tnin the accep::n:3 c ri teri:,

speci'isd in Tacle 3.3-5 for safety features requirec in mede 3.

S.l, 8206020411 820520 PDR ADOCK 05000361 S PM E_.-._____--_.___.--,-____ _ - . -.-- - - - - - . - - - -- - - -- -

R.H. Engelken May 20, 1982 Unit cooldown to mode 4 was commenced and our investigation into whether ESFAS response times had been properly verified was begun. Our follow up report, including the results of our investigation will be provided to you no later than June 2, 1982.

Sincerely, l

cc: A. E. Chaffee (USNRC Resident Inspector, San Onofre, Unit 2) 2