ML20214G629

Requests Technical Assistance in Evaluation of Util 740327 Submittal Re Protection Against Pipe Breaks Outside Containment.Sser 2 Identifying Item as post-CP Review Item Reproduced for Ref

ML20214G629
Person / Time
Site:	Columbia
Issue date:	06/10/1974
From:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
To:	Hendrie J US ATOMIC ENERGY COMMISSION (AEC)
References
CON-WNP NUDOCS 8605220337
Download: ML20214G629 (3)

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Docket No.'WhiOW Mas e e o@ 4c.qpe mMiQg

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46 3... <;N c t3 e.a - ' f <;;,.,. W @ @ Ddhjb 69q$ y

. Joseph & tendrte, esputy Miestersfer Jeshetes(Sofl8N. k M p;!F M

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, :. : :: t u a w e c, m u..,_ w. m.nygw;p w,mg y,; u; TE0etICAL ASSISTANCE-REQWNg a. weas;mg.vu um.;;p;ly:..

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3TATUS:

Post 4 Revier.

BRANCH:

Lift 1-2 (IW 12)

PROJECT MANAEER:

John Omdoff

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TR BRMCHES INVOLVED:

hxiliary rf Peuer Conversten W i

DATE EQUIMD:

A gust 2, 19*/4

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REF:

Latter frus 'J. Ja Staint MusMegten Pelic Power C

l supply tystem, to A. Giambusso dated March 27

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1974 with attaded tednien114 pert' WPS$ 74,

R2), Protection Asalnst Mpe Brooks ide t

Containment.'

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DESCRIPTION OF REQUEST:

Technicail assist,ance is respected ~to enluate the subatttal by WPPSS on Pmtection against pipe bmahl ett.ida contain-t mont. This fs a post-CP review item identified in Supplemet No. 2 to the Safety Evaluatiota. The pertinent section of t'ar anspl.mtst it mpro-eucso bel > for nference

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Asl 1 0 SF4 safe shutdown of the plant would not be prevented by the,

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postulated failure of the steem or feeduster lines. ~ W over; to assure a thomogh.vevier of the'anneequences of 3 ;

! - ge a tht<postWisted accident, en SecenterittyWPt we askedW -

a to applicent to provide us with an:enstpets of the pro-Jap ~

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7 hism and other volevant latorentlan partelming to the W% -

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aculdent v and protestica pmvided.' Thewe5%

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. Siehmatten provided by the applicent es.the consegmansesh.,

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. etection provided to.assura that met shutdown of the WP-j plant would not be prevented will he vgviewed for asemph,

ability by the staff during the operating licensa review 1

i stage and prior to coepletion of constrEtion.

l The mquest of December 22, 1972 referenced above (Section 5.0 of SER Supplement Mc. 2) is given in Enclosure 1 of this TAlt.

1 The sub.)ect of pipe breaks outside containment was discussed et a meet.ing l

between the staff and WPPSS on October 17-18, 1973. The pertinent ex>:erpt from the sunnary of that meeting, dated November 21. Ig73, is given talow.

}{igh Energy Pipe Break Outside Containment f

The applicant and the mpresentatives from gerns and Roe stated that their analysis would follow the guidelines presented in the AEC letten of Decoder 22,1975 and January 12. 1973. Staff comments included the suggestion that an effort be made to ministre encapsulation er pipes i

and components and that the section of the main steen line between tne containment vessel and the ester toelation i

valve must he included in the analysis. The amplicant should deerstrate sufficient eenservatism to vender e l

brwak in the main steam line between the emetalasset vessel an1 the outer isolation ve49e 1eeredtble."Th9s'esuN be -

l done by a substantial vedestien of the seteriel spesableE,

stress values and/or aanpsented-tenervice faepecties techni-:

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the applicant espects'to submit'his formal mopeast tifale?

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JEC Decader 22,1972 letter by Aprl) 1,IF N w f a

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Fese AEC 318 iRev. 9 53) AECM 0240 ero c es se e i es s e es ae4 l

W JUN 10 374 i

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-t ssion. A4s.en '

A determination by the staff of the' adequacy ~.of eca Pipe Smak Outside Centainment'is requimd. ';qW,Qff;:s 0-

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