ML19323G743

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Ro:On 800416,NRC Div of Project Mgt Advised Util of Possible Generic Deficiency in FSAR Section 4.3.Boron Dilution Incident Analysis Does Not Analyze When RCS May Be Drained to Middle of Hot Leg w/1% Shutdown Margin
ML19323G743
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 04/16/1980
From: Davis S
BALTIMORE GAS & ELECTRIC CO., PACIFIC GAS & ELECTRIC CO.
To:
References
NUDOCS 8006060582
Download: ML19323G743 (1)


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'i. IT. Opvit. Baltienry Cas & Electric Cav eany Staa.!ECT:

caa ric Deffctmicv and r3AR Safety Anelvsf.s ?*ction 14,3 (Remn Dilution ine levnt)

Tb-tn(mm t ion iac_19. led becain conff nos smr varhal ennvare.atinn of Anrii I G.,

1980, with vour Mr. H. E. Archltret m the sana sublact.

Pfr. thatyCo w r, nf the Ofvinfon or em f.ct mnw-'** t. f nforvw"4 Rs i t im ry f',.+ s & Elect ric hv teit phone on April M,19AI), of A poitIble genor(C deflClenty

.in' TS AN.5 rfety Ann!v31s %*ttlon 14.3 (Boron Dilution incidant) whit

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,wolv tre Cn ivert Pi t tfs I)ni ts 1.*. 2.

The homn <ilintton incie4 eat walvats daat net =nnlyra far t,Sa caec vbe the Daactar Coni ant Svete (CCF) r'av b=

<tra frad to tha nia.tl.3 of the hat too wi th a 17. shutdo m ram tn.

This condition rway nct ur Velle. perInmino raint,aa.4= rm the l>setor Cnolant Systcei at a tina w*n the rector is not in a refuelinn mode.

D a l t irwra P.a t A Electric has deterrif ned that t,h* abnve rondt tine has not been cnolvted frir and that a 1% shutdown r*arntn whila ovaratinn in the abnva ennd t tina way not. pravide wf f1ctent raarnin of safety; themfara, neerattna neneduras wi t 1 t>- channed to muira a minie of a 5 shutdown namin which nenvit cs an adammte saf=tv varetin or Samuro all *morres nf a dilutlon water i

cre isn19t*4 an<t tanned woen tha h4ctor Coolent %vsta-ts efraim4 for rea t n t en war =,

t*nry datalled infon +t,%em renardirm further corrective attlen wiI) be t>rnvidad in t.be fourta-n-day follow-up rwoort.

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