ML20084S339

Ro:On 761215,preliminary Info Received by Station Indicated That MAPLHGR Curves Should Be Lowered by 4%.Change Resulted from Review of ECCS Analysis.Curves Lowered

ML20084S339
Person / Time
Site:	Quad Cities
Issue date:	12/16/1976
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084S193	List: ML20084S190 ML20084S204 ML20084S286 ML20084S339
References
NUDOCS 8306160694
Download: ML20084S339 (1)

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e J. Keppler, Regicnal Director '

Of fice of leispectica and Enforcer. cat Etcy len itl l

U. S. Nue. lear Regulatory Coironission '

799 itoosevei e Itcao i' Clen Ellyn, Illinois (0i37 ,.

Re furence : - Quad-Ci t ics flocicar Pcuer Sta t icn . Units I and 2  : ,

Doc!w t No, 50-2$4, OP t-?9 and 'iG-265, 00P.-30  :

Append ix A. Sect ien 3. 5. f . 6.6,0.1.h j '

Dear Mr. Kepplor:

i :

The purpose of this letter i s to proviele you wi t b noti ficaricn of a fler. ort.,.ble Occurrence as reilui red by Technical Speci ficat ica 6.6.B. ! 5,ichin 24 hieur > of t he  !

t C C C u t' r d* rt C C . r i'

On Dece<cher 15, l'J 76 a t iI:00A!i orelimina ry i n forec.a t i on - rec..ived by the .talinn ,

indicated LPat the vaxbru a average pl.inar Iincar ha.it '1.Me r r r i a n rate US APLl4W j a

<.urvou a- c ' n t..S i n ed in I w techrical specil'icaricris shr:uld be 10..ared by 4L t This chan<;e 1 os resul ted f run a rm. lea of the ECCf. reaoa lysis p.:cforiwi to '

cc ply with LOCFF 50. 46 Narc:ndi:< K.

Thn eccue in t'r e ECCS remi.e l rs i s wr.P credit twice for t he airt.ont of heat absorb >:d I ri the i n i : tor vus..e l internals. .

l Accordin<;ly unt i l further i n for,ca t i <:n is rec e i vert by th.) stat ion. the NPL!!GR coe ve . pec3ru t i.f used in the precass ccuputer calcuiaricn5 bave baan i.unced i by tu. ef fect (ve December 15, 19/6. -

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'This cucurrence was discussed .by telephesie wi th Itr. h. Jackiw of your of fice 'I en Decir.ibar 16. I.176. Fu .- '. .'u r in fore a t Ion .ri i i Le prm..oed by :lonor wiin O.:currence :Mport RO 50-2f./76-J'3 ..h

. i ch s i ! ! i.c c d ,i em.* u i t.h i n I f, d .v -

of the da tr* o f t.n i s r>ccurre sce.

Wry truly yours,  %

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