ML20238E697

Sumarizes 780802 Meeting W/Utils & C-E in Bethesda,Md Re Action Requirements in Event of Reactor Protection Sys Channel Inoperability.Meeting Held to Clarify NRC Position on Subj as Presented in .W/O Encls

ML20238E697
Person / Time
Site:	Millstone, Palisades, 05000000
Issue date:	09/30/1978
From:	Reid R Office of Nuclear Reactor Regulation
To:	Counsil W NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20238E606	List: ML20238E604 ML20238E644 ML20238E652 ML20238E697 ML20238E702
References
TAC-7089, NUDOCS 8709150144
Download: ML20238E697 (2)

Text

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DISTRIBl! TION:

Docket File

..Glainas NRC PDR

.DTondi i

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_JBurdoin Docket No.:

S0-336 ORBf4 Rdg l'

RReid i

RIngram MHHMX ELConner

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i tiertheast nuclear Energy Conpany Attorney, OELD,

ATTH: itr. W. n. Counsil, Vice President 01&E(3) fluclear Engineering 6 Operations DEisenhut P. D. idox 270 ACRS (16) l Hartford, Connecticut 06101 TERA, DSB JRBuchanan Gentlemen:

TJCarter

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Gray File Un August 2,1978, representatives from utilities using Combustion l

Engineering (CE) NSSS and frcx, CE met in Bethesda, liaryland to j

discuss the action requirements in the event of Reactor Protection i

System (RPS) channel inoperability. Enclosure 1 is the minutes of i

this necting. The raceting was held to clarify our position on this l

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~ subject as presented in our letter dated August 3,1977 and to l

i gain an understanding of your position as inctated in your response i

dated Septeober 21, 1977 This sane subject hij been discussed pre-I viously on Maren 16, 1976.

l In our previous correspondence, we requested that you submit an appli-I cation for license amendment to change the liillstone, Unit No. 2 Technical l

Specifications (TS) Section 3.3.1.1 to require inoperable RPS channels to i

be placed in the " tripped" status within one hour after being declared I

j inoperable. We further stated thct you could request that we under-l take a specific facility review of your RPS to cetermine the suitabil-l ity of operating the RPS in a two-out-of-three logic. Your response l

requested such a specific facility RPS review and we propose that the

'1111 stone, Unit 2 RPS review be schedulelfor the month of October 1978.

i The exact date trill be coordinated through your Operating Reactor Branch Project !!anager (ORPM). Enclosure 2 is the RPS review items that will l

be of interest to our review teca.

l As you know, our staff has conducted the RPS review at the Calvert Cliffs and St. Lucit: unitr. A copy of the resultant Safety Evaluation I

for St, Lucie, presertting the finding of the RPS review (pages 3 to S),

l is proviccd for your information as Enclosure 3.

Our conclusion was l

l 8709150144 780910 PDR ADOCK 05000255 P

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l tiortheast Nuclear Energy Co. -

i that. allowing indefinite bypass of one of the four.RPS is not justified, but since the four Ihannel CE system does have some l

indereadence, bypassing for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> during testing or maintenance of one RPS channel is justified.

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l As an alternative to-the onsite NRC review of your PPS, we will

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. consider issuance of the Calvert Cliffs and St. Lucie type TS of your RPS if yott provide an application including' documentation -

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of your PPS similarity to those of Calvert Cliffs and St. Lucie.. Any such application should be submitted within 45 days of the date of l

. thi s l etter.

Si ncerely, l

' Robert W. Reid, Chief Operating Reactors Branch $4 Division of Operating Reactors Enlosures:

l 1..

Heeting Summary 2.

P.eview Itera 3.

Safety Evaluation cc w/ enclosures: See next page

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, i ORB #4:00R C-PSB: DOR AD-E&P; DOR. _C-0RBf4:00R.

NConner:rf Glainas

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