ML17275B007

Requests Info Re Inerting of Facility Primary Containment & Discussion of Capability of Proposed Hydrogen Recombiners to Function in Inerted Atmosphere.Info Should Be Provided by Jul 1981 in Order to Support Present Review Schedule

ML17275B007
Person / Time
Site:	Columbia
Issue date:	04/02/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Ferguson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
References
NUDOCS 8104270177
Download: ML17275B007 (6)

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TERA NRC/PDR L/PDR NSIC TIC ACRS (16)

Docket No.:

50-397 e P e sr =~ rrrru ~ 'g t" o tr ~to>> 8 ~

DISTRIBUTION:

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• 'Youngblood MDLynch LRib APR 2 198l MRushbrook RTedesco SHanauer RVo11mer TMurley DRoss Washington Public Power Supply.Syptem,

RHartfield, MPA ATTN:

Mr. R. L. Ferguson

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Ht.gf Managing Director

.,'". "...',."...,"","0'I'E,.'(3) 2 3000 George Washington Way

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P. 0.

Box 968 I +<~E~nuu Richland, Washington 99352 COsdAt gag 10@

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Subject:

Staff Position Regarding,Inertipgof.,tfe. W/P-2,I',rimary Containpent Following the accident at Unit,2 ofthe T)reegi]e,Island facility,, the,,staff...

initiated an intensive review of, the amountjf)ydrogen which, cou1d be releaseg, vta a metal/v(ster reactton (t.,e,, Zticontuptp)pd(riater), tn,tJje,eye,nt of,compprab1e.

accidents.

Our review has been focused.ontpe.pptenrtia1 of generatincg.)ydrogen well in excess of those amountsconside} edin,Section 50.44,of,10 CFP,.Part, 50...,

We have also studied the effects of re]easipg,large,amounts, of hydrojen, into the containments of various types, of.nucteaj;poper, j]anfs wit) emph~is,on,.the

.effects of the resulting hydrogen concentrations apd,)he, effectiyepess.of various. mit<ga-,

tion systems.

The results of,our studies are,presented in our yeyort to the, Commission on this matter, SECY 80-107, inwhich we, recommend tPat, all. facilities using the General Electric prpssgre,suppressioj coptainment pyptemas identified, as,,

Mark I and Mark II, be inerted., In this liard~,the Commission issued a, proposed, interim rule published in the Federal Registej',on,October 2,,1980,(45.FR. 65466).

However, the Commission has now determiped pat,thematter. of hydrogen.control for potential accidents involving degraded,cqnditions in the reactor, core.(i.e.,

loss of coolant followed by excessivy1y,,hjj) fidel, clad temperature es), in plants with relatively small containments such asm the/ark,II containment be resolved in the near term.

Specifically, it is.ourpopition.thatm the reso1utsiop,of)he,,

matter of hydrogen control for ghe WNP,-g faci1,jty,.s5outd not Pe deferred until.

completion of the rulemaking, process.,Accqrdigg1y,,we require that. you mage...

provisions to inert this facility...,...,........

In responding to our position on this matter~proyige,au,cyymitment, to inert the WNP-2 facillpy and submit a descry;ip'tion.jfpop,you.yli)1 accoijplisg this., inertipg,...,

including all pertinent desian criteria.,gddigionafly...provide,j,dipcussioj of,,....

the capability of your proposed. hydrogen'.jecojbiiieyp tofunction.,in aj,inei ted atmosphere.

We request that your,cotmJiitment,on,tgismatters apd tge, accoppanying...

information be submitted by July, of thijyear.in oI;der to,support our, present review schedule.

If you are unable. to,respond, og, tPis schedule,. pl,easiw adyise us when you w111 submit your response,.,...,.,....,...,.,

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f981 If you have any questions on thismatterp1ease.contactP..D...

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(301) 492-8413 or L. N. Rib at )301)492-8174~.

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Sincerely, Offgftlal 81gned by Robert I

Tedesoo

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See next page Robert L. Tedesco, Assistant Piyector.......,..,

for Licensing Division of Licensing s sv v cr 4 vesv va vyvwfptye DL:LBgl LNRib ~X/iP 4/J oFFIcEP DL LBAi1 SURNAME/ gpJ goch/] g DATEP 4/ 1/81

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NRC FORM 318 RO/80) NRCM 0240 OFFICIAL RECORD COPY

• USGFO: 198~29 824

y4 Ssrrq'le tottghO

~sobsT.J NodoR

k Mr.

R. L. Ferguson Managing Director Washington Public Power Supply S'stem P.

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Box 968 3000 George Washington Way

Richland, Washington 99352 ccs:,

Nicholas Reynolds, Esq.

Debevoise 5 Liberman 1200 Seventeenth

Street, N.

W.

Washington, D.

C.

20036 Richard Q. Quigley, Esq.

Washington Public Power Supply System P. 0.

Box 968 Richland, Washington'9352 Nicholas Lewis, Chairman Energy Facility Site Evaluation Council 820 fast, Fifth Avenue Olympia, Washington 98504 Mr. 0.

K. Earle Licensing Engineer P. 0.

Box 968

Richland, Washington 99352 Mr. Albert D. Toth Resident Inspector/WPPSS-2 NPS c/o U.

S. Nuclear Regulatory Commission P.

0.

Box 69 Richland; Washington 99352

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