ML20091M897

Forwards Quarterly Rept,Covering Period Oct-Dec 1991,on Status of Degraded Core Accident Hydrogen Control Program

ML20091M897
Person / Time
Site:	Grand Gulf
Issue date:	01/24/1992
From:	Cottle W ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GNRO-92-00011, GNRO-92-11, NUDOCS 9201290268
Download: ML20091M897 (5)

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Entergy Operations,Inc.

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< m January 24, 1992 U.S. Nuclear Regulatory Commisston

?!all Station P1-137 Washington, D.C.

20535 Attention:

Document Control Desk Subject; Grand Gu'f Nuc) car Station Unit 1 Docket No. 50-416 Licenso No. NPF Quarterly Status Report for Period Ending December 31, 1991-Degraded Coin Accident Ilydrogr1n Cont mi Program GNRO-92/00011 Gentlemen:

The Grand Gulf Nuclear Stat ion (GGNS) Unit 1 Facility Operating 1.icenso requires that Entergy Operations, Inc. submit quarterly reports on the status of the " Degraded Core Accident ilydrogen Control Program."

In response to that requirement, Entorgy Operations, Inc. submits the attached report covering the period October 1, 1991 through December 31, 1991.

Should you have any questions concerning this report, please contact Jewel Summers at (601) 437-2149.

Yours truly, ec:> f~~ % r WTC/JS/mte

. Quarterly Status Report for Period Ending December 31, 1991 a t tachmen t. :

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Mr..

C. Ilintz (w/a)

Mr. J. L. Mathis (w/a)

Mr. R. B. McGobee (w/a)

Mr. N. S. Reynolds (w/a)

Mr. 11. L. Thomas (w/o)

Mr. Stewart D. Ebneter (w/a)

Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30323 Mr. P. W. O'Connor, Project Manager (w/2)

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mai1 Stop 13113 Washington, D.C.

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Attachmnnt to GNRO-92/00011-1 4

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i Grand Gulf Neeltsar Station

-l Docket No. 50-416

-Entergy Operations, Inc.

j Quarterly Status Report

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'for Period Ending December 31, 1991

" Degraded Coro Accident flydrogen Control Program"'

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Attnthrwnt to GNKO-9?/00011 Quarterly Status Report for Perial Ending INember 31, 1991

" Degraded Core Accident flydrogen cont rol Program" 1.0

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uction 1h s quniterly status repost is sul mit t ed t o cornply wit h t he Or nini Gni f Nuclent Stnt ion (GCN9) Unit 1 Opernting l<lcetme.

Th is r equi r oniotit pecifies that Entergy Operations, I tic, should piovide < pint ter ly r epor t s outlining the status of t he ongoing resentch pt ogram to add ess degraded core hydr ogen cont t ol requl t enmnt s.

This report tovet> the fourth calendar quaater of 1991, cod ing Decenibe r 31, 1391.

This report includes brief summniles of submittnis made by Enteigy Opernt'ons this quarter, along with summartes of meet ings bet ween the NRC Staf f and Ent ergy Operat.lons.

Entergy Operations is part icipat ing in the llydrogen Cont t ol Owner Group (llCOG) which is ronduct ing gener ic t enenrch nod annlyses to resolve the dextnded core hydrogen cont rol issue.

Since the work completed by llCOG pnrnllels ' nt ergy Operat ionr' progrnm to resolve this !ssue, this report also includes summntles of meet liign be t weert the llCOG nnd the NKC.

The ment lugs summut J zed in 'his repott do not aflect a formal llc (C position with respoct to any issue, but represent Eatergy Opnrations' listerpretatton of those meetings.

2.0 Summ a ry_o f,, l'9.t c rgy_ Ope r a t i on s, I n c. _ S ubm i t t a i n Entergy Operatiotis mnde no submittals to the NRC on the Degraded Core Accident Ilydrogen Cont tol Program during this caloridnr quarter of 1991.

..J Symma ry. o f_IlC00.fttui N_RC_ Heg t _.ings No farmal meetings were held between Entergy Operations or llCOG and the NRC during this quarter.

4.0 Ilydrogen Cont rol_Pr ogram Statua The summaries nad stetus of the llydtogen Cont rol Progr9m ns stated herein do not reflect the llCOG posit ion with s cipeet to any program, but represent Entergy Operationn' interpret ation of t hese programs.

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The germ. ic resenrrh and genet ic annlyses conducted by llc (C t o t esolve

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the degraded core hydrogen conttol issue are complete, in accotonnte with this, the NRC issued a Snfety Evaluntion Report (SER) on the generic liydrogen Control Program on August 10, 1990.

The SER documented the NEC's review of the generic ilydrogen Cont rol Pingram and delinent ed which issues were considtted closed by the NRC and which required ndditional actton by the llCOG and/or the individual utflitlos.

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Attachment to GNRO 97/00011 4.

$.0 St_n]t.n_o f lign i f iqant, l_a rs.nq The Ilydrogen Cont t ol Owners Group (llc (0) submit t ed document s llGN-137 and llGN-138, dnted Ap:11 29 and 30, 1991, t enjuic t ively. In tenponne to NRC concerns in tlin Generic Mat k Ill Cont ainment flydrogen Cont r ol Saf et y j

IMt1untion Repott ' SI'.R ), innund August 10. 1990.

The issue.n involvo l

certain critorin for prennuro survivability evaluationw, acceptable accident acqueticca for flydrogen Generat ion Events (1100n), nud the avnilability of containment sprays or unit coolern duritig an l100.

1 The staff's initial reaction to the ll'XO submit tals was invor9ble In July 1991, the staf f indicated that review of these Nuhmit tals had been j

initinted, and that'thn findings would be turned over to NRC Projects for disposition to llc 00 membern when tha review was completed.

Recent conversat ions with t'

. If indicate that thorn han been no progrenn on il$o review of IIC(L's submittain. 1":(C still nwnf ta formal

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NRC 9ccentance of these submittnin no that 11C00 may insuo the Finni Generic flydrogen Cont tol Accepted Topical Report,

lanunuce of the Topical Report in neconnary to enable ench IIC(C member to Hub'Rit (i n plant-npocific Ilydrogen Final Analysis, an required by 10CFR$0.44.

6.0 Planned Activitten for the fita,t_qunrtp:1 1992 Following acceptabic resolution of the above issuen with thn NRC. Eatergy Oporntionn will review its achedule for nubmittal of the GGNS I.nni llydeogen Control Report, identify the romnining work necessary for this submit tal, and initiate work on the remaining plant-specific tanks.

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