ML20133C038

Requests Addl Info in Area of Hydrogen Control Equipment Survivability,Per Review of Application for OL

ML20133C038
Person / Time
Site:	River Bend
Issue date:	07/23/1985
From:	Butler W Office of Nuclear Reactor Regulation
To:	William Cahill GULF STATES UTILITIES CO.
References
NUDOCS 8508060333
Download: ML20133C038 (5)

Text

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Docket No. 50-458 fir. William J. C:-hill, Jr.

Senior Vice President River Bend liuclear Group Gulf States Utilities Ccirpany P.O. Eox 2951 Ceaunont, Texas 77704 JUL 2 315:5 Attention Mr. J. E. Booker

SUBJECT:

REQUEST FOR ADDITIONAL INFORFATION - HYDR 0 GEN CONTROL As a part of the NRC staff's revin of your application for dra operoting license for hiver Bend Station, the staf f has determined the need for add-iticrial infomation in the area of hydrogen control - equipment survivability.

The request for inforuation is included in the enclosure as Questiens 1 - 3 and refers to a dccunent subnitted to NRC by GSU on July 1, 1985, entitlec "Freliminary Equi ient Survivability Report" (RBG 21,454).

Please'infom NRC Project Manager Stephen Stern, of your schedule for response and for Clarification or further discussion on this topic.

Sincerely, Walter R. Butler, Chief Licensing Branch, i;o.2 Division of Licensing

Enclosure:

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i Docket No. 50-458 l ,

I j tir. William J. Cahill, Jr. JUL 2 3 605 l i Senior Vice President l' River Bend liuclear Group Gulf States Utilities Correny i P.O. Ecx 2951

! Ceaumont, Texas 77704 i Attention Mr. J. E. Booker

SUBJECT:

REQUEST FOR ADDIT 10fiAL If.F0PFATION - HYDR 0 GEN CONTROL i . . - r i As a part of the NRC staff's review of your application for an operetir.g  !

license for River Bend Station, the staff has determined the need for add-  !

itional infomation in the area of hydresen control - equiptient survivability. .

The request for information is included in the enclosure as Questions 1 - 3 and ,

! refers to a docunent subnitted to NRC by GSU on July 1,1985, entitlec l j " Preliminary Equipcent Survivability Report" (RBG 21,454).

i j Please inforn f.RC Project Manager Stephen Stern, of your schedule for response l

and for clarificatior, cr further discussion on this topic, i l 4 Sincerely,  !

~

I Walter R. Butler Chief Licensing Branch, i;o.2

Division of Licensing j

Enclosure:

As statec

) cc w/t.r. closure: See next page i

DISTRIBUTION i Docket File iRC POR Local PDR PRC System NSIC LBF2Readin9 Ebylton l SStern JPartlow BGrimes Edordan OELD,0wey .ACRS(16) RCaruso D/L i ANotafrancesco DCSB VBenaroya CMEB Afarp;ewski CllEB v '

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1. '% UN!TED STATES

[ 3 NUCLEAR REGULATORY COMMISSION 5  :: j W ASHINGTON, D. C. 20655

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JUL 2 31985 Docket No. 50-458 Mr. William J. Cahill, Jr.

Senior Vice President ~ >

.*. River Bend Nuclear Group 1 Gulf States Utilities Company P.O. Box 2951 Beaumont, Texas 77704 Attention lir. J. E. Booker J

SUBJECT:

REQUEST FOR ADDITIONAL INFORi% TION - HYDROGEN CONTROL As a part of the hRC staff's review of your application for an operating license for River Bend Station, the staff has detemined the need for add-itional information in the area of hydrogen control - equipment surviv6bility.

The request for infomation is included in the enclosure as Questions 1 - 3 end refers to a document submitted to fiRC by GSU on July 1, 1985, entitled "Preifminary Equipment Survivability Report" (RBG 21,454). _

Please inform NRC Project Manager Stephen Stern, of your schedule for response and for clarification or further discussion on this topic.

Sincerely, bLtLP f) Walter R. Butler, Chief Q Licensing Branch, No.2 Division of Licensing -

Enclosure:

As stated cc w/ enclosure: See rext page 9

fir. Willian J. Cahill, Jr. River Bend Huclear Plont Gulf States Utilities Conpany cc: Ms. Linda B. Wetkins/hr. Steven Irving Troy B. Conner, Jr., Esq. Attorney at Law Conner and Wetterhahn 355 Itapoleon Street 1747 Pennsylvania Avenue, hW Baton Rcuge, Louisiana 70802 Washington,D.C. 20006 Mr. David Zaloudek Hr. William J. Reed, Jr. I4uclear Energy Division Director - Nuclear Licensing Louisiana Department of Gulf States Utilities Company Environmental Quality P. O. Box 2951 P. O. 60x 14690 beaumont, Texas 77704 Baten Rouge, Louisiana 70898

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Richard h. Troy, or. , Etg. Mr. J. Dovid Iitheill,111 Assistant Attorney General in Charge William G. Davis, Esq. i State of Louisiana Department of Justice Department of Justice  !

234 Loiula Avenue Attorney General's Office New Orleans, Louisiana 70112 7434 Perkins Road Baton Rouge, Louisiana 70808 Resident inspector P. O. Box 1051 H. Anne Plettinger St. Francisville, Louisiana 70??5 3456 Villa Rose Drive Baton Rouge, Lousiana 70806 Gretchen R. Rothschild Louisianians for Safe Energy, Inc.

1659 Glenmore Avenue Baton Rouge, Louisiana 70775 Jor.ws W. Pierce, Jr. , Esq.

P. O. Box 23571 Baten Rouge, Louisiana 70893 Regional Administrator, kegion IV U.S. Nuclear Rc5ulotory Cor. mission Office of Executive Director for Operations 611 Ryan Plaza Drive Suite 1000 Arlinston, Texas 76011

Enclusure 1

1. In your submittal, you state that a piece of equipment will survive if the reximum external surface tenperature or the maximum internal tenp-erature at the most limiting conpenent reached during a hydrogen burn, is below the qualification tenperature for this piece of equipment.

During the qualification tests, the actual temperatures reached by the components of the tested equipnent were not measured. Hence, you should dcnonstrate that the temperatures reached by the most limiting internal corponent of the equipment exposed to a hydrogen burn, remain below the terperatures reached by the corresponding ccmponents during the qualifi-cation tests (even though in these tests the equipment moy be expcsed to different temperature-time profiles).

2. Justify the use of 12ft/sec velocity in calculating convection of heat to F- the acceled equipment.

3. Describe the method of enhancenient of conductive heat transfer in free air spcces ir. order to account for the natural convection existing in these spaces.

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