ML20234F203

Provides Guidance on Acceptable Scope & Schedule of Hydrogen Control Sys Final Analysis to Be Submitted Per 10CFR50.44. Util Proposed Outline & Revised Schedule for Submitting Final Analysis Requested 30 Days After Receipt of Ltr

ML20234F203
Person / Time
Site:	River Bend
Issue date:	09/09/1987
From:	Paulson W Office of Nuclear Reactor Regulation
To:	Deddens J GULF STATES UTILITIES CO.
References
NUDOCS 8709230057
Download: ML20234F203 (4)

Text

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Ana UNITED STATES l

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o fg NUCLEAR REGULATORY COMMISSION n

k WASHINGTON. D C. 20555 5

September 9,1987

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Docket No. 50-458 Mr. James C. Deddens Senior Vice President (RBNG)

Gulf States Utilities P. O. Box 220 St. Francisv111e, LA 70775 ATTN:

Nuclear Licensing

SUBJECT:

RIVER BEND STATION, UNIT 1 HYDR 0 GEN CONTROL SYSTEM FINAL ANALYSIS REQUIRED BY 10 CFR 50.44 The Commission's rule for control of hydrogen gas that may be generated following a postulated loss-of-coolant accident (10 CFR 50.44) requires that each licensee with a BWR Mark III containment submit an analysis of its hydrogen control system on a final schedule to be established by the NRC staff.

The purpose of this letter is to provide guidance on an acceptable scope and schedule of the hydrogen control final analysis for River Bend Station.

The scope of the hydrogen control analysis is specified in Paragraph (c)(3)(vi)(B) of 10 CFR 50.44.

The analysis must provide an evaluation of the consequences of hydrogen released from a degraded core accident, include the recovery period, use postulated accidents accepted by the NRC staff, support the design of the hydrogen control system, show that containment structural integrity is maintained and demonstrate survivability of systems and components necessary to establish and maintain safe shutdown and containment integrity.

The Hydrogen Control Owners Group (HC0G), which consists of the owners of the four domestic BWR 6 Mark III plants, is performing generic analyses and tests of hydrogen control in a quarter scale test facility to support the plant-specific analyses for the four plants.

HCOG submitted a topical report, HGN-112 " Generic Hydrogen l

Control Information for BWR 6 Mark III Containments," dated February 23, 1987

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which provided much of the information required by the rule.

The remainder of the generic information is scheduled to be submitted in September 1987.

Each licensee should provide a plant-specific analysis which will address the elements specified in 10 CFR 50.44(c)(3)(vi)(B).

The HC0G topical report, or I

portions thereof, may be referenced where appropriate, but the plant-specific report should provide the information needed to demonstrate the acceptability of the hydrogen control system for River Bend Station.

The NRC staff is presently reviewing Topical Report HGN-112 and associated generic information.

As a part of its review, the staff will evaluate plant-specific considerations.

The staff's generic safety evaluation report (SER) is currently scheduled for completion in December 1987.

Plant-specific reports should be submitted within 6 months of the issuance date of the staff's generic SER, taking into consideration SER recommendations regarding information to be included in the plant-specific reports.

8709230057 070909 PDR ADOCK 05000458 P

PDR j

t Mr. James C. Deddens September 9,1987 By letter dated March 31, 1987, Gulf States Utilities Company proposed to

. submit the River Bend Station final analysis by September, 1987.

However, this schedule does not include time for completing staff reviews of the generic report.

In addition GSUC should have benefit of the staff SER while finalizing your safety analysis plart-specific implementation of hydrogen control.

Accordingly, you are requested to submit within 30 days after receipt of this letter, a proposed outline and revised schedule for the River Bend Station hydrogen control system final analysis submittal required by 10 CFR 50.44.

Submittal of the report within 6 months of the date of the NRC staff's generic SER would be an acceptable schedule.

The outline of the report should indicate

.the depth of treatment of the topics.to be included.

Sincerely, kdl Walter A. Paulson, Project ihnager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects cc:

See next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading F. Schroeder i

P. Noonan W. Paulson D. Moran J. Craig OGC-Bethesda E. Jordan J. Partlow ACRS (10)

PD4 Plant File LTR NAME: RIVER BEND HYDROGEN. CONTROL h

• See previous concurrences:

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PD4/LA PD4/PM*

PSB*

PD4/Dj PNoonan DMoran: sr WPaulson JCraig 9/ /87 9/04/87 9/h/87 9/04/87 9/f/87 i

_2 By. letter dated March 31, 1987, Gulf States Utilities Company proposed to submit the River Bend Station final analysis by September,-1987.

However, this schedule.does.not include time for completing staff reviews, of the y

generic report.

In addition RBS should have benefit of the staff SER'while i

finalizing your safety analysis plant-specific implementation of Hydrogen control.

Accordingly, you are requested to submit within 30 days after receipt of this letter, a proposed outline and revised schedule for the River Bend Station

' hydrogen control system final analysis submittal required by 10 CFR 50.44.

Submittal of the report within 6 months of.the date of the NRC staff's generic i

SER would be an acceptable schedule..The outline of the report should indicate the depth of treatment of the topics to be included.

i

. Sincerely, Walter A. Paulson, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects cc:

See next page DISTRIBUTION

.h6cket File NRC PDR Local PDR PD4 Reading F. Schroeder i

P. Noonan W. Paulson D. Moran J. Craig OGC-Bethesd-E. Jordan J. Partlow ACRS (10)

PD4 Plant File LTR NAME: RIVER BEND HYDR 0 GEN CONTROL h

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PD4/LA (l'D4diol PD4/PM p

PD4/D n sr WPaulson gJ0gg JCalvo PNoonan 9/ /87 9@ 8 9/ /87 9/p787 9/ /87 1

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Mr. James C. Deddens Gulf States Utilities Company River Bend Nuclear Plant cc:

Troy B. Conner, Jr., Esq.

Mr. J. E. Booker Conner and Wetterhahn Manager-River Bend Oversight 1747 Pennsylvania Avenue, NW P. O. Box 2951 Washington, D.C.

20006 Beaumont, TX 77704 Mr. Eddie Grant Mr. William H. Spell, Administrator l

Director - Nuclear Licensing Nuclear Energy Division l

Gulf States Utilities Company Office of Environmental Affairs P. O. Box 220 P. O. Box 14690 St. Francisville, LA 70775 Baton Rouge, Louisiana 70898 Richard M. Troy, Jr., Esq.

Assistant Attorney General in Charge Mr. J. David McNeill, III State of Louisiana Department of Justice William G. Davis, Esq.

234 Loyola Avenue Department of Justice New Orleans, Louisiana 70112 Attorney General's Office 7434 Perkins Road Resident Inspector Baton Rouge, Louisiana 70808 P. O. Box 1051 St. Francisville, Louisiana 70775 H. Anne P1ettinger 3456 Villa Rose Drive Gretchen R. Rothschild Baton Rouge, Louisiana 70806 Louisianians for Safe Energy, Inc.

1659 Glenmore Avenue Baton Rouge, Louisiana 70775 President of West Feliciana Police Jury Regional Administrator, Region IV P. O. Box 1921 U.S. Nuclear Regulatory Commission St. Francisville, Louisiana 70775 Office of Executive Director for Operations Mr. Frank J. Uddo 611 Ryan Plaza Drive, Suite 1000 Uddo & Porter Arlington, Texas 76011 6305 Elysian Fields Avenue Suite 400 Philip G. Harris New Orleans, Louisiana 70122 Cajun Electric Power Coop. Inc.

10719 Airline Highway P. O. Box 15540 Baton Rouge, LA 70895

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