ML20128J111

Forwards Request for Addl Info Re Mark III Issues (Humphrey Concerns)

ML20128J111
Person / Time
Site:	River Bend
Issue date:	06/25/1985
From:	Butler W Office of Nuclear Reactor Regulation
To:	Booker J, William Cahill GULF STATES UTILITIES CO.
References
NUDOCS 8507100410
Download: ML20128J111 (5)

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Distribution Docket NRC PDR JUN 2 51985 Local PDR PRC System Docket No. 50-458 NSIC LB#2 Reading Licensing Assistant-Hylton SStern

%JPartlow BGrimes Mr. William J. Cahill, Jr.

EJordan Senior Vice President Dewey OELD River Bend Nuclear Group Gulf States Utilities Company AR 16 P.O. Box 2951 J. Kudrick, DSI (P-1000A)

Beaumont, Texas 77704 ATTN: Mr. J. E. Booker

Subject:

Request for Additional Information - Mark III Issues As a part of the NRC staff's review of your application for an operating license for River Bend Station, the staff has detennined the need for additional information in the area of Mark III issues (Humphrey Concerns).

The request for information is included in the enclosure as question 1 through 5.

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

Sincerely,

\

Walter Butler, Chief Licensing Branch No. 2 Division of Licensing

Enclosure:

As stated cc w/ enclosure:

See next page 8507100410 850625 PDR ADOCK 05000458 A PDR Yf(( n

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g ? 5 E0; Docket No. 50-458 Mr. William J. Cahill, Jr.

Senior Vice President River Bend Nuclear Group Gulf States Utilities Company P.O. Box 2951 Beaumont, Texas 77704 ATTN: Mr. J. E. Booker

Subject:

Request for Additional Iriformation - Mark III Issues As a part of the NRC staff's review of your application for an operating license for River Bend Station, the staff has determined the need for additional information in the area of Mark III issues (}iumphrey Concernsl.

The request for information is included in the enclosure as Question 1 through 5.

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

Sincerely,

^

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Walter Butler, Chief Licensing Branch No. 2 Division of Licensing

Enclosure:

As stated cc w/ enclosure:

See next page I

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5, Mr. Hillim J. Cchill, Jr. River Bend f.ucitar Pla;t Gulf States Utilities Company cc: Troy B. Conner, Jr. , Esq. IIs. Linda B. Hetkins/Mr. Steven Irving Conner and Wetterhahn Attorney at Lew 1747 Fer.r.sylvania Avenue,fl. H. 355 I:cpoleon Street Washington, D.C. 20006 Baton Rouge, Louisiana 70802 fir. Uilliam J. keea, Jr.

Director - Nuclear Licensing Gulf States Utilities Con.pany Post Office Box 2951 Beaurcnt, Texas 77704 Mr. David Zaloudek 14uclear Energy Division li. Anne Plettinger Louisiare Deptrtt.ent of 345C Villa hose Dr. Environmental Quality Baton Rouge, Lcuisicna 70806 Post Office Box 14690 Baton Rouge, Louisiera 70898 hicLcrd li. Troy, Jr. , Esq.

Assistant Attorney General in Charce State of Lcuit,iena Department of Justice 234 Loyola Av'cr.ue New Orleans, Louisicria,- 70112 Mr. J. David lict.eill,11I Dwight D. Chamberlain Willian G. Davis, Esq.

Resident Int.pettor Liepartment of Justice Post Office Box 1051 Attorney General's Office St. Francisville, Louisitrc 70775 7434 Perkins Road Baton Rouge, Lcuisiena 70808 Grctchen I!. 140thschild Lcuisianians for Safe Energy, Inc.

1659 Glenmore Avcube Daten F.cucc, Louisiana 70775 James k. Fierce, Jr., Esq.

n. O. Box 23571 Baton Rouge, Lcuisiana 70893 Mr. Robert D.11crtin U.S. NRC, Region Ik Parkway Central Plaza Building 611 Ryan Plaza Drive, Sutie 1000 Arlington, Teus 76011

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Enclosure CONTAINMENT SYSTEMS BRANCH REQUEST FOR ADDITIONAL INFORMATION RE: HUMPHREY CONCERNS FOR RIVER BEND STATION Docket No. 50-458

1. In the response to issue 1.3, it was stated that for structures that are submerged prior to pool rise, the bubble loads are bounded by the LOCA vent clearing loads as defined in GESSAR II. Since the only load mentioned, though not specified, in GESSAR II during the vent clearing is the LOCA water jet load, provide each element of the water jet load and

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the design value(s) used for River Bend.

2. In the response to issue 2.1, the proposed approach does not account for possible resonance between sleeve annulus C0 frequency and sleeve acoustic frequency which might lead to pressure loads in excess of those developed via the scaling laws. If it can be demonstrated that resonant amplification does not occur, the proposed load specification would be acceptable; otherwise, provide the necessary information to account for resonant amplification effect.

3. Provide the following additional information regarding Humphrey Concern 2.2 and 2.3:

a. The source of the MARK II data base used to develop the lateral load and the applicability of this data to RBS;

b. .The procedure used to scale this data;

c. Indicate if the load is applied dynamically or statically; and

d. Justify the elimination of a lateral load specification during the

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C0 phase.'

4. In your response to issues 3.1, 3.3 and 3.7, no mention was made regarding the lateral loads on any of the discharge lines. Provide your justification for eliminating these loads or specify the lateral load that is used in assessing the discharge line mentioned in ycur response to these issues.

5. The information provided in your response to issue 3.4 does not permit the staff to conclude that a conservative estimate of the potential loads has been obtained. Provide the assumptions used in your analysis.

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