ML19259C825

Confirms 790628 Telcon Re New Info About Util Motion for Summary Disposition & Prefiled Written Testimony Re Tornado Missiles.Large Missiles Could Not Strike Fuel Elements

ML19259C825
Person / Time
Site:	North Anna
Issue date:	07/03/1979
From:	Christman J HUNTON & WILLIAMS
To:	Deale V, Eva Hill, Stober Q AFFILIATION NOT ASSIGNED, LAWRENCE LIVERMORE NATIONAL LABORATORY, WASHINGTON, UNIV. OF, SEATTLE, WA
References
NUDOCS 7908150252
Download: ML19259C825 (4)

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II U N T O N & WILLI AM S 707 EAsr MAIN STREET P o. Box 1535 Ric u >t o nI) .VI RGIN I A 23212 Tc t r pH o N r 804 788-8200 CABLE HU NTWA ND WAM111NO TO N D. C . orric e 1919 FENNSYLVANIA Avc N W. 20036 P. O Box 19230 Tc t c rac N E 202 223-8e50 July 3, 1979 ,,<<~o.

V-8-50-20-41-2 0 ucr o At No 80 7sa-8368 Valentine B. Deale, Esquire 1001 Connecticut Avenue, N.W. 4%\P 1 1/ >f ,

Washington, D.C. 20036 4# r o

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Dr. Quentin J. Stober ' (\ \ .[3 Fisheries Research Institute s i ;)

University of Washington  ;/

Seattle, Washington 98195 /

Mr. Ernest E. Hill Lawrence Livermore Laboratory University of California Livermore, California 94550 North Anna Spent Fuel Pool Docket Mos. 50-338 SP & 50-339 SP

, Gentlemen:

This will confirm the phone calls I made Thursday afternoon, June 28, 1979, to notify the Board and parties of new information pertinent to Vepco's motion for summary disposition and prefiled written testimony.

Vepco filed its Motion for Sunmary Disposition on May 11, 1979, asking for summary disposition of all the is-sues in this proceeding. Attached to that motion was "Vep-co's Statement Of Material Facts As To Which There Is No Genuine Issue To Be Heard." Two of these " material facts" were stated as follows:

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HUNTON & WILLI AMS Valentine B. Deale, Esq.

Dr. Ouentin J. Stober Mr. Ernest E. Hill July 3, 1979 Page Two 118. According to technical papers by D.

R. Miller, W. A. Williams, and T. L. Doan, large missiles such as utility poles and auto-mobiles (which are the design tornado missiles for North Anna 1 and 2) lack sufficient lift or velocity to clear a height of 25 feet (FSAR S 15.4.5.2) 119. These could not, therefore, strike the fuel elements (FSAR S 15.4.5.2),

As indicated, these statements relied on Section 15.4.5.2 of the Final Safety Analysis Report (FSAR) fe r the North Anna Power Station, Units 1 and 2. Section 15.4.5.2.4 references Section 9.1.2 of the FSAR, which contains the following statement:

The fuel building is discussed in Section 3.8.1. Stored fuel in the spent fuel pit is protected from horizontal missiles by 6 ft thick reinforced concrete walls of the pit which extend 20 ft 10 in. above grade. The building geometry protects the fuel elements from direct impact of missiles with angles of approach up to approximately 45 deg above the horizontal. D. R. Miller and W- A. Wil-liams, in a paper entitled "Tornaco Protec-tion of a Spent Fuel Storage Pool No. APED-5696," dated November 1968, and T. L. Doan in a paper entitled " Tornado Considerations for Nuclear Power Plant Structures," published in July, 1970, state that large missiles such as utility poles and automobiles (which are the design tornado missiles, Section 3.3.2) lack sufficient lift or velocity to clear a height of 25 ft. These could not, therefore, impinge on the fuel elements. These spent fuel elements would also be protected by the water which covers the storage racks in the pool from other lighter missiles resulting 6fiil79

IIU N T O N Oc WI L LI A.M S Valentine B. Deale, Esq.

Dr. Quentin J. Stobet-Mr, Ernest E. Hill July 3, 1979 Page Three from damage to adjacent building superstructures As discussed in the r aper by T. L. Doan, small, fast-moving missiles traveling down wards [ sic] would impact only one fuel as-sembly. The radiological impact of this oc-currence is evaluated in Section 15.4.5.

Two sentences in "Vepco's Testimony on High-Density Spent Fuel Storage Racks," served on the Board and parties on June 23, 1979, also rely on the above FSAR statement. At page 14, lines 11-15, the written testimony says the following:

Large missiles such as utility poles and auto-mobiles (which are the design tornado missiles for North Anna 1 and 2) lack sufficient lift or velocity to clear a height of 25 feet. They could not, therefore, strike the fuel elements.

In preparation for the public hearing in this proceeding, Vepco asked Stone & Webster Engineering Corporation, which had originated the FSAR language quoted above in 1973, to verify that the FSAR statement was correct. Stone & Web-ster advised Vepco on June 28 that the statement is cor-rect as written. However, Stono & Webster also advised that subsequent field studies have shown that large mis-siles can rise to elevations higher then the Miller-Wil-liams and Doan papers indicate. I telephoned Mr. John H.

Frye of the ASLB Staff and counsel for the NRC Staff and the intervenors the same afternoon to inform them of this new information.

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HuxTox & WILLI AMS Valentine B. Deale, Esq.

Dr. Quentin J. Stober Mr. Ernest E. Hill July 3, 1979 Page Four Vepco will ask to be allowed to supplement its mo-tion for summary disposition in the near future in order to update the information on tornado missiles.

Very truly yours,

/s/ James N. Chr_istman James N. Christ- T, Counsel for Virginia Ele _c and Power Company 126/586 cc: James B. Dougherty, Esq.

Citizens' Energy Forum, Inc.

Steven C. Goldberg, Esq.

Anthony J. Gambardella, Esq.

Chief, Docketing & Service Section (573_81