ML19207A310

LER 79-090/99X-0 on 790629:recent Data Indicates Nonconservatism in Rept Tornado Considerations for Nuclear Power Plants Ref in Fsar.Paper Did Not Consider That Damage Caused by Lubbock,Tx Tornado Was Possible

ML19207A310
Person / Time
Site:	North Anna
Issue date:	08/10/1979
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19207A307	List: ML19207A306 ML19207A310 ML19207A312
References
LER-79-090-99X, LER-79-90-99X, NUDOCS 7908160433
Download: ML19207A310 (1)

Text

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• NRC F ORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT coNTRot stocx: l l l l 1 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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61 6d W3 EVENT C ATE 74 5 AEPORT D ATE 60 OOCA ET NLV8E A Et ENT DESCRIPTION AND PROB ABLE CONSEQUENCES h oIr lRecent data has become available to show nonconservatism in the oacer on " Torn Vn i3 l Considerations for Nuclear Power Plants" by T. L. Doan. This document is referenced l

[ , ra l by the F.S. A.R. Section 9.1 regarding the Spent Fuel Pool Design. Further analysis _ j n i E, i has been performed to indicate that the present design of the spent fuel pool is l 0 i adequate in light of this new data and therefore the health & safety of the general l aj-l lpublic wera .rt. affected. _

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CAUSE CESCRIPTICN AND CORRECTIVE ACTICNS l This new data became available following a study of the damage caused by tornado at l

, l Lubbock, Texas where an automobile was found hurled more than 25 ft. into the air. l

, i. jThis was not considered possible in the paper by T. L. Doan referenced by the F.S.A.R. ;

, , l The attached report confirms the adequacy of the present design in meeting the l l criterion of' Standard Review Plan 3.5.1.d. , Rev. 1. 1

- > n ST s . a C .'. E A J'wE A STA TL 5 55 y ps;OVEnv OE5CA GTiCN N/A lDlgl New data found on tornados 1

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