ML19309H398

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Requests Extension Re Reanalysis & Subsequent Review of IE Bulletin 79-01B,Item 4.Multi-node Analysis Must Be Performed for Aelb Areas Outside Containment.Reanalysis Will Enable Better Determination of Extent of Areas Affected by HELB
ML19309H398
Person / Time
Site: Beaver Valley
Issue date: 04/15/1980
From: Dunn C
DUQUESNE LIGHT CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-79-01B, IEB-79-1B, NUDOCS 8005130148
Download: ML19309H398 (1)


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April 15, 1980 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Attn: Boyce H. Grier, Regional Director Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 IE Bulletin 70-OlB, Items 4 and 5

Dear Mr Grier:

1 We have been unable to complete the action required by Item 4 in the l time frame allotted. This is due to having to perform a multi-node analysis i for the HELB areas outside of containment. This reanalysis will enable us l to better determine the extent of the areas affected by the HELB which we expect would reduce the total numbers of equipment that see the harsh environment. This reanalysis and subsequent review will be completed by December 15, 1980. We are requesting an extention of the required completion date until that time.

Item 5, the maximum expected flood level in containment has been determined to be at elevation 698' 9". This level was used in the first submittal, to identify any equipment in containment which will be submerged.

If you have any questions, please contact my office.

Very truly yours, C. N. Dunn Vice President, Operatious