ML20129E789

Forwards Calculation for Drop of Spent Fuel Pool Gate in Spent Fuel Pool for NRC Review & Approval

ML20129E789
Person / Time
Site:	San Onofre
Issue date:	10/23/1996
From:	Rainsberry J SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20129E795	List: ML20129E789 ML20129E820 ML20129E830
References
NUDOCS 9610280168
Download: ML20129E789 (4)

Text

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Southem Califomia Edison Company P. O. BOX 128 j SAN CLEMENTE, CALIFORNIA 92674-0128 A L. RAINSBERRY October 23, 1996 ,_

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a U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555

} Gentlemen:

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Subject:

Docket Nos. 50-361 and 50-362

. Spent Fuel Pool Gate Drop Calculation San Onofre Nuclear Generating Station

Units 2 and 3

References:

1. Letter from R. M. Rosenblum (Edison) to Document Control Desk (NRC), dated December 6, 1995,

Subject:

Amendment Application Numbers 153 and 137, (PCN-449), Storing Nuclear Fuel

2. Letter from Dwight Nunn (Edison) to Document Control Desk (NRC), dated August 30, 1995,

Subject:

Amendment Application N whers 153 and 137 Supplement 1, (PCN-449, Supplement 1), Storing Nuclear Fuel This letter submits for NRC review and approval the enclosed Southern California Edison (Edison) calculation for a drop of a spent fuel pool gate in the spent fuel pool (SFP).

During the review of Amendment Application Numbers 153 and 137, (PCN-449),

Storing Nuclear Fuel (Reference 1), the NRC reviewer noted a change in the assumptions for the number of spent fuel assemblies that could be damaged due to a postulated SFP gate drop. Rather than delay the review of PCN 449, in the cover letter to PCN-449, Supplement 1 (Reference 2) Edison committed to not move a SFP gate except in a safe load path (i.e., no fuel assemblies in the drop zone). Enclosed, for your review, is Edison calculation C-259-1.01.11 CCN 2 and pages 1 and 8 through 18 of CCN 4 which demonstrates that, at a maximum, only one fuel assembly may be damaged due to a SFP gate

-drop. Edison will remove this restriction to the movement of the SFP gate after the NRC reviews and approves this calculation.

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j If you have any questions or would like additional information, please let me j know.

-Sincerely, I

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j Enclosure cc: L. J. Calla'n, Regional Administrator, NRC Region IV

' J. E. Dyer, Director, Division of Reactor Projects, Region IV K. E. Perkins, Jr., Director, Walnut Creek Field Office, NRC Region IV

! J. A. Sloan, NRC Senior Resident Inspector, San Onofre Units 2 & 3 d

M. B. Fields, NRC Project Manager, San Onofre Units 2 and 3 i

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