ML040060198

E-mail W/Attachment F. Jacobs to P. Narbut Edit for Paragraph in Holtec Inspection Report

ML040060198
Person / Time
Site:	Columbia
Issue date:	05/22/2003
From:	Jacobs F NRC/NMSS/SFPO
To:	Narbut P Office of Nuclear Material Safety and Safeguards
Shared Package
ML040060080	List: ML040060134 ML040060158 ML040060190 ML040060192 ML040060194 ML040060198
References
FOIA/PA-2003-0395
Download: ML040060198 (2)

Text

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From: Frank Jacobs/4..V. S5 To: Paul Narbut Date: 5/22/03 1:36PM

Subject:

holtec para F--, q (

Contrary to the above, design measures were not adequate to ensure compatibility of materials.

During dry runs and spent fuel cask loading at Columbia Generating Station, significant amounts of hydrogen were generated indicating significant aluminum-water reaction. The prepassivation of the Boral plates had been done at nominal water depth, whereas the Boral plates were subjected to substantially greater water depth during cask loading in the spent fuel pool. The prepassivation process had not been qualified under the most adverse conditions, i.e., the water depth associated with cask loading.