ML20247H656

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Withdraws Request for Exemption from Criticality Monitoring Requirements of 10CFR70.24.Recent NDT of Cell Windows Does Not Support Earlier Info That Substantial Amount of Oil Present in Windows
ML20247H656
Person / Time
Site: 07000824
Issue date: 07/20/1989
From: Christopher Boyd
BABCOCK & WILCOX CO.
To: Rouse L
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
25790, NUDOCS 8907310089
Download: ML20247H656 (2)


Text

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ATTN: Le and C. Rouse, Chief-

! ml Cycle Safety Branch D1 vision of Industrial & Medical Nuclear Safety Washington, DC 20555

REFERENCE:

1.

Letter from C. C. Boyd to L. C. Rouse, dated March 13, 1989.

2.

Letters from C. C. Boyd to L. C. Rouse, dated April 10 -

and 25, 1989.

Gentlemen:

The Babcock & Wilcox Company, Naval Nuclear Fuel Division Research Laboratory (NNFD-RL), is withdrawing our request for an exemption from the criticality monitoring requirements of 10 CFR 70.24 which was sub-mitted as Reference 1.

Also withdrawn are the supporting documents shown in Reference 2.

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Af ter further investigation into questions raised by your staff con-cerning the windows of the hot cell, we have not been able to sub-stantiate their shielding factor for neutrons.

Recent nondestructive testing of the cell windows does not support earlier information that there was substantial amounts of oil in the windows.

Therefore, criticality monitoring will be performed for Hot Cell No.1.

If you should have any further questions, please contact me at (804) 522-5753.

Very truly yours, l

BABC0CK & WILCOX NNFD Research Laboratory G

Charlie C. Boyd, Jr.

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