United States Nuclear Regulatory Commission - Protecting People and the Environment

Wyle Laboratories

April12, 2002

Document Control Desk
U.S. Nuclear Regulatory Commission
Washington, DC 20555

Subject: Potential Part 21 on irradiations performed with the cobalt-60 sources in the Georgia Tech hot cell

Reference: Georgia Tech letter dated 3/15/2002, received by Wyle 4/11/2002

Pursuant to the 10 CFR Part 21 requirements, this letter notifies the NRC of a Potential Part 21 condition.

An error in irradiation dose units is identified in the attached letter from Georgia Tech letter dated March 15, 2002, which was received by Wyle on April 11, 2002. The error applies to all equipment irradiated with the cobalt-60 sources in the Georgia Tech hot cell from 7/24/1997 to 7/6/2001. Georgia Tech reported radiation doses in units of rads-air (absorbed dose in air) instead of Roentgens. Since one Roentgen is equal to 0.877 rad, the actual dose is less than the reported value.

Wyle will perform an evaluation to determine:

1. Wyle projects that include irradiation with the cobalt-60 sources in the Georgia Tech hot cell from 7/24/1997 to 7/6/2001.

2. The actual dose absorbed by equipment in said projects.

3. Whether the actual dose in said projects envelops the customer-specified requirements.

Wyle Laboratories has the capability and chooses to perform the evaluation to determine if a defect exists. It is the responsibility to Wyle Laboratories to inform the purchaser(s), and any affected licensees.

Wyle will complete the specified evaluation of the circumstances within sixty (60) days of discovery of the potential defect. The NRC will be provided a copy of Wyle' 5 evaluation report.

If you have any questions, please feel free to contact me by phone (256) 837-4411, Ext. 271, fax to (256) 830-2109, or e-mail to esmitlt@hnt.wylelabs.com.

Sincerely,

WYLE LABORATORIES, INC.

Edward W. Smith
Director, Contracts & Purchasing

283 EWS rlf

Wyle Laboratories, Inc. 7800 Highway 20 West Re. Box 077777 Huntsville, AL 35807-7777 Tel: (256) 837-4411

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