ML20209F676
| ML20209F676 | |
| Person / Time | |
|---|---|
| Site: | 07000192 |
| Issue date: | 05/16/1985 |
| From: | Solari A MICHIGAN, UNIV. OF, ANN ARBOR, MI |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20209F672 | List: |
| References | |
| 78988, NUDOCS 8507120517 | |
| Download: ML20209F676 (2) | |
Text
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The University of Michigan Radiation Control Service
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May 16, 1985
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U.S. Nuclear Regulatory Commission Region III Materials Licensing Section 799 Roosevelt Road Glenn Ellyn, IL 60137 Re Amendment License No. SNM-179 Gentlemen:
This is an application to amend SNM-179 to allow possession and use of an Americium-243 plated source. The source strength will be up to 20 microcuries (100 micrograms). The source will be used in conjunction with the Department of Energy sponsored project cross section measurements.
The Americium-243 in convenient chemical form will be deposited on a metal backing approximately three centimeters in diameter and one millimeter thick. The active deposit will be restricted to a diameter of approximately five millimeters. This will result in a sufficiently large outer rim for convenient handling with tweezers.
The authorized user also plans to investigate the possibility of evaporating a thin layer of gold on to the source to reduce the possibility of loss of material from the active surface.
The source will be used as a gamma ray activity standard with its activity accurately determined by solid angle alpha particle counting. Handling precautions appropriate for a plated alpha source will be observed. When not in use the source will be housed in a plastic container and stored in a stainless steel glovebox maintained at a reduced pressure with respect to the room air. 'At the time of use the source will be transfered from storage to the experimental area. Personnel involved will wear gloves, film badges and finger tabs. The source will be returned to storage g y {, D after each measurement.
Smears for surface contamination willfbf.O M20M carried out under the supervision of Radiation Control Service staff following each handling of the source.
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s U.S. NRC Page 2 The source will be used in the neutron cross section laboratory at the Phoenix Memorial Laboratory. There is a slim possibility that the source may be used temporarily at the neutron bay located in the Naval Architecture and Marine Engineering Building. We will still include. that building as an authorized area of use. RCS will transfer the source between the buildings and the handling procedures would be the same_in either facility.
Yours truly,
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Arthur J. Solari, Director AJS/dl denmoino. y393g3
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