ML20031E524
| ML20031E524 | |
| Person / Time | |
|---|---|
| Site: | 07106698 |
| Issue date: | 09/17/1981 |
| From: | Clay Johnson NAC INTERNATIONAL INC. (FORMERLY NUCLEAR ASSURANCE |
| To: | Jennifer Davis NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20031E525 | List: |
| References | |
| 19662, NUDOCS 8110160063 | |
| Download: ML20031E524 (2) | |
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Nuclear Assurance Corporation 24 Executive Park West 4
Atlanta, Georgia 30329 (404) 325-4200 Telex: 549567, 542703 715 Horizon Dave US W Grand Junction. Colorado 81501 m
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' d.S.NUgjR R Se tember 17, 1981 B
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\\e Mr. John G. Davis, Director Office of Nuclear Material Safety and Safeguards
' O/.MM b U. S. Nuclear Regulatory Commission Washington, D. C.
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Reference:
NRC Certificate of Compliance No. 6698 Docket Number 71-6698
Dear Mr. Davis:
In response to the USNRC's Order to Show Cause dated July 22, 1981, we have performed a series of tests and inspections of the NAC-ID spent fuel shipping cask. The enclosed report, "NAC-ID Surface Contamination Evaluation," summarizes the results of our evaluations to date. We believe the results of this work demonstrate that there is reasonable assurance that the cask will not experience excessive contamination levels in transport.
Our evaluation indicates that:
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(1) The cause of excessive surface contamination is
['Q'Y that can be detected by measuring beta radiation [d $ e%
.g isotopes of Cesium imbedded in the cask surface emanating from the surfaces.
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(2)
Effective and practical decontamination procedures 3.h % '
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treatment facilities.
(3) Tests performed to date have verified items (1)
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and (2) above and that by modifying surface con-tamination monitoring requirements, future cases of excessive contamination levels will not be experienced.
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i Mr. John G. Davis Page 2 September 17, 1981 Plans for use of the cask include an initial move from its current location with plastic.heeting covering the cask. After a thorough survey for removable and imbedded contamination at its destination, the cask will be placed in service in its normal transport mode moving spent fuel assemblies approximately 200 miles. During the first five shipments, detailed surveys for removable and imbedded contamination will be made.
The cask will be removed from service if any survey indicates excessive surface contamination. Should this occur, the cask will not be placed back in service without concurrence by the USNRC.
On the basis of our investigations and evaluations and with the above stipulations for limited initial service, we request the Order to Show Cause be rescinded.
Sincerely, NUCLEAR ASSURANCE CORPORATION Charles R. Jo Vice Presid2nt Engineering and' Transportation Services CRJ:bam Enclosure cc: Mr. Charles E. MacDonald, Chief Transportation Certification Branch Division of Fuel Cycle and Material Safety
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