ML20052A811
| ML20052A811 | |
| Person / Time | |
|---|---|
| Site: | 07109152 |
| Issue date: | 04/01/1982 |
| From: | Marsh C CHEM-NUCLEAR SYSTEMS, INC. |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20052A812 | List: |
| References | |
| 20566, NUDOCS 8204290214 | |
| Download: ML20052A811 (2) | |
Text
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CHEM-NUCLEAR SYSTEMS INC.
P O. Box 1866
- Bellevue, Washington 98009 * (206) 827 h11 ApriV1Ff9b
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q Docmta Nt Mr. Charles E. MacDonald, Chief ussac Transportation Certification Branch Division of Fuel Cycle and Material Safety g
APR 161982 > 11 U. S. Nuclear Regulatory Commission Nuss Washington, D. C. 20555 c3 g% f'"
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Reference:
Docket No. 71-9152
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Subject:
Proposed Shipping Criteria for CNSI 1-13CII Certificate of Compliance /SAR
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Dear Mr. HacDonald:
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' ~ r r: a Based on discussions with members of your staff and Gene [ral Public'. JU'ff
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g's Utilities representatives at the TMI site, we would like tairequest-anp amendment to the SAR and C of C for use of the CHS 1-13CII s' hipping _ cask.
This amendment addresses the potential generation of combustible gases and specifies the shipping criteria which we believe is necessary and sufficient to assure safe waste shipments.
The proposed criteria is as follows:
"For all packages containing residual water or other substances which could radiolytically generate combustible gases, a determination must be made by tests and measurements of a representative package such that the following criteria are met over a period of time that is twice the expected shipment time:
(i) The hydrogen generated must be limited to a molar quantity that would be no more than 5% by volume at STP (or equiv-alent limits for other inflammable gases) of the secondgry container gas void (i.e., no more than 0.063 g-moles /ft3); or (ii) The secondary container and the cask cavity (if required) must be inerted with a diluent to assure that oxygen, including that radiolytically generated, shall be limited to 5% by volume in those portions of the p1ckage which could have hydrogen greater than 5%.
For packages to be delivered to a carrier for transport, the secondary container must be prepared for shipment in the same manner in which determination for gas generation is made. Shipment period begins when the package is prepared (sealed) and must be completed within twice,
the expected shipment time."
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fir. Charles E. ltacDonald RL M g t
. April 1,1982.
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- g O U The technical basis and amendment to the SAR for the above criteria is addressed in the enclosure. Addition IJypn4 ave included our current technical approach and general "pe uresyjgpreparingpackagesfor shipment. These procedures address @usttbre gas control by both in-erting and/or gas suppression systems.
Hopefully this information will provide your-staff _ with the necessary details to perform their reviews.
If additional information is required, please notify us as soon as possible.
Sincerely, CHE!!-NUCLEAR SYSTEMS, INC.
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Chryl A. Marsh Licensing Coordinator CAft:slj
Enclosures:
Revisions (10) to SAR for Model CliS 1-13CII Package to 10CFR71 Type "B" Packaging Requirements, Volume I dated 6/18/81 cc:
David G. Ebenh'ack I
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