ML19331E020
| ML19331E020 | |
| Person / Time | |
|---|---|
| Site: | 07109508 |
| Issue date: | 08/05/1980 |
| From: | Ross D ENERGY, DEPT. OF |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML19331E021 | List: |
| References | |
| 17003, NUDOCS 8009050205 | |
| Download: ML19331E020 (2) | |
Text
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__ te Department of Energy Washington, D.C. 20545 AUG 5 1950 c
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AUG 14 G30 > 4ig Mr. C. E. MacDonald, Chief d
r1,qrs Transportation Certification Branch
\\c,\\ MAIL szcim COCEI ctn.y s/f Division of Fuel Cycle and Material Safety g
6's U. S. Nuclear Regulatory Cor: mission Washington, D.C. 20555
Dear Mr. MacDonald:
Enclosed are copies of our Certificate of Compliance USA /9508/BLF (D0E-AL),
an engineering evaluation, and a safety analysis for a mcdification to the allowed contents of the 6M spec packaging.
There is no priority for your review as this packaging modification is being used exclusively for Department of Energy shipments.
Sincerely, v.
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..h f{ c' Donald M. Ross, Chief Occupatior.al Safety Branch Operational and Environmental Safety Division Enclosures As Stated (8 copies each) cc:
R. R. Rawl, DOT, w/cy c.c. & evaluation c
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POOR QUAUTY PAGES
REVIEW OF LA-UR-1390, "USE OF THE DEPARTMENT OF TRANSPORTATION SPECIFICATION 6M CONTAINER FOR SHIPPING POLYSTYRENE-PLUTONIUM CCMPACTS" IA-UR-79-1390 was reviewed to evaluate the safety of shipping, in the 6M container, fissile material (plutonium) with H/Pu ratios exceeding those presently allowed by the DOT regulations. The proposed material loadings would comply with all other 6M shipping requirements.
It was found that assumptions which disregarded the Pu-240 content.
and the use of spherical geometry vs cylindrical, would provide a degree of conservatism in the proposed loadings. Additionally, use of any containers larger than 15 gallons would also provide some increased margin of safety. A comparison of the proposed loadings I
was also made with data from TID-7028 on critical masses of water moderated plutonium spheres. This also indicated a considerable margin of safety at the H/Pu ratios covered by the LASL report.
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