The 9977 General Purpose Fissile Package, A Replacement for the 6M Specification Package Page: 6 of 13
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2006 INMM Conference
Figure 5. TP-3 After 9 m Horizontal Drop.
Figure 4. TP-2 After 9 m CGOC Drop.
The crush test is a severe test for drum type packages. Demonstrating the ability of the urethane foam
overpack design to protect the containment vessel in these tests was an important goal in the test program.
The overpack met this requirement in all cases, with margin. Drum-type packages are the most vulnerable
in the horizontal impact orientation. In this case, although Test Package 3's overpack protected the
containment vessel against damage, a tear resulted along the chime where the buckling of the drum
bottom unfolded the outer layer (i.e., the drum bottom layer) of the rolled seam of the chime. The bottom
material in this region has been thoroughly work hardened. Although this tear did not prevent the
overpack from protecting the containment vessel in the subsequent fire test (because of the thermal
resistance of the urethane foam), a sanitary bottom configuration, which will be resistant to such an event,
has been adopted for the production packages. A confirmatory test of the sanitary bottom configuration is
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SMITH, ALLEN. The 9977 General Purpose Fissile Package, A Replacement for the 6M Specification Package, report, January 13, 2006; [Aiken, South Carolina]. (https://digital.library.unt.edu/ark:/67531/metadc892013/m1/6/: accessed April 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.