The 9977 General Purpose Fissile Package, A Replacement for the 6M Specification Package Page: 10 of 13
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
2006 INMM Conference
Figure 13. Residual Foam Following
Removal of Charfoam from TP-3.
Figure 14. Radiograph of TP-3 Following Fire
The examination of the residual, un-degraded urethane foam revealed cracks that were clearly present
before the fire test. The radiographs showed indications that coincided with these features, indicating the
stage in testing at which the cracking occurred. The buckling of the liner in Test Package 3, the
horizontal test case, was seen in the radiographs to have occurred as a result of the 9-m drop.
The structure of the char-foam was similar in all cases. The degraded material varied from plastic rich
material immediately adjacent to the undegraded foam, to frangible, carbonaceous or coked material on
the outer surface, against the drum wall. When the outer shell was removed, the outer surface of the char-
foam was convoluted with nodules of char-foam separated by deep channels or fissures.
The temperature labels installed on the inside of the liner and on the containment vessels confirmed that
the interior temperatures were well within the acceptable range, in all cases. The maximum temperature
recorded on a containment vessel was 2800F on the vessel from Test Package TP-4. The peak
containment vessel temperature on the practice package (which had no urethane foam insulation) was
4350F. This indicates that the FiberFrax layer alone is sufficient to provide the required thermal
protection. The peak internal temperatures were found on the bottom of the top plug, being on the order
of 2700F. These results are summarized in Table 2.
Post Test Leak Test
The leak tests performed on the containment vessels after their removal from the test packages showed
the vessels were leak tight, in all cases. The results are given in Table 3. It is worthy of particular note
that the containment vessel from the practice package was found to be leak tight.
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
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/m1/10/: accessed May 27, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.