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Foam Density Sensitivity Study for the 9977 Package.

DE2008934824

Publication Date	2008
Personal Author	Gorczyca, J.; Tsu-Te Wu, T.
Page Count	11
Abstract	Two layers of insulation fill the volume of the 9977 package between the drum liner and the shell. One of these layers is composed of General Plastics FR-3716 polyurethane foam (also known as Last-A-Foam(reg-sign)), poured through fill holes in the drum bottom and foamed in place. There was concern that the density of the foam insulating layer may vary due to the manufacturing process and that variations in foam density would compromise the safety basis of the package. Thus, a structural finite element analysis was performed to investigate this concern. The investigation examined the effect of replacing the material properties for the FR-3716 polyurethane foam, which has a density equal to 16 lb(sub m)/ft(sup 3), with material properties of similar foam with varying densities through finite element analysis of hypothetical accident conditions (HAC) pertaining to impact conditions. The results showed that the functional performance of the containment vessel (CV) was not compromised under the conditions investigated.
Keywords	Containers Foams Radioactive materials Packaging Thermal insulation Shock absorbers Performance Polyurethanes Density Sensitivity Finite element method
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Savannah River National Lab., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200902
Contract Number	DE-AC09-96SR18500

Foam Density Sensitivity Study for the 9977 Package.

Foam Density Sensitivity Study for the 9977 Package.
DE2008934824

Publication Date	2008
Personal Author	Gorczyca, J.; Tsu-Te Wu, T.
Page Count	11
Abstract	Two layers of insulation fill the volume of the 9977 package between the drum liner and the shell. One of these layers is composed of General Plastics FR-3716 polyurethane foam (also known as Last-A-Foam(reg-sign)), poured through fill holes in the drum bottom and foamed in place. There was concern that the density of the foam insulating layer may vary due to the manufacturing process and that variations in foam density would compromise the safety basis of the package. Thus, a structural finite element analysis was performed to investigate this concern. The investigation examined the effect of replacing the material properties for the FR-3716 polyurethane foam, which has a density equal to 16 lb(sub m)/ft(sup 3), with material properties of similar foam with varying densities through finite element analysis of hypothetical accident conditions (HAC) pertaining to impact conditions. The results showed that the functional performance of the containment vessel (CV) was not compromised under the conditions investigated.
Keywords	Containers Foams Radioactive materials Packaging Thermal insulation Shock absorbers Performance Polyurethanes Density Sensitivity Finite element method
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Savannah River National Lab., Aiken, SC.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200902
Contract Number	DE-AC09-96SR18500