Cask Systems Development Program Seal Technologyby Marcella M. Madsen, Sandia Natl Lab, Albuquerque, United States,
David L. Humphreys, Sandia Natl Lab, Albuquerque, United States,
Ken R. Edwards, Sandia Natl Lab, Albuquerque, United States,
Abstract: General design or test performance requirements for radioactive materials (RAM) packages are specified in Title 10 of the U.S. Code of Federal Regulations Part 71 (10 CFR 71). Seals that provide the containment system interface between the packaging body and the closure must function in both high- and low-temperature environments under dynamic and static conditions. Experiments were performed to characterize the performance of several seal materials at low temperatures. Helium leak tests on face seals were used to compare the materials. Materials tested include butyl, neoprene, ethylene propylene, fluorosilicone, silicone, Eypel, Kalrez, Teflon, fluorocarbon, and Teflon/silicone composites. Results show that the seal materials tested, with the exception of silicone S613-60, are not leak tight (1 × 10-7 std cm3/s) at manufacturer low-temperature ratings.
Subject Headings: Material tests | Composite materials | Radioactive materials | Hazardous materials | Temperature effects | Leakage | Silica | Radioactive wastes
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