Comprehensive testing to measure the response of butyl rubber to Hanford tank waste simulant

NIGREY,PAUL J.

Sandia National Laboratories

关键词: 42 Engineering;    Plastics;    Radioactive Wastes;    Waste Transportation;    Sealing Materials;   

DOI  :  10.2172/756446
RP-ID  :  SAND2000-1280
RP-ID  :  AC04-94AL85000
RP-ID  :  756446

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report presents the findings of the Chemical Compatibility Program developed to evaluate plastic packaging components that may be incorporated in packaging mixed-waste forms for transportation. Consistent with the methodology outlined in this report, the authors performed the second phase of this experimental program to determine the effects of simulant Hanford tank mixed wastes on packaging seal materials. That effort involved the comprehensive testing of five plastic liner materials in an aqueous mixed-waste simulant. The testing protocol involved exposing the materials to {approximately}143, 286, 571, and 3,670 krad of gamma radiation and was followed by 7-, 14-, 28-, 180-day exposures to the waste simulant at 18, 50, and 60 C. Butyl rubber samples subjected to the same protocol were then evaluated by measuring seven material properties: specific gravity, dimensional changes, mass changes, hardness, compression set, vapor transport rates, and tensile properties. From the analyses, they determined that butyl rubber has relatively good resistance to radiation, this simulant, and a combination of these factors. These results suggest that butyl rubber is a relatively good seal material to withstand aqueous mixed wastes having similar composition to the one used in this study.