Savannah River Site/K Area Complex getter life extension report.

Shepodd, Timothy J. ; Woodsmall, Todd (Savannah River Site, Aiken, SC) ; Nissen, April

关键词: AGING;    CONTAINERS;    GETTERS;    HYDROGEN;    OXYGEN;    PERFORMANCE;    PLUTONIUM OXIDES;    RECOMBINATION;    SANDIA NATIONAL LABORATORIES;    STORAGE;    TESTING;    WATER Nuclear fuels-Storage.;    Plutonium-Storage.;   

DOI  :  10.2172/948330
RP-ID  :  SAND2008-5530
PID  :  OSTI ID: 948330
Others  :  TRN: US0901673

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

The K Area Complex (KAC) at the Savannah River Site (SRS) has been utilizing HiTop hydrogen getter material in 9975 Shipping Containers to prevent the development of flammable environments during storage of moisture-containing plutonium oxides. Previous testing and subsequent reports have been performed and produced by Sandia National Laboratories (SNL) to demonstrate the suitability and longevity of the getter during storage at bounding thermal conditions. To date, results have shown that after 18 months of continuous storage at 70 C, the getter is able to both recombine gaseous hydrogen and oxygen into water when oxygen is available, and irreversibly getter (i.e. scavenge) hydrogen from the vapor space when oxygen is not available, both under a CO{sub 2} environment. [Refs. 1-5] Both of these reactions are catalytically enhanced and thermodynamically favorable. The purpose of this paper is to establish the justification that maintaining the current efforts of biannual testing is no longer necessary due to the robust performance of the getter material, the very unlikely potential that the recombination reaction will fail during storage conditions in KAC, and the insignificant aging effects that have been seen in the testing to date.