EVALUATION OF FIRE HAZARDS WHILE REPACKAGING PLUTONIUM-CONTAMINATED SCRAP IN HB-LINE

Hallman, D

Savannah River Site (S.C.)

关键词: Fire Hazards;    Diffusion;    08 Hydrogen;    Water Vapor;    Scrap;   

DOI  :  10.2172/890154
RP-ID  :  WSRC-TR-2003-00575
RP-ID  :  DE-AC09-96SR18500
RP-ID  :  890154

美国|英语

来源: UNT Digital Library

【 摘 要 】

The potential for a fire while repackaging plutonium-contaminated scrap was evaluated. The surface-to-mass ratio indicates the metal alone will not spontaneously ignite. Uranium hydride can form when uranium metal is exposed to water vapor or hydrogen; uranium hydride reacts rapidly and energetically with atmospheric oxygen. The plutonium-contaminated scrap has been inside containers qualified for shipping, and these containers are leak-tight. The rate of diffusion of water vapor through the seals is small, and the radiolytic hydrogen generation rate is low. Radiography of samples of the storage containers indicates no loose oxide/hydride powder has collected in the storage container to date. The frequently of a fire while repackaging the plutonium-contaminated scrap is extremely unlikely.