REVIEW OF ACTINIDE AND STRONTIUM LOADING DATA FOR MST AND MMST

Peters, T. ; Hobbs, D. ; Fink, S.

Savannah River Site (S.C.)

关键词: Criticality;    Uranium;    Strontium;    Neptunium;    Actinides;   

DOI  :  10.2172/1041518
RP-ID  :  SRNL-STI-2010-00534
RP-ID  :  DE-AC09-08SR22470
RP-ID  :  1041518

美国|英语

来源: UNT Digital Library

【 摘 要 】

SRNL reviewed the relevant data from MST and mMST fissile loading studies to determine if further studies were required. With respect to MST, SRNL found that the published results adequately bound the expected conditions that Small Column Ion Exchange (SCIX) process will operate under. The lack of strontium data does not represent an issue as strontium is not relevant to criticality. There is no threat to criticality safety from the lack of strontium loading data. However, SRNL proposes a single test with MST to ensure that future SCIX operations are conservatively bounded and strontium maximum loading is understood. With respect to attempts to maximally load mMST, SRNL's knowledge on actinide and strontium loading is limited to uranium behavior. mMST has a very weak affinity for uranium, and even extended contact time at high uranium concentration shows minimal loading onto mMST. This leaves questions about the ability to load plutonium, neptunium and strontium. SRNL proposes to perform two tests with mMST to ensure that questions on plutonium, neptunium, and strontium sorption are answered, as well as ensuring that future mMST operations are conservatively bounded.