Iodine Removal from SRP Dissolver Off-Gas
- Savannah River Site (SRS), Aiken, SC (United States)
- Savannah River Plant (SRP), Aiken, SC (United States)
Iodine-129 and iodine-131 are produced in SRP drivers and targets. Iodine-129 decays by beta emission with a 16 million year half-life and contributes a few percent of offsite dose. Iodine-131 decays by beta emission and gamma emission with a half-life of eight days. Iodine-131 would not be present in fuel dissolved in F-Area unless a short cooled fuel (<180 day) were to be accidentally dissolved during routine processing. Although an accidental release of iodine-131 is a low probability event, it would contribute substantially to off-site dose. Iodine is partially released to the dissolver off-gas (DOG) during reprocessing. SRP removes iodine from the DOG by reaction with silver nitrate coated on Berl saddles. Iodine removal is satisfactory but the life of the bed in F-Area has been less than the design life. About half of the iodine which remains in the dissolver solution is subsequently released to the atmosphere through the process vessel vent system.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM)
- DOE Contract Number:
- AC09-08SR22470
- OSTI ID:
- 1194114
- Report Number(s):
- DPST--82-348
- Country of Publication:
- United States
- Language:
- English
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