Abstract
Preliminary risk evaluations have been performed for transuranic waste located at the Idaho National Engineering Laboratory (INEL). The risk was evaluated for several alternatives for long-term management of the waste. Included were leaving the waste as is, improving in-place confinement, and retrieving and processing the waste and shipping it to an offsite geologic repository. For each alternative, the dose commitment and the frequency of radionuclide release from near-term and long-term scenarios were calculated. The results indicate that the risks from retrieval, processing, and shipping are extremely small. Even the worst-case shipping accident would result in a population dose that would be much less than the background dose. For the leave-in-place alternatives, the only scenarios leading to meaningful effects are volcanic action and human intrusion. A number of factors are discussed that make it difficult to perform accurate risk evaluations of transuranic waste management.
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