engleski

Extended Burnup Impact on the TN24 Spent Fuel Storage Cask Main Parameters

In order to establish the capability of the TN24 cask for storage of spent fuel assemblies which are beyond the limits given by the manufacturer, a calculations of the dose and heat decay have been made for several cases of burnup higher than 35 GWd/MTU, using the SCALE 4.2 code package. The results were compared with the data obtained from the manufacturer. According to the results of the ORIGEN and SAS4 calculations and taking into the account limitations of the used model, it is possible to estimate that for 50 GWd/MTU burnup at least 15 years cooling time period is necessary to allow the use of TN24 cask.

extended burnup; spent fuel; storage cask; dose rates

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