Description
The gamma- and neutron radiation (from the radioactive disintegrations in the fuel) that extend into the canister interacts with the cast iron insert and the copper shell. Energy is thereby transferred to the materials and the radiation is attenuated. Most of the transferred energy is converted into thermal energy to generate heat.
SKB Number
SKB FEP Number
C01
Main Category
Main category for FEP
Internal process
System Component
System component to which the FEP applies
Cast iron insert and copper canister
Handling
Explanation of how the FEP is treated
Intact canister. Radiation attenuation: Initial radiation levels given in Canister production report, SKB TR-10-14, referring to calculations in the Spent Fuel report, SKB TR-10-13.
Heat generation: Included in integrated modelling of thermal evolution; thermal model.
Failed canister. Neglected when releases occur after period of elevated temperatures.
References
Bibliographic references to obtain more information
SR-Site Fuel and canister process report, TR-10-46, Section(s) 1.10, 3.1.1; Canister production report, TR-10-14, Section(s)