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)