Description

When the canister is loaded mechanically, for example when the buffer swells, stresses will be built up in the canister material, which deforms elastically at first but plastically if the stresses are large.

SKB Number

SKB FEP Number

C03

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. Isostatic and shear loads modelled in design analysis of canister, see section 5.4.3 in SR-Site Main report, SKB TR-11-01. (Uneven loads from uneven swelling of the buffer and lack of straightness of the deposition hole included). Considered as cause for failure when isostatic or shear loads on canister exceed design premises loads. Failed canister. Description in section 2.3.1 of the SR-Site Fuel and canister process report, SKB TR-10-46, integrated with other relevant processes yielding simplified, pessimistic assumptions on retardation in failed canister depending on failure mode.

References

Bibliographic references to obtain more information

SR-Site Fuel and canister process report, TR-10-46, Section(s) 1.10, 3.4.2; SR-Site Main report, TR-11-01, Section(s) 5.4.3