Description

Water in the canister cavity and in the annulus between copper and cast iron will corrode the cast iron insert. As a consequence of this process, the cast iron insert's integrity and mechanical strength may be jeopardised. Another result is the formation of gaseous hydrogen and solid corrosion products, of which the latter can exert pressure against the copper canister.

SKB Number

SKB FEP Number

C08

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. Not relevant. 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, 3.5.1