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