Description

Hydrogen liberated in corrosion processes or during irradiation can be adsorbed by the copper material, change the properties and tendency for cracking under tensile stresses, thus causing embrittlement.

SKB Number

SKB FEP Number

C16

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. Embrittlement due to reduction of oxides neglected. Levels of hydrogen potentially absorbed by copper compared with the levels known to affect the material properties and tendency to crack. Failed canister. Neclected.

References

Bibliographic references to obtain more information

PSAR Fuel and canister process report, TR-21-02, Section(s) 1.9, 3.4.7