Abstract
Swelling and irradiation creep interaction occurs under irradiation in cylindrical tubing containing an internal heat source and external heat sink. The swelling and irradiation creep interaction can be measured by axially slitting the tubing while constrained and measuring the slit width change after the constraint is removed. Swelling and irradiation creep interaction data have been obtained from an EBR-II irradiation test. The test consists of encapsulated fuel pins wherein the capsules comprise the test samples and provide the swelling and irradiation creep interaction data. Slit tube data have been obtained on two 20% cold-worked AISI 316 stainless steel capsules irradiated to a peak fluence level of 7.0 × 10 22 n/cm 2 ( E ⩾0.1 MeV). An assessment of the slit tube data was made by comparing the data with performance calculations using empirical swelling and irradiation creep equations.
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