Abstract
A 16Cr16NiNb stainless steel (steel 1.4981) will be used as wrapper material for SNR 300. Therefore, some in-pile creep tests have been performed with this material in the temperature range 420–700°C. The main objective of this programme was to see, whether the creep rates of steel 1.4981 followed at low fluences (<2.5 × 1022 n/cm2, >0.1 MeV) the same rules as for other austenitic stainless steels. The experiments were performed in the BR2 reactor at Mol/Belgium, using creep rigs which were developed and manufactured by CEN Grenoble. The creep strains were measured by the resonant cavity method. The paper describes the main characteristics of the creep capsules, and reports on the performance of those types of rigs. Finally, the experimental results are presented and discussed.
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