Abstract
Two types of creep rigs are described using stainless steel or Zircaloy specimens. First, a tensile creep rig allowing continuous length measurement of tubular or solid specimens. The measurement of the specimen length is compared with that of a reference specimen, situated as close as possible to the tensile one. The second rig is used for continuous measurement of the radial strain of pressurised tubes. The measurement is made by a cone and ball system, transforming diameter changes into axial displacements. These rigs are made in two parts: a capsule with NaK, including: specimens, loading bellows, microwave measuring system. And a standard “Chouca”furnace with electrical heating.
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