In order to understand the consequences of load and unload dwells on power plant materials behaviour at high temperature it is necessary to develop a fundamental understanding of how the internal stresses evolve under load and time, their relationship with the state of the material, and how such stresses affect the macroscopic deformation properties and material ductility.In the present work we first plan to extend the baseline monotonic testwork of Daymond and Bouchard2, using conventional tensile testing strain rates (≈10-5) from 650oC to 750oC. Secondly, we plan to repeat the in-situ neutron creep work of Rao et al.1 using a slow strain rate (≈10-7), also at 750 oC. The data generated will be supported by EBSD studies assessing the level of creep damage introduced in the test specimens using misorientation metrics recently developed by Githinji et al3 at the OU.