Status of R and D activities on the ITER tritium storage and delivery system

ITER is designed to operate at a nominal fusion power of 500 MW using deuterium and tritium as fuels delivered from a tritium plant. The tritium storage and delivery system (SDS) is one of the major components of the tritium plant. The SDS is designed to store and deliver the tritium and deuterium inventories in the ITER tritium plant. For ITER construction, Korea Domestic Agency (KO-DA) will deliver the tritium storage and delivery system. The system is currently in the detailed design stage to prepare for its procurement. This includes finalizing system composition and layout, completing detailed design of system composition, equipments including the metal-hydride getter bed and layout, and detailed definition of testing (factory and on-site) testing, on-site installation and commissioning. The on-going R and D activities are presented in this paper. R and D activities for the detailed design of the ITER SDS have progressed in two directions: improvements of the getter beds to increase hydrogen recovery and delivery rates from ZrCo under various conditions, the other to investigate the performance of several unit processes that are related to the main operation procedures, both for which experiments have been or will be performed. (author)