The development of the standard operating procedure for the SDS in tritium plant

The SDS (Storage and Delivery System) is one of the systems consisting of the tritium fuel cycle in the ITER tritium plant. The main purpose of the SDS is to store the deuterium and tritium and to supply the gases needed for operation of the ITER. In this paper, the standard operating procedure of the SDS is developed in satisfying the functional requirement. The standard operating procedure of the SDS consists of 9 operating modes, which are (1) fuel initial loading, (2) fuel supply during plasma operation, (3) fuel circulation during plasma operation, (4) recovery of fuel (T2, DT, D2) from ISS, (5) in-bed calorimetric measurement helium loop, (6) helium-3 recovery, (7) over pressure protection, (8) ZrCo bed regeneration, and (9) vacuum service line arrangement in the SDS. For each operating mode, the definition, the preparation and prerequisites, and the operating procedure are described. According to this standard operating procedure, the operating flow diagrams are drawn newly and the P and ID based on the FDR-2001 is revised. (orig.)