Conceptual design on interface between ITER and tritium extraction system of Chinese helium-cooled solid breeder test blanket module

摘要

Tritium extraction system is essential for CN HCSB TBM for safety and technical reasons. Based on the assessments of system functions, integration issues and safety considerations, two main modifications of the system from previous design (Feng et al., 2007 [1]; Chen et al., 2008 [2)) are adopted: a) the TES has been split to 2 parts with one in port cell and another in tritium building. Q_2O in the purge gas is reduced to Q2 in a hot metal bed located in port cell; Q2 is separated from the stream by a pair of cryogenic molecular sieve beds and a Pd/Ag diffuser located in tritium building. b) isotope separation process has been excluded. TES components sizes are estimated and space allocations are estimated. Required services and where and when they are needed are preliminary defined. Fluids delivered towards ITER tritium system are analyzed.