The afterheat and activity inventories were calculated for Eurofer steel which is the reference structural material for DEMO.
The decay heat for the HCPB DEMO was found to be larger than for the HCLL both for short and longer cooling times.
The comparison calculations were performed for a single outboard blanket module of the HCLL DEMO assuming High-Temperature Ferritic–Martensitic (HT-FM) steel and SS-316 (LN) as structural material.