Normal and Accidental Scenarios Analyses with MELCOR 1.8.2 and MELCOR 2.1 for the DEMO Helium-Cooled Pebble Bed Blanket Concept

Table 1

PHTS design data.

Characteristic	Unit	Value
Power	MW	910.5
	°C	300–500
Flow rate	kg/s	875.5
Nominal pressure	MPa	8.0
Total pressure drop	MPa	0.37
Number of CTs		18
Operational/spare CTs		14/4
Coolant mass	kg	6,800.0