Three Design Basis Accidents’ Analysis on the HTR-10GT

Table 8

Accident sequence of an equilibrium core induced by earthquake.

Events	HTR-10GT	HTR-10
Densification of the pebble bed and positive reactivity is induced	0.0 s	0.0 s
Reactor cycle ⩽ 20 s	0.54 s	0.54 s
Neutron flux of power level ⩾1.23	2.54 s	3.03 s
Control rods begin to drop	3.54 s	4.03 s
Time at which reactor power reaches a peak	3.54 s (13.5 MW)	4.29 s (14.0 MPa)
Time at which fuel temperature reaches a peak	3.74 s (980°C)	5.47 s (945°C)
Time at which total positive reactivity reaches a peak (dk/k)	150.0 s (0.788%)	150.0 s (0.788%)