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

Table 2

Parameters of protection system.

Protection parameters	Triggering value	Triggering error	Delay time
Neutron flux of full power level	≥120%	3%	1 s
Neutron flux of middle power level	≥200%	10%	1–30 s
Reactor period	≤20 s	6%	1 s
Temperature of hot helium	≥790°C	10°C	8 s
Temperature of cold helium	≥345°C	4°C	8 s
Relative variation of the primary flow rate	≤0.75 or ≥1.3	3%	1 s
Absolute sliding rate of the primary loop pressure	≥.03 MPa/min	0.053 MPa/h	1 s
Negative relative varying of the turbine power	≥25%/min	3%	1 s