Study on the Application of the Kent Index Method on the Risk Assessment of Disastrous Accidents in Subway Engineering

Table 3

Risk acceptance criteria.

Risk value	Risk grade	Risk acceptance level	Response principle
0–1600	IV	Negligible	Risk management can be implemented.
1600–3600	III	Acceptable	Risk management can be implemented, and risk management measures can be taken.
3600–4800	II	Unwilling to accept	Risk management should be implemented to reduce the risk, but the cost of reducing the risk must not be higher than the risk loss.
>4800	I	Unacceptable	Risk management measures must be taken to reduce the risk to grade II.