On the basis of hazard identification, risk assessment is conducted by combining qualitative assessment with quantitative assessment, qualitative assessment adopts direct judgment method, and quantitative assessment adopts working condition risk assessment method.
5.2. 1 direct judgment method
The direct judgment method should mainly consider the compliance of laws and regulations and the experience and lessons of similar accidents. When the current situation of hazards does not meet the requirements of laws, regulations, standards and specifications, or similar accidents or incidents have occurred, they should be directly judged as important hazards.
According to hazard source and system risk
Evaluate the product of three related factors.
The risk of casualties of system personnel. Its expression is.
D=L*E*C
D- risk score,
The possibility of an accident.
E- risk frequency,
C-the severity of the possible consequences of the accident.