Comprehensive comparison of commonly used safety evaluation methods
Safety and health are beyond the reach of a thousand pounds. Good safety, less worries, and the whole family is happy. The following is a comprehensive comparison of commonly used security evaluation methods that I have compiled for you. You are welcome to learn from and refer to them. I hope it will be helpful to you.
Since there are many risk assessment methods, each of them has its own scope of application. Here we will give you some common sense distinctions. We make a comparison and explanation from the aspects of evaluation objectives, qualitative/quantitative, method characteristics, scope of application, application conditions, advantages and disadvantages, etc.
1. Evaluation method
Analogy method
Safety checklist
Preliminary hazard analysis (PHA)
Failure Type and Effect Analysis (FMEA)
Failure Type and Effect Hazard Analysis (FMECA)
Event Tree ETA)
Fault Tree (FTA) < /p>
Working Condition Hazard Assessment
Dow Chemical Company Act (DOW)
Imperial Chemical Company Mond Act (MOND)
Japan Labor Six-stage provincial method
Unit risk quick ranking method
Risk and operability research
Fuzzy comprehensive evaluation
2. The evaluation method corresponds to the evaluation purpose
Analogy method: Hazard degree classification, risk classification
Safety checklist: Hazardous and harmful factor analysis safety level
Preliminary risk analysis (PHA): Hazardous and harmful factors analysis risk level
Failure type and impact analysis (FMEA): Failure (accident) cause impact level
Failure type and impact risk analysis ( FMECA): Failure cause, failure level risk index
Event tree ETA): Accident cause triggering condition accident probability
Fault tree (FTA): Accident cause accident probability
Hazard assessment of working conditions: Hazard level
Dow Chemical Company Act (DOW): Fire and explosion hazard level accident losses
Imperial Chemical Company Mond Act (MOND): Fire , explosion, toxicity and overall system risk level
Japan's Ministry of Labor's Six-Stage Law: Hazard Level
Unit Hazard Quick Sorting Method: Hazard Level
Risk and operability research: Deviation, its causes, consequences, and impact on the system
Fuzzy comprehensive evaluation; safety level
3. Evaluation methods correspond to qualitative/quantitative
p>Analogy: Qualitative
Safety Checklist: Qualitative and Quantitative
Preliminary Hazard Analysis (PHA): Qualitative
Failure type and impact analysis (FMEA): Qualitative
Failure type and impact hazard analysis (FMECA); Qualitative and quantitative
Event tree ETA); Qualitative and quantitative
Fault tree (FTA) ): Qualitative and quantitative
Working condition hazard assessment: Qualitative semi-quantitative
Dow Chemical Company method (DOW): Quantitative
Imperial Chemical Company Mond method ( MOND); Quantitative
Six-stage method of the Ministry of Labor of Japan; Qualitative and quantitative
Unit hazard quick ranking method: Quantitative
Risk and operability research: Qualitative
Fuzzy comprehensive evaluation: semi-quantitative
4. Corresponding method characteristics of the evaluation method
Analogy method: using analogies for workplace inspection, statistical data classification and accident statistics Analysis of data and analogy
Safety Checklist: Check item by item according to the checklist prepared in advance with standard requirements, and assign points to assess the safety level according to the prescribed scoring standards
Preliminary Hazard Analysis (PHA) ): Discuss and analyze the dangers, harmful factors, triggering conditions, accident types existing in the system, and assess the risk level
Fault type and impact analysis (FMEA): List, analyze system (unit, component) fault types, Failure cause, failure impact assessment impact procedure level
Failure type and impact risk analysis (FMECA): Same as above.