1. Risk assessment matrix: Risk assessment matrix usually adopts two dimensions of probability and impact, and divides the possibility and impact of different events into different levels to form a matrix. By mapping the probability and impact of an event to a specific area in the matrix, the risk can be quantitatively evaluated.
2. Quantitative risk analysis: Quantitative risk analysis uses mathematical and statistical methods to determine the probability distribution of various risk events, and calculates numerical indicators of risks by means of simulation and modeling, such as expected loss value and value at risk (VaR).
3.FAHP (Fuzzy Analytic Hierarchy Process): FAHP is a fuzzy mathematical method, which helps decision makers to evaluate safety by dealing with uncertain and fuzzy information. It transforms experts' judgment and knowledge into quantitative data for comprehensive analysis and comparison.
4. Event tree analysis: Event tree analysis is a graphical analysis method to describe the possibility of specific events and the probability of various results. Through the construction of event tree, the probability of different event sequences can be quantitatively evaluated.
5. Fault tree analysis: Fault tree analysis is a logic diagram method used to analyze the possibility and cause of system failure. By constructing the accident tree, the probability of specific events and the possibility of accidents caused by different events can be quantitatively evaluated.
6. Quantitative reliability analysis: Quantitative reliability analysis uses mathematical models and probability statistics methods to analyze the reliability level of a system or equipment. It usually includes the steps of failure mode and impact analysis (FMEA), and the reliability of the system is evaluated by quantitative data.
7. Failure Mode and Impact Analysis (FMEA): FMEA is a systematic quantitative risk analysis method, which is used to determine potential failure modes, analyze their impacts and determine control measures. It quantitatively evaluates the impact of potential failures on system performance and security.