Work safety analysis system and method

Abstract

The invention discloses a system and a method for work safety analysis, which are used for carrying out detailed discussion and analysis on work contents, processes, steps, related material and tool resources and environmental conditions before work, identifying and evaluating harms and risks in a work activity process, and formulating and implementing corresponding measures so as to eliminate, prevent, reduce and control possible risks. The system specifically comprises an analysis group module, a field investigation module, an operation project division module, a hazard event identification module, a risk control measure making module and a result determination module. Through the analysis group module, operation safety analysis can be carried out in a mode of establishing a work safety analysis group; and the group leader of different work safety analysis groups is determined according to different work types, so that work safety analysis work can be better carried out in different work areas, the efficiency of work safety analysis is ensured, and the accuracy of subsequent analysis results is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of work safety analysis, and in particular to a system and method for work safety analysis. Background Art

[0002] Job safety analysis is a systematic risk assessment method conducted before work begins. It aims to identify and control potential hazards in the work process to prevent accidents and injuries. At the same time, job safety analysis is also a preventative safety management tool. It identifies existing hazards and risk factors through pre-assessment and analysis of the workplace, equipment, and operating processes. The analysis process takes into account aspects such as human behavior, the state of objects, environmental conditions, and management measures to assess their potential impact on employee health and safety. The analysis results are used to formulate appropriate safety measures and operating procedures to ensure safety during work.

[0003] For example, the existing CN201810753187.0, a process safety management method based on blockchain technology, realizes the data recording of process safety management through blockchain technology, which not only realizes the safety record of the operation process, but also facilitates the accountability of safety accidents;

[0004] The current work safety analysis system is unable to conduct an effective and comprehensive analysis of different types and aspects of work content when analyzing operational risks, which leads to safety accidents caused by omissions in the analysis during actual operations. At the same time, after conducting the operation safety analysis, the lack of effective supervision and feedback means makes it impossible to effectively apply the analysis results in the field, further reducing the actual effectiveness of the operation safety analysis. Summary of the Invention

[0005] The present invention provides a system and method for work safety analysis, which can effectively solve the problem that the current work safety analysis system proposed in the above background technology is unable to conduct an effective and comprehensive analysis of different types and aspects of work content when analyzing work risks, resulting in safety accidents easily caused by omissions in the analysis during the actual work process. At the same time, after the work safety analysis is conducted, due to the lack of effective supervision and feedback means, the analysis results cannot be effectively applied in the field, further reducing the actual effectiveness of the work safety analysis.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a work safety analysis system that conducts a detailed discussion and analysis of the work content, process, steps, materials, tools, resources involved, and environmental conditions before the work is completed, identifies and evaluates the hazards and risks in the work activities, and formulates and implements corresponding measures to eliminate, prevent, reduce, and control the occurrence of possible risks;

[0007] The system specifically includes an analysis team module, an on-site field investigation module, an operation project division module, a hazard event identification module, a risk control measures formulation module and a result determination module.

[0008] According to the above technical solution, the analysis team module is a team established to conduct work safety analysis. The safety analysis team is composed of 4-8 people. The team leader is the person in charge of the work area or his / her designated person. The team leader selects management personnel, technical personnel, safety personnel, operators, and construction party leaders who are familiar with work safety analysis to form a safety analysis team. The members of the safety analysis team must also include suppliers of equipment and facilities.

[0009] According to the above technical solution, when the analysis team module determines the team leader, for operations carried out during production, the team leader is a local unit personnel who organizes local and maintenance unit personnel to jointly carry out operation safety analysis;

[0010] The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians.

[0011] For operations involving multiple work permits, the work steps are broken down according to the work process, and the corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the regional environment, equipment and related operating procedures.

[0012] According to the above technical solution, the on-site inspection module means that the safety analysis team needs to review the work plan, decompose the work tasks, collect relevant information, inspect the work site, and verify the quality, health, safety, environmental problems and accidents that occurred in the previous work tasks, the working environment, space, lighting, ventilation, exits and entrances;

[0013] The use of new equipment at work, the key links of work tasks, the knowledge and skills of operators, clarify the work permits and the types of work permits, and determine the types of cross-operations that affect work safety.

[0014] According to the above technical solution, when dividing the work project, the work project division module specifically decomposes the work project into multiple processes in sequence, fills in the work safety analysis form, and briefly describes the work content of each work step;

[0015] Divide the work steps into different stages and conduct safety analysis for each different work stage.

[0016] According to the above technical solution, the hazardous event identification module analyzes the accidental energy release that occurs during the work steps through an analysis team, identifies and determines the hazardous events that occur, and formulates control measures to prevent accidental energy release.

[0017] According to the above technical solution, the risk control measures formulation module formulates corresponding control measures for each possible hazardous event, giving priority to control measures to prevent accidental energy release, and then considering control measures to mitigate the expansion of consequences;

[0018] When special operations are involved, control measures must comply with the requirements of relevant operational safety regulations;

[0019] At the same time, a dynamic adjustment mechanism is established to ensure that control measures are updated and improved in a timely manner when risks, processes or external conditions change, and are evaluated using the risk control measures effectiveness evaluation formula REI:

[0020]

[0021] in:

[0022] P i : The prevention intensity of the i-th control measure;

[0023] C i : The degree to which the control measures cover specific risks;

[0024] E i : Implementation efficiency, that is, the probability that the measures are correctly implemented in actual operations;

[0025] R0: original risk value;

[0026] When REI>1, it means that the control measures have a good inhibitory effect on the risk;

[0027] If REI<1, the control strategy needs to be optimized;

[0028]

[0029] W t : Technical blocking capability;

[0030] W o : Organizational control strength;

[0031] W s : Source control level;

[0032] P i scope;

[0033] Where W t 、W o and W sSafety experts, safety engineers or audit teams will give comprehensive scores based on the description of control measures, on-site investigations and system information;

[0034]

[0035] M r : The number of risk scenarios that the measure can directly adapt to;

[0036] M t : The number of all relevant risk scenarios currently identified;

[0037] β: Complexity correction factor, taking into account the severity and frequency of the risk scenario:

[0038] save is the average severity of consequences, that is, the average severity of consequences of all events in the same category; lage is the average probability of occurrence, that is, the average probability of occurrence of each event in a category of hazardous events adapted by the control measure; δ is an artificial adjustment parameter, and 0.1-0.3 is recommended;

[0039] C i ∈[0,1.2], usually not exceeding 1;

[0040]

[0041] N S : The number of times the measure failed to succeed under review;

[0042] N j : total number of checks;

[0043] γ: human dependency correction factor;

[0044] E i ∈[0,1], the theoretical worst is 0 and the best is 1;

[0045] To ensure E i The data must be representative, and spot checks should cover different positions, shifts, and work cycles, using a multi-sample, multi-period sampling method;

[0046] R0=L×S×E

[0047] L: frequency level;

[0048] S: severity of consequences;

[0049] E: Exposure duration or frequency.

[0050] According to the above technical solution, the result determination module is to formulate the control measures for all risks, clarify the coverage of the formulated control measures for all existing risks, and put forward safety operation requirements for the staff implementing the work;

[0051] At the same time, determine the person in charge of implementing risk control measures, improve the "Work Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

[0052] A method for job safety analysis comprises the following steps:

[0053] Step 1: Establish a work safety analysis team;

[0054] Step 2: Review plan and site inspection;

[0055] Step 3: Divide the work project steps;

[0056] Step 4: Identify hazardous events;

[0057] Step 5: Develop risk control measures;

[0058] Step 6: Determine the analysis results.

[0059] According to the above technical solution, in step 1, a work safety analysis team is established. The safety analysis team is composed of 4-8 people. The team leader is the person in charge of the work area or his / her designee. The team leader selects management personnel, technical personnel, safety personnel, operators, and construction personnel who are familiar with work safety analysis to form the safety analysis team. The safety analysis team members must also include the supplier of equipment and facilities.

[0060] When determining the team leader, for operations that are carried out during production, the team leader shall be a member of the local unit, who shall organize the local and maintenance unit personnel to jointly carry out the operation safety analysis;

[0061] The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians.

[0062] For operations involving multiple work permits, the work steps are broken down according to the work process. The corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the local environment, equipment, and relevant operating procedures.

[0063] In step 2, the safety analysis team needs to review the work plan, break down the work tasks, collect relevant information, conduct on-site inspections of the work site, and verify the quality, health, safety, and environmental issues and accidents that have occurred in previous work tasks, as well as the work environment, space, lighting, ventilation, exits, and entrances;

[0064] Step three is to divide the work project into multiple processes in order, fill out a work safety analysis form, briefly describe the work content of each work step, divide the work steps into different stages, and conduct a safety analysis for each different work stage;

[0065] In step 4, the analysis team analyzes the accidental release of energy during the work process, identifies and determines the resulting hazardous events, and formulates control measures to prevent accidental release of energy;

[0066] Step 5: Develop corresponding control measures for each possible hazardous event, prioritizing control measures to prevent accidental energy release, followed by control measures to mitigate the consequences. When special operations are involved, control measures must comply with relevant operational safety regulations.

[0067] Step 6 is to define the scope of all risks covered by the control measures after all risk control measures have been formulated, and to put forward safety operation requirements for the staff who implement the work;

[0068] Determine the person responsible for implementing risk control measures, complete the "Work Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] 1. The analysis team module enables the establishment of work safety analysis teams to conduct work safety analysis. By determining the team leaders of different work safety analysis teams according to different work types, work safety analysis can be better carried out in different work areas, ensuring the efficiency of work safety analysis and improving the accuracy of subsequent analysis results. The on-site inspection module facilitates the review of work plans and arrangements by the safety analysis team, facilitates the rapid and accurate decomposition of work tasks, collects relevant information, inspects the work site, and verifies problems and accidents that occurred in previous work tasks. The use of new equipment at work, the key links of work tasks, and the knowledge and skills of operators can be quickly obtained. Work permits and their types, as well as cross-operation types that affect work safety, can also be quickly determined.

[0071] The work project division module facilitates the decomposition of work projects into multiple processes in sequence, the division of work steps into different stages, and the safety analysis of each different work stage. The hazard event identification module can analyze the accidental energy release in the work steps through the analysis team, identify and judge the hazardous events caused, and formulate control measures to prevent the accidental release of energy.

[0072] 2. The risk control measures formulation module can formulate corresponding control measures for each possible hazardous event, giving priority to control measures to prevent accidental release of energy, and then considering control measures to mitigate the expansion of consequences. When special operations are involved, control measures must comply with the requirements of relevant work safety regulations. After formulating control measures for all risks, the result determination module can clearly define the scope of coverage of the formulated control measures for all existing risks, and put forward safe operation requirements for the staff who implement the work, thereby improving the accuracy and comprehensiveness of work safety analysis and ensuring work safety.

[0073] 3. It realizes a comprehensive evaluation of the effectiveness of control measures, has a clear structure, and has good traceability and operability. In high-risk operations such as high-voltage electrical maintenance, it also introduces new complexity correction factors and human dependence correction mechanisms, which enhance the dynamic nature of the assessment and on-site adaptability. It has innovative methods and application promotion value. It is an important tool to promote safety management from empirical judgment to quantitative evaluation, thereby realizing standardized work safety standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0075] In the attached figure:

[0076] Figure 1 It is a structural block diagram of the analysis system of the present invention;

[0077] Figure 2 1 is a flow chart of the steps of the analytical method of the present invention. DETAILED DESCRIPTION

[0078] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0079] Example: Figure 1 As shown, the present invention provides a technical solution, a work safety analysis system, which conducts detailed discussion and analysis of the work content, process, steps, materials, tools, resources and environmental conditions involved before the work is carried out, identifies and evaluates the hazards and risks in the work activities, and formulates and implements corresponding measures to eliminate, prevent, reduce and control the occurrence of possible risks;

[0080] The system specifically includes an analysis team module, an on-site field investigation module, an operation project division module, a hazard event identification module, a risk control measures formulation module and a result determination module.

[0081] Based on the above technical solution, the analysis team module is a team established to conduct work safety analysis. The safety analysis team consists of 7 people, and the team leader is the person in charge of the work area or his / her designated person. The team leader selects management personnel, technical personnel, safety personnel, operators, and construction party leaders who are familiar with work safety analysis to form a safety analysis team. The members of the safety analysis team must also include suppliers of equipment and facilities.

[0082] Based on the above technical solution, when determining the team leader for the analysis team module, for operations carried out during production, the team leader will be a member of the local unit, who will organize local and maintenance unit personnel to jointly carry out operation safety analysis;

[0083] The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians.

[0084] For operations involving multiple work permits, the work steps are broken down according to the work process, and the corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the regional environment, equipment and related operating procedures.

[0085] Based on the above technical solution, the on-site inspection module means that the safety analysis team needs to review the work plan, decompose the work tasks, collect relevant information, inspect the work site, and verify the quality, health, safety, and environmental problems and accidents that have occurred in previous work tasks, as well as the working environment, space, lighting, ventilation, exits and entrances;

[0086] The use of new equipment at work, the key links of work tasks, the knowledge and skills of operators, clarify the work permits and the types of work permits, and determine the types of cross-operations that affect work safety.

[0087] Based on the above technical solution, when dividing the work project, the work project division module specifically decomposes the work project into multiple processes in order, fills in the work safety analysis form, and briefly describes the work content of each work step;

[0088] Divide the work steps into different stages and conduct safety analysis for each different work stage.

[0089] Based on the above technical solution, the hazardous event identification module uses an analysis team to analyze the accidental energy release that occurs during the work steps, identify and judge the hazardous events that occur, and formulate control measures to prevent accidental energy release.

[0090] Based on the above technical solutions, the risk control measures formulation module formulates corresponding control measures for each possible hazardous event, giving priority to control measures to prevent accidental energy release, and then considering control measures to mitigate the expansion of consequences;

[0091] When special operations are involved, control measures must comply with the requirements of relevant operational safety regulations;

[0092] At the same time, a dynamic adjustment mechanism should be established to ensure that control measures are updated and improved in a timely manner when risks, processes or external conditions change, and evaluated through the risk control measures effectiveness evaluation formula REI:

[0093]

[0094] in:

[0095] P i : the prevention intensity of the i-th control measure (value ranges from 0 to 1, the closer to 1, the stronger the prevention and control capability);

[0096] C i : The degree to which the control measure covers a specific risk (0-1, indicating the breadth of the measure's coverage of this type of risk);

[0097] E i : Execution efficiency, that is, the probability that the measure is correctly implemented in actual operation (0-1);

[0098] R0: original risk value (risk level before control measures are taken);

[0099] When REI>1, it means that the control measures have a good inhibitory effect on the risk; when REI<1, the control strategy needs to be optimized;

[0100] During a 10kV high-voltage electrical equipment maintenance operation, the following major risks were identified:

[0101] Hazard event: Operators accidentally touch live parts, resulting in electric shock;

[0102] Original risk value R0:

[0103] Likelihood L = 4 (more likely)

[0104] Severity S=5 (potentially fatal)

[0105] Exposure time E = 1;

[0106] Calculated R0 = 4*5*1 = 20;

[0107] Create the following table:

[0108]

[0109]

[0110] REI = 1.3265 / 20 = 0.0663;

[0111] REI = 0.0663, which is much lower than 1, indicating that despite multiple measures, the original risk value is too high and the control effect is insufficient. It may be that the dangerous nature of the high-voltage system requires a higher level of control;

[0112]

[0113] W t : Technical blocking capability (such as automatic shutdown, alarm system, 0-1)

[0114] W o : Organizational control strength (such as standard operating procedures, approval processes, 0-1)

[0115] W s : Source control level (such as substitution, elimination, isolation measures, 0-1)

[0116] P i Range: 0 (no effect) - 1 (optimal control);

[0117] For example, P in M1 i W t =0.85, the technology level adopts electrical isolation and indication system, with actual physical and visual control devices;

[0118] W o =0.95, with a clear listing system, work ticket approval process, and two-person confirmation mechanism, indicating strong organizational execution;

[0119] W s =0.90, cutting off the dangerous energy, eliminating the risk at the source, and reaching a safe level;

[0120] Where W t 、W o and W s Safety experts, safety engineers or audit teams will give comprehensive scores based on the description of control measures, on-site investigations and system information;

[0121] P i =(0.85+0.95+0.90) / 3=0.90;

[0122]

[0123] M r : The number of risk scenarios that the measure can directly adapt to;

[0124] M t: The number of all relevant risk scenarios currently identified;

[0125] β: Complexity correction factor, taking into account the severity and frequency of the risk scenario:

[0126] save is the average severity of consequences, that is, the average severity of consequences of all events in the same type of hazardous events; lage is the average probability of occurrence, that is, the average probability of occurrence of each event in a type of hazardous events adapted by the control measure; δ is an artificial adjustment parameter, and 0.1-0.3 is recommended;

[0127] C i ∈[0,1.2], usually not exceeding 1;

[0128] If there are 20 electrical hazards, then M t = 20, and a certain control measure (such as replacing the control switch or adjusting the data) can adapt to 19 of them, then M r =19,β1;

[0129] Then C i =(19 / 20)*1=0.95;

[0130]

[0131] N s : The number of times the measure failed to succeed under review;

[0132] N j : total number of checks;

[0133] γ: human dependency correction factor (e.g., γ = 1.2 for manual operation and γ = 0.8 for automatic control);

[0134] E i ∈[0,1], the theoretical worst is 0 and the best is 1;

[0135] If the control measures are found to be not implemented correctly 2 out of 20 times during the spot check, then:

[0136] E i =1-((2 / 20)*1)=0.90;

[0137] To ensure E i The data must be representative, and spot checks should cover different positions, shifts, and work cycles, using a multi-sample, multi-period sampling method;

[0138] R0=L×S×E

[0139] L: frequency level (1-5);

[0140] S: severity of consequences (1-10);

[0141] E: Exposure duration or frequency (1-8).

[0142] Based on the above technical solution, the result determination module is to formulate the control measures for all risks, clarify the coverage of the formulated control measures for all existing risks, and put forward safety operation requirements for the staff who implement the work;

[0143] At the same time, determine the person in charge of implementing risk control measures, improve the "Work Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

[0144] A method for job safety analysis comprises the following steps:

[0145] Step 1: Establish a work safety analysis team;

[0146] Step 2: Review plan and site inspection;

[0147] Step 3: Divide the work project steps;

[0148] Step 4: Identify hazardous events;

[0149] Step 5: Develop risk control measures;

[0150] Step 6: Determine the analysis results.

[0151] Based on the above technical solution, step one is to establish a work safety analysis team. The safety analysis team will be composed of 7 people, led by the person in charge of the work area or his / her designee. The team leader will select management personnel, technical personnel, safety personnel, operators, and construction personnel familiar with work safety analysis to form the safety analysis team. The safety analysis team members must also include the supplier of equipment and facilities.

[0152] When determining the team leader, for operations that are carried out during production, the team leader shall be a member of the local unit, who shall organize the local and maintenance unit personnel to jointly carry out the operation safety analysis;

[0153] The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians.

[0154] For operations involving multiple work permits, the work steps are broken down according to the work process. The corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the local environment, equipment, and relevant operating procedures.

[0155] Step 2: The safety analysis team needs to review the work plan, break down the work tasks, collect relevant information, conduct an on-site inspection of the work site, and verify the quality, health, safety, and environmental issues and accidents that have occurred in previous work tasks, as well as the work environment, space, lighting, ventilation, exits, and entrances.

[0156] Step three is to divide the work items into multiple processes in order, fill out the work safety analysis form, briefly describe the work content of each work step, divide the work steps into different stages, and conduct safety analysis for each different work stage;

[0157] Step 4: The analysis team analyzes the accidental energy release that occurs during the work steps, identifies and determines the resulting hazardous events, and develops control measures to prevent accidental energy release;

[0158] Step 5: Develop corresponding control measures for each possible hazardous event, giving priority to control measures to prevent accidental energy release, followed by control measures to mitigate the consequences. When special operations are involved, control measures must comply with the requirements of relevant operational safety regulations.

[0159] Step 6: After developing control measures for all risks, clarify the scope of the control measures for all existing risks and put forward safety operation requirements for the staff who implement the work;

[0160] Determine the person responsible for implementing risk control measures, complete the "Work Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

[0161] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A system for work safety analysis, characterized by: Before any operation, conduct a detailed discussion and analysis of the operation content, process, steps, materials, tools, resources and environmental conditions involved, identify and evaluate the hazards and risks in the operation process, and formulate and implement corresponding measures to eliminate, prevent, reduce and control the occurrence of possible risks; The system specifically includes an analysis team module, an on-site field investigation module, an operation project division module, a hazard event identification module, a risk control measures formulation module and a result determination module.

2. A system and method for job safety analysis according to claim 1, characterized in that: The analysis team module is a team that establishes a work safety analysis. The safety analysis team consists of 4-8 people. The team leader is the person in charge of the work area or his / her designated person. The team leader selects management personnel, technical personnel, safety personnel, operators, and construction party leaders who are familiar with work safety analysis to form the safety analysis team. The safety analysis team members must also include suppliers of equipment and facilities.

3. A system and method for job safety analysis according to claim 1, characterized in that: When determining the team leader for the analysis team module, for operations carried out during production, the team leader shall be a local unit personnel, who shall organize local and maintenance unit personnel to jointly carry out operation safety analysis; The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians. For operations involving multiple work permits, the work steps are broken down according to the work process, and the corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the regional environment, equipment and related operating procedures.

4. A system and method for job safety analysis according to claim 1, characterized in that: The on-site inspection module means that the safety analysis team needs to review the work plan, decompose the work tasks, collect relevant information, inspect the work site, and verify the quality, health, safety, environmental problems and accidents that have occurred in previous work tasks, as well as the working environment, space, lighting, ventilation, exits and entrances; The use of new equipment at work, the key links of work tasks, the knowledge and skills of operators, clarify the work permits and the types of work permits, and determine the types of cross-operations that affect work safety.

5. The system and method for job safety analysis according to claim 1, characterized in that: When dividing the work items, the work item division module specifically decomposes the work items into multiple processes in order, fills in the work safety analysis form, and briefly describes the work content of each work step; Divide the work steps into different stages and conduct safety analysis for each different work stage.

6. A system and method for job safety analysis according to claim 1, characterized in that: The hazardous event identification module analyzes the accidental energy release in the work steps through an analysis team, identifies and determines the hazardous events generated, and formulates control measures to prevent the accidental energy release.

7. A system and method for job safety analysis according to claim 1, characterized in that: The risk control measures formulation module formulates corresponding control measures for each possible hazardous event, giving priority to control measures to prevent accidental energy release, and then considering control measures to mitigate the expansion of consequences; When special operations are involved, control measures must comply with the requirements of relevant operational safety regulations; At the same time, a dynamic adjustment mechanism is established to ensure that control measures are updated and improved in a timely manner when risks, processes or external conditions change, and are evaluated using the risk control measures effectiveness evaluation formula REI: in: P i : The prevention intensity of the i-th control measure; C i : The degree to which the control measures cover specific risks; E i : Implementation efficiency, that is, the probability that the measures are correctly implemented in actual operations; R0: original risk value; When REI>1, it means that the control measures have a good inhibitory effect on the risk; If REI<1, the control strategy needs to be optimized; W t : Technical blocking capability; W o : Organizational control strength; W s : Source control level; P i scope; Where W t 、W o and W s Safety experts, safety engineers or audit teams will give comprehensive scores based on the description of control measures, on-site investigations and system information; M r : The number of risk scenarios that the measure can directly adapt to; M t : The number of all relevant risk scenarios currently identified; β: Complexity correction factor, taking into account the severity and frequency of the risk scenario: save is the average severity of consequences, that is, the average severity of consequences of all events in the same type of hazardous events; lage is the average probability of occurrence, that is, the average probability of occurrence of each event in a type of hazardous events adapted by the control measure; δ is an artificial adjustment parameter, and 0.1-0.3 is recommended; C i ∈[0,1.2], usually not exceeding 1; N s : The number of times the measure failed to succeed under review; N j : total number of checks; γ: human dependency correction factor; E i ∈[0,1], the theoretical worst is 0 and the best is 1; To ensure E i The data must be representative, and spot checks should cover different positions, shifts, and work cycles, using a multi-sample, multi-period sampling method; R0=L×S×E L: frequency level; S: severity of consequences; E: Exposure duration or frequency.

8. A system and method for job safety analysis according to claim 1, characterized in that: The result determination module is to define the scope of all risks covered by the control measures formulated after all risk control measures have been formulated, and to put forward safety operation requirements for the staff implementing the work; At the same time, determine the person responsible for implementing risk control measures, improve the "Work Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

9. A method for job safety analysis according to claim 1, characterized in that: The steps include: Step 1: Establish a work safety analysis team; Step 2: Review plan and site inspection; Step 3: Divide the work project steps; Step 4: Identify hazardous events; Step 5: Develop risk control measures; Step 6: Determine the analysis results.

10. A method for job safety analysis according to claim 9, characterized in that: Step 1: Establish a work safety analysis team. The safety analysis team consists of 4-8 people. The team leader is the person in charge of the work area or his / her designee. The team leader selects management personnel, technical personnel, safety personnel, operators, and construction personnel who are familiar with work safety analysis to form the safety analysis team. The safety analysis team members must also include the supplier of equipment and facilities. When determining the team leader, for operations that are carried out during production, the team leader shall be a member of the local unit, who shall organize the local and maintenance unit personnel to jointly carry out the operation safety analysis; The contractor's work is organized by the local unit to conduct work safety analysis. The team members include construction management personnel, construction technicians, operation personnel, safety personnel, supervision personnel, and guardians. For operations involving multiple work permits, the work steps are broken down according to the work process. The corresponding person in charge organizes and conducts a comprehensive work safety analysis. Team members need to understand the work tasks, the local environment, equipment, and relevant operating procedures. In step 2, the safety analysis team needs to review the work plan, break down the work tasks, collect relevant information, conduct on-site inspections of the work site, and verify the quality, health, safety, and environmental issues and accidents that have occurred in previous work tasks, as well as the work environment, space, lighting, ventilation, exits, and entrances; Step three is to divide the work project into multiple processes in order, fill out a work safety analysis form, briefly describe the work content of each work step, divide the work steps into different stages, and conduct a safety analysis for each different work stage; In step 4, the analysis team analyzes the accidental release of energy during the work process, identifies and determines the resulting hazardous events, and formulates control measures to prevent accidental release of energy; Step 5: Develop corresponding control measures for each possible hazardous event, prioritizing control measures to prevent accidental energy release, followed by control measures to mitigate the consequences. When special operations are involved, control measures must comply with relevant operational safety regulations. Step 6 is to define the scope of all risks covered by the control measures after all risk control measures have been formulated, and to put forward safety operation requirements for the staff who implement the work; Determine the person responsible for implementing risk control measures, complete the "Job Safety Analysis Form", list the methods, equipment, tools, materials and technical requirements, and obtain signatures and confirmation from all members of the analysis team.

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