Enterprise operation safety risk assessment system

Abstract

The invention provides an enterprise safety production risk assessment system, which comprises a task library module used for acquiring and screening internal and external operation tasks of an enterprise area. And the step module is used for carrying out step decomposition on each operation task according to an execution function. And the hazard module is used for identifying hazard information in the enterprise operation process. And the risk analysis module is used for identifying the risk possibly caused by the hazard and analyzing the process sequence of converting the risk into the risk and causing the accident. And the risk assessment and grading module is used for carrying out element valuing, calculation and grading processing on the risk. And the control measure module is used for determining a risk response mode and a control measure. And the action plan module is used for generating an action plan and prompting the implementation condition of the risk control measures to the user. According to the system, the whole-process informatization operation of operation risk assessment is realized, the relevance between an accident sequence and a protective measure is particularly deeply analyzed, and the accuracy of risk assessment and the pertinence of a control measure are improved.

Description

Technical Field

[0001] This invention relates to a safety production risk assessment system, and more particularly to an enterprise operation safety risk assessment system. Background Technology

[0002] In the field of work safety, the transformation from traditional to digital work safety has become a trend. Enterprise work safety risk assessment system provides a digital tool for enterprise work safety management. Enterprise work safety risk assessment system refers to the establishment of a digital model for enterprise work safety risk management and real-time synchronization with actual work safety data, thereby realizing the dynamic identification, assessment, monitoring, control and continuous improvement of enterprise work safety risks.

[0003] Current enterprise safety production risk classification and control technologies, especially operational safety risk control, require numerous risk assessment methods and tools. Traditional operational risk assessment methods multiply two (severity, probability) or three (probability, exposure, and consequences) factors related to the risk, using the product to evaluate the risk level. A hazard score is calculated using the formula, and then a hazard level table is used to determine the degree of danger and implement corresponding control measures. However, traditional methods suffer from several drawbacks when determining the values ​​of factors affecting the final risk value. These include difficulty in judging consequences, simplistic exposure assessment that doesn't focus on the accident development process or identify warning signs, unclear probability assessment standards, and limited applicability. Consequently, the accuracy of risk values ​​is low, making it difficult to implement effective control measures. Especially for operations with high frequency and long duration but a low actual probability of accidents, traditional operational risk assessment standards overemphasize frequency and duration while neglecting the true causal sequence of accidents. This often leads to misjudgments of exposure values ​​and probabilities, resulting in risk control measures focusing only on shortening operation time or reducing the number of operations. However, since actual operational needs are often not met, it is difficult to implement effective control measures to reduce the risk value. The root cause is the failure to correctly analyze and identify the process chain of hazard transformation into risk and its inherent connections.

[0004] At the level of dynamic risk management, traditional risk management mostly focuses on the static results of baseline risk assessment, without dynamically linking the results of baseline risk assessment with the results of problem-based risk assessment and continuous risk assessment. This leads to the actual risk situation becoming decoupled from the risk assessment due to changes or the emergence of hidden dangers. Because risk management lacks dynamism, it cannot play the actual safety management role of risk assessment.

[0005] At the level of risk control measure selection, traditional risk financial management lacks a cost-benefit assessment model, often leaving enterprise managers struggling to choose between the cost and actual control effect of control measures. Summary of the Invention

[0006] This invention aims to address the aforementioned shortcomings in current operational safety risk assessment technologies and provides the following technical solutions to solve the problems of low accuracy in enterprise operational risk assessment, mismatched control measures, and superficial risk management, thereby improving the accuracy of relevant operational risks and scientifically and rationally selecting risk-based control measures: This solution is a data-based enterprise operational safety risk assessment system, which includes the following modules and units, sub-units, and secondary sub-units.

[0007] The system includes the following modules: task library module, step module, hazard module, risk analysis module, risk assessment and classification module, control measures module, and action plan module.

[0008] The modules of the system include the following units: the task library module contains a task acquisition unit and a task filtering unit;

[0009] The risk analysis module includes: a risk identification unit and a risk analysis unit;

[0010] The risk assessment and classification module includes a risk calculation unit and a risk classification unit;

[0011] The control measures module includes a risk management unit and a cost / benefit analysis unit for control measures.

[0012] The sub-units included in each unit of the system are as follows: the risk classification unit includes the baseline risk classification sub-unit and the risk pre-provisioning sub-unit;

[0013] Each subunit of the system contains the following secondary subunits: the risk prediction level subunit includes the change acquisition secondary subunit, the change analysis secondary subunit, and the risk update secondary subunit.

[0014] The functions of each module, unit, and subunit are as follows:

[0015] Task Library Module: This module is used to acquire and organize operational tasks carried out within and outside the enterprise area, including routine and ad-hoc tasks, and then filter them to determine the scope and boundaries of risk assessment.

[0016] Task Acquisition Unit: This unit is used to acquire routine and temporary work tasks performed in the internal and external areas of the enterprise, including suppliers and contractors, as basic units, through input from the acquisition terminal, to build an enterprise work task database and form the first target data set.

[0017] Task filtering unit: This unit is used to perform data cleaning and outlier handling on the first target data set based on preset filtering criteria; delete unqualified data in the first target data set to obtain the second target data set corresponding to the first target data set, that is, to determine the scope of the task.

[0018] Step Module: This module is used to take the second target data set as the basic data range, input work instructions, safety operating procedures and other data at the collection terminal, decompose the work process of each operation into steps according to the execution function, and establish an enterprise work step database with work tasks as the basic unit. Each work step will be regarded as the basic unit for work risk identification.

[0019] Hazard Module. This module is used to identify hazard information in the company's operational processes. Based on organizational geographic maps, process operation diagrams, and other data, it analyzes the hazards in the operational processes for each work step in the company's operational steps database. Hazards are the sources that lead to accidents, usually represented as energy. Referring to a hazard sample set, the module identifies the hazards present in each operational step and analyzes the distribution of various hazards across different job types.

[0020] Risk Analysis Module: This module is used to identify the risks that hazards may cause and analyze the process sequence in which they transform into risks and cause accidents, thereby identifying each link in the risk defense system and possible defense vulnerabilities.

[0021] Risk Identification Unit: This unit is used to identify various risks that hazards may cause. Referring to the risk sample set stored in the system, it determines and classifies the primary and secondary risks caused by the hazard. These include personal safety risks, occupational health risks, equipment risks, and environmental risks. It identifies personnel exposed to the risks, equipment information, and existing control measures.

[0022] Risk Analysis Unit: This unit is used to determine the process by which a hazard transforms into a risk. Referencing the Swiss cheese model (Reaso... n The model decomposes the energy contained in a hazard into an accident sequence through scenario deduction, identifying the first accident sequence and its related control measures. This process helps identify each link in the risk defense system and potential defense vulnerabilities, and provides a quantitative basis for risk assessment and grading.

[0023] Risk Assessment and Classification Module: This module is used to assign element values ​​to risks, calculate risk values, and classify risks, generating an overview of enterprise operational risks and establishing a risk ranking.

[0024] Risk Calculation Unit: Based on preset value standards, it assesses and assigns values ​​to the following three elements: the consequence score (S) of a potential accident caused by a hazard; the frequency of exposure to the hazard factor, i.e., the exposure score (E); and the probability score (P) of the complete accident sequence and its consequences. A digital model for calculating operational risk values ​​is established, and the risk value (parameter R) for each risk is calculated according to the risk assessment formula: Risk Value = Consequence (S) × Exposure (E) × Probability (P).

[0025] Risk Classification Unit: This unit is used to determine the risk level of each risk in the work activity based on the calculated risk value, and serves as the basis for selecting control measures.

[0026] Benchmark Risk Classification Subunit: This subunit is used to assign corresponding risk levels to calculated risk values ​​based on preset risk classification standards. Risk levels are divided into five categories: "Extremely High," "High," "Medium," "Low," and "Acceptable." It generates a benchmark risk database for the enterprise.

[0027] Risk Pre-Assessment Sub-Unit: This sub-unit is used to update the risk value and risk level of the baseline risk assessment in real time based on changes in objective environment, hidden dangers, control measures and other conditions found in the continuous risk assessment.

[0028] Change Acquisition Second-Level Sub-Unit: This second-level sub-unit is used to acquire and determine the changes in conditions existing in the work site. It acquires supporting data for each change in conditions through the acquisition terminal, such as documents and photos of potential hazards, thereby determining the confidence level of the change.

[0029] Change Analysis Second-Level Sub-Unit: This second-level sub-unit is used to analyze whether changes in objective environment, hidden dangers, control measures, and other conditions have an impact on the baseline risk assessment results of the operations involved, and the extent of such impact.

[0030] Risk Update Sub-unit: This sub-unit is used to reassess operational risks affected by changes in assessment results and adjust their risk levels based on the assessment results.

[0031] Control Measures Module: This module is used to determine the response methods for each risk based on the classification and ranking results in the risk classification module, and to calculate and judge the rationality of the control measures based on the cost and effectiveness model of control measures, thereby determining the control measures to be taken.

[0032] Risk Handling Unit: This unit is used to assign risk handling methods based on the risk classification results in the risk classification module, and to input the risks that require corrective action into the database as the data basis for the action plan module.

[0033] Cost / Benefit Analysis Unit for Control Measures: This unit is used to obtain rating scores for the cost and effectiveness (degree of correction) of control measures based on preset value standards, and to calculate the judgment value for cost / benefit analysis through a preset calculation model. Based on the preset judgment standards, it determines whether the expected expenditure of the control measures is appropriate, and determines whether to take the measures through comprehensive judgment.

[0034] Action Plan Module: This module prioritizes risks based on the risk overview and risk ranking generated in the Risk Assessment and Classification module, generates an action plan form / database, and prompts the user with the implementation status of risk control measures identified in the Control Measures module.

[0035] The beneficial effects of this plan are:

[0036] The risk analysis unit addresses the problems of unclear assessment standards and inaccurate risk value calculations in traditional operational safety risk management models. It provides a new standard for assessing operational safety risks and generates a calculation model. By defining the assessment standards for the consequences, exposures, and probabilities of various risks involved in the operation process more clearly and with a higher degree of quantification, it identifies and decomposes the process sequence from hazard to risk and ultimately to accident, improving the accuracy of risk values ​​and risk levels for various operational risks. In particular, the redefinition of exposure value criteria improves upon traditional assessment methods such as risk matrix methods and LEC, which only consider superficial exposure factors like work frequency and duration, neglecting the actual underlying causes or the first unexpected event. It decomposes the process of hazard transforming into risk and ultimately leading to an accident into an accident process sequence, linking the probability of each stage in the sequence to the effectiveness of corresponding control measures. This allows for a more accurate estimation of exposure values ​​based on the probability of control measures failing at each stage, especially the first accident sequence, triggering the next sequence. Simultaneously, it avoids the problem of inflated exposure or probability values ​​caused by overemphasizing work frequency and duration in traditional assessment methods, leading to inaccurate risk ratings and inappropriate risk handling and prioritization. This ensures the accuracy and practical feasibility of the assessment results and guarantees the targeted selection of control measures. Furthermore, because this unit identifies the first unexpected event that may trigger the accident sequence, it facilitates the implementation of targeted control measures by enterprises to prevent the occurrence of the first unexpected event, thus shifting the risk control point forward.

[0037] The risk prediction sub-unit provides real-time alerts and dynamic updates to the risk value and risk level of the operational baseline risk assessment when conditions such as objective environment, hidden dangers, and control measures change. This achieves the integration and linkage between operational safety risk baseline assessment and daily inspections, meeting the dynamic and predictive requirements of risk management and completing the closed loop of enterprise safety risk management.

[0038] The cost / benefit analysis sub-unit for control measures provides a calculation model for the applicability of control measures, offering a quantitative feasibility reference for the selection and implementation of control measures. This prevents impulsive improvement measures from being taken by enterprises, helps them rationally utilize safety funds, and enhances the credibility of their safety management.

[0039] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. The technical solutions of the invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings;

[0041] Figure 1 This is a schematic diagram of an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of a task library module in an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of a risk analysis module in an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of a risk analysis and classification module in an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of a risk classification unit in an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of a subunit of a risk pre-provisioning subunit in an enterprise operational safety risk assessment system according to an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of a control measures module in an enterprise operational safety risk assessment system according to an embodiment of the present invention. Detailed Implementation

[0048] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0049] Please see Figure 1 This invention provides an enterprise operational safety risk assessment system, comprising:

[0050] Task Library Module: This module is used to acquire and organize operational tasks carried out within and outside the enterprise area, including routine and ad-hoc tasks, and then filter them to determine the scope and boundaries of risk assessment.

[0051] Step Module: This module is used to take the second target data set as the basic data range, input work instructions, safety operating procedures and other data at the collection terminal, decompose the work process of each operation into steps according to the execution function, and establish an enterprise work step database with work tasks as the basic unit. Each work step will be regarded as the basic unit for work risk identification.

[0052] Hazard Module: This module is used to identify hazard information in the company's operations. Based on organizational geographic maps, process operation diagrams, and other data, it analyzes the conditions and triggering events for the occurrence of hazards in the work process, referring to the hazard sample set, to determine the hazards present in each work step, and analyzes and statistically analyzes the distribution of various hazards across different job types.

[0053] Risk Analysis Module: This module is used to identify the risks that hazards may cause and analyze the process sequence in which they transform into risks and cause accidents, thereby identifying each link in the risk defense system and possible defense vulnerabilities.

[0054] Risk Assessment and Classification Module: This module is used to assign element values ​​to risks, calculate risk values, and classify risks, generating an overview of enterprise operational risks and establishing risk ranking.

[0055] Control Measures Module: This module is used to determine the response methods for each risk based on the classification and ranking results in the risk classification module, and to calculate and judge the rationality of the control measures based on the cost and effectiveness model of control measures, thereby determining the control measures to be taken.

[0056] Action Plan Module: This module prioritizes risks based on the risk overview and risk ranking generated in the Risk Assessment and Classification module, generates an action plan form / database, and prompts the user with the implementation status of risk control measures identified in the Control Measures module.

[0057] The working principle and beneficial effects of the above technical solution are as follows: The task library module is used to acquire and organize operational tasks performed both within and outside the enterprise area. The personnel involved include staff from various positions within the factory, suppliers, and contractors. The scope of operational tasks includes both routine and temporary tasks. The identified operational tasks are filtered and data is collected according to work teams to generate an operational task library, thereby determining the scope and boundaries of risk assessment. The step module is used to decompose the steps involved in executing operational tasks. For specific operational tasks, reference data such as work instructions and safe operating procedures are input into the data acquisition terminal. Each operational process is decomposed into steps according to its execution function. Using operational tasks as the basic unit, an enterprise operational step database is established. Each operational step is considered a basic unit for operational risk identification. In this embodiment, the completion process of the operational task to be decomposed is divided into several functional stages according to its execution function. Generally, this is divided according to the completion of one functional unit, but there are at least three stages: preparation, execution, and completion. For example, the task of removing foreign objects (bird nests) from a pole can be roughly divided into: loading and unloading and transporting tools; climbing up and down the pole; removing the foreign object; and cleaning up the site. Electric hoist and overhead crane maintenance tasks can be broadly divided into: preparation stage, maintenance platform setup, motor wire removal, motor and drum removal and installation, wire rope replacement, and completion stage. Each task is broken down into steps to form an enterprise operation step database. The hazard module is used to identify and input hazard information in each operation step. In this embodiment, for the operation steps in the enterprise operation step database, based on organizational geographic maps, process operations, or flowcharts, the conditions and triggering events of hazard sources during the operation are analyzed. Referring to the hazard sample set, the hazards present in each operation step are determined, and the distribution of various hazards across different job types is statistically analyzed. After identifying and determining a hazard, relevant information is quantitatively described and input. The information collected by the acquisition end includes, but is not limited to: the volume and quantity of the hazard, the concentration of hazardous chemicals, the physical properties of the hazard (such as size, shape, temperature, and storage location), the location where the organization uses the hazard, the number and frequency of people exposed to the hazard, the type of exposed population, their skills, and knowledge. For example: the hazard is: hand tools carried at height. The description is as follows: 1. When working at heights, the lack of conditions makes it impossible to secure tools, leading to situations such as leaving hand tools lying around or throwing tools from heights; personnel passing below the work area may be injured by falling tools; 2. Work location height: 3-5 meters; 3. Commonly used tools: wrenches, screwdrivers; weight approximately 5 kg; 4. Frequency of instances of leaving hand tools lying around or throwing tools from heights; 5. All 8 people in the shift may face this hazard while performing this task. The risk analysis module is used to identify the potential risks posed by the hazard and the process by which it transforms into a risk, thereby identifying vulnerabilities in the risk defense system.In one embodiment, the risk analysis module processes the data in the hazard module, i.e., the hazards present in each identified work step, identifies various risk consequences that hazards may cause, and identifies and outputs all conditions under which hazards transform into risk consequences. It generates an enterprise operational risk dataset and clarifies all intermediate links in the work task steps where hazards appear, transform into risks, and ultimately lead to accidents. This creates conditions for implementing control measures at each stage that leads to an accident, cutting off the chain of accidents, and moving the risk control point forward. The risk assessment and classification module is used to calculate and classify identified risks, generate an enterprise operational risk overview, and establish a risk ranking. In this embodiment, for the risks identified in the risk analysis module, this module assigns values ​​to the three risk elements: consequence, exposure, and probability. The risk value for each risk is calculated according to the risk assessment formula "Risk Value = Consequence (S) × Exposure (E) × Probability (P)". After calculating the risk value, the baseline risk level is determined according to the risk value, generating an enterprise baseline risk database and a risk overview. When changes occur in objective environment, potential hazards, and control measures, the risk pre-assessment sub-unit determines whether the changes will affect the risk element assignment. If an impact occurs, the risk value and risk level of the baseline risk assessment are updated in real time. The control measures module determines the response methods for each risk based on the classification and ranking results in the risk grading module and calculates the rationality of the control measures based on the cost and effectiveness model. In one embodiment, it first determines whether the operational risk value is greater than a preset value, filters out all risks greater than the preset value and ranks them. Based on the accident sequence analysis results in the risk analysis module, it selects possible additional or improved control measures for each stage where the hazard transforms into risk, and performs cost / benefit analysis calculations on each option. Based on the calculation results and a comprehensive judgment considering on-site operability, suitability, and resource availability, it determines whether the control measures are adopted and records the adopted control measures in the database as the source of action content in the action plan module. The action plan module prioritizes and sorts the risks based on the risk overview and risk ranking formed in the risk assessment and grading module, generates an action plan form / database, and prompts the user with the implementation status of the risk control measures determined in the control measures module. In one embodiment, after risk control measures are determined in the control measures module for each operational risk, the risks are ranked according to the risk overview and given priority. An action plan form / database is generated in this module to determine the responsible person, implementation deadline, and acceptance criteria for the risk control measures. When the risk control measures exceed the implementation deadline, the system issues a reminder notification to the relevant responsible person.

[0058] Please see Figure 2 In one embodiment, the task library module includes:

[0059] Task Acquisition Unit: This unit is used to acquire routine and temporary work tasks performed inside and outside the enterprise area, including suppliers and contractors, as basic units through input from the acquisition terminal, build an enterprise work task database, and form the first target data set.

[0060] In this embodiment, all geographical areas are listed, and work areas are divided according to the principles of appropriate size, ease of classification, functional independence, ease of management, and clear scope. Examples include a factory building, a grinding mill room, a quarry, a mining face, and a shaft. All activities within each area are listed, such as grinding, drilling, loading, bundling, cleaning, preparation, and driving. This facilitates the determination of risks in each activity through a risk sample database, brainstorming, reactive and preventative information. All occupations involved in each activity are listed, identifying which are critical tasks, such as grinders, drillers, bundling workers, cleaners, and drivers. All tasks to be completed by each occupation are listed, such as operating the grinding machine, drilling, cleaning with hoses, and preparing the working face. Once all work tasks are acquired, the first target data set is formed, namely the enterprise work task database.

[0061] Task Screening Unit: This unit is used to perform data cleaning and outlier handling on the first target data set based on preset screening criteria; delete unqualified data in the first target data set, such as job tasks that have been canceled or replaced by other methods, to obtain a second target data set corresponding to the first target data set, that is, to determine the scope of job tasks that need to be evaluated; this unit can also be used to supplement missing job task data or add new job task data in the first data set, as well as modify job task data that needs to be adjusted due to changes in job content.

[0062] Please see Figure 3 The risk analysis module includes:

[0063] Risk Identification Unit: This unit is used to identify various risks that hazards may cause. In this embodiment, after identifying the hazards present in each work step, the unit refers to the risk sample set stored in the system to determine the primary risks caused by the hazards, as well as the secondary risks that may occur after the primary risks transform into accidents or during the transformation process. The primary and secondary risks are then classified. Risks can be classified as personal safety risks, occupational health risks, equipment risks, environmental risks, etc., and the accident categories caused by the risks are determined according to preset reference standards, i.e., refined risk types. For example, personal safety risk classification refers to the "Classification Standard for Enterprise Employee Injury and Death Accidents" (GB 6441) to determine the possible accident categories, such as object strikes, vehicle injuries, machinery injuries, crane injuries, electric shocks, roof falls, drowning, burns, fires, falls from heights, collapses, boiler explosions, container explosions, other explosions, poisoning and asphyxiation, and other injuries. The unit identifies personnel and equipment exposed to the risks, as well as existing control measures. The risk identification results are incorporated into the risk database. This unit can be added, deleted, and modified according to changes in higher-level data such as work content, steps, and hazards.

[0064] Risk Analysis Unit: This unit is used to determine the process by which a hazard transforms into a risk and triggers an accident. Referring to the Swiss cheese model (Reason model), the process from hazard discovery to accident occurrence is decomposed into an accident sequence, and the first accident-inducing sequence and its related control measures are identified, providing a basis for determining exposure values. By decomposing the accident occurrence process, potential risk management loopholes in each stage of accident development are identified, and the lack or failure of risk control measures in each stage is analyzed to ensure the effective operation of various control measures. Defects or loopholes are intercepted in a complementary manner from different dimensions. In one embodiment, after identifying the relevant risks caused by the hazard in the risk identification unit, the process of the hazard evolving into a risk and then into an accident is simulated. For example, in the step of dismantling the crane motor during crane maintenance work (working at height), the hazard is identified as "height," and the risk identification unit identifies the risk as a fall from height risk. The sequence of unexpected events that trigger an accident can be decomposed into several stages: unsafe climbing tools or uneven platform – loss of balance – personnel falling from height resulting in injury or death. The accident sequence is designed so that an accident will only ultimately occur when the control measures at each stage are simultaneously deficient.

[0065] Please see Figure 4 In one embodiment, the risk assessment and classification module includes:

[0066] Risk Calculation Unit: This unit is used to judge and assign values ​​to the following three elements based on preset value standards: the consequence score (S) of the hazard causing a possible accident; the frequency of exposure to the hazard factor, i.e., the exposure score (E); and the probability score (P) of the complete accident sequence and the occurrence of consequences.

[0067] The consequences are defined as the most likely outcome of an accident caused by a hazard, including injury, illness, occupational disease, occupational illness, property damage, or environmental damage. The most likely consequences of an accident are assigned a numerical score (S), which is divided into 6 levels based on preset value criteria.

[0068] Exposure is defined as the frequency of occurrence of a hazardous event (or environmental hazard event) or the dose of occupational exposure. A hazardous event is the first unexpected event that may trigger an accident sequence, or it can be described as the first condition for a hazard to transform into a risky consequence. Exposure values ​​are assigned a numerical score (E), which is divided into 6 levels based on preset value standards.

[0069] Probability is defined as the chance, once a hazardous event occurs, of the complete sequence of events over time leading to an accident and its consequences. Probability values ​​are assigned numerical scores (P), divided into six levels based on preset criteria.

[0070] Establish a digital model for calculating operational risk values, and calculate the risk value (parameter R) for each risk based on the risk assessment formula: Risk Value = Consequence (S) × Exposure (E) × Probability (P).

[0071] For example: If the most likely scenario is that an explosion could result in one death, the consequence score is 25 according to the preset criteria. If the first possible event in the explosion sequence is a "malfunction of the automatic control device" and has "occurred before," the exposure score is 1 according to the preset criteria. If all equipment is equipped with two-level emergency stop controls and has comprehensive maintenance procedures, the possibility of a series of control measures failing is extremely low. The probability score is 1 according to the preset criteria.

[0072] According to the risk assessment formula: Risk value (parameter R) = Consequence (S) × Exposure (E) × Probability (P), the risk value of this explosion risk is calculated to be 25 × 1 × 1 = 25.

[0073] Risk Classification Unit: This unit is used to determine the risk level of each risk in the work activity based on the calculated risk value, and serves as the basis for selecting control measures.

[0074] Please see Figure 5 In one embodiment, the risk classification unit includes:

[0075] Benchmark Risk Grading Subunit: This unit assigns corresponding risk levels to calculated risk values ​​based on preset value standards. Risk levels are categorized into five levels: "Extremely High," "High," "Medium," "Low," and "Acceptable." For example, in one embodiment, if a calculated risk value equals 30, then according to the preset value standards, this risk value falls within the 20-70 range, corresponding to a "Low" risk level and a "Potential Risk" risk hierarchy. All risk values, risk levels, and risk hierarchy are stored to generate the enterprise benchmark risk database.

[0076] Risk Pre-Assessment Sub-Unit: This sub-unit is used to update the risk value and risk level of the baseline risk assessment in real time based on changes in objective environment, hidden dangers, control measures and other conditions found in the continuous risk assessment.

[0077] Please see Figure 6 In one embodiment, the risk pre-provisioning subunit includes:

[0078] Change Acquisition Second-Level Subunit: This second-level subunit is used to acquire and determine changes in conditions existing in the work site. It obtains supporting documentation for each change through the data acquisition terminal, such as documents and photos of potential hazards, to determine the confidence level of the change. If the change is caused by changes in laws and regulations, the relevant legal clauses need to be entered. After a hazard is discovered, photos or videos of the hazard are submitted as evidence to determine whether the change has actually occurred. The judgment result is used as a prerequisite for change analysis and risk updates.

[0079] Change Analysis Second-Level Sub-Unit: This second-level sub-unit is used to analyze whether changes in objective environment, hidden dangers, control measures, and other conditions affect the baseline risk assessment results of the operations involved. First, it analyzes changes that meet the confidence requirements and determines whether the changes will affect the three risk factors: consequences, exposure, and probability.

[0080] Risk Update Sub-unit: This sub-unit reassesses the operational risks affected by changes in the assessment results and adjusts their risk levels accordingly. For risks where the change has an "impact" on the three risk factors, it determines whether the impact will lead to a change in the risk value. If it is determined that "it will lead to a change in the risk value," the score after the change is taken and the risk level is recalculated based on the calculation result. For example, if the baseline risk score (R) for a certain operational risk is 25(S) × 1(E) × 1(P) = 25, the risk level is level 4. Because of the change, the consequences and probabilities of this operation have been affected, but the exposure has not been affected. After assessment, the consequences score increases from 25 to 50, the exposure score remains at 1 due to the change, and the probabilities score increases from 1 to 2. Therefore, the baseline risk score for the operation affected by the change is (R) = 50(S) × 1(E) × 2(P) = 100, and the risk level is level 3.

[0081] If the change is caused by a potential hazard, the situation will be sent to the relevant responsible personnel in accordance with the company's hazard management regulations for risk warning and to notify them to carry out hazard remediation. Before the hazard remediation is completed, the risk level of this operation will remain at the pre-raised level, that is, the risk level will remain at level 3. After the hazard is eliminated, the risk level will be adjusted back to level 2.

[0082] If the risk is caused by other objective issues such as organizational restructuring or changes in operating procedures, the data in the benchmark risk database will be updated directly.

[0083] Please see Figure 7 In one embodiment, the control measures module includes:

[0084] Risk Management Unit: This unit is used to filter out risks requiring corrective action based on the risk classification results in the risk classification module, and input them into the database as the data foundation for the action plan module. For risks with risk values ​​greater than preset values ​​in the assessment results, control measures should be proposed. Control measures can be proposed from both management and engineering / technical perspectives, with priority given to engineering / technical measures. Based on the risk occurrence sequence decomposition function of this system, control measures will be matched to each risk chain. For example, control measures for falls from heights will no longer rely solely on the use of safety belts as in traditional risk control measures. Instead, the fall accident will be decomposed into five stages according to the occurrence sequence: "uneven or slippery platform - loss of balance - person falls from height - injury or death accident." Corresponding control measures will be matched to each stage. For example, cleaning the platform environment can control the "uneven or slippery platform" stage, thereby reducing its exposure value. For stages such as "using substandard safety belts" and "person falls from heights," measures such as "daily maintenance and pre-use inspection of safety belts," "installation of safety nets," and "daily maintenance and pre-use inspection of safety nets" can reduce the probability score of their occurrence. The consequences of reducing risk are scored through measures such as "providing first aid kits on-site".

[0085] Cost / Benefit Analysis Unit for Control Measures: This unit is used to obtain rating scores for the cost and effectiveness (degree of correction) of control measures based on preset value standards, and to calculate the judgment value of cost / benefit analysis through a preset calculation model. Based on the preset judgment standards, it determines whether the expected expenditure of control measures is appropriate. All risk control measures should undergo risk financial analysis before being determined to ensure their economy and rationality. At the same time, their feasibility, applicability, and operability should be analyzed in conjunction with the actual situation on site, with particular attention to the assessment of new risks that may be brought about by the implementation of risk control measures.

[0086] In one embodiment, the cost / benefit analysis unit of control measures classifies and values ​​the costs of corrective actions by an enterprise based on preset standards, generating cost factor values.

[0087] The cost / benefit analysis unit for control measures, based on preset standards, classifies and assigns values ​​to the degree to which the enterprise's proposed corrective measures eliminate or mitigate risks, generating a correction degree value.

[0088] The consequence score (S), exposure score (E), and probability score (P) of this operational risk, along with the cost factor and correction degree values ​​of the risk control measures generated in this unit, are substituted into the calculation model in this unit to calculate the cost / benefit analysis value (J) of this risk measure. A judgment is made based on a preset standard: if the judgment (J) ≥ 10, it indicates that the expected cost of the control measure is appropriate; if the judgment (J) < 10, it indicates that the expected cost of the control measure is inappropriate. This judgment formula provides guidance to the enterprise's safety department and management on whether the determined cost of safety recommendations is appropriate, and provides a solid foundation for adopting and implementing safety improvement measures. This ensures the appropriateness of management's decisions on safety projects, avoids errors in safety decision-making, and will also lead to greater commitment and support from management for safety.

[0089] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A risk assessment system for enterprise operational safety, characterized in that, include: Task Library Module: Used to acquire and organize operational tasks carried out within and outside the enterprise area, including routine and ad-hoc tasks, and to filter them in order to determine the scope and boundaries of risk assessment. Step Module: Based on the second target data set as the basic data range, the module uses data such as work instructions and safe operating procedures to be input at the acquisition end. It decomposes the work process of each operation into steps according to the execution function, and establishes an enterprise work step database with the work task as the basic unit. Each work step will be regarded as the basic unit for work risk identification. Hazard module: Used to identify hazard information in the enterprise's operation process; for the operation steps in the enterprise's operation step database, based on data such as organizational geographical map, process operation or flow chart, analyze the conditions and triggering events of the occurrence of hazard sources in the operation process, refer to the hazard sample set, determine the hazards existing in each operation step, and analyze and statistically analyze the distribution of various hazards in various jobs. Risk Analysis Module: Used to identify the risks that hazards may cause and analyze the process sequence of their transformation into risks and causing accidents, thereby identifying each link in the risk defense system and possible defense vulnerabilities; Risk assessment and classification module: used to assign element values ​​to risks, calculate risk values ​​and classify them, generate an overview of enterprise operational risks and establish risk ranking; Control Measures Module: This module is used to determine the response methods for each risk based on the classification and ranking results in the risk classification module, and to calculate and judge the rationality of the control measures based on the cost and effectiveness model of control measures, thereby determining the control measures to be taken. Action Plan Module: Based on the risk overview and risk ranking formed in the Risk Assessment and Classification Module, it prioritizes risks, generates action plan forms / databases, and prompts users on the implementation status of risk control measures identified in the Control Measures Module. The task library module includes: Task Acquisition Unit: Taking various job types, including suppliers and contractors, that perform operations inside and outside the enterprise area as the basic unit, the unit acquires routine and temporary work tasks performed inside and outside the enterprise area through input from the acquisition terminal, constructs an enterprise work task database, and forms the first target data set. Task screening unit: Based on preset screening criteria, the first target data set is cleaned and outlier is handled; unqualified data in the first target data set is deleted to obtain the second target data set corresponding to the first target data set, thus determining the scope of the task. The risk analysis module includes: Risk Identification Unit: This unit is used to identify various risks that may be caused by hazards; referring to the risk sample set stored in the system, it determines the primary and secondary risks caused by the hazards and classifies the risks; including personal safety risks, occupational health risks, equipment risks, and environmental risks; and identifies information on personnel and equipment exposed to the risks, as well as existing control measures. Risk Analysis Unit: This unit is used to determine the process by which a hazard is transformed into a risk. Referring to the Swiss cheese model (Reason model), the process from the occurrence of a hazard to the occurrence of an accident is decomposed into an accident sequence, and the first accident sequence and its related control measures are identified. This helps to identify each link in the risk defense system and potential defense vulnerabilities, and provides a basis for determining the exposure value. The risk assessment and classification module includes: Risk calculation unit: Based on preset value standards, the following three elements are judged and valued: the consequence score of the hazard causing a possible accident (S); the frequency of exposure to the hazard factor, i.e., the exposure score (E); and the probability score of the complete accident sequence and the occurrence of consequences (P). Establish a digital model for calculating operational risk values, and calculate the risk value (parameter R) for each risk based on the risk assessment formula: Risk Value = Consequence (S) × Exposure (E) × Probability (P); Risk Classification Unit: This unit is used to determine the risk level of each risk in the work activity based on the calculated risk value, and serves as the basis for selecting control measures; The risk classification unit includes: Benchmark Risk Classification Subunit: This subunit is used to assign corresponding risk levels to the calculated risk values ​​based on preset risk classification standards; the risk levels can be divided into five levels: "Very High", "High", "Medium", "Low" and "Acceptable"; and generate a benchmark risk database for the enterprise. Risk Pre-Assessment Sub-Unit: Used to update the risk value and risk level of the baseline risk assessment in real time based on changes in objective environment, hidden dangers, control measures and other conditions found in the continuous risk assessment. The risk pre-preparation level subunit includes: The second-level sub-unit for change acquisition is used to acquire and determine the changes in conditions existing in the workplace. It obtains supporting data for each change in conditions through the acquisition terminal, such as documents and photos of potential hazards, thereby determining the confidence level of the change. The second-level sub-unit of change analysis is used to analyze whether changes in objective environment, hidden dangers, control measures, and other conditions have an impact on the baseline risk assessment results of the operations involved, and the extent of such impact. Risk update sub-unit: Reassess the operational risks whose assessment results have been affected by changes and adjust their risk levels based on the assessment results; The control measures module includes: Risk Handling Unit: This unit is used to assign risk handling methods based on the risk classification results in the risk classification module, and to input the risks that require corrective action into the database as the data basis for the action plan module. Cost / Benefit Analysis Unit for Control Measures: Based on preset value standards, obtain the level scores of cost and effectiveness (degree of correction) of control measures, and calculate the judgment value of cost / benefit analysis through preset calculation model; based on preset judgment standards, determine whether the expected expenditure of control measures is appropriate, and determine whether to take this measure through comprehensive judgment.

2. The enterprise operational safety production risk assessment system according to claim 1, characterized in that, The risk value calculation elements include: the consequence score of the hazard causing a possible accident; the frequency of exposure to the hazard factor, i.e., the exposure score; and the complete accident sequence and the probability score of the consequences. The formula for calculating risk value is: Risk Value = Consequence (S) × Exposure (E) × Probability (P).

3. The enterprise operational safety production risk assessment system according to claim 2, characterized in that: The consequences are defined as the most likely outcome of an accident caused by a hazard, including injury, illness, occupational disease, occupational illness, property damage, or environmental damage. The most likely consequences of an accident are assigned a numerical score, which is divided into 6 levels based on preset value standards. Exposure is defined as the frequency of occurrence of a hazardous event (or environmental hazard event) or the dose of occupational exposure. A hazardous event is the first unexpected event that may trigger an accident sequence, or it can be described as the first condition for a hazard to transform into a risky consequence. Exposure values ​​were assigned numerical scores; there were six levels based on preset value criteria. Probability is defined as the chance, once a hazardous event occurs, of the complete sequence of events over time leading to an accident and its consequences. The probability value is assigned a digital score, which is divided into 6 levels based on preset value standards.

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