Method for measuring and calculating safe distance of high-temperature gas cooled reactor and related equipment

Abstract

The invention discloses a safe distance measuring and calculating method of a high-temperature gas cooled reactor and related equipment, and relates to the technical field of nuclear energy function project site selection. According to the method, the dangerous facility area is determined, all the devices in the dangerous facility area are classified according to the properties of the stored dangerous media, the device with the largest dangerous media is selected from each classified device set to form the target dangerous device set, the number of the dangerous devices participating in calculation is reduced, and the calculation workload is reduced. And the average meteorological condition is determined and the most unfavorable wind direction data is screened for each dangerous device, so that the calculation amount of the wind direction data is reduced. The accident scene reaching the accident occurrence probability threshold value is screened out from the multiple accident scenes corresponding to the dangerous equipment, the number of the accident scenes participating in calculation is reduced, and the calculation workload is reduced. And finally, inputting the equipment data of each dangerous equipment, the meteorological data and the scene data of the accident scene into the accident scene model to obtain the safety distance of each dangerous equipment.

Description

Technical Field

[0001] The present application relates to the technical field of site selection for nuclear energy functional projects, and in particular to a method for calculating the safety distance of a high-temperature gas-cooled reactor and related equipment. Background Art

[0002] The High Temperature Gas-cooled Reactor (HTGR) is an advanced fourth-generation nuclear reactor technology with inherent safety, high efficiency, and a wide range of applications. It generates electricity through the energy conversion process of nuclear energy, thermal energy, mechanical energy, and electrical energy.

[0003] Taking into account the safety, efficiency, environmental benefits and economic benefits of nuclear energy functional projects related to high-temperature gas-cooled reactors, it is necessary to scientifically and rationally select the construction site for the nuclear energy functional projects of high-temperature gas-cooled reactors. Calculating the safe distance between the high-temperature gas-cooled reactor and the surrounding hazardous sources is an important reference data for site selection.

[0004] In known technologies, it is necessary to investigate and calculate the safe distance between the high-temperature gas-cooled reactor and all surrounding hazardous sources, which requires a very large amount of calculation. Summary of the Invention

[0005] In view of the above problems, this application provides a method and related equipment for calculating the safety distance of a high-temperature gas-cooled reactor to reduce the amount of calculation. The specific solution is as follows:

[0006] In a first aspect, the present application provides a method for calculating a safety distance of a high-temperature gas-cooled reactor, comprising:

[0007] Determine the hazardous facility area from the target area based on the hazardous facility classification index;

[0008] Identify all equipment in hazardous installation areas;

[0009] Classifying all devices according to the properties of hazardous media stored in each device to obtain a plurality of classified device sets; and selecting a device with the largest hazardous media storage capacity from each classified device set; and forming a target hazardous device set from the devices with the largest hazardous media storage capacity in each classified device set;

[0010] Determine meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data selected for each dangerous device in the target dangerous device set;

[0011] From the multiple accident scenarios corresponding to each dangerous equipment, select the accident scenarios that reach the accident probability threshold;

[0012] The equipment data, meteorological data and scenario data of each dangerous equipment are input into the pre-configured accident scenario model to obtain the safe distance between each dangerous equipment and the high-temperature gas-cooled reactor.

[0013] In a possible implementation, the hazardous facility classification indicators include production process, storage method and use function. The hazardous facility area is determined from the target area based on the hazardous facility classification indicators, including:

[0014] The target area is divided into hazardous facility area and safe facility area based on the production process, storage method and usage function of the equipment in the target area.

[0015] In one possible implementation, determining meteorological data includes:

[0016] Determine the average meteorological conditions based on different meteorological conditions within a preset period;

[0017] Filter out the most unfavorable wind direction data corresponding to each dangerous equipment;

[0018] The most unfavorable wind direction data corresponding to each dangerous device are superimposed on the average meteorological conditions to obtain the meteorological data corresponding to each dangerous device.

[0019] In one possible implementation, accident scenarios that reach an accident probability threshold are screened out from multiple accident scenarios corresponding to each hazardous device, including:

[0020] Determine the accident scenarios corresponding to each dangerous equipment and the probability of accident occurrence corresponding to the accident scenarios based on the accident occurrence specifications;

[0021] Eliminate accident scenarios where the probability of an accident occurring is lower than the accident probability threshold.

[0022] In a possible implementation, the most unfavorable wind direction data is the wind direction data corresponding to each dangerous device, which causes the impact range of the dangerous device accident to reach the maximum.

[0023] A second aspect of the present application provides a safety distance calculation device for a high-temperature gas-cooled reactor, comprising:

[0024] a first determining unit, a second determining unit, a first screening unit, a third determining unit, a second screening unit, and a calculating unit; wherein:

[0025] A first determining unit is used to determine a dangerous facility area from a target area according to a dangerous facility classification index;

[0026] a second determination unit for determining all equipment in the hazardous facility area;

[0027] The first screening unit is configured to classify all devices according to the properties of the hazardous media stored in each device to obtain a plurality of classified device sets; and select the device with the largest hazardous media storage capacity from each classified device set; and form a target hazardous device set consisting of the devices with the largest hazardous media storage capacity in each classified device set;

[0028] The third determining unit is used to determine meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data screened for each dangerous device in the target dangerous device set;

[0029] The second screening unit is configured to screen out accident scenarios that reach an accident probability threshold from a plurality of accident scenarios corresponding to each dangerous device;

[0030] The calculation unit is used to input the equipment data, meteorological data and scene data of each dangerous equipment into the preconfigured accident scene model to obtain the safe distance between each dangerous equipment and the high-temperature gas-cooled reactor.

[0031] In one possible line of sight, the third determining unit is configured to:

[0032] Determine the average meteorological conditions based on different meteorological conditions within a preset period;

[0033] Filter out the most unfavorable wind direction data corresponding to each dangerous equipment;

[0034] The most unfavorable wind direction data corresponding to each dangerous device are superimposed on the average meteorological conditions to obtain the meteorological data corresponding to each dangerous device.

[0035] A third aspect of the present application provides a safety distance calculation device for a high-temperature gas-cooled reactor, comprising at least one processor and a memory connected to the processor, wherein:

[0036] Memory is used to store computer programs;

[0037] The processor is used to execute the computer program so that the safety distance calculation device of the high-temperature gas-cooled reactor can implement the safety distance calculation method of the high-temperature gas-cooled reactor as described in any one of the above.

[0038] In a fourth aspect, the present application provides a computer storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the safety distance calculation method for a high-temperature gas-cooled reactor according to the first aspect or any implementation method of the first aspect.

[0039] In a fifth aspect, the present application provides a computer program product comprising computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the method for calculating the safety distance of a high-temperature gas-cooled reactor according to the first aspect or any implementation of the first aspect.

[0040] By means of the above technical solution, the safety distance calculation method and related equipment for high-temperature gas-cooled reactors provided by the present application first determine the hazardous facility area, classify all equipment in the hazardous facility area according to the properties of the hazardous media stored in each equipment, obtain multiple classified equipment sets, and select the equipment with the largest hazardous media from each classified equipment set to form a target hazardous equipment set, thereby reducing the number of hazardous equipment involved in the calculation and reducing the computational workload. Then, the average meteorological conditions are determined and the most unfavorable wind direction data is filtered out for each hazardous equipment in the target equipment set. Only the most unfavorable wind direction data is used to calculate the safety distance for each hazardous equipment, further reducing the computational workload. Then, from the multiple accident scenarios corresponding to each hazardous equipment, accident scenarios that reach the accident probability threshold are filtered out, reducing the accident scenarios involved in the safety distance calculation and further reducing the computational workload. Finally, the equipment data, meteorological data, and scene data of the accident scenario of each hazardous equipment are input into the preconfigured accident scenario model to obtain the safety distance of each hazardous equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0042] Figure 1 This is a flowchart of a method for calculating the safety distance of a high-temperature gas-cooled reactor provided by the present application;

[0043] Figure 2 This is a flowchart of a method for calculating the safety distance of a high-temperature gas-cooled reactor provided in this application;

[0044] Figure 3 This is a schematic structural diagram of a safety distance measurement device for a high-temperature gas-cooled reactor provided in this application;

[0045] Figure 4 It is a structural schematic diagram of the safety distance measurement equipment for the high-temperature gas-cooled reactor provided in this application. DETAILED DESCRIPTION

[0046] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The terms used in the implementation methods of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application.

[0047] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0048] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0049] The High-Temperature Gas-Cooled Reactor (HTGR) is an advanced nuclear energy technology that achieves efficient power generation through the conversion of nuclear energy into thermal energy, mechanical energy, and electrical energy. Specifically, its reactor outlet temperature can reach 700-1000°C, giving it a significant advantage in power generation efficiency. HTGRs can also achieve cogeneration through methods such as steam turbine extraction, which can meet the varying heating duration requirements for industrial and civilian applications. The HTGR's high temperature characteristics broaden its application in the comprehensive utilization of nuclear energy. For example, by further increasing the HTGR's outlet temperature while maintaining essentially unchanged reactor structure and materials, it can be used for higher-temperature nuclear thermal utilization. HTGRs are inherently safe, and they generate relatively little radioactive waste during operation, making it easy to handle and dispose of.

[0050] The siting of a high-temperature gas-cooled reactor needs to consider the safe distance from surrounding hazardous sources. The main reasons include the following: First, as a nuclear energy facility, the high-temperature gas-cooled reactor has potential risks during its operation. If the distance to the surrounding hazardous sources is too close, once an accident occurs, it may trigger a chain reaction, leading to the expansion of the scale and impact of the accident; Second, by calculating and complying with the safe distance, radioactive substances and other hazardous substances will not have too much impact on the surrounding environment when an accident occurs, thus protecting the ecological environment and biodiversity; Third, ensure the safety of surrounding residents and facilities. There are often residential areas, industrial areas or other important facilities around high-temperature gas-cooled reactors. Calculating the safe distance can ensure that these areas are effectively protected during the normal operation of nuclear energy facilities and when accidents occur. Specifically, the safe distance can limit the spread of radioactive substances and other hazardous substances, reducing the threat to surrounding residents and facilities; Fourth, the calculation of the safety distance can quantitatively evaluate and manage the potential risks between the high-temperature gas-cooled reactor and surrounding hazardous sources.

[0051] In known technologies, the calculation process of the safe distance between a high-temperature gas-cooled reactor and surrounding hazardous sources is a complex and rigorous process. It requires collecting data on the design parameters, operating conditions, safety performance, etc. of the high-temperature gas-cooled reactor. It also requires collecting data on the type, scale, location, safety status, etc. of surrounding hazardous sources. It is necessary to combine different meteorological conditions and accident scenarios of surrounding hazardous sources to calculate the safe distance of the high-temperature gas-cooled reactor relative to each surrounding hazardous source one by one. This calculation process involves a large amount of data and a huge amount of calculation.

[0052] In order to solve the above problems, the present application provides a safety distance calculation method for a high-temperature gas-cooled reactor and related equipment.

[0053] See also Figure 1 , a flow chart of a method for calculating the safety distance of a high-temperature gas-cooled reactor provided in this application. Figure 1 As shown, the safety distance calculation method for a high-temperature gas-cooled reactor includes the following steps:

[0054] Step 101: Determine a hazardous facility area from a target area based on a hazardous facility classification index.

[0055] It should be noted that the target area is centered on the high-temperature gas-cooled reactor and the regional scope is further determined. The target area may include residential areas, environmentally sensitive areas and surrounding hazardous sources.

[0056] Peripheral hazards can generally be divided into fire hazards, explosion hazards, and hazardous media release hazards. Fire hazards include equipment storing flammable media, explosion hazards include equipment storing explosive media, and hazardous media release hazards include equipment storing hazardous media.

[0057] Specifically, fire hazards include, but are not limited to, electrical equipment that can cause electrical fires, such as pumps, fans, and compressors. Prolonged operation of these devices can lead to overheating of wires, short circuits, or equipment failure, potentially causing fires. Fire hazards also include, but are not limited to, equipment that stores flammable substances, such as lubricants and cleaning agents. Equipment storing flammable substances can cause fires under certain conditions. Fire hazards can also include equipment that stores chemicals, such as batteries and cleaning agents, which can cause fires if leaked or improperly handled.

[0058] Explosion hazards may include equipment that stores explosive substances, such as pressure vessels in high-temperature gas-cooled reactors, specifically reactor pressure vessels and steam generators. Failure due to material aging, corrosion, or design defects may cause a sharp increase in internal pressure, thereby triggering an explosion.

[0059] Hazard sources of hazardous media release may include equipment storing radioactive materials, toxic gases, flammable and explosive gases, and chemicals.

[0060] The dangerous facility division index is a condition for determining the division of the dangerous facility area. The dangerous facility division index can divide the target area into a dangerous facility area and a safe facility area. The dangerous facility area is an area that includes dangerous equipment.

[0061] Specifically, the indicators for classifying hazardous facilities include, but are not limited to, production process, storage method, and usage function. For example, when the indicators for classifying hazardous facilities are production process and storage method, the designated hazardous facility areas include spherical tank facility areas, LNG (liquefied natural gas) areas, atmospheric and vacuum facility areas, and gas separation equipment areas. For the spherical tank facility area, the storage medium in the spherical tank includes but is not limited to cryogenic materials such as ethylene and liquid nitrogen. Some special gases can also be stored, such as inert gases or rare gases, etc. The storage medium in the spherical tank is generally based on the specific function and design purpose of the facility area where the spherical tank is located; for the liquefied natural gas area, its main storage medium is naturally liquefied natural gas. Liquefied natural gas is generally natural gas that has been treated at low temperatures and is stored in LNG storage tanks in liquid form. Specifically according to the storage pressure, LNG storage tanks can also be divided into atmospheric pressure storage tanks and high-pressure storage tanks; generally, there are atmospheric and vacuum pressure facility areas in comprehensive energy bases or areas where petrochemicals and nuclear energy coexist. The storage medium in the equipment in the atmospheric and vacuum pressure facility area is generally crude oil and various distillate oils produced during its processing, such as gasoline, kerosene, diesel, wax oil, residual oil, etc.; for the gas separation unit area, it includes equipment used for gas separation, purification and processing. The storage medium of these equipment is generally gas products, intermediate products and liquid products, etc.

[0062] Optionally, a hazardous facility area including hazardous equipment is divided from the target area based on hazardous facility division indicators such as production process, storage method and usage function.

[0063] Step 102: Identify all equipment in the hazardous facility area.

[0064] Optionally, survey and record equipment information for all equipment in the hazardous installation area.

[0065] Device information includes but is not limited to data such as device type, device size, device location information, and security status.

[0066] Step 103: Classify all devices according to the properties of the hazardous media stored in each device to obtain multiple classified device sets; and select the device with the largest hazardous media storage capacity from each classified device set; and form a target hazardous device set consisting of the devices with the largest hazardous media storage capacity in each classified device set.

[0067] For all hazardous equipment within a hazardous facility area, some contain the same hazardous medium, while others contain different hazardous media. These hazardous equipment can also be referred to as fixed hazardous sources. Accident scenarios for hazardous equipment containing the same hazardous medium are generally the same. More importantly, the impact range of an accident is positively correlated with the amount of hazardous medium stored in the equipment. In other words, the greater the amount of hazardous medium stored in the equipment, the greater the impact range of the accident. Therefore, the properties of the hazardous medium can serve as a classification standard for all hazardous equipment.

[0068] There are many ways to categorize all equipment based on the properties of hazardous media. In one possible implementation, hazardous media may include radioactive substances, high-temperature fluids, flammable and explosive gases, corrosive substances, and so on. Furthermore, hazardous equipment storing these hazardous media can be classified based on their toxicity, flammability, explosiveness, corrosiveness, and radioactivity.

[0069] It should be noted that for storage devices storing the same type of hazardous medium, the larger the storage capacity, the larger the calculated safety distance, and the calculation result of the safety distance of a hazardous device with a large storage capacity of hazardous medium can include the calculation result of the safety distance of a hazardous device with a small storage capacity of hazardous medium. Therefore, in this application, only the safety distance of the hazardous device with the largest storage capacity among different hazardous media is calculated.

[0070] Optionally, all hazardous equipment in the hazardous facility area is classified according to the properties of its hazardous media to obtain multiple classified equipment sets. Then, the hazardous equipment with the largest hazardous media storage capacity is selected from each classified equipment set to form a target hazardous equipment set. The hazardous equipment with the largest hazardous media storage capacity corresponding to different hazardous media in the target hazardous equipment set is used as the representative equipment for subsequent safety distance calculations.

[0071] For example, in an area, there are five storage tanks, all storing the same hazardous medium. Among them, there are two tanks with a storage capacity of 2,000 cubic meters, one tank with a storage capacity of 3,000 cubic meters, and two tanks with a storage capacity of 5,000 cubic meters. When calculating the safety distance, only the safety distance of the tank with a storage capacity of 5,000 cubic meters needs to be calculated. The accident range of the 5,000 cubic meter tank can cover the accident range of the 2,000 cubic meter tank.

[0072] It can be understood that this application eliminates dangerous equipment except for the dangerous equipment with the largest storage capacity of dangerous media from each classification equipment set, and only uses these dangerous equipment with the largest storage capacity of dangerous media as representatives to participate in the calculation of safety distance. By reducing the number of dangerous equipment participating in subsequent safety distance calculations, the amount of calculation is greatly reduced.

[0073] Step 104: determine meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data selected for each dangerous device in the target dangerous device set.

[0074] It should be noted that meteorological data primarily describes the state and changes of the atmosphere through a collection of various parameters, including but not limited to wind direction, wind speed, temperature, humidity, and precipitation. Wind direction determines the primary direction of diffusion of pollutants or potentially radioactive materials and is crucial for assessing the extent of the impacted area. Wind speed affects the speed and range of pollutant diffusion; understandably, the greater the wind speed, the faster and farther the pollutants spread. Temperature affects atmospheric stability and may also affect the physical state and diffusion capacity of pollutants. Humidity has a certain impact on the adsorption, deposition, and diffusion processes of pollutants. Precipitation helps remove pollutants from the air, but it may also cause other environmental problems such as ground pollution.

[0075] Average meteorological conditions refer to meteorological observation data over a specific period, generally including average temperature, average precipitation, average relative humidity, average wind speed, and may also include average air pressure, average evaporation, sunshine duration, etc. The average meteorological conditions in this application may be annual average meteorological conditions. Specifically, the annual average meteorological conditions may reflect the average conditions of various meteorological elements in the region where the high-temperature gas-cooled reactor is located over a period of one year.

[0076] In meteorological data, wind direction is a key factor in determining the safe distance between a high-temperature gas-cooled reactor and hazardous equipment. Wind direction is crucial for assessing the impact area and scope of hazardous equipment. It's important to note that in addition to the average weather conditions in the area where the high-temperature gas-cooled reactor is located, this data also includes the most unfavorable wind direction data for each hazardous equipment, which maximizes the impact area of ​​any hazardous equipment accident.

[0077] Specifically, the most unfavorable wind direction is the one that poses the greatest threat to the safety of the high-temperature gas-cooled reactor and surrounding hazardous equipment. This wind direction is most likely to blow pollutants or potentially radioactive materials toward densely populated areas or critical facilities. Understandably, the most unfavorable wind direction is the least safe, and the safety distance calculated using the least safe wind direction is the safest. Furthermore, for each hazardous equipment within a target hazardous equipment cluster, only the most unfavorable wind direction is calculated for the safety distance, eliminating the need to consider other wind directions. This significantly reduces the amount of data involved, further reducing the computational effort.

[0078] Optionally, the annual average meteorological conditions are calculated based on meteorological observation data for the area where the high-temperature gas-cooled reactor is located over a period of one year. The most unfavorable wind direction is then determined for each hazardous equipment in the target hazardous equipment cluster.

[0079] In one possible implementation, determining the most unfavorable wind direction is generally divided into three steps:

[0080] Step 1: Collect long-term wind direction frequency data in the area where the dangerous equipment is located to determine the frequency and duration of each wind direction. This process can be achieved by analyzing historical meteorological data or using meteorological models for simulation.

[0081] Step 2: Evaluate the safety impact of different wind directions based on the layout, characteristics, and potential risk sources of the high-temperature gas-cooled reactor and hazardous equipment. This usually requires considering factors such as the relative positional relationship between the wind direction and the hazard source, the frequency and duration of the wind direction, and the possible consequences.

[0082] Step 3: Based on the wind direction frequency and risk assessment results, determine the wind direction that poses the greatest threat to safety as the most unfavorable wind direction.

[0083] Finally, the most unfavorable wind direction data corresponding to each dangerous equipment is superimposed on the average meteorological conditions to obtain the meteorological data in this application, which is subsequently input into the safety distance calculation model to calculate the safety distance.

[0084] Step 105: Filter out accident scenarios that reach an accident probability threshold from the multiple accident scenarios corresponding to each dangerous device.

[0085] It should be noted that each dangerous device corresponds to multiple accident scenarios, and the accident probability of different accident scenarios corresponding to different dangerous devices can be learned based on relevant specifications.

[0086] The accident probability threshold can be expressed as SPL. If the accident rate in an accident scenario corresponding to a hazardous device is less than the SPL, the probability of the accident scenario occurring is extremely low, the scope of impact is extremely small, and it can be disregarded. The SPL can be understood as an accident threshold determined based on the accident rate specified in the accident occurrence specifications for different accident scenarios. Accidents below this threshold indicate an extremely low probability of the accident scenario occurring, a probability that is acceptable to those skilled in the art. Consequently, accident scenarios below the SPL can be disregarded.

[0087] For example, the leakage scenarios of fixed hazardous sources are divided into small hole leakage, medium hole leakage, large hole leakage and complete leakage. For the leakage scenarios of fixed hazardous sources, the accident threshold is SPL (Screening Probability Level) (1×10 ﹣7 / year), that is, when the probability of leakage scenario occurs f s Less than SPL (1×10 ﹣7 / year), this leakage scenario can be ignored.

[0088] For hazardous equipment that uses flammable fluid as storage medium, the probability of occurrence of the leakage scenario is f s Instead of the probability of an accident occurring P (P=f s ×P i ), the ignition investigation and the calculation of the ignition probability can be cancelled, which reduces the fund collection work and the large amount of on-site investigation in the general site selection stage, shortens the calculation cycle, and does not have a significant impact on the accuracy of the safety distance calculation results. Generally speaking, the accident rate of leakage probability × ignition probability, however, the ignition probability is ≤1, that is, the calculation and investigation workload of the ignition probability is relatively large. Using leakage probability instead of accident probability is more conservative and can also reduce the calculation and investigation workload. Specifically, f s Direct comparison with SPL can eliminate accident scenarios that can be ignored because the probability of an accident occurring is extremely low.

[0089] Optionally, first, multiple accident scenarios corresponding to each dangerous device in the target dangerous device set are determined. Then, based on the accident occurrence specification, the accident probability of each of the multiple accident scenarios corresponding to each dangerous device is determined. Furthermore, accident scenarios below the accident probability threshold are eliminated from the multiple accident scenarios to obtain accident scenarios corresponding to each dangerous device with an accident probability above the accident probability threshold. It should be noted that the setting of the accident probability threshold is related to the hazardous media stored in each dangerous device, and the accident probability thresholds for the accident scenarios corresponding to each dangerous device may be the same or different.

[0090] Step 106: Input the equipment data, meteorological data, and scene data of each dangerous device into a pre-configured accident scene model to obtain the safe distance between each dangerous device and the high-temperature gas-cooled reactor.

[0091] It should be noted that the accident scenario model is used to calculate the safe distance of each hazardous device. The safe distance is the minimum distance within which a hazardous device can be affected without causing serious consequences after an accident. For example, for a fixed hazardous source, the safe distance is the minimum distance within which an accident can occur without causing serious radiological consequences.

[0092] The accident scenario model models various accident scenarios for each dangerous equipment through the equipment data, meteorological data and scenario data of the dangerous equipment, and calculates the safe distance of each dangerous equipment relative to the high-temperature gas-cooled reactor in combination with the parameters recommended in the specification document.

[0093] Specifically, the safety distance can be calculated by PHAST (Process Hazard Analysis Software Tool), which can simulate accident scenarios and calculate the possible consequences of accident scenarios, so as to calculate the safety distance of each dangerous device relative to the high-temperature gas-cooled reactor. Optionally, the equipment data, meteorological data and scene data of the accident scenario of each dangerous device are input into the PHAST software, and PHAST uses the above data to perform modeling to obtain the safety distance of each dangerous device relative to the high-temperature gas-cooled reactor. It should be noted that the present application can accurately, quickly and cost-effectively calculate the safety distance between the high-temperature gas-cooled reactor and external fixed hazardous sources, minimize the distance between the plant site and heat users in the chemical park, reduce the steam transportation distance and transportation cost, and improve the market competitiveness of the high-temperature gas-cooled reactor heating.

[0094] In summary, the method for calculating the safe distance of a high-temperature gas-cooled reactor provided by the present application first determines the hazardous facility area, classifies all equipment in the hazardous facility area according to the properties of the hazardous media stored in each equipment, obtains multiple classified equipment sets, and selects the equipment with the largest hazardous media from each classified equipment set to form a target hazardous equipment set, thereby reducing the number of hazardous equipment involved in the calculation and reducing the computational workload. Then, the average meteorological conditions are determined and the most unfavorable wind direction data is filtered out for each hazardous equipment in the target equipment set. Only the most unfavorable wind direction data is used to calculate the safe distance for each hazardous equipment, further reducing the computational workload. Then, from the multiple accident scenarios corresponding to each hazardous equipment, accident scenarios that reach the accident probability threshold are filtered out, thereby reducing the accident scenarios involved in the safety distance calculation and further reducing the computational workload. Finally, the equipment data, meteorological data, and scene data of the accident scenario of each hazardous equipment are input into the preconfigured accident scenario model to obtain the safe distance of each hazardous equipment.

[0095] For example, see Figure 2 , a flow chart illustrating an example of a method for calculating the safety distance of a high-temperature gas-cooled reactor provided in this application.

[0096] First, the hazardous facility area is divided. Then, the facility with the largest medium inventory among similar hazardous facilities in the hazardous facility area is selected. Based on weather data, the most unfavorable wind direction and average weather conditions are selected as the design basis. The f of the accident scenario is selected for each hazardous facility. s Greater than SPL (10 ﹣7 ) accident scenario, for f s ≤SPL(10 ﹣7 ) accident scenarios, the probability of which is negligible. Specifically, accident scenarios for fixed hazardous sources can be categorized as small holes, medium holes, large holes, and catastrophic damage. Generally, the probability of a small hole accident scenario is lower than the SPL and can be ignored. Finally, PHAST software is used to calculate the impact range of each hazardous facility accident scenario. The minimum distance that would not cause a serious impact after an accident occurs is selected as the safety distance for the hazard setting. PHAST is a process hazard analysis tool that provides efficient risk management solutions through accident consequence modeling and quantitative risk assessment.

[0097] In summary, this embodiment greatly reduces the computational workload by dividing dangerous facility areas, screening dangerous sources, screening weather, etc., and adopting an optimized fast safety distance calculation method and a safety distance calculation method based on detailed assessment.

[0098] A method for calculating the safety distance of a high-temperature gas-cooled reactor provided in an embodiment of the present application has been described above. The following describes an apparatus for executing the method for calculating the safety distance of a high-temperature gas-cooled reactor.

[0099] See also Figure 3 , Figure 3 A schematic structural diagram of a safety distance measurement device for a high-temperature gas-cooled reactor provided in an embodiment of the present application.

[0100] like Figure 3 As shown, the device of the safety distance calculation method for a high-temperature gas-cooled reactor includes a first determination unit 10, a second determination unit 20, a first screening unit 30, a third determination unit 40, a second screening unit 50 and a calculation unit 60; wherein:

[0101] A first determining unit 10 is configured to determine a hazardous facility area from a target area based on a hazardous facility classification index;

[0102] A second determining unit 20 is used to determine all equipment in the hazardous facility area;

[0103] The first screening unit 30 is configured to classify all devices according to the properties of the hazardous media stored in each device to obtain a plurality of classified device sets; and select the device with the largest hazardous media storage capacity from each classified device set; and the target hazardous device set is formed by the devices with the largest hazardous media storage capacity in each classified device set;

[0104] The third determining unit 40 is used to determine meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data screened for each dangerous device in the target dangerous device set;

[0105] The second screening unit 50 is used to screen out accident scenarios that reach an accident probability threshold from multiple accident scenarios corresponding to each dangerous device;

[0106] The calculation unit 60 is used to input the equipment data of each dangerous equipment, meteorological data and scene data of the accident scene into the pre-configured accident scene model to obtain the safe distance between each dangerous equipment and the high-temperature gas-cooled reactor.

[0107] In one embodiment, the hazardous facility classification indicators in the first determination unit 10 include production process, storage method, and usage function, which are specifically used to:

[0108] The target area is divided into hazardous facility area and safe facility area based on the production process, storage method and usage function of the equipment in the target area.

[0109] In one embodiment, the third determining unit 40 is specifically configured to:

[0110] Determine the average meteorological conditions based on different meteorological conditions within a preset period;

[0111] Filter out the most unfavorable wind direction data corresponding to each dangerous equipment;

[0112] The most unfavorable wind direction data corresponding to each dangerous device are superimposed on the average meteorological conditions to obtain the meteorological data corresponding to each dangerous device.

[0113] In one embodiment, the second screening unit 50 is specifically configured to:

[0114] Determine the accident scenarios corresponding to each dangerous equipment and the probability of accident occurrence corresponding to the accident scenarios based on the accident occurrence specifications;

[0115] Eliminate accident scenarios where the probability of an accident occurring is lower than the accident probability threshold.

[0116] In one embodiment, the most unfavorable wind direction data in the third determining unit 40 is the wind direction data corresponding to each dangerous device, which causes the dangerous device accident to have the largest impact range.

[0117] The present application also provides a safety distance measurement device for a high temperature gas-cooled reactor. Figure 4 FIG2 shows a schematic diagram of a structure of a device suitable for implementing a safety distance calculation device for a high-temperature gas-cooled reactor in an embodiment of the present application. The device for calculating the safety distance of a high-temperature gas-cooled reactor in an embodiment of the present application may include, but is not limited to, fixed terminals such as mobile phones, laptop computers, PDAs (personal digital assistants), tablet computers, and desktop computers. Figure 4 The safety distance calculation device for a high-temperature gas-cooled reactor shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0118] like Figure 4 As shown, the high-temperature gas-cooled reactor safety distance calculation device may include a processing device (e.g., a central processing unit, graphics processing unit, etc.) 601, which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 602 or programs loaded from a storage device 608 into a random access memory (RAM) 603. When the high-temperature gas-cooled reactor safety distance calculation electronics are powered on, the RAM 603 also stores various programs and data required for the operation of the high-temperature gas-cooled reactor safety distance calculation electronics. The processing device 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0119] Typically, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 may allow the safety distance measurement electronic device of the high-temperature gas-cooled reactor to communicate with other devices wirelessly or by wire to exchange data. Although Figure 4 The safety distance calculation electronic device of the high temperature gas-cooled reactor is shown with various devices, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0120] An embodiment of the present application further provides a computer storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any of the safety distance calculation methods for high-temperature gas-cooled reactors provided in the embodiments of the present application.

[0121] A computer program product is also provided in an embodiment of the present application, including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any of the safety distance calculation methods for high-temperature gas-cooled reactors provided in the embodiments of the present application.

[0122] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a training device or a data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, training device or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a training device, a data center that includes one or more available media integrations. Available media can be magnetic media, (such as floppy disk, hard disk, tape), optical media (such as DVD) or semiconductor media (such as solid-state drive (SSD)) etc.

[0123] It should also be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, in the drawings of the device embodiments provided in this application, the connection relationship between the modules indicates that there is a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines.

[0124] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course can also be implemented by special hardware including application-specific integrated circuits, special CPUs, special memories, special components, etc. In general, all functions performed by computer programs can be easily implemented with corresponding hardware, and the specific hardware structures used to implement the same function can also be diverse, such as analog circuits, digital circuits or special circuits, etc. However, for the present application, software program implementation is a better implementation method in most cases. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer's floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a number of instructions to enable a computer device (which can be a personal computer, training equipment, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

[0125] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

Claims

1. A method for calculating the safety distance of a high-temperature gas-cooled reactor, characterized in that: include: Determine the hazardous facility area from the target area based on the hazardous facility classification index; Identify all equipment within the hazardous installation area; Classifying all devices according to the properties of the hazardous media stored in each device to obtain a plurality of classified device sets; and selecting a device with the largest hazardous media storage capacity from each classified device set; The target hazardous equipment set is formed by the equipment with the largest hazardous medium storage capacity in each classified equipment set; Determining meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data selected for each dangerous device in the target dangerous device set; Screening out accident scenarios that reach an accident probability threshold from the multiple accident scenarios corresponding to the respective dangerous equipment; The equipment data of each dangerous device, the meteorological data and the scene data of the accident scene are input into a preconfigured accident scene model to obtain a safe distance between each dangerous device and the high temperature gas-cooled reactor.

2. The method for calculating the safety distance of a high-temperature gas-cooled reactor according to claim 1, characterized in that: The hazardous facility classification indicators include production process, storage method and use function. The method of determining the hazardous facility area from the target area based on the hazardous facility classification indicators includes: The target area is divided into the dangerous facility area and the safe facility area according to the production process, storage method, and usage function of the equipment in the target area.

3. The method for calculating the safety distance of a high-temperature gas-cooled reactor according to claim 1, characterized in that: Determining the meteorological data includes: Determine the average meteorological conditions based on different meteorological conditions within a preset period; Screening out the most unfavorable wind direction data corresponding to each of the dangerous equipment; The most unfavorable wind direction data corresponding to each of the dangerous devices are respectively superimposed on the average meteorological conditions to obtain the meteorological data corresponding to each of the dangerous devices.

4. The method for calculating the safety distance of a high-temperature gas-cooled reactor according to claim 1, characterized in that: The step of screening out accident scenarios that reach an accident probability threshold from the multiple accident scenarios corresponding to the respective dangerous equipment includes: Determine the accident scenario corresponding to each of the dangerous equipment and the probability of the accident occurring corresponding to the accident scenario according to the accident occurrence specification; Eliminate accident scenarios where the probability of the accident occurring is lower than the accident occurrence probability threshold.

5. The method for calculating the safety distance of a high-temperature gas-cooled reactor according to claim 1, characterized in that: The most unfavorable wind direction data is the wind direction data corresponding to each of the dangerous equipment, which causes the impact range of the dangerous equipment accident to reach the maximum.

6. A safety distance measurement device for a high temperature gas-cooled reactor, characterized in that: include: a first determining unit, a second determining unit, a first screening unit, a third determining unit, a second screening unit, and a calculating unit; wherein: The first determining unit is configured to determine a hazardous facility area from a target area based on a hazardous facility classification index; The second determining unit is used to determine all equipment in the hazardous facility area; The first screening unit is configured to classify all devices according to the properties of the hazardous media stored in each device to obtain a plurality of classified device sets; and select the device with the largest hazardous media storage capacity from each classified device set; and form a target hazardous device set consisting of the devices with the largest hazardous media storage capacity in each classified device set; The third determining unit is configured to determine meteorological data; the meteorological data includes average meteorological conditions and the most unfavorable wind direction data selected for each dangerous device in the target dangerous device set; The second screening unit is configured to screen out accident scenarios that reach an accident probability threshold from the multiple accident scenarios corresponding to the respective dangerous devices; The calculation unit is used to input the equipment data of each dangerous device, the meteorological data and the scene data of the accident scene into a preconfigured accident scene model to obtain the safe distance between each dangerous device and the high-temperature gas-cooled reactor.

7. The safety distance calculation device for a high temperature gas-cooled reactor according to claim 6, characterized in that: The third determining unit is configured to: Determine the average meteorological conditions based on different meteorological conditions within a preset period; Screening out the most unfavorable wind direction data corresponding to each of the dangerous equipment; The most unfavorable wind direction data corresponding to each of the dangerous devices are respectively superimposed on the average meteorological conditions to obtain the meteorological data corresponding to each of the dangerous devices.

8. A safety distance measurement device for a high temperature gas-cooled reactor, characterized in that: comprising at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the safety distance calculation device of the high-temperature gas-cooled reactor can implement the safety distance calculation method of the high-temperature gas-cooled reactor according to any one of claims 1 to 5.

9. A computer storage medium, characterized in that The storage medium carries one or more computer programs, which, when executed by an electronic device, enable the electronic device to implement the safety distance calculation method for a high-temperature gas-cooled reactor as described in any one of claims 1 to 5.

10. A computer program product, characterized in that The method comprises computer-readable instructions, which, when executed on an electronic device, enable the electronic device to implement the safety distance calculation method for a high-temperature gas-cooled reactor according to any one of claims 1 to 5.

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