Radioactive process plant structure

Abstract

The invention discloses a radioactive process plant structure, which comprises a plant main body and a radioactive corridor, the internal space of the plant main body is divided into a first subarea and a second subarea by a personnel channel, and the radioactive level of the first subarea is higher than that of the second subarea; the radioactive corridor comprises a first channel, a second channel and a wire passing channel, the first channel is arranged in the first subarea, the second channel is arranged in the second subarea, the wire passing channel penetrates through the personnel channel and is communicated with the first channel and the second channel, and the wire passing channel is used for a pipeline connecting equipment in the first subarea and equipment in the second subarea to penetrate through. According to the radioactive process plant structure, the number of pipelines penetrating through a personnel channel can be reduced, the situation that radiation protection boundaries are penetrated multiple times due to scattered arrangement in a personnel activity area is avoided, and therefore potential leakage points are reduced, and the protection difficulty and the radiation pollution risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear power, and particularly relates to a structure of a radioactive process plant. BACKGROUND

[0002] In the design of a nuclear power project, a radioactive process plant is specially arranged in a main plant of a main building group of a reactor plant, and is used for arranging various types of radioactive auxiliary process systems serving a reactor loop.

[0003] In the related art, a high radiation area, a buffer area and a clean area are formed by partitioning from inside to outside according to a radiation gradient, so as to reduce the radiation influence on an external functional area. However, such partitioning design causes the radioactive corridor to inevitably cross a large area of space with the buffer area, the clean area and even a personnel activity area when connecting the high radiation areas of different partitions. The difficulty of radiation protection is increased, and the personnel activity area may be unnecessarily contaminated by radiation. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a structure of a radioactive process plant, which can reduce the number of pipelines crossing the personnel passage, avoid the radiation protection boundary being penetrated multiple times caused by the dispersed arrangement of the personnel activity area, thereby reducing the potential leakage points, and reducing the protection difficulty and the risk of radiation contamination.

[0005] In a first aspect, the present application provides a structure of a radioactive process plant, comprising: a plant main body, which is internally provided with a personnel passage, the personnel passage separates an internal space of the plant main body into a first partition and a second partition, a radioactivity level of the first partition is higher than that of the second partition; a radioactive corridor, which comprises a first passage, a second passage and a wire passage, the first passage is arranged in the first partition, the second passage is arranged in the second partition, the wire passage passes through the personnel passage and connects the first passage and the second passage, and the wire passage is used for passing pipelines connecting devices in the first partition and devices in the second partition.

[0006] According to the radioactive process plant structure of the embodiment of the present application, the interior space of the plant main body is clearly separated by the personnel passage, the first subzone is arranged with high-radioactivity equipment, the second subzone is arranged with low-radioactivity equipment, and a clear radiation gradient isolation is formed. The radioactive corridor is divided into multiple functional passages, and the first passage and the second passage are respectively used for connecting the equipment in the corresponding subzone. The pipelines connecting the high-radioactivity equipment in the first subzone are only distributed in the first passage, and only the pipelines connecting the equipment in the two subzones need to pass through the line passage to cross the personnel passage, thereby greatly reducing the number of pipelines crossing the personnel passage and avoiding the radiation protection boundary being penetrated multiple times due to the scattered arrangement in the personnel activity area, thereby reducing the potential leakage points and the protection difficulty and the radiation pollution risk.

[0007] According to the first aspect, in a possible implementation manner, the second passage is arranged along the outer wall of the second subzone.

[0008] According to the first aspect, in a possible implementation manner, one end of the personnel passage is communicated with the reactor plant, and the other end has an entrance and exit communicated with the outside. The line passage is located at one end of the personnel passage close to the reactor plant. Alternatively, the two ends of the first passage are respectively communicated with the second passage through a line passage to form a ring structure, and the two line passages are respectively located at the two ends of the line passage.

[0009] According to the first aspect, in a possible implementation manner, the line passage is at least partially arranged on the top of the personnel passage, and / or the outer side of the line passage is provided with a shielding layer.

[0010] According to the first aspect, in a possible implementation manner, the first passage is arranged apart from the personnel passage, and / or an air flow is formed in the radioactive corridor from the second passage to the first passage through the line passage.

[0011] According to the first aspect, in a possible implementation manner, the plant main body comprises a shielding wall arranged adjacent to the reactor plant, and the shielding wall is located at one side of the personnel passage. The first subzone is located at one side of the personnel passage facing the shielding wall, and the second subzone is located at one side of the personnel passage away from the shielding wall.

[0012] According to the first aspect, in a possible implementation manner, the first subzone is provided with sampling equipment and centralized purification equipment, and the second subzone is provided with waste gas treatment equipment and waste liquid treatment equipment.

[0013] According to the first aspect, in a possible implementation manner, the first subzone further has a transfer room, the transfer room is internally provided with a transfer device, the sampling device and the solid waste of the centralized purification device of the first subzone are communicated with an inlet end of the transfer device through a transmission channel, and an outlet end of the transfer device is communicated with the outside.

[0014] According to the first aspect, in a possible implementation manner, the first subzone and the second subzone each have a plurality of device rooms, in the first subzone, a radioactivity level of the device room close to the personnel channel is lower than a radioactivity level of the device room far from the personnel channel; And / or, in the second subzone, a radioactivity level of the device room close to the personnel channel is lower than a radioactivity level of the device room far from the personnel channel.

[0015] According to the first aspect, in a possible implementation manner, the second subzone is provided with a maintenance channel, the maintenance channel is communicated with the personnel channel; In the second subzone, the plurality of device rooms include a first device room and a second device room, the first device room is used for placing electric control devices, and the second device room is used for placing exhaust gas treatment devices or waste liquid treatment devices, the first device room is arranged adjacent to the personnel channel and is communicated with the personnel channel, and the second device room is communicated with the maintenance channel.

[0016] According to the first aspect, in a possible implementation manner, the factory building body includes a plurality of floors arranged in an up-down direction, each of the floors has the first subzone, the second subzone and the personnel channel, and vertical coincidence degrees of the first subzone, the second subzone and the personnel channel of different floors are greater than or equal to 95%.

[0017] According to the first aspect, in a possible implementation manner, one end of the personnel channel is communicated with a reactor building, and the other end has an entrance and exit communicated with the outside; The second subzone is provided with vertical traffic facilities, the vertical traffic facilities are used for communicating the personnel channels of adjacent two floors, and a communication position of the vertical traffic facilities and the personnel channel is located between two ends of the personnel channel and close to the entrance and exit.

[0018] According to the first aspect, in a possible implementation manner, the factory building body has a ground surface layer and an underground layer, In the ground surface layer, the personnel channel has the entrance and exit; On the first underground level, the personnel passage includes a buffer zone and a main passage. The buffer zone is connected to the reactor building through a personnel gate. One end of the main passage is connected to the buffer zone. The second area is equipped with a maintenance passage, which is connected to the buffer zone.

[0019] According to the first aspect, in one possible implementation, the radioactive process plant structure further includes a hoisting room and a boron water preparation room, wherein the hoisting room and the boron water preparation room are located on the periphery of the main body of the plant and on the side of the second partition away from the first partition.

[0020] According to the first aspect, in one possible implementation, the hoisting room, the boron water preparation room, and the main plant building are located on the same raft foundation; Alternatively, the main body of the factory building is located on the first raft foundation, and the hoisting room and the boron water preparation room are located on the second raft foundation, with the second raft foundation being independent of the first raft foundation.

[0021] Additional aspects and advantages of the invention will be set forth in sections in the description which follows, and these sections will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the main zoning of the factory building in one embodiment of the present invention; Figure 2 This is a schematic diagram of the layout of the basement of the main factory building in one embodiment of the present invention; Figure 3 This is a schematic diagram of the layout of the main surface layer of the factory building in one embodiment of the present invention; Figure 4 This is a schematic diagram of the layout of the two underground floors of the main factory building in one embodiment of the present invention.

[0023] Figure label: 100. Main factory building; 110. Personnel access; 111. Entrance / exit; 112. Buffer zone; 113. Main passage; 114. Personnel gate; 120. First zone; 121. Transfer room; 122. Transfer equipment; 130. Second zone; 131. Maintenance passage; 132. First equipment room; 133. Second equipment room; 134. Vertical transportation facilities; 140. Shielding wall; 200. Radial Corridor; 210. First Passageway; 220. Second Passageway; 230. Crossing Passageway; 300. Hoisting Room; 400. Boron water preparation room. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0028] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] In existing technologies, the main reactor building complex in nuclear power plant engineering design typically employs a radiation gradient-based zoning approach, creating high-radiation zones, buffer zones, and clean zones. Under this traditional layout, radiation corridors connecting different radiation zones must traverse buffer zones, clean zones, and personnel activity areas, resulting in blurred radiation protection boundaries, scattered pipeline layouts, and the risk of radiation leakage.

[0030] To address the aforementioned problems, this application proposes a structure for a radioactive process plant. In some embodiments, such as Figure 1 andFigure 2 As shown, the process structure of the radioactive facility includes a main building 100 and a radioactive corridor 200. The main building 100 has an internal personnel passage 110 that divides the interior space of the main building 100 into a first zone 120 and a second zone 130 with different radioactivity levels. The radioactivity level of the first zone 120 is higher than that of the second zone 130. The radioactive corridor 200 includes a first passage 210 located in the first zone 120, a second passage 220 located in the second zone 130, and a wiring passage 230 that passes through the personnel passage 110 and connects the first passage 210 and the second passage 220. The wiring passage 230 is used for pipelines connecting equipment in the first zone 120 and equipment in the second zone 130.

[0031] In this embodiment, the personnel passage 110 refers to the path for personnel passage located inside the main plant 100, and can specifically adopt a corridor structure with radiation shielding function. The internal space of the main plant 100 is clearly divided by the personnel passage 110. The first zone 120 is centrally located for high-radioactive equipment, and the second zone 130 is located for low-radioactive equipment, forming a clear radiation gradient isolation. The radioactive corridor 200 is divided into multiple functional channels, with the first channel 210 and the second channel 220 serving the equipment connection needs of the corresponding zones. Specifically, pipelines connecting high-radioactive equipment in the first zone 120 are only distributed within the first channel 210. Only pipelines connecting equipment between the two zones need to cross the personnel passage 110 via the cable crossing channel 230, thereby significantly reducing the number of pipelines crossing the personnel passage 110 and avoiding multiple penetrations of the radiation protection boundary caused by dispersed placement in personnel activity areas, thus reducing potential leakage points, lowering the difficulty of protection, and reducing the risk of radiation contamination.

[0032] The personnel passage 110 has one end connected to the reactor building and the other end connected to the outside via an entrance / exit 111. The personnel passage 110 is a passageway for personnel connecting the reactor building to the outside. It can be implemented using a corridor structure with shielding to separate high-radiation areas from low-radiation areas.

[0033] The layout of the radioactive corridor 200 is described in detail below.

[0034] In some embodiments, the second channel 220 is arranged along the outer wall of the second partition 130. Since the second partition 130 is an area with a low level of radioactivity, the arrangement of the second channel 220 along the outer wall of the second partition 130 allows pipelines connecting low-radioactivity equipment to be laid without passing through the core area where personnel frequently move, and can be directly laid using the space near the edge of the second partition 130. Furthermore, the outer wall structure naturally forms a shielding layer, and the radiation generated during pipeline transmission is confined to the inside of the outer wall.

[0035] The outer wall of the second section 130 refers to the wall structure that forms the outer boundary of the main body 100 of the factory building and has radiation shielding function. Specifically, it can be implemented using heavy concrete walls with a thickness of 800 mm to 1200 mm. The outer wall not only bears the building load but also prevents the leakage of radioactive materials. The second passage 220 can be a trench or metal pipe structure formed by concrete pouring. The interior of the second passage 220 is designed to allow only pipelines to pass through and restrict personnel access.

[0036] The penetration location of the cable passage 230 was determined through radiation simulation calculations, selecting the section within the personnel passage 110 with the optimal radiation shielding effect. During operation, the personnel passage 110 acts as a radiation barrier, continuously blocking radiation transmission between the two zones, while the centralized conduit design of the cable passage 230 ensures that the range of pipeline radiation impact is controllable.

[0037] In the first example, the location of the cable passage 230 can be designed at the end of the personnel passage 110 near the reactor building, allowing the pipelines to pass through the boundary between the high-radiation and low-radiation areas, thereby reducing the pipeline length in the personnel activity area. Furthermore, fewer personnel enter the reactor building area through the personnel passage 110. In other words, this example further enhances the protection effect by placing the cable passage 230 in an area with high radioactivity levels and low personnel traffic.

[0038] In the second example, the two ends of the first channel 210 are connected to the second channel 220 through a wiring channel 230 to form a ring structure, and the two wiring channels 230 are located at opposite ends of the wiring channel 230. This example reduces the pipeline extension length by setting wiring channels 230 at both ends of the personnel channel 110. Specifically, equipment located on the left side of the first partition 120 and the left side of the second partition 130 can be routed through the wiring channel 230 near the reactor building side, while equipment located on the right side of the first partition 120 and the right side of the second partition 130 can be routed through the wiring channel 230 near the inlet / outlet 111. Setting two wiring channels 230 can also disperse the concentration of radiation hotspot areas.

[0039] Furthermore, at least a portion of the structure of the cable passage 230 is located at the top of the personnel passage 110. The cable passage 230 being located at the top of the personnel passage 110 means that the pipeline connecting the high radiation area and the low radiation area is arranged in the space above the personnel activity area. Specifically, a steel structure or a concrete structure can be erected below the top plate of the passage to reduce the direct contact between the pipeline and the personnel activity plane through vertical spatial isolation.

[0040] A shielding layer can also be installed on the outside of the cable passage 230. The shielding layer refers to the radiation protection structure wrapped around the cable passage 230. Specifically, it can be made of lead plate, boron-containing polyethylene or concrete to form a closed shell, which can suppress the leakage of radioactive materials through the absorption and blocking effect of the material.

[0041] When pipelines need to cross personnel passage 110, a pipeline corridor 230 should be preferentially constructed at the top of the passage. This utilizes the spatial layering characteristic along the building's height to create vertical isolation between the pipelines and the personnel activity area. For example, a 1.2-meter-wide pipe gallery can be constructed 0.5 meters below the top slab of personnel passage 110, with supports securing the pipelines and maintaining a clearance of at least 2.3 meters from the passage area below. For pipeline corridors 230 that must pass through densely populated areas, a 15-centimeter-thick lead-steel composite shielding layer can be added to the outside of the corridor, or a 30-centimeter-thick protective wall can be constructed using heavy aggregate concrete. These two techniques can be implemented individually or in combination to form a dual protection system; for example, a 10-centimeter-thick lead plate can be wrapped around the outside of the top pipe gallery before being covered with a 20-centimeter-thick concrete layer.

[0042] This embodiment employs a vertically layered design to physically isolate pipelines from personnel activity areas. Simultaneously, the shielding layer directly blocks radiation propagation paths, effectively reducing the risk of radiation leakage when pipelines cross personnel passage 110 and preventing direct intersections between high-radiation areas and personnel activity planes. The top-mounted arrangement also reduces the space occupied by the radioactive corridor 200 within the main plant structure 100. The shielding layer structure enhances radiation protection capabilities in localized areas, thereby improving the safety and reliability of radioactive material management.

[0043] In some embodiments, the first passage 210 and the personnel passage 110 are spaced apart. The spaced-apart arrangement of the first passage 210 and the personnel passage 110 means that a certain distance is maintained between the first passage 210 and the personnel passage 110 in the planar layout. The space between the first passage 210 and the personnel passage 110 can be provided with a wall or shielding layer to form a solid structure, so that the space forms a radiation shielding buffer zone to block radioactive materials from diffusing into the personnel activity area through the air.

[0044] Within the radioactive corridor 200, an airflow is formed from the second channel 220 through the linear channel 230 to the first channel 210. This airflow can be controlled by the pressure gradient to form a directional flow, which can be achieved by using a fan system combined with a ventilation duct layout. The airflow direction is from the low radiation area to the high radiation area, ensuring that radioactive particles are transported unidirectionally along a preset path.

[0045] Specifically, in the radioactive corridor 200, when a gap is set between the first passage 210 and the personnel passage 110, for example, the gap distance can be 3-5 meters. This gap space can be filled with a concrete shielding structure to physically isolate the high-radioactivity area from the personnel passage area. Simultaneously, a ventilation system is installed within the radioactive corridor 200, for example, with an air inlet in the second passage 220 and an exhaust outlet in the first passage 210. Pressure differential control is used to create an airflow path from the second passage 220 to the wiring passage 230, and finally back to the first passage 210. The airflow direction within the radioactive corridor 200 is opposite to the natural diffusion direction of radioactive materials, forcibly confining any potentially leaking radioactive particles within the corridor, preventing them from diffusing back into low-radiation areas through pipe gaps or equipment interfaces.

[0046] Regarding the first zone 120 and the second zone 130, the equipment with high levels of radioactivity is concentrated in the first zone 120 in this application.

[0047] Specifically, the main body of the plant 100 includes a shielding wall 140 adjacent to the reactor building. The shielding wall 140 is located on one side of the personnel passage 110. The first zone 120 is located on the side of the personnel passage 110 facing the shielding wall 140, and the second zone 130 is located on the side of the personnel passage 110 away from the shielding wall 140.

[0048] The shielding wall 140 refers to the radiation protection structure that is in direct contact with the reactor building. Specifically, it can be implemented using a concrete wall with a thickness of 1.5-2.5 meters. The function of the shielding wall 140 is to block the initial radiation generated by the reactor building. The spatial division of the first zone 120 and the second zone 130 refers to the physical separation through personnel passageways 110, concentrating high-radiation equipment in the area close to the reactor building, while placing low-radiation equipment in the area farther away from the reactor building.

[0049] Specifically, sampling equipment and centralized purification equipment are installed in Zone 120. The sampling equipment refers to the device used to collect samples of radioactive media, which can be implemented using a closed sampler operated by a robotic arm, thereby reducing the number of personnel handling high-radioactive samples. The centralized purification equipment refers to the system for preliminary treatment of high-radioactive materials, which can be a structure combining ion exchange columns and filtration devices, used to perform primary separation of pollutants at the radiation source.

[0050] Waste gas treatment equipment and waste liquid treatment equipment are installed in the second zone 130. The waste gas treatment equipment is mainly for waste gases containing radioactive aerosols, iodine isotopes, and inert gases, achieving purification and discharge through filtration, adsorption, and dilution. The waste liquid treatment equipment refers to the device for treating radioactive liquid waste. Specifically, it can adopt a process unit that combines multi-stage sedimentation tanks and evaporators to reduce the radioactive concentration of the waste liquid through staged treatment.

[0051] For example, in the high-radioactivity zone, the first section 120 uses on-site sampling equipment, allowing reactor loop samples to be collected and transported directly to centralized purification equipment for primary treatment without long-distance transport, thus preventing the spread of radioactive materials to low-radiation areas during transport. The processed intermediate products are transported through closed pipelines to the waste liquid treatment equipment in the second section 130 for further treatment before discharge or recycling, while the concentrated waste liquid in the first section 120 is solidified and packaged. This layout, by physically isolating the high- and low-radioactivity treatment stages, maintains the continuity of the process flow and utilizes the zoned radiation gradients to form a natural protective barrier.

[0052] Furthermore, the first zone 120 is equipped with a transfer chamber 121, and a transfer device 122 is installed inside the transfer chamber 121. The solid waste from the sampling equipment and centralized purification equipment in the first zone 120 is connected to the inlet of the transfer device 122 through a transmission channel, and the outlet of the transfer device 122 is connected to the outside. The transfer room 121 refers to an independent, enclosed space located within the first zone 120, which has a higher radioactivity level. It can be constructed with reinforced concrete walls and a lead shielding layer to isolate the radioactive material transfer operation area. The transfer equipment 122 refers to a device for automated transfer of solid waste, which can employ a pneumatic conveying system or a robotic arm transport mechanism, remotely controlling waste loading and transportation. The transmission channel refers to a closed transport path connecting the sampling equipment, centralized purification equipment, and transfer equipment 122. It can utilize a stainless steel pipe structure with embedded shielding material to ensure no leakage of radioactive materials during transport. The outlet connection to the outside refers to a dedicated discharge port at the end of transfer equipment 122, which can connect to an external waste storage area via an underground transfer tunnel or a shielded gate, preventing the waste transport path from intersecting with personnel activity areas.

[0053] During the operation of the radioactive process plant, radioactive samples collected by the sampling equipment in Zone 120 and solid waste generated by the centralized purification equipment are directly transported through a sealed transmission channel to the inlet of transfer equipment 122 in transfer room 121. After receiving and temporarily storing the waste in the enclosed space, transfer equipment 122 transfers the waste to the outlet via an automated transportation method, and then discharges it to external treatment facilities through a dedicated channel. The entire transfer process does not require personnel to enter the high-radiation area, and the movement paths of all radioactive materials are physically isolated.

[0054] In some embodiments, both the first partition 120 and the second partition 130 have multiple equipment rooms. In the first partition 120, the equipment rooms closer to the personnel passage 110 have lower radioactivity levels than the equipment rooms farther from the personnel passage 110. In the first partition 120, equipment rooms with lower radioactivity levels are located closer to the personnel passage 110, for example, for housing low-radiation instrument control cabinets or data transmission equipment; while high-radiation equipment rooms are located farther from the personnel passage 110, for example, for housing radioactive waste treatment devices or high-radiation sampling equipment.

[0055] Within the second zone 130, the radioactivity level of the equipment room near the personnel passage 110 is lower than that of the equipment room far from the personnel passage 110. In the second zone 130, electrical control cabinets or ventilation equipment can be installed in the area near the personnel passage 110, while waste gas treatment devices or waste liquid storage tanks are arranged in the areas far away.

[0056] By establishing a radioactive gradient within each zone, the radiation intensity increases with the distance from personnel passage 110, avoiding direct proximity of high-radiation areas to personnel activity areas. This maximizes the spatial distance between high-radiation equipment and personnel activity areas, reduces radiation interference between equipment rooms, and lowers the risk of radiation exposure.

[0057] In some embodiments, the second partition 130 is provided with a maintenance passage 131, which is connected to the personnel passage 110. In the second partition 130, a plurality of equipment rooms include a first equipment room 132 and a second equipment room 133. The first equipment room 132 is used to house electrical control equipment, and the second equipment room 133 is used to house waste gas treatment equipment or waste liquid treatment equipment. The first equipment room 132 is arranged adjacent to and connected to the personnel passage 110, and the second equipment room 133 is connected to the maintenance passage 131.

[0058] Maintenance passage 131 refers to a dedicated passage within the second zone 130 for equipment maintenance. This can be achieved by reserving a corridor space 1.5 to 2 meters wide between the inner wall of the second zone 130 and the equipment room. A shielded door can be installed at its connection with personnel passage 110. This passage isolates the maintenance path for high-radioactive equipment, preventing intersections with low-radioactive areas. The first equipment room 132 is a room for accommodating non-radioactive equipment such as electrical control cabinets and instrument panels. It can be a separate compartment adjacent to personnel passage 110, with walls constructed of ordinary concrete. The proximity of the second equipment room 132 to personnel passage 110 shortens the contact distance between operators and low-radioactive equipment. The second equipment room 133 is a closed space for handling radioactive waste gas or liquid. It can employ a wall structure with a lead shielding layer and connect to the wiring passage 230 via pipes. The connection between the second equipment room 133 and maintenance passage 131 allows maintenance personnel to directly enter the high-radioactive work area without traversing low-radioactive areas.

[0059] Specifically, within the second zone 130, electrical control equipment is centrally located in the first equipment room 132, near the personnel passage 110. Operators can quickly complete daily monitoring and equipment debugging via the main passage 113. Waste gas treatment equipment or waste liquid treatment equipment is independently located in the second equipment room 133, and maintenance personnel must enter this area via a dedicated maintenance passage 131 to perform maintenance tasks. The connection between the maintenance passage 131 and the personnel passage 110 is located at the edge of the second zone 130, forming a work path physically isolated from the main passage 113. Thus, maintenance activities for high-radioactivity equipment are confined to a specific area, preventing the spread of radioactive materials through personnel activity areas.

[0060] In some embodiments, such as Figures 1 to 4 As shown, the main body of the factory building 100 includes multiple floors arranged in the vertical direction. Each floor has a first section 120, a second section 130 and a personnel passage 110, and the vertical overlap of the first section 120, the second section 130 and the personnel passage 110 of different floors is greater than or equal to 95%.

[0061] Vertical overlap refers to the degree of alignment between corresponding functional zones on different floors in the vertical projection direction. This can be achieved through an axial positioning system in building structural design, such as using a unified column grid coordinate system for spatial division. By limiting vertical overlap, the radiation protection boundaries of different floors are ensured to continuously cover the area vertically, blocking the path of radioactive material diffusion through misaligned spaces. Furthermore, maintaining spatial consistency in personnel movement within multi-story structures reduces the probability of secondary contamination during cross-floor operations, and the vertical connectivity of equipment maintenance passages improves maintenance efficiency.

[0062] Each floor has a first zone 120, a second zone 130, and a personnel passage 110, meaning that each floor is independently configured with a complete radiation gradient zoning architecture. This can be achieved using a standardized modular layout design, such as defining functional blocks of fixed dimensions in the building plan. Limiting the vertical overlap of zones between floors facilitates the formation of a unified protection system throughout the entire floor, allowing for vertically integrated pipeline layout and ventilation control.

[0063] Based on the above multi-floor scheme, a vertical transportation facility 134 can be installed in the second zone 130. The vertical transportation facility 134 is used to connect the personnel passages 110 of two adjacent floors. The connection between the vertical transportation facility 134 and the personnel passage 110 is located between the two ends of the personnel passage 110, near the entrance / exit 111. The vertical transportation facility 134 refers to the structure used to realize the passage of people between different floors. Specifically, it can be implemented by stairs or elevators. Its installation position is close to the entrance / exit 111 end of the personnel passage 110, so that the personnel flow path is concentrated in the low-radiation area.

[0064] Vertical transportation facility 134 is located within the second zone 130 and connects to the middle and rear section of personnel passage 110, allowing personnel flow to avoid the high-radiation area near the reactor building. After entering from the external entrance 111, personnel can directly reach the personnel passage 110 of the target floor via vertical transportation facility 134, shortening the personnel entry and exit path, improving traffic efficiency, and avoiding staff passing through the first zone 120.

[0065] The main factory building 100 has a ground floor, which is the ground floor in daily life. On the ground floor, the personnel passage 110 has entrances and exits 111.

[0066] The main plant 100 has a basement level. On the basement level, the personnel passage 110 includes a buffer zone 112 and a main passage 113. The buffer zone 112 is connected to the reactor building through a personnel gate 114. One end of the main passage 113 is connected to the buffer zone 112. The second zone is equipped with a maintenance passage 131, which is connected to the buffer zone 112.

[0067] Buffer zone 112 refers to the enclosed space located at the entrance of personnel passage 110 on the first basement level. It can be implemented using a compartment equipped with an airtight door and radiation monitoring equipment, used for radiation detection and decontamination of personnel entering the reactor building. Main passage 113 refers to the personnel access path connecting buffer zone 112 to the outside of the reactor building, with physical isolation doors controlling the direction of personnel flow. Main passage 113 is spaced apart from shielding wall 140, specifically maintaining a 3-5 meter physical isolation space between them to form a radiation attenuation buffer zone. Maintenance passage 131 refers to a dedicated maintenance path located in the second zone, which can be implemented as an enclosed corridor independent of main passage 113. Maintenance personnel can enter relevant areas of the reactor building without passing through main passage 113 by installing maintenance gates directly connected to buffer zone 112.

[0068] Specifically, in the layout of the underground level, buffer zone 112 is physically isolated from the reactor building via personnel gate 114. All personnel entering the reactor building must pass through buffer zone 112 to complete radiation testing and don protective equipment. Maintenance passage 131 is independently located in the second zone and directly connected to buffer zone 112. Maintenance personnel can directly access the reactor building equipment area for maintenance work through this passage, avoiding intersections with the regular personnel flow in the main passage 113. This physical separation of personnel access paths from maintenance paths effectively blocks potential pathways for the spread of radioactive materials through personnel activity.

[0069] In some embodiments, the radioactive process building structure further includes a hoisting room 300 and a boron water preparation room 400, which are located on the periphery of the main building 100 and on the side of the second partition 130 opposite to the first partition 120.

[0070] The hoisting room 300 is an independent space for loading and unloading radioactive equipment. It can be implemented using a steel frame structure with detachable shielded doors. Located outside the second zone 130, the hoisting room 300 utilizes the natural shielding effect of the low-radioactivity area to reduce the risk of radiation leakage during operations. The boron water preparation room 400 is a functional area housing a boric acid solution preparation system. It can be separated into an independent operating room by concrete walls. The perimeter of the boron water preparation room 400 uses physical isolation to prevent the spread of radioactive materials to uncontrolled areas. The side of the second zone 130 away from the first zone 120 refers to the outer side of the low-radioactivity zone in the main plant 100, far from high-radioactivity areas. This is achieved by defining the spatial boundary using radiation monitoring data. This location avoids cross-migration of radioactive materials and forms a buffer zone between functional zones.

[0071] Furthermore, maintaining a physical connection between the hoisting room 300 and the main plant 100 ensures the shortest possible equipment transportation path. When the boron water preparation room 400 is located in the same orientation, its process pipelines can be directly connected to the main system along the edge of the second partition 130, avoiding the risk of contamination from traversing high-radioactivity areas. The peripheral layout of the two functional rooms creates a transitional zone with decreasing radiation gradient between the main plant 100 and external auxiliary facilities, satisfying both process connection requirements and maximizing space utilization.

[0072] In some specific embodiments, the hoisting room 300 may be equipped with a movable shielding cover to cover the hoisting opening, and the boron water preparation room 400 may be equipped with a double-sealed door connected to the main plant 100. A radiation monitoring sensor array may be installed between the main plant 100 and the surrounding functional rooms to detect the radiation level of the boundary area in real time.

[0073] In practical applications, the hoisting room 300, the boron water preparation room 400 and the main plant 100 can be set on the same raft foundation, or the hoisting room 300 and the boron water preparation room 400 can be set on a raft foundation independent of the main plant 100.

[0074] A raft foundation refers to a foundation form in which a large area of ​​reinforced concrete slabs is used to cover the bottom area of ​​a building. Specifically, it can be achieved by integral casting or segmented assembly, and is used to evenly distribute the upper load to the foundation.

[0075] When the hoisting room 300, the boron water preparation room 400 and the main plant 100 adopt the same raft foundation, the overall foundation structure forms a unified force system through rigid connection, which can coordinate the settlement deformation of different areas and avoid stress concentration of equipment pipelines due to foundation displacement.

[0076] When the main body of the plant 100 is set on the first raft foundation, and the hoisting room 300 and the boron water preparation room 400 are set on the second raft foundation, the first raft foundation and the second raft foundation are physically isolated to form an independent support system, which can prevent the mechanical vibration generated by the operation of the main body of the plant 100 from being transmitted to the hoisting room 300 and the boron water preparation room 400 through the foundation, thereby ensuring the operating accuracy of the auxiliary equipment.

[0077] It should be noted that the connection in this application is not a direct connection, but rather a connection achieved by setting up a shielded door or gate, which is normally closed. When staff need to pass through, the shielded door or gate is opened to achieve the connection.

[0078] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A structure for a radioactive process plant, characterized in that, include: The main body of the factory building has an internal personnel passage that divides the internal space of the main body of the factory building into a first zone and a second zone. The radioactivity level of the first zone is higher than that of the second zone. The radioactive corridor includes a first passage, a second passage, and a cable passage. The first passage is located in the first zone, the second passage is located in the second zone, and the cable passage passes through the personnel passage and connects the first passage and the second passage. The cable passage is used for pipelines connecting equipment in the first zone and equipment in the second zone to pass through.

2. The structure of the radioactive process plant according to claim 1, characterized in that, The second channel is provided along the outer wall of the second zone.

3. The structure of the radioactive process plant according to claim 2, characterized in that, One end of the personnel passage is connected to the reactor building, and the other end has an entrance / exit that connects to the outside. The crossing passage is located at one end of the personnel passage near the reactor building; Alternatively, the two ends of the first channel are respectively connected to the second channel through a wire-passing channel to form a ring structure, and the two wire-passing channels are respectively located at the two ends of the wire-passing channel.

4. The structure of the radioactive process plant according to claim 1, characterized in that, At least a portion of the cable passage is located at the top of the personnel passage, and / or, a shielding layer is provided on the outside of the cable passage.

5. The structure of the radioactive process plant according to claim 1, characterized in that, The first passage is spaced apart from the personnel passage; and / or, an airflow is formed in the radial corridor from the second passage through the crossing passage to the first passage.

6. The structure of the radioactive process plant according to claim 1, characterized in that, The main body of the plant includes a shielding wall adjacent to the reactor building, and the shielding wall is located on one side of the personnel passage. The first partition is located on the side of the personnel passage facing the shielding wall, and the second partition is located on the side of the personnel passage away from the shielding wall.

7. The structure of the radioactive process plant according to claim 6, characterized in that, The first zone is equipped with sampling equipment and centralized purification equipment. The second zone is equipped with waste gas treatment equipment and waste liquid treatment equipment.

8. The structure of the radioactive process plant according to claim 7, characterized in that, The first partition also has a transfer room, which is equipped with transfer equipment. The solid waste from the sampling equipment and the centralized purification equipment is connected to the inlet of the transfer equipment through a transmission channel, and the outlet of the transfer equipment is connected to the outside.

9. The structure of the radioactive process plant according to claim 1, characterized in that, Both the first and second zones have multiple equipment rooms. In the first zone, the radioactivity level of the equipment room closer to the personnel passage is lower than the radioactivity level of the equipment room farther away from the personnel passage. And / or, within the second zone, the radioactivity level of the equipment room closer to the personnel passage is lower than the radioactivity level of the equipment room farther from the personnel passage.

10. The structure of the radioactive process plant according to claim 9, characterized in that, The second section is equipped with a maintenance passage, which is connected to the personnel passage; In the second partition, the plurality of equipment rooms include a first equipment room and a second equipment room. The first equipment room is used to house electrical control equipment, and the second equipment room is used to house waste gas treatment equipment or waste liquid treatment equipment. The first equipment room is located adjacent to and connected to the personnel passage, and the second equipment room is connected to the maintenance passage.

11. The structure of the radioactive process plant according to claim 1, characterized in that, The main body of the factory building includes multiple floors arranged in a vertical direction. Each floor has a first partition, a second partition, and a personnel passage. The vertical overlap of the first partition, the second partition, and the personnel passage on different floors is greater than or equal to 95%.

12. The structure of the radioactive process plant according to claim 11, characterized in that, One end of the personnel passage is connected to the reactor building, and the other end has an entrance / exit that connects to the outside. The second zone is equipped with vertical transportation facilities, which are used to connect the personnel passages of two adjacent floors. The connection between the vertical transportation facilities and the personnel passages is located between the two ends of the personnel passages, near the entrances and exits.

13. The structure of the radioactive process plant according to claim 1, characterized in that, The main body of the factory building has a surface layer and a basement layer. At the surface layer, the personnel passage has the entrance and exit; On the first underground level, the personnel passage includes a buffer zone and a main passage. The buffer zone is connected to the reactor building through a personnel gate. One end of the main passage is connected to the buffer zone. The second area is equipped with a maintenance passage, which is connected to the buffer zone.

14. The structure of the radioactive process plant according to claim 1, characterized in that, The structure of the radioactive process plant also includes a hoisting room and a boron water preparation room, which are located on the periphery of the main body of the plant and on the side of the second partition away from the first partition.

15. The structure of the radioactive process plant according to claim 14, characterized in that, The hoisting room, the boron water preparation room, and the main plant building are located on the same raft foundation; Alternatively, the main body of the factory building is located on the first raft foundation, and the hoisting room and the boron water preparation room are located on the second raft foundation, with the second raft foundation being independent of the first raft foundation.

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