Nuclear power plant safety building and method of arranging the same

Abstract

The application provides a nuclear power plant safety building and a layout method thereof. The layout method comprises the following steps: dividing the space of the safety building into a mechanical equipment area and an electrical and instrument equipment area located above the mechanical equipment area, dividing the planar area of the mechanical equipment area into a dedicated safety equipment area arranged close to a reactor building and an auxiliary equipment area arranged away from the reactor building, arranging the mechanical equipment of a dedicated safety system in the dedicated safety equipment area, arranging electrical equipment for providing power supply for the dedicated safety system, instrument control equipment for controlling the dedicated safety system, and master control equipment for monitoring the instrument control equipment in the electrical and instrument equipment area, and arranging mechanical equipment for assisting in realizing the function of the safety building in the auxiliary equipment area. The application can simplify the building size and improve the economy of the nuclear island under the premise of meeting the safety requirements of the third generation nuclear power plant.

Description

Technical Field

[0001] This invention relates to the nuclear industry, specifically to a nuclear power plant safety building and its layout method. Background Technology

[0002] In the nuclear power field, the safety building of a nuclear power plant is mainly used to house dedicated electrically driven (active) safety facilities, such as the containment spray system, safety injection system, reactor cavity water injection system, and other equipment and piping, as well as the electrical system equipment that provides power to them, the instrumentation and control system equipment that automatically controls them, and the ventilation system facilities of the safety building. Depending on the functional zoning and overall layout design of the nuclear island building system, the safety building may also house other auxiliary system items.

[0003] As safety requirements in the nuclear power sector become increasingly stringent, countries worldwide are not only extending the lifespan of existing second-generation units and constructing additional second-generation+ units, but also prioritizing the adoption of safer and more advanced third-generation nuclear power units in their new round of nuclear power construction. Third-generation units place new demands on the overall layout of equipment within nuclear power plant buildings. However, existing nuclear power plant safety building designs lack rationality, resulting in low space utilization, large building sizes, and poor economic efficiency. Furthermore, the functions of existing nuclear power plant safety buildings are relatively limited and cannot adequately adapt to the overall layout of the nuclear island. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a safe nuclear power plant building and its layout method, which can reduce the size of the building and improve the economic efficiency of the nuclear island while meeting the safety requirements of third-generation nuclear power plants.

[0005] The technical solution adopted to solve the technical problem of this invention is:

[0006] This invention provides a method for arranging a safety building in a nuclear power plant, comprising:

[0007] The safety building space is divided into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area is further divided into a dedicated safety equipment area located close to the reactor building and an auxiliary equipment area located further away from the reactor building.

[0008] The mechanical equipment for the dedicated safety system is arranged in the dedicated safety equipment area. The electrical equipment that provides power to the dedicated safety system, the instrumentation and control equipment that controls the dedicated safety system, and the main control equipment that monitors the instrumentation and control equipment are arranged in the instrumentation and control equipment area. The mechanical equipment that helps to realize the functions of the safe workshop is arranged in the auxiliary equipment area.

[0009] Optionally, an L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The L-shaped corridor opens towards the reactor building and includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first and second directions are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The mechanical equipment of the dedicated safety system in column A is arranged in the first dedicated safety equipment zone, and the mechanical equipment of the dedicated safety system in column B is arranged in the second dedicated safety equipment zone.

[0010] Optionally, the mechanical equipment of the dedicated safety system includes safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment.

[0011] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction.

[0012] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

[0013] Optionally, the auxiliary mechanical equipment for achieving the functions of the safe workshop includes auxiliary water supply equipment, equipment cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe workshop cooling equipment.

[0014] The auxiliary water supply equipment and the chilled water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area between the auxiliary water supply equipment and the chilled water equipment within the auxiliary equipment area.

[0015] The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

[0016] Optionally, the space of the machinery and equipment area can be divided into three levels, from bottom to top: the second basement level, the first basement level, and the first floor above ground.

[0017] The safety injection pumps for the safety injection equipment, the cooling pumps for the reactor cavity water injection cooling equipment, the safety injection pumps for the low-pressure safety injection equipment, the safety injection pumps for the medium-pressure safety injection equipment, the injection tank and injection pump for the emergency boron injection equipment, the electric pumps for the auxiliary water supply equipment, the ventilation equipment for mechanical equipment, and the heat exchangers for the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The remaining area on the second basement level of the auxiliary equipment area is divided into multiple pipe rooms to accommodate the connecting pipes for the relevant mechanical equipment.

[0018] The motors for the safety injection pumps, the cooling pumps for the reactor cavity water injection cooling system, the safety injection pumps for the low-pressure safety injection system, the sealed water tanks for the auxiliary water supply system, and the chilled water pumps for the safety building cooling system are all located on the first basement level. Other areas on the first basement level of the auxiliary equipment area are divided into multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables for the relevant equipment are respectively arranged.

[0019] The chilled water units, control rod-related equipment, battery ventilation equipment, cooling pumps and ventilation equipment of the safety plant cooling equipment are arranged on the ground floor of the auxiliary equipment area. The other areas on the ground floor of the auxiliary equipment area are divided into multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged on the ground floor of the dedicated safety equipment area.

[0020] Optionally, the space of the electrical equipment area can be divided into a main electrical equipment area and a main control area located above the main electrical equipment area.

[0021] The main electrical and instrumentation equipment area is divided into multiple electrical and instrumentation zones, each corresponding to one of the multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is then installed within its corresponding electrical and instrumentation zone.

[0022] The main control equipment that monitors the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

[0023] Optionally, the space of the main electrical equipment area is divided into three floors, from top to bottom: the second floor, the third floor, and the fourth floor.

[0024] The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment.

[0025] The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone. The power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone. The batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

[0026] Optionally, the space of the main control area can be divided into two floors, namely the fifth floor above ground and the sixth floor above ground.

[0027] The five-story floor plan is divided into a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room.

[0028] The six floors above ground house the fresh air chamber, pressurized air supply room, equipment cooling water system fluctuation box, and main steam isolation valve hoisting room.

[0029] The fourth floor plan is divided into a main water supply pipeline area for the installation of the main water supply pipeline. The fifth floor plan is divided into a main steam pipeline area corresponding to the main water supply pipeline area for the installation of the main steam pipeline. The sixth floor plan is divided into a hoisting area corresponding to the main water supply pipeline area for the hoisting of the main water supply pipeline.

[0030] This invention also provides a nuclear power plant safety building.

[0031] The safety building includes a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area comprises a dedicated safety equipment area located near the reactor building and an auxiliary equipment area located away from the reactor building.

[0032] The dedicated safety equipment area contains mechanical equipment for the dedicated safety system. The electrical and instrumentation equipment area contains electrical equipment that provides power to the dedicated safety system, instrumentation and control equipment that controls the dedicated safety system, and main control equipment that monitors the instrumentation and control equipment. The auxiliary equipment area contains mechanical equipment that assists in realizing the functions of the safe workshop.

[0033] Optionally, an L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The L-shaped corridor opens towards the reactor building and includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first and second directions are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The first dedicated safety equipment zone is equipped with A columns of mechanical equipment for the dedicated safety system, and the second dedicated safety equipment zone is equipped with B columns of mechanical equipment for the dedicated safety system.

[0034] Optionally, the mechanical equipment of the dedicated safety system includes safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment.

[0035] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction.

[0036] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

[0037] Optionally, the auxiliary mechanical equipment for achieving the functions of the safe workshop includes auxiliary water supply equipment, equipment cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe workshop cooling equipment.

[0038] The auxiliary water supply equipment and the cooling water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area of ​​the auxiliary equipment area between the auxiliary water supply equipment and the cooling water equipment.

[0039] The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

[0040] Optionally, the mechanical equipment area is divided into three levels, from bottom to top: a second basement level, a first basement level, and a first floor above ground.

[0041] The safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the safety injection pumps of the medium-pressure safety injection equipment, the injection tank and injection pump of the emergency boron injection equipment, the electric pumps of the auxiliary water supply equipment, the ventilation equipment of the mechanical equipment, and the heat exchangers of the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The second basement level of the auxiliary equipment area also includes multiple pipe rooms for arranging the connecting pipes of the relevant mechanical equipment.

[0042] The motors for the safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the sealed water tanks of the auxiliary water supply equipment, and the chilled water pumps of the safety building cooling equipment are all located in the basement. The basement of the auxiliary equipment area also includes multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables of the relevant equipment are arranged.

[0043] The chilled water unit, control rod related equipment, battery ventilation equipment, cooling pump and ventilation equipment of the safety plant cooling equipment are arranged in the ground floor of the auxiliary equipment area. The ground floor of the auxiliary equipment area also includes multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of the mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged in the ground floor of the dedicated safety equipment area.

[0044] Optionally, the space of the electrical equipment area is divided into a main electrical equipment area and a main control area located above the main electrical equipment area.

[0045] The main electrical and instrumentation equipment area comprises multiple electrical and instrumentation zones corresponding to multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is located within its corresponding electrical and instrumentation zone.

[0046] The main control equipment for monitoring the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

[0047] Optionally, the main electrical equipment area is divided into three floors, from top to bottom: the second floor, the third floor, and the fourth floor.

[0048] The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment.

[0049] The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone, the power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone, and the batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

[0050] Optionally, the main control area is divided into two floors, namely the fifth floor above ground and the sixth floor above ground.

[0051] The five floors above ground include a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room.

[0052] The six floors above ground house a fresh air chamber, a pressurized air supply room, an equipment cooling water system fluctuation box, and a main steam isolation valve hoisting room.

[0053] The fourth floor above ground also includes a main water supply pipeline area for arranging the main water supply pipeline. The fifth floor above ground also includes a main steam pipeline area corresponding to the main water supply pipeline area for arranging the main steam pipeline. The sixth floor above ground also includes a hoisting area corresponding to the main water supply pipeline area for hoisting the main water supply pipeline and the main water supply pipeline.

[0054] To adapt to the technological innovations of third-generation nuclear power plants, this invention divides the safety building space into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. Furthermore, the mechanical equipment area is further divided into a dedicated safety equipment area located closer to the reactor building and an auxiliary equipment area located further away from the reactor building. The mechanical equipment for the dedicated safety system is placed in the dedicated safety equipment area, while the electrical equipment providing power to the dedicated safety system, the instrumentation and control equipment controlling the dedicated safety system, and the main control equipment monitoring the instrumentation and control equipment are placed in the electrical and instrumentation equipment area. The mechanical equipment that assists in realizing the functions of the safety building is placed in the auxiliary equipment area. In other words, this invention's safety building is divided into zones for dedicated safety system mechanical and electrical and instrumentation equipment, as well as other mechanical equipment that assists in realizing the functions of the electrical building. This effectively adapts to the overall layout of the nuclear island in third-generation nuclear power plants and, while meeting the safety requirements of third-generation nuclear power plants, reduces the building size and improves the economic efficiency of the nuclear island. Attached Figure Description

[0055] Figure 1 This is a schematic diagram showing the location of the safety building of the present invention on the nuclear island;

[0056] In the diagram: RX is the reactor building; KA is the fuel building; SX is the safety building; NH is the nuclear auxiliary building; DA is the emergency diesel generator building in column A; DB is the emergency diesel generator building in column B; UR is the auxiliary building; PR is the nuclear island fire pump room; KY is the emergency air compressor room; KP is the nuclear island gantry; DU is the SBO diesel generator building.

[0057] Figure 2 The structural zoning diagram of the safe workshop of this invention;

[0058] In the diagram: SU refers to the northern half of the safety building; SD refers to the southern half of the safety building.

[0059] Figure 3 This is a layout diagram of the second basement level of the safety building of the present invention.

[0060] Figure 4 This is a layout diagram of the underground floor of the safety factory building according to the present invention.

[0061] Figure 5 This is a layout diagram of the first floor of the safety factory building according to the present invention.

[0062] Figure 6 This is a layout diagram of the two-story above-ground safety factory building of the present invention.

[0063] Figure 7 This is a layout diagram of the three-story above-ground safety building of the present invention.

[0064] Figure 8 This is a layout diagram of the four-story above-ground safety factory building of the present invention.

[0065] Figure 9 This is a layout diagram of the five-story above-ground safety factory building of the present invention.

[0066] Figure 10 This is a layout diagram of the six-story above-ground safety building of the present invention. Detailed Implementation

[0067] The technical solutions of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of the invention.

[0068] In the description of this invention, it should be noted that the use of terms such as "above" to indicate orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating and simplifying the description. It does 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, and therefore should not be construed as a limitation of this invention.

[0069] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0071] This invention provides a method for arranging a safety building in a nuclear power plant, comprising:

[0072] The safety building space is divided into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area is further divided into a dedicated safety equipment area located close to the reactor building and an auxiliary equipment area located further away from the reactor building.

[0073] The mechanical equipment for the dedicated safety system is arranged in the dedicated safety equipment area. The electrical equipment that provides power to the dedicated safety system, the instrumentation and control equipment that controls the dedicated safety system, and the main control equipment that monitors the instrumentation and control equipment are arranged in the instrumentation and control equipment area. The mechanical equipment that helps to realize the functions of the safe workshop is arranged in the auxiliary equipment area.

[0074] This invention also provides a nuclear power plant safety building.

[0075] The safety building includes a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area comprises a dedicated safety equipment area located near the reactor building and an auxiliary equipment area located away from the reactor building.

[0076] The dedicated safety equipment area contains mechanical equipment for the dedicated safety system. The electrical and instrumentation equipment area contains electrical equipment that provides power to the dedicated safety system, instrumentation and control equipment that controls the dedicated safety system, and main control equipment that monitors the instrumentation and control equipment. The auxiliary equipment area contains mechanical equipment that assists in realizing the functions of the safe workshop.

[0077] Example 1:

[0078] This embodiment provides a method for arranging a safety building in a nuclear power plant, including:

[0079] The safety building space is divided into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area is further divided into a dedicated safety equipment area located close to the reactor building and an auxiliary equipment area located further away from the reactor building.

[0080] The mechanical equipment for the dedicated safety system is arranged in the dedicated safety equipment area. The electrical equipment that provides power to the dedicated safety system, the instrumentation and control equipment that controls the dedicated safety system, and the main control equipment that monitors the instrumentation and control equipment are arranged in the instrumentation and control equipment area. The mechanical equipment that helps to realize the functions of the safe workshop is arranged in the auxiliary equipment area.

[0081] Therefore, to adapt to the technological innovations of third-generation nuclear power plants, this invention divides the safety building space into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. Furthermore, the mechanical equipment area is divided into a dedicated safety equipment area located near the reactor building and an auxiliary equipment area located further away from the reactor building. The mechanical equipment for the dedicated safety system is placed in the dedicated safety equipment area, while the electrical equipment providing power to the dedicated safety system, the instrumentation and control equipment controlling the dedicated safety system, and the main control equipment monitoring the instrumentation and control equipment are placed in the electrical and instrumentation equipment area. The mechanical equipment that assists in realizing the functions of the safety building is placed in the auxiliary equipment area. In other words, this invention's safety building is divided into zones for dedicated safety system mechanical and electrical and instrumentation equipment, as well as other mechanical equipment that assists in realizing the functions of the electrical building. This effectively adapts to the overall layout of the nuclear island in third-generation nuclear power plants and, while meeting the safety requirements of third-generation nuclear power plants, reduces the building size and improves the economic efficiency of the nuclear island.

[0082] In this embodiment, an L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The opening of the L-shaped corridor faces the reactor building. It includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first direction and the second direction are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The mechanical equipment of the dedicated safety system in column A is arranged in the first dedicated safety equipment zone, and the mechanical equipment of the dedicated safety system in column B is arranged in the second dedicated safety equipment zone.

[0083] The two dedicated safety facilities are arranged in separate zones, which can meet the physical isolation of the mechanical equipment of the dedicated safety facilities in columns A and B. The vertical arrangement of the mechanical equipment of the dedicated safety system in columns A and B can minimize the impact of seismic waves from different directions on the equipment and avoid the simultaneous loss of function of the dedicated safety system equipment, thereby improving the safety and reliability of the nuclear power plant.

[0084] In this embodiment, the mechanical equipment of the dedicated safety system includes a safety injection device, a reactor cavity water injection cooling device, a low-pressure safety injection device, a medium-pressure safety injection device, and an emergency boron injection device.

[0085] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction.

[0086] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

[0087] In this embodiment, the mechanical equipment that assists in realizing the functions of the safe workshop includes auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe workshop cooling equipment.

[0088] The auxiliary water supply equipment and the chilled water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area between the auxiliary water supply equipment and the chilled water equipment within the auxiliary equipment area.

[0089] The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

[0090] In this embodiment, the space of the mechanical equipment area is divided into three levels, from bottom to top: the second basement level, the first basement level, and the first floor above ground.

[0091] The safety injection pumps for the safety injection equipment, the cooling pumps for the reactor cavity water injection cooling equipment, the safety injection pumps for the low-pressure safety injection equipment, the safety injection pumps for the medium-pressure safety injection equipment, the injection tank and injection pump for the emergency boron injection equipment, the electric pumps for the auxiliary water supply equipment, the ventilation equipment for mechanical equipment, and the heat exchangers for the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The remaining area on the second basement level of the auxiliary equipment area is divided into multiple pipe rooms to accommodate the connecting pipes for the relevant mechanical equipment.

[0092] The motors for the safety injection pumps, the cooling pumps for the reactor cavity water injection cooling system, the safety injection pumps for the low-pressure safety injection system, the sealed water tanks for the auxiliary water supply system, and the chilled water pumps for the safety building cooling system are all located on the first basement level. Other areas on the first basement level of the auxiliary equipment area are divided into multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables for the relevant equipment are respectively arranged.

[0093] The chilled water units, control rod-related equipment, battery ventilation equipment, cooling pumps and ventilation equipment of the safety plant cooling equipment are arranged on the ground floor of the auxiliary equipment area. The other areas on the ground floor of the auxiliary equipment area are divided into multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged on the ground floor of the dedicated safety equipment area.

[0094] In this embodiment, the space of the electrical equipment area is divided into a main electrical equipment area and a main control area located above the main electrical equipment area.

[0095] The main electrical and instrumentation equipment area is divided into multiple electrical and instrumentation zones, each corresponding to one of the multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is then installed within its corresponding electrical and instrumentation zone.

[0096] The main control equipment that monitors the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

[0097] As a result, there is no intersection of electrical equipment and cables between different zones, and the physical isolation of the cables is good, which ensures the integrity of the reactor protection system and improves the reliability of the plant.

[0098] In this embodiment, the space of the main electrical equipment area is divided into three layers, from top to bottom: the second floor, the third floor, and the fourth floor.

[0099] The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment.

[0100] The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone. The power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone. The batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

[0101] This embodiment divides the spatial area of ​​the main electrical and instrumentation equipment area in the safety plant into layers according to the logical relationship of the main wiring of the electrical and instrumentation equipment, so that the layout of the electrical and instrumentation equipment meets the main wiring sequence of the cables and the cable laying path is the shortest; thus, the plant layout is compact, the structure is simple, the functional zoning is clear, the cable channels are unobstructed, the distance is short, and the physical isolation effect is good.

[0102] In this embodiment, the space of the main control area is divided into two floors, namely the fifth floor above ground and the sixth floor above ground.

[0103] The five-story floor plan is divided into a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room.

[0104] The six floors above ground house the fresh air chamber, pressurized air supply room, equipment cooling water system fluctuation box, and main steam isolation valve hoisting room.

[0105] The fourth floor plan is divided into a main water supply pipeline area for the installation of the main water supply pipeline. The fifth floor plan is divided into a main steam pipeline area corresponding to the main water supply pipeline area for the installation of the main steam pipeline. The sixth floor plan is divided into a hoisting area corresponding to the main water supply pipeline area for the hoisting of the main water supply pipeline.

[0106] The safety building of the nuclear power plant in this embodiment will be described in detail below with reference to the accompanying drawings.

[0107] The safety building in this embodiment mainly houses electrically driven dedicated safety systems, electrical system equipment, instrumentation and control system equipment, a main control room and supporting facilities, main water supply and main steam pipelines, etc. The building is structurally divided into north and south sections, and functionally divided into electrical and instrumentation equipment area and mechanical equipment area. It adopts a single-story exterior wall structure, with walls and floors in special areas designed to withstand impacts from large aircraft. Figure 1 and Figure 2 As shown, the safety building is structurally divided into two parts, north and south. The building is located in the northeast corner of the nuclear island building complex, adjacent to the reactor building and nuclear auxiliary building.

[0108] Figure 3This is a layout diagram of the second basement level of the safety plant of the present invention. An inverted L-shaped corridor divides the level into two areas. The active dedicated safety system equipment is located near the containment vessel; this area is designated as the green zone. Column A of the dedicated safety system equipment is arranged east-west, including the safety injection heat exchanger room, safety injection pump room, reactor cavity water injection cooling pump room, low-pressure safety injection pump room, medium-pressure safety injection pump room, emergency boron injection tank room, and emergency boron injection pump room. Column B of the dedicated safety system equipment is arranged north-south. The vertical arrangement of columns A and B minimizes the impact of seismic waves from different directions on the equipment, preventing simultaneous malfunction of the dedicated safety system equipment and improving the safety and reliability of the nuclear power plant. The two columns away from the containment vessel are other auxiliary systems; this area is designated as the white zone. These include two rows of auxiliary feedwater electric pump rooms, two rows of equipment cooling water heat exchanger rooms (which, due to their large size, are connected to the first basement level), two sets of ventilation equipment rooms for the mechanical areas of the safety plant, pipe rooms, and cable rooms, etc.

[0109] Figure 4 This is a layout diagram of the first basement level of the safety facility of the present invention. The structural walls and radiation zones of this level basically correspond to those of the second basement level. With the L-shaped corridor as the boundary, the A / B safety injection pump motor room, the reactor cavity water injection cooling pump motor room, the low-pressure safety injection pump motor room, and two pipe rooms are arranged near the reactor area. Other rooms are split-level. Further away from the reactor area are two rows of auxiliary feedwater system tank rooms, which are connected to the ground floor. The two rows of tanks are directly above the two rows of auxiliary feedwater pump rooms, facilitating water intake for the auxiliary feedwater pumps. Also included are three safety facility chilled water pump rooms, as well as pipe rooms and cable rooms.

[0110] Figure 5 This is a layout diagram of the first floor of the safety facility of this invention. The structural walls and radiation zones of this floor basically correspond to those of the first basement floor. Using an L-shaped corridor as the boundary, the hoisting rooms for dedicated safety system equipment (rows A and B) and the dedicated ventilation system equipment are arranged near the reactor area; further away from the reactor area are arranged two rows of battery ventilation equipment rooms, two rows of safety facility chiller units, two rows of equipment cooling water system pump rooms, equipment cooling water system ventilation equipment rooms, control rod power supply rooms, and rod control and position control cabinet rooms, etc. This floor serves as the gateway for operating and visiting personnel to enter the main control room and includes an exhibition hall.

[0111] Figure 6This is a layout diagram of the second floor of the safety plant of the present invention. Starting from this floor, the safety plant mainly houses the electrical and instrumentation system equipment and structurally serves as a transfer floor. This floor primarily houses the battery room, cable room, and ventilation system equipment room for the cable room. The northern half of the safety plant includes a corridor, which also serves as the boundary between the A and B rows of electrical and instrumentation control system equipment. The B row battery room and B row cable room are located on the left side of the corridor, while the A row battery room and A row cable room are located on the right side. A cable channel is provided in the middle of the battery room to facilitate the installation of cables entering and exiting the nuclear island. The southern half of the safety plant houses the A row cable room and the A row cable room ventilation system equipment room.

[0112] Figure 7 This is a layout diagram of the three-story safety building of the present invention. The structural walls of this floor are basically corresponding to those of the second floor. The building includes rooms for DC and UPS electrical equipment, medium and low voltage power distribution, low voltage power distribution, and ventilation system equipment in the electrical area. The DC and UPS electrical equipment room corresponds vertically to the battery room, facilitating cable laying between the batteries and the DC and UPS power distribution cabinets. The medium and low voltage power distribution room (low voltage power distribution room) corresponds vertically to the cable room, facilitating the direct access of the outgoing cables from the medium and low voltage power distribution cabinets through the floor slab into the cable room. The northern half of the safety building includes a corridor, which also serves as the boundary between the A and B columns of electrical instrumentation and control system equipment. The left side of the corridor houses the B column of DC and UPS electrical equipment and medium and low voltage power distribution cabinets, while the right side houses the A column of DC and UPS electrical equipment and medium and low voltage power distribution cabinets. The southern half of the safety building houses the A column of medium and low voltage power distribution rooms, the low voltage power distribution room, and the A column of electrical area ventilation system equipment room.

[0113] Figure 8 This is a layout diagram of the four floors above ground of the safety building of the present invention. The structural walls of the electrical and instrumentation area on this floor basically correspond to those on the three floors above ground. The northern half of the safety building includes a corridor, which also serves as the boundary line between the A / B series electrical and instrumentation control system equipment. The B series instrumentation control equipment room and the instrumentation control area ventilation system equipment room are arranged on the left side of the corridor, and the main water supply pipe corridor is arranged on the far left. The main water supply pipe corridor is physically isolated from the instrumentation control equipment by a wall. The main control room ventilation equipment room, communication equipment room, and remote shutdown station are arranged on the right side of the corridor. The southern half of the safety building includes the A series instrumentation control equipment room and the instrumentation control area ventilation system equipment room. Among them, the A / B series instrumentation control cabinets related to the control and monitoring of items inside the containment are arranged in the room close to the containment.

[0114] Figure 9This is a layout diagram of the five-story safety plant of the present invention. The northern half of the safety plant houses the main steam pipe corridor, the main control room, and related rooms, while the southern half is the plant roof, containing cable channels, the air-cooled refrigeration unit for the safety plant, and roof ventilation rooms. The main steam pipe is located on the far left of the northern half, corresponding vertically to the main water supply corridor. To its right is the main control room and related rooms, physically separated by a structural wall. The main control room is located on the floor above the instrumentation and control equipment room, directly above the instrumentation and control equipment room in column A, with its projection adjacent to the instrumentation and control equipment room in column B. This layout facilitates the cables from the instrumentation and control equipment rooms in columns A and B to pass through the overhead outlet to the main control room panel and backup panel. In addition, surrounding the main control room are computer rooms, isolation offices, toilets, changing rooms, living areas, the shift supervisor's office of the technical support center, a morning meeting room, physical protection equipment rooms, communication system battery rooms, communication system battery exhaust fan rooms, and owner's functional rooms, which can meet the basic working and living needs of the power plant operators.

[0115] Figure 10 This is a layout diagram of the six-story safety plant of the present invention. This floor includes a fresh air chamber, a pressurized air supply room, a cooling water system fluctuation box, and a main steam isolation valve hoisting room. The main steam isolation valve hoisting room is located above the main steam pipe corridor.

[0116] As the centralized area for electrical and instrumentation equipment in the nuclear island, the safety building is equipped with cable duct interfaces leading to the conventional island, BOP (Balance of Plant), and other buildings in the nuclear island. Cable ducts leading to the conventional island and BOP are located on the north side of the first basement level and the north side of the second floor. The left side of the northern half of the first and second basement levels connects to the cable corridor, allowing B-line cables to reach other buildings in the nuclear island. Passages are located on the southern half of the second, third, and fourth floors, which can also serve as cable ducts for A-line cables to reach other buildings in the nuclear island.

[0117] In summary, this embodiment proposes an advanced method for arranging a compact nuclear power plant safety building, which can reduce the building size and improve the economic efficiency of the nuclear island while meeting the safety requirements of third-generation nuclear power plants; and arrange other auxiliary system items that are adapted to the overall layout of the nuclear island while meeting the physical isolation requirements of redundant dedicated safety facilities.

[0118] The resulting safe plant space has high utilization rate, compact layout, diverse functions, and a logical room arrangement. This layout simultaneously satisfies the physical isolation of dedicated safety facilities in columns A and B and electrical and instrumentation systems in columns A and B. The cable channels are shorter and there are fewer crossings between cables from different sequences, greatly improving the economic efficiency of the nuclear power plant.

[0119] Example 2:

[0120] This embodiment provides a safety building for a nuclear power plant.

[0121] The safety building includes a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area comprises a dedicated safety equipment area located near the reactor building and an auxiliary equipment area located away from the reactor building.

[0122] The dedicated safety equipment area contains mechanical equipment for the dedicated safety system. The electrical and instrumentation equipment area contains electrical equipment that provides power to the dedicated safety system, instrumentation and control equipment that controls the dedicated safety system, and main control equipment that monitors the instrumentation and control equipment. The auxiliary equipment area contains mechanical equipment that assists in realizing the functions of the safe workshop.

[0123] In this embodiment, an L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The opening of the L-shaped corridor faces the reactor building. It includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first direction and the second direction are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The first dedicated safety equipment zone is equipped with A columns of mechanical equipment for the dedicated safety system, and the second dedicated safety equipment zone is equipped with B columns of mechanical equipment for the dedicated safety system.

[0124] In this embodiment, the mechanical equipment of the dedicated safety system includes a safety injection device, a reactor cavity water injection cooling device, a low-pressure safety injection device, a medium-pressure safety injection device, and an emergency boron injection device.

[0125] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction.

[0126] The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

[0127] In this embodiment, the mechanical equipment that assists in realizing the functions of the safe workshop includes auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe workshop cooling equipment.

[0128] The auxiliary water supply equipment and the cooling water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area of ​​the auxiliary equipment area between the auxiliary water supply equipment and the cooling water equipment.

[0129] The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

[0130] In this embodiment, the space of the mechanical equipment area is divided into three levels, from bottom to top: the second basement level, the first basement level, and the first floor above ground.

[0131] The safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the safety injection pumps of the medium-pressure safety injection equipment, the injection tank and injection pump of the emergency boron injection equipment, the electric pumps of the auxiliary water supply equipment, the ventilation equipment of the mechanical equipment, and the heat exchangers of the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The second basement level of the auxiliary equipment area also includes multiple pipe rooms for arranging the connecting pipes of the relevant mechanical equipment.

[0132] The motors for the safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the sealed water tanks of the auxiliary water supply equipment, and the chilled water pumps of the safety building cooling equipment are all located in the basement. The basement of the auxiliary equipment area also includes multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables of the relevant equipment are arranged.

[0133] The chilled water unit, control rod related equipment, battery ventilation equipment, cooling pump and ventilation equipment of the safety plant cooling equipment are arranged in the ground floor of the auxiliary equipment area. The ground floor of the auxiliary equipment area also includes multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of the mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged in the ground floor of the dedicated safety equipment area.

[0134] In this embodiment, the space of the electrical equipment area is divided into a main electrical equipment area and a main control area located above the main electrical equipment area.

[0135] The main electrical and instrumentation equipment area comprises multiple electrical and instrumentation zones corresponding to multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is located within its corresponding electrical and instrumentation zone.

[0136] The main control equipment for monitoring the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

[0137] In this embodiment, the space of the main electrical equipment area is divided into three floors, from top to bottom: the second floor above ground, the third floor above ground, and the fourth floor above ground.

[0138] The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment.

[0139] The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone, the power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone, and the batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

[0140] In this embodiment, the main control area is divided into two floors, namely the fifth floor above ground and the sixth floor above ground.

[0141] The five floors above ground include a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room.

[0142] The six floors above ground house a fresh air chamber, a pressurized air supply room, an equipment cooling water system fluctuation box, and a main steam isolation valve hoisting room.

[0143] The fourth floor above ground also includes a main water supply pipeline area for arranging the main water supply pipeline. The fifth floor above ground also includes a main steam pipeline area corresponding to the main water supply pipeline area for arranging the main steam pipeline. The sixth floor above ground also includes a hoisting area corresponding to the main water supply pipeline area for hoisting the main water supply pipeline and the main water supply pipeline.

[0144] In summary, this embodiment of the safety building features high space utilization, a compact layout, diverse functions, and a logically sound room arrangement. This layout simultaneously satisfies the physical isolation requirements of dedicated safety facilities in columns A and B, as well as the electrical and instrumentation systems in columns A and B. The cable channels are shorter, and there are fewer crossings between cables from different sequences, significantly improving the economic efficiency of the nuclear power plant.

[0145] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for arranging a safety building in a nuclear power plant, characterized in that, include: The safety building space is divided into a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area is further divided into a dedicated safety equipment area located close to the reactor building and an auxiliary equipment area located further away from the reactor building. The mechanical equipment for the dedicated safety system is arranged in the dedicated safety equipment area. The electrical equipment that provides power to the dedicated safety system, the instrumentation and control equipment that controls the dedicated safety system, and the main control equipment that monitors the instrumentation and control equipment are arranged in the instrumentation and control equipment area. The mechanical equipment that helps to realize the safety function of the plant is arranged in the auxiliary equipment area. An L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The L-shaped corridor opens towards the reactor building. It includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first direction and the second direction are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The mechanical equipment of the dedicated safety system in column A is arranged in the first dedicated safety equipment zone, and the mechanical equipment of the dedicated safety system in column B is arranged in the second dedicated safety equipment zone. The mechanical equipment of the dedicated safety system in column A is arranged perpendicular to the mechanical equipment of the dedicated safety system in column B.

2. The method for arranging a nuclear power plant safety building according to claim 1, characterized in that, The dedicated safety system includes mechanical equipment such as safety injection equipment, reactor cavity water injection and cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment. The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction. The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

3. The method for arranging a nuclear power plant safety building according to claim 2, characterized in that, The auxiliary mechanical equipment used to achieve the functions of the safe plant includes auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe plant cooling equipment. The auxiliary water supply equipment and the chilled water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area between the auxiliary water supply equipment and the chilled water equipment within the auxiliary equipment area. The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

4. The method for arranging a nuclear power plant safety building according to claim 3, characterized in that, The mechanical equipment area is divided into three levels, from bottom to top: the second basement level, the first basement level, and the first floor above ground. The safety injection pumps for the safety injection equipment, the cooling pumps for the reactor cavity water injection cooling equipment, the safety injection pumps for the low-pressure safety injection equipment, the safety injection pumps for the medium-pressure safety injection equipment, the injection tank and injection pump for the emergency boron injection equipment, the electric pumps for the auxiliary water supply equipment, the ventilation equipment for mechanical equipment, and the heat exchangers for the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The remaining area on the second basement level of the auxiliary equipment area is divided into multiple pipe rooms to accommodate the connecting pipes for the relevant mechanical equipment. The motors for the safety injection pumps, the cooling pumps for the reactor cavity water injection cooling system, the safety injection pumps for the low-pressure safety injection system, the sealed water tanks for the auxiliary water supply system, and the chilled water pumps for the safety building cooling system are all located on the first basement level. Other areas on the first basement level of the auxiliary equipment area are divided into multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables for the relevant equipment are respectively arranged. The chilled water units, control rod-related equipment, battery ventilation equipment, cooling pumps and ventilation equipment of the safety plant cooling equipment are arranged on the ground floor of the auxiliary equipment area. The other areas on the ground floor of the auxiliary equipment area are divided into multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged on the ground floor of the dedicated safety equipment area.

5. The method for arranging a nuclear power plant safety building according to any one of claims 1-4, characterized in that, The space of the electrical and instrumentation equipment area is divided into the main electrical and instrumentation equipment area and the main control area located above the main electrical and instrumentation equipment area. The main electrical and instrumentation equipment area is divided into multiple electrical and instrumentation zones, each corresponding to one of the multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is then installed within its corresponding electrical and instrumentation zone. The main control equipment that monitors the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

6. The method for arranging a nuclear power plant safety building according to claim 5, characterized in that, The space of the main electrical equipment area is divided into three floors, from top to bottom: the second floor above ground, the third floor above ground, and the fourth floor above ground. The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment. The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone. The power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone. The batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

7. The method for arranging a nuclear power plant safety building according to claim 6, characterized in that, The main control area is divided into two floors, namely the fifth floor above ground and the sixth floor above ground. The five-story floor plan is divided into a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room. The six floors above ground house the fresh air chamber, pressurized air supply room, equipment cooling water system fluctuation box, and main steam isolation valve hoisting room. The fourth floor plan is divided into a main water supply pipeline area for the installation of the main water supply pipeline. The fifth floor plan is divided into a main steam pipeline area corresponding to the main water supply pipeline area for the installation of the main steam pipeline. The sixth floor plan is divided into a hoisting area corresponding to the main water supply pipeline area for the hoisting of the main water supply pipeline.

8. A safety building for a nuclear power plant, characterized in that, The safety building includes a mechanical equipment area and an electrical and instrumentation equipment area located above the mechanical equipment area. The mechanical equipment area comprises a dedicated safety equipment area located near the reactor building and an auxiliary equipment area located away from the reactor building. The dedicated safety equipment area is equipped with mechanical equipment for the dedicated safety system; the electrical and instrumentation equipment area is equipped with electrical equipment that provides power to the dedicated safety system, instrumentation and control equipment that controls the dedicated safety system, and main control equipment that monitors the instrumentation and control equipment; and the auxiliary equipment area is equipped with mechanical equipment that helps to realize the functions of the safe workshop. An L-shaped corridor is provided between the dedicated safety equipment area and the auxiliary equipment area. The L-shaped corridor opens towards the reactor building and includes a first corridor arranged along a first direction and a second corridor arranged along a second direction. The first and second directions are perpendicular to each other, so that the dedicated safety equipment area is divided into a first dedicated safety equipment zone located inside the first corridor and a second dedicated safety equipment zone located inside the second corridor. The mechanical equipment of the dedicated safety system in column A is arranged in the first dedicated safety equipment zone, and the mechanical equipment of the dedicated safety system in column B is arranged in the second dedicated safety equipment zone. The mechanical equipment of the dedicated safety system in column A is arranged perpendicular to the mechanical equipment of the dedicated safety system in column B.

9. The nuclear power plant safety building according to claim 8, characterized in that, The dedicated safety system includes mechanical equipment such as safety injection equipment, reactor cavity water injection and cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment. The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column A are arranged sequentially along the first direction. The safety injection equipment, reactor cavity water injection cooling equipment, low-pressure safety injection equipment, medium-pressure safety injection equipment, and emergency boron injection equipment of the dedicated safety system in column B are arranged sequentially along the second direction.

10. The nuclear power plant safety building according to claim 9, characterized in that, The auxiliary mechanical equipment used to achieve the functions of the safe plant includes auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safe plant cooling equipment. The auxiliary water supply equipment and the cooling water equipment are located at opposite ends of the auxiliary equipment area. The mechanical equipment ventilation equipment, control rod related equipment, battery ventilation equipment, and safety building cooling equipment are arranged in the area of ​​the auxiliary equipment area between the auxiliary water supply equipment and the cooling water equipment. The auxiliary water supply equipment, cooling water equipment, mechanical equipment ventilation equipment, battery ventilation equipment, and safety building cooling equipment are all equipped with two rows.

11. The nuclear power plant safety building according to claim 10, characterized in that, The mechanical equipment area is divided into three levels, from bottom to top: the second basement level, the first basement level, and the first floor above ground. The safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the safety injection pumps of the medium-pressure safety injection equipment, the injection tank and injection pump of the emergency boron injection equipment, the electric pumps of the auxiliary water supply equipment, the ventilation equipment of the mechanical equipment, and the heat exchangers of the chilled water equipment are arranged on the second basement level. The chilled water heat exchangers extend upwards to the first basement level. The second basement level of the auxiliary equipment area also includes multiple pipe rooms for arranging the connecting pipes of the relevant mechanical equipment. The motors for the safety injection pumps of the safety injection equipment, the cooling pumps of the reactor cavity water injection cooling equipment, the safety injection pumps of the low-pressure safety injection equipment, the sealed water tanks of the auxiliary water supply equipment, and the chilled water pumps of the safety building cooling equipment are all located in the basement. The basement of the auxiliary equipment area also includes multiple pipe rooms and multiple cable rooms, where the connecting pipes and cables of the relevant equipment are arranged. The chilled water unit, control rod related equipment, battery ventilation equipment, cooling pump and ventilation equipment of the safety plant cooling equipment are arranged in the ground floor of the auxiliary equipment area. The ground floor of the auxiliary equipment area also includes multiple pipe rooms to arrange the connecting pipes of related mechanical equipment. Multiple hoisting holes are opened in the floor slab between the basement and the ground floor of the dedicated safety equipment area to facilitate the hoisting of the mechanical equipment of the dedicated safety system. The ventilation equipment of the dedicated safety system is arranged in the ground floor of the dedicated safety equipment area.

12. The nuclear power plant safety building according to any one of claims 8-11, characterized in that, The space of the electrical and instrumentation equipment area is divided into the main electrical and instrumentation equipment area and the main control area located above the main electrical and instrumentation equipment area. The main electrical and instrumentation equipment area comprises multiple electrical and instrumentation zones corresponding to multiple reactor protection and monitoring systems. The electrical and instrumentation equipment for each reactor protection and monitoring system is located within its corresponding electrical and instrumentation zone. The main control equipment for monitoring the electrical and instrumentation equipment of each reactor protection and monitoring system is located in the main control area.

13. The nuclear power plant safety building according to claim 12, characterized in that, The main electrical equipment area is divided into three floors, from top to bottom: the second floor, the third floor, and the fourth floor. The electrical equipment of each reactor protection and monitoring system includes monitoring equipment for monitoring the reactor core, power supply equipment for supplying power to the monitoring equipment, and batteries that draw power from the power supply equipment and provide backup power to the power supply equipment. The monitoring equipment for each reactor protection and monitoring system is located on the fourth floor of the corresponding electrical and instrumentation zone, the power supply equipment for each reactor protection and monitoring system is located on the third floor of the corresponding electrical and instrumentation zone, and the batteries for each reactor protection and monitoring system are located on the second floor of the corresponding electrical and instrumentation zone.

14. The nuclear power plant safety building according to claim 13, characterized in that, The main control area is divided into two floors, namely the fifth floor above ground and the sixth floor above ground. The five floors above ground include a main control room, and surrounding it are computer rooms, isolation offices, toilets, changing rooms, living areas, the technical support center shift supervisor's office, a morning meeting room, a physical protection equipment room, a communication system battery room, a communication system battery exhaust fan room, and owner's functional rooms. The main control equipment is located in the main control room. The six floors above ground house a fresh air chamber, a pressurized air supply room, an equipment cooling water system fluctuation box, and a main steam isolation valve hoisting room. The fourth floor above ground also includes a main water supply pipeline area for arranging the main water supply pipeline. The fifth floor above ground also includes a main steam pipeline area corresponding to the main water supply pipeline area for arranging the main steam pipeline. The sixth floor above ground also includes a hoisting area corresponding to the main water supply pipeline area for hoisting the main water supply pipeline and the main water supply pipeline.

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