CN114482647A - Nuclear island plant layout planning method and nuclear island plant - Google Patents
Nuclear island plant layout planning method and nuclear island plant Download PDFInfo
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Abstract
The invention discloses a layout planning method of a nuclear island plant, which comprises the following steps: determining the items to be arranged in the nuclear island plant and the arrangement requirements of all the items; dividing the nuclear island plant into a plurality of sub-plants according to the arrangement requirements of all items; and determining the relative position of each workshop according to the interface relation among the workshops. The invention also discloses a nuclear island plant. The method can provide systematic guidance planning for the local arrangement of the nuclear island plants from the overall arrangement to each plant inside, greatly improve the reasonability and the economy of the arrangement of the nuclear island plants, and is suitable for the arrangement of the nuclear island plants of various types of experiments or commercial nuclear facilities, particularly nuclear fission type experiments or commercial nuclear facilities.
Description
Technical Field
The invention belongs to the field of nuclear engineering, and particularly relates to a nuclear island plant layout planning method and a nuclear island plant.
Background
Since the 40 s of the 20 th century, countries in the world have built a plurality of nuclear facilities with different functions and various categories, at present, there are more than 450 nuclear power plants which are only commercially used in the world, and the nuclear facilities with the main functions of experimental nature are widely existed in the main countries in the world. The nuclear facilities are divided into a heavy nuclear fission reactor (a thermal neutron reactor and a fast neutron reactor) and a light nuclear fusion reactor according to the difference of nuclear reaction principles, wherein the light nuclear fusion reactor is influenced by physical principles, material limitation and other factors, most of the existing in-service nuclear facilities have experimental properties, and the development of the heavy nuclear fission technology is mature.
At present, commercial heavy nuclear fission reactors designed based on the fission principle can be classified into reactor types such as a light water reactor, a heavy water reactor, a gas cooled reactor, a molten salt reactor and the like according to different coolants of the reactors, and on the basis, various reactor types such as an AP series pressurized water reactor in the united states, a BN series sodium-cooled fast neutron reactor in russia, an ACP series pressurized water reactor in china, an M310/EPR pressurized water reactor in france, a boiling water reactor in japan, a heavy water reactor in canada and the like are derived according to different reactor types, safety system schemes and the like.
However, although the current nuclear engineering field, especially the design and construction technology of thermal neutron reactors, is mature, the existing nuclear island plants of various nuclear facilities still have some disadvantages in the arrangement and planning:
(1) the layout of the factory building is not reasonable enough, the coordination of the functional areas in the factory building is not high, and the transportation and the passing are inconvenient;
(2) radioactivity protection lacks overall consideration, and a protection area occupies a large area and is large in investment;
(3) the plant structural design is transitional and redundant, and the economy is not high.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a method for planning the arrangement of nuclear island plants and the nuclear island plants arranged by the method for planning the arrangement of the nuclear island plants.
According to one aspect of the invention, the invention provides a method for planning nuclear island plant layout, which has the technical scheme that:
a method for planning nuclear island plant layout comprises the following steps:
s1, determining the items to be arranged in the nuclear island plant and the arrangement requirements of the items;
s2, dividing the nuclear island plant into a plurality of sub-plants according to the arrangement requirements of each item;
and S3, determining the relative positions of the branch buildings according to the interface relation among the branch buildings.
Preferably, the step S1 of determining the arrangement requirement of each item includes: determining the arrangement volume of each item and determining the safety level, the earthquake resistance level and the radioactivity control requirement of each item.
Preferably, the arrangement volume of each item is determined according to the volume of each item and the space required by operation and maintenance; and determining the safety level, the anti-seismic level and the radioactivity control requirement of each item according to the function type of the system to which each item belongs.
Preferably, the dividing the nuclear island plant into a plurality of sub-plants in step S2 includes:
s201, sorting the arrangement volumes of all the items in descending order, and screening out big items with the arrangement volumes sorted in the front and the sum of the arrangement volumes accounting for more than 50% -80% of the total arrangement volume;
s202, determining a topological relation between systems in a nuclear island plant according to a connection relation between a system to which the large item belongs and a reactor main process system, recording a system directly connected with the reactor main process system as a first-level system, and recording a system indirectly connected with the reactor main process system through the first-level system as a second-level system;
s203, the reactor main process system is divided into a sub-plant which is marked as a reactor plant, the reactor plant is arranged in the middle of the nuclear island plant,
and dividing the rest of the branch rooms according to the radioactivity control requirement, the arrangement volume, the safety level and the earthquake resistance level of each item in the first-level system and the second-level system, and arranging the rest of the branch rooms around the reactor plant.
Preferably, the dividing of the remaining sub-factories according to the radioactivity control requirement, the arrangement volume, the safety level, and the earthquake resistance level of each item in the first hierarchy system and the second hierarchy system in step S203 includes:
s2031, dividing the first hierarchy system into a first supervision area system and a first control area system according to the radioactivity control requirements of the first hierarchy system and the second hierarchy system, dividing the second hierarchy system into a second supervision area system and a second control area system, arranging the first supervision area system and the second supervision area system around a reactor plant as supervision areas, and arranging the first control area system and the second control area system around the reactor plant as control areas;
s2032, in the supervision area, a branch factory building is separately arranged in a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the first supervision area system, the branch factory building is marked as a first class supervision factory building, a branch factory building is arranged in a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the first supervision area system according to the safety class and the anti-seismic class, the branch factory building is marked as a second class supervision factory building, a branch factory building is separately arranged in a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the second supervision area system, the branch factory building is marked as a third class supervision factory building, a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the second supervision area system is merged and arranged in a second class supervision factory building with the corresponding class according to the safety class and the anti-seismic class, and/or in the control area, independently setting a branch plant for a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in the first control area system as a first type of control plant, independently setting the branch plant for a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in the first control area system according to the safety level and the anti-seismic level as a second type of control plant, independently setting a branch plant for a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in the second control area system as a third type of control plant, and independently setting a branch plant for a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in the second control area system according to the safety level, And the earthquake-resistant grade is combined and set to the second type of control plant with the corresponding grade.
Preferably, the safety grade is divided into a safety grade and a non-safety grade, and the earthquake resistance grade is divided into an earthquake resistance grade and a non-earthquake resistance grade;
in the range of a second type of supervision plant, a first supervision area system and a second supervision area system with safety level and anti-vibration level are arranged in one sub-plant, and a first supervision area system and a second supervision area system with non-safety level and non-anti-vibration level are arranged in the other sub-plant;
in the range of the second type of control plant, a first control area system and a second control area system of a safety level and an anti-vibration level are arranged in one sub-plant, and a first control area system and a second control area system of a non-safety level and a non-anti-vibration level are arranged in the other sub-plant.
Preferably, the determining the relative position of each sub-building according to the interface relationship between each sub-building includes:
and counting the sum of the values of the connecting pipelines in unit length between different branch plants, and determining the positions of the branch plants according to the sum of the values, wherein the distance between the branch plants corresponding to the connecting pipelines with larger sum of the values is closer.
Preferably, the control area is arranged at one side of the reactor plant and is divided into a fuel plant, an auxiliary plant, a nuclear waste plant and a personnel passing plant, wherein the fuel plant and the auxiliary plant are arranged at positions close to the reactor plant and are adjacent to each other, the nuclear waste plant and the personnel passing plant are arranged at the peripheries of the fuel plant and the auxiliary plant, the nuclear waste plant is adjacent to the auxiliary plant, and the personnel passing plant is respectively adjacent to the fuel plant and the auxiliary plant; the monitoring area is arranged on the other side of the reactor plant and is opposite to the control area, and the electric plant is arranged in the monitoring area.
Preferably, the method further comprises: and S4, determining the size of the nuclear island plant.
Preferably, the size of the nuclear island plant is determined according to the arrangement volume of the internal system of each branch plant multiplied by an arrangement factor alpha; the arrangement factor alpha is 2-20.
According to another aspect of the invention, the invention provides a nuclear island plant, which adopts the technical scheme that:
a nuclear island plant comprising a reactor plant, a control zone, and a supervisory zone, wherein:
the reactor is arranged at the central position of a nuclear island plant;
the control area is arranged on one side of the reactor factory building and comprises a fuel factory building, an auxiliary factory building, a nuclear waste factory building and a passing factory building, wherein the fuel factory building and the auxiliary factory building are arranged at positions close to the reactor factory building and are adjacent to each other, and the nuclear waste factory building and the personnel passing factory building are arranged at the peripheries of the fuel factory building and the auxiliary factory building, wherein the nuclear waste factory building is adjacent to the auxiliary factory building, and the personnel passing factory building is respectively adjacent to the fuel factory building and the auxiliary factory building;
the supervision area is arranged on the other side of the reactor plant and is opposite to the control area, and an electric plant is arranged in the supervision area.
The method for planning the nuclear island plant layout can provide systematic guidance planning for the local layout of the nuclear island plants from the whole layout to the internal plants, greatly improve the rationality and economy of the nuclear island plant layout, is suitable for the nuclear island plant layout of various types of experimental or commercial nuclear facilities, especially nuclear fission type nuclear facilities, has strong feasibility, and can fundamentally improve the safety of the nuclear facilities and enhance the nuclear safety acceptance of the public.
The nuclear island plant has the advantages of reasonable layout, small structural redundancy, high coordination of internal functional areas, convenient transportation and passage, small occupied area of a radioactive protection area, low construction cost and high economy, and is suitable for various types of experiment or commercial nuclear facilities, particularly nuclear fission type experiment or commercial nuclear facilities.
Drawings
FIG. 1 is a flow chart of a method for planning nuclear island plant layout according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a nuclear island plant in the embodiment of the present invention.
In the figure: 1. a reactor plant; 2. a fuel plant; 3, an electric plant; 4. auxiliary plants; 5. a nuclear waste plant; 6. and (5) allowing personnel to pass through the plant.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or through the interconnection of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
Example 1
As shown in fig. 1, the present embodiment discloses a method for planning nuclear island plant layout, which includes the following steps S1-S4:
and S1, determining the items to be arranged in the nuclear island building and the arrangement requirements of the items.
Specifically, taking a nuclear facility of nuclear fission reaction as an example, a nuclear island factory building of the nuclear fission reactor is mainly used for arranging a system item directly related to realization of nuclear fission, a system item directly related to realization of reactivity control/core waste heat derivation/radioactive containment three safety functions, and an item related to electrical instrumentation control in the system items. In order to effectively control radioactive items, the number of items arranged in a nuclear island plant is preferably reduced as much as possible on the premise of reasonable feasibility. However, in practice, for economic reasons, even though some items may not have direct significance for implementing the safety function of the nuclear facility, the items may be considered to be arranged in the nuclear island plant during the design process of the nuclear island plant of the commercial nuclear facility. By taking the above factors into consideration, the items to be arranged in the nuclear island plant and the system to which each item belongs are determined.
In this embodiment, the system to which the items mainly arranged in the nuclear island plant belong mainly includes:
the nuclear heat conduction system is mainly used for realizing the functions of reactivity control, reactor core heat derivation and radioactive substance containment under the normal operation working condition of a reactor, and is named by different systems according to the nuclear reaction principle and the difference of reactor types;
the loading and unloading system is mainly used for realizing the functions of storing, temporarily storing, detecting and transferring new and spent fuel, loading and unloading the reactor core and the like;
the special safety facility is mainly used for realizing three safety functions of reactivity control, reactor core waste heat derivation and radioactivity containment under the working condition of a reactor accident;
the main and auxiliary systems are mainly used for realizing the functions of working medium purification, chemical reagent addition, working medium supplement, volume control and the like, and ensuring the normal operation of a nuclear heat conduction system, a material loading and unloading system, a special safety facility and other systems;
a three-waste system which is mainly used for realizing the functions of receiving, treating, storing and the like of radioactive solid, liquid and gas waste in a nuclear island factory building;
the electrical instrument control system is mainly used for providing necessary functions of information acquisition and storage, network data transmission, data analysis and diagnosis, operation control, power equipment power allocation and the like for various systems in the nuclear facility;
the public system is mainly used for providing necessary equipment cooling water, chilled water, desalted water, ventilation cooling, air purification, compressed air for instruments, public compressed air, hydrogen, nitrogen, helium and the like for various systems in the nuclear island plant so as to ensure the normal operation of the system;
other systems, such as a circulating cooling water system, a domestic sewage treatment station, a heat engine repair workshop, a chlorine production station and the like, provide necessary support systems and buildings for each process system in the nuclear facility.
In some embodiments, the determining of the placement requirement of each item in each system in step S1 includes: determining the arrangement volume of each item and determining the safety level, the earthquake-resistant level and the radioactivity control requirement of each item.
Specifically, the arrangement volume of each item is determined according to the volume of each item and the space size required by operation and maintenance; and determining the safety level, the anti-seismic level and the radioactivity control requirement of each item according to the function type of the system to which each item belongs.
And S2, dividing the nuclear island plant into a plurality of sub-plants according to the arrangement requirements of the items.
Specifically, the step S2 of dividing the nuclear island plant into a plurality of sub-plants includes:
s201, sorting the arrangement volumes of all the items in descending order, and screening out big items with the arrangement volumes sorted in the front and the sum of the arrangement volumes accounting for more than 50% -80% of the total arrangement volume;
s202, determining a topological relation between systems in a nuclear island plant according to a connection or communication relation between a system to which the large item belongs and a reactor main process system (such as a reactor coolant system), defining system levels, marking a system directly connected or communicated with the reactor main process system as a first level system, and marking a system indirectly connected or communicated with the reactor main process system through the first level system as a second level system;
and S203, independently dividing the reactor main process system into a sub-plant, recording as a reactor plant, arranging the reactor plant in the middle of the nuclear island plant, dividing the rest of sub-plants according to the radioactivity control requirement, the arrangement volume, the safety level and the earthquake resistance level of each item in the first-level system and the second-level system, and arranging the rest of sub-plants around the reactor plant.
In some embodiments, the dividing the remaining sub-factories according to the radioactivity control requirement, the arrangement volume, the safety level, and the earthquake resistance level of each item in the first and second hierarchy systems in step S203 comprises:
s2031, dividing a first hierarchy system into a first supervision area system and a first control area system according to the radioactivity control requirements of the first hierarchy system and a second hierarchy system, dividing the second hierarchy system into a second supervision area system and a second control area system, arranging the first supervision area system and the second supervision area system around a reactor plant as supervision areas, and arranging the first control area system and the second control area system around the reactor plant as control areas, namely dividing the nuclear island plant into the reactor plant, the supervision areas and the control areas;
s2032, in the supervision area, a sub-plant is separately arranged in a single system (the setting volume of the single system is not more than 50% of the total arrangement volume of each item in the nuclear island plant) with the arrangement volume exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant, and is marked as a first type supervision plant, a sub-plant is arranged in a single system with the arrangement volume not exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant according to the safety grade and the earthquake resistant grade, and is marked as a second type supervision plant, and a sub-plant is separately arranged in a single system with the arrangement volume exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant, and is marked as a third type supervision plant, arranging a single system with the volume not exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant in the second supervision area system to a second type supervision plant with the corresponding grade according to the safety grade and the earthquake-resistant grade, and/or arranging a single system with the volume exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant in the first control area system (the arrangement volume of the single system should not exceed 50% of the total arrangement volume of the first supervision area system) in a control area to be a separate plant, marking as a first type control plant, arranging a single system with the volume not exceeding 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant in the first control area system to be a separate plant according to the safety grade and the earthquake-resistant grade, and marking as a second type of control plant, independently setting a sub-plant for a single system with the arrangement volume of which exceeds 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant in the system of the second control area, marking as a third type of control plant, and combining and setting the single system with the arrangement volume of which does not exceed 10% -20% (preferably 15%) of the total arrangement volume of each item in the nuclear island plant in the system of the second control area to the second type of control plant with the corresponding level according to the safety level and the anti-seismic level.
Specifically, the safety level can be divided into a safety level and a non-safety level, and the earthquake resistance level can be divided into an earthquake resistance level and a non-earthquake resistance level; in the range of a second type of supervision plant, a first supervision area system and a second supervision area system with safety level and anti-vibration level are arranged in one sub-plant, and a first supervision area system and a second supervision area system with non-safety level and non-anti-vibration level are arranged in the other sub-plant; in the range of the second type of control plant, a first control area system and a second control area system of a safety level and an anti-vibration level are arranged in one sub-plant, and a first control area system and a second control area system of a non-safety level and a non-anti-vibration level are arranged in the other sub-plant.
And S3, determining the relative positions of the branch buildings according to the interface relation among the branch buildings.
Particularly, in the nuclear fission reaction process, each sub-factory building in the nuclear island factory building respectively bears different functions, and an electrical or mechanical interface exists between items of internal systems of different sub-factory buildings, so that the functions of each large system in the nuclear island factory building can be smoothly realized on the premise of meeting the safety requirement of the nuclear island factory building only by reasonably planning the relative position between the sub-factory buildings in the nuclear island factory building. In some embodiments, determining the relative position of each building according to the interface relationship between the sub-buildings may specifically include: arranging a reactor factory building at the middle position or the central position of a nuclear island factory building, respectively arranging a first-level system and a second-level system in sub-factories of a monitoring area and a control area around the reactor factory building according to the step S2, counting the sum of the values of unit lengths of connecting pipelines (including process pipelines, cables, ventilation pipelines and the like) among the sub-factories, the positions of the branch plants are determined according to the sum of the values of the connecting pipelines in unit length among the branch plants, wherein, the distance between the branch rooms corresponding to the connecting pipelines with larger sum of values is closer, for example, the branch room A is connected with the branch room B, C, and the sum of the values per unit length of the connecting line between a and B > the sum of the values per unit length of the connecting line between a and C, a and B are arranged as close as possible.
In this embodiment, according to the above dividing manner, the nuclear island plant may be divided into a reactor plant, a monitoring area, and a control area, as shown in fig. 2:
arranging a reactor plant in the center of a nuclear island plant, and preferably arranging a first heat conduction system in the reactor plant;
arranging a control area at one side of a reactor factory building, and dividing the control area into a fuel factory building, an auxiliary factory building, a nuclear waste factory building and a personnel passing factory building, wherein the fuel factory building and the auxiliary factory building are arranged at positions close to the reactor factory building and are adjacent to each other; arranging a nuclear waste plant and a personnel passing plant at the periphery of a fuel plant and an auxiliary plant, wherein the nuclear waste plant is adjacent to the auxiliary plant, the personnel passing plant is adjacent to the fuel plant and the auxiliary plant respectively, and arranging a three-waste system in the nuclear waste plant; arranging a supervision area on the other side of the reactor plant, opposite to the control area, arranging an electric plant in the supervision area, and arranging an electric instrument control system and a special safety facility in the electric plant. Of course, the utility systems and other systems can also be arranged in the fuel plant, not limited to the auxiliary plant, and can be adjusted according to actual conditions.
And S4, determining the size of the nuclear island buildings so as to carry out economic approximation calculation and complete detailed design of the interior of each subsequent branch building.
In this embodiment, the size of the nuclear island plant is determined by multiplying the arrangement volume of the internal system of each sub-plant by an arrangement factor α, which is preferably 2-20.
The method for planning the nuclear island plant layout in this embodiment is described in detail below, specifically as follows:
suppose that the items to be placed in a nuclear island building are as shown in table 1.
TABLE 1 items to be arranged in a nuclear island plant
As can be seen from Table 1, the sum of the arrangement volumes of the fuel-operated crane, the low-pressure switchboard 10, and the process drain surge tank or the chemical surge tank (hereinafter, the process drain flushing tank is taken as an example) which are ranked in the top order from large to small in the arrangement volumes is more than 80% of the total arrangement volume, namely the fuel-operated crane, the low-pressure switchboard 10, and the process drain buffer or chemical buffer are said large items, wherein, the system to which the fuel operation crane belongs is a reactor water pool and a spent fuel water pool cooling and processing system (RFT), the system to which the low-voltage distribution board 10 belongs is a low-voltage alternating current system (ERD), the system to which the process drainage buffer tank belongs is a waste liquid processing system (ZLT), according to the connection relationship of RFT, ERD and ZLT and a main process system of the reactor, the RFT belongs to a system at a first level, the ERD and the ZLT belong to a system at a second level, wherein: according to the radioactive control requirement, the RFT is arranged in a first control area system, the arrangement volume of the RFT is 1013, and the RFT exceeds 15% of the total arrangement volume of each item in the nuclear island plant, and the RFT is independently arranged in a sub-plant (fuel plant); according to the radioactivity control requirement, the ERD belongs to the second supervision area system, the arrangement volume of the ERD is 370%, the arrangement volume of the ERD exceeds 15% of the total arrangement volume of all the items in the nuclear island plant, the ERD is independently arranged into a sub-plant (electric plant), the ZLT belongs to the second control area system, the arrangement volume of the ZLT is 298, the arrangement volume of the ZLT exceeds 15% of the total arrangement volume of all the items in the nuclear island plant, and the ZLT is independently arranged into a sub-plant (auxiliary plant).
Furthermore, since ZLT collects waste liquid of RFT, if the value per unit length of the connection line between the two is about 100, ERD supplies power to all systems in the nuclear island plant, and if the value per unit length of the connection line (cable) between ERD and each system is about 30, that is, if the value per unit length of the connection line between ERD and RFT, ZLT is about 30, RFT and ZLT are disposed as close as possible.
The arrangement planning method for the nuclear island plant can provide systematic guidance planning for the local arrangement of the nuclear island plant from the overall arrangement to each plant inside the nuclear island plant, greatly improves the reasonability and the economical efficiency of the arrangement of the nuclear island plant, is suitable for the arrangement of the nuclear island plant of various types of experiments or commercial nuclear facilities, especially nuclear fission type experiments or commercial nuclear facilities, has extremely strong feasibility, and can fundamentally improve the safety of the nuclear facilities due to reasonable arrangement and enhance the nuclear safety acceptance degree of the public.
Example 2
As shown in fig. 2, the present embodiment discloses a nuclear island plant, which is arranged by using the arrangement planning method described in embodiment 1, and includes a reactor plant, a control area, and a supervision area, wherein:
the reactor is arranged at the central position of a nuclear island plant;
the control area is arranged on one side of the reactor factory building and comprises a fuel factory building, an auxiliary factory building, a nuclear waste factory building and a passing factory building, wherein the fuel factory building and the auxiliary factory building are arranged at positions close to the reactor factory building and are adjacent to each other; the monitoring area is arranged at the other side of the reactor factory building and is opposite to the control area, and an electric factory building is arranged in the monitoring area.
Specifically, a heat conduction system is arranged in a reactor factory building, a material loading and unloading system is arranged in a fuel factory building, a main auxiliary system, a public system and other systems are arranged in an auxiliary factory building, a three-waste system is arranged in a nuclear waste factory building, an electric instrument control system is arranged in an electric factory building, and a safety facility is specially arranged. Of course, the fuel factory building can also be provided with a public system and other systems which are not limited to be arranged in the auxiliary factory building, and the adjustment can be carried out according to actual conditions.
The nuclear island plant has the advantages of reasonable layout, small structural redundancy, high coordination of internal functional areas, convenient transportation and passage, small occupied area of a radioactive protection area, low construction cost and high economy, and is suitable for various types of experiment or commercial nuclear facilities, particularly nuclear fission type experiment or commercial nuclear facilities.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method for planning nuclear island plant layout is characterized by comprising the following steps:
s1, determining the items to be arranged in the nuclear island plant and the arrangement requirements of the items;
s2, dividing the nuclear island plant into a plurality of sub-plants according to the arrangement requirements of each item;
and S3, determining the relative positions of the branch buildings according to the interface relation among the branch buildings.
2. The method for planning nuclear island plant layout according to claim 1, wherein the step S1 of determining the layout requirement of each item includes: determining the arrangement volume of each item and determining the safety level, the earthquake resistance level and the radioactivity control requirement of each item.
3. The method for planning the nuclear island plant layout according to claim 2, wherein the layout volume of each item is determined according to the volume of each item and the space required for operation and maintenance;
and determining the safety level, the anti-seismic level and the radioactivity control requirement of each item according to the function type of the system to which each item belongs.
4. The method for planning the layout of the nuclear island plant according to claim 3, wherein the step S2 of dividing the nuclear island plant into a plurality of sub-plants comprises:
s201, sorting the arrangement volumes of all the items in descending order, and screening out big items with the arrangement volumes sorted in the front and the sum of the arrangement volumes accounting for more than 50% -80% of the total arrangement volume;
s202, determining a topological relation between systems in a nuclear island plant according to a connection relation between a system to which the large item belongs and a reactor main process system, recording a system directly connected with the reactor main process system as a first-level system, and recording a system indirectly connected with the reactor main process system through the first-level system as a second-level system;
s203, the reactor main process system is divided into a sub-plant which is marked as a reactor plant, the reactor plant is arranged in the middle of the nuclear island plant,
and dividing the rest of the branch rooms according to the radioactivity control requirement, the arrangement volume, the safety level and the earthquake resistance level of each item in the first-level system and the second-level system, and arranging the rest of the branch rooms around the reactor plant.
5. The method for planning nuclear island plant layout according to claim 4, wherein the step S203 of dividing the remaining sub-facilities according to the radioactivity control requirement, the layout volume, the safety level, and the earthquake resistance level of each item in the first and second systems comprises:
s2031, dividing the first hierarchy system into a first supervision area system and a first control area system according to the radioactivity control requirements of the first hierarchy system and the second hierarchy system, dividing the second hierarchy system into a second supervision area system and a second control area system, arranging the first supervision area system and the second supervision area system around a reactor plant as supervision areas, and arranging the first control area system and the second control area system around the reactor plant as control areas;
s2032, in the supervision area, a branch factory building is separately arranged in a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the first supervision area system, the branch factory building is marked as a first class supervision factory building, a branch factory building is arranged in a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the first supervision area system according to the safety class and the anti-seismic class, the branch factory building is marked as a second class supervision factory building, a branch factory building is separately arranged in a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the second supervision area system, the branch factory building is marked as a third class supervision factory building, a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island factory building in the second supervision area system is merged and arranged in a second class supervision factory building with the corresponding class according to the safety class and the anti-seismic class, and/or the presence of a gas in the gas,
in the control area, a single system with the arrangement volume exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in a system of the first control area is independently provided with a sub-plant and is marked as a first type of control plant, a single system with the arrangement volume not exceeding 10% -20% of the total arrangement volume of each item in the nuclear island plant in the system of the first control area is provided with the sub-plant according to the safety level and the anti-seismic level and is marked as a second type of control plant, and a single system with the layout volume exceeding 10% -20% of the total layout volume of all the items in the nuclear island plant in the system of the second control area is independently provided with a sub-plant and is marked as a third type of control plant, and the single system with the layout volume not exceeding 10% -20% of the total layout volume of all the items in the nuclear island plant in the system of the second control area is combined and arranged to the second type of control plant with the corresponding level according to the safety level and the anti-seismic level.
6. The method for nuclear island plant layout planning according to claim 5, wherein the safety level is divided into a safety level and a non-safety level, and the earthquake resistance level is divided into an earthquake resistance level and a non-earthquake resistance level;
in the range of a second type of supervision plant, a first supervision area system and a second supervision area system with safety level and anti-vibration level are arranged in one sub-plant, and a first supervision area system and a second supervision area system with non-safety level and non-anti-vibration level are arranged in the other sub-plant;
in the range of the second type of control plant, a first control area system and a second control area system of a safety level and an anti-vibration level are arranged in one sub-plant, and a first control area system and a second control area system of a non-safety level and a non-anti-vibration level are arranged in the other sub-plant.
7. The method for planning the nuclear island plant layout according to claim 6, wherein the determining the relative position of each sub-plant according to the interface relationship between each sub-plant comprises:
and counting the sum of the values of the connecting pipelines in unit length among the branch plants, and determining the positions among the branch plants according to the sum of the values, wherein the distance between the branch plants corresponding to the connecting pipelines with larger sum of the values is closer.
8. The method for nuclear island plant layout planning according to claim 7,
the control area is arranged at one side of the reactor building and is divided into a fuel building, an auxiliary building, a nuclear waste building and a personnel passage building, wherein,
the fuel factory building and the auxiliary factory building are arranged at the position close to the reactor factory building and are adjacent to each other,
arranging a nuclear waste plant and a personnel passing plant at the periphery of the fuel plant and the auxiliary plant, wherein the nuclear waste plant is adjacent to the auxiliary plant, and the personnel passing plant is adjacent to the fuel plant and the auxiliary plant respectively;
the monitoring area is arranged on the other side of the reactor plant and is opposite to the control area, and the electric plant is arranged in the monitoring area.
9. The method for nuclear island plant layout planning according to any one of claims 2-8, further comprising: s4, determining the scale of the nuclear island plant;
the plant scale is determined according to the arrangement volume of the internal system of each sub-plant multiplied by an arrangement factor alpha, and the arrangement factor alpha is 2-20.
10. A nuclear island plant is characterized by comprising a reactor plant, a control area and a supervision area,
the reactor is arranged at the central position of a nuclear island plant;
the control area is arranged on one side of the reactor factory building and comprises a fuel factory building, an auxiliary factory building, a nuclear waste factory building and a passing factory building, wherein the fuel factory building and the auxiliary factory building are arranged at positions close to the reactor factory building and are adjacent to each other, and the nuclear waste factory building and the personnel passing factory building are arranged at the peripheries of the fuel factory building and the auxiliary factory building, wherein the nuclear waste factory building is adjacent to the auxiliary factory building, and the personnel passing factory building is respectively adjacent to the fuel factory building and the auxiliary factory building;
the supervision area is arranged on the other side of the reactor plant and is opposite to the control area, and an electric plant is arranged in the supervision area.
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| 刘文学等: "《百万千瓦级核电站核岛总体布置研究》", 《核工程研究与设计》, pages 1 - 4 * |
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