JP2002062394A - Air-conditioning equipment of fast reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning equipment of a fast reactor capable of surely disturbing flow out of sodium aerosol to other partition even in coolant leakage accidents. SOLUTION: In an air-conditioning equipment of fast reactor, independent air-conditioning equipment is provided in a secondary main cooling section and a secondary auxiliary section. In normal time and in coolant leakage accident time, the main section has no possibility that blowout piece and suction piece of the air-conditioning equipment connect with other section, and even in the failure of the air-conditioning equipment in leakage accidents it has no possibility of connecting with other section and so flow out of the sodium aerosol can be suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a secondary cooling system for a fast reactor plant using sodium as a coolant.
The present invention relates to a ventilation and air conditioning system for a fast reactor when divided into a section containing a secondary main cooling system facility and a section containing a secondary auxiliary sodium system facility.

[0002]

2. Description of the Related Art FIG. 7 is a conventional configuration diagram of a fast reactor plant and a ventilation and air conditioning system in which a liquid metal sodium loop is divided and installed in a plurality of sections. In FIG. 7, the fast reactor plant has a secondary main cooling system facility including a steam generator 52, a circulation pump 53, and a cooling system pipe 54 connecting them.
A secondary cooling system including a secondary auxiliary sodium system including a drain system 55 and a purification system 56 is installed in a secondary cooling system area 59 of a fast reactor plant in an air atmosphere, and a secondary main cooling is performed. System equipment and the secondary auxiliary sodium system equipment are the secondary main cooling system section 57 and the secondary auxiliary system section 5, respectively.
8 and is installed. Secondary main cooling system section 5
Airtight compartmentalized facilities 51 are installed in all the openings that connect the 7 and the secondary auxiliary system section 58, and each section is configured to be an independent section.

Next, a conventional ventilating air-conditioning system in such a fast reactor plant will be described. One system of ventilation air-conditioning equipment including an air supply filter 40, an air supply fan 41, an exhaust fan 44, an air supply duct 43, and an exhaust duct 45 is provided. The air supply filter 40 and the air supply fan 41 are installed outside the secondary cooling system area 59, and the exhaust fan 44 is installed inside the secondary main cooling system section 57. Air supply duct 42
An air supply duct fire damper 43 and an exhaust duct fire damper 46 are installed in the secondary cooling system area 59 through the exhaust duct 45. Non-return dampers 47 that are opened when the inside of the air supply duct 42 is in a positive pressure state are provided at all of the outlets of the air supply duct 42, and all of the suction ports of the exhaust duct 45 are Is provided with a check damper 48 which is opened when is in a negative pressure state. Further, a pressure relief line 49 branches off from the exhaust duct 45, and a pressure release damper 50 is installed at the tip, and the end is opened to the atmosphere. The exhaust fan 44, the air supply duct 42, the exhaust duct 45, the air supply duct check damper 47, the exhaust duct check damper 48, and the pressure relief line 49 installed in the secondary main cooling system section 57 have a coolant leakage accident. It is made of a material (such as steel plate) that has the strength to withstand the rise in room temperature and pressure at the time.

First, the operation of the ventilation and air-conditioning equipment having the above configuration will be described. Normally, the outside air sucked into the air supply fan 41 via the air supply filter 40 is supplied to the air supply duct 42.
Is transported to each section and supplied from the outlet. Further, the room air sucked from the suction port of the exhaust duct 45 of each section by the exhaust fan 44 is exhausted to the outside of the section.

Since the air supply duct check damper 47 and the air supply duct 42 have a positive pressure higher than the atmospheric pressure in the compartment during normal times, they are opened to the outside of the room to secure the air supply opening. Further, the exhaust duct check non-return damper 48 in a normal state is opened to the inside of the duct because the exhaust duct 45 has a negative pressure higher than the atmospheric pressure in the compartment to secure an exhaust opening.

[0006] Next, the operation of the ventilation air-conditioning equipment in the event of a coolant leakage accident will be described. In the event of a coolant leak accident, sodium aerosol is generated by the sodium fire and the pressure in the leak compartment increases. If a coolant leak accident occurs in the secondary main cooling system section 57, the pressure in the air supply duct 42 becomes higher than the pressure in the secondary main cooling system section 57, and the air supply duct check damper 47 closes. Therefore, the sodium aerosol does not flow out to the secondary auxiliary system section 58 through the air supply duct 42. Further, the sodium aerosol flows into the exhaust duct 45 because the pressure in the secondary main cooling system section 57 is higher than the pressure in the exhaust duct 45, but at the same time, the sodium aerosol is exhausted more than the pressure in the secondary auxiliary system section 58. Since the pressure inside the duct 45 increases, the exhaust duct check damper 48 installed in the secondary auxiliary system section 58 closes, so that sodium aerosol does not flow out to the secondary auxiliary system section 58 via the exhaust duct 45. The sodium aerosol is prevented from flowing out of the secondary cooling system area 59 by stopping the operation of the air supply fan 41 and the exhaust fan 44 and closing the air supply duct fire damper 43 and the exhaust duct fire damper 46. When the pressure in the leaking section rises to such an extent that the strength of the building constituting the section is affected, the pressure relief damper 50 installed in the pressure relief line 49 installed in the exhaust duct 45 is opened to release the pressure to the atmosphere. I do.

[0007]

However, in order to suppress the diffusion of aerosol to other compartments in the event of a coolant leakage accident, the air supply duct 42 and the exhaust duct 45 installed in the compartment must be separated from the compartment in the event of a leakage accident. It is necessary to maintain the boundary function without breaking due to the temperature rise and pressure rise occurring in the inside, and it is necessary to use a steel sheet duct with heat resistance and pressure resistance instead of a normal zinc sheet duct There was a problem of inviting a rise.

[0008] Further, the supply duct check non-return damper 47 and the exhaust duct check non-return damper 48 can be reliably closed even if they receive a temperature rise and a pressure rise in the compartment at the time of a leak accident. There is a problem that a special check damper must be developed, which is a condition of suppression and guarantees the closing operation under a high temperature and high pressure environment at the time of an accident.

The present invention has been made in view of the above circumstances, and has a function of reliably preventing sodium aerosol from flowing out to another section even in the event of a coolant leakage accident, and also has a function of suppressing a rise in cost. The purpose of the present invention is to provide a ventilation air conditioning system.

[0010]

According to a first aspect of the present invention, there is provided a secondary main cooling system section including a secondary main cooling system facility comprising a steam generator, a circulating pump, and a cooling system pipe connecting them.
A secondary auxiliary system section including a secondary auxiliary sodium-based facility including a drain facility for liquid metal sodium as a coolant contained in the secondary main cooling system and a purification system, a secondary main cooling system section, and 2 In a ventilating air conditioner of a fast reactor having a partitioning facility in which a secondary auxiliary compartment is separated by an airtight partition, the secondary main cooling system compartment includes a first air supply fan, a first air supply duct, and a first exhaust gas. 2 consisting of fan and first exhaust duct
A secondary main cooling system section ventilation device is provided, and a secondary auxiliary system section includes a second auxiliary filter including a second air supply filter, a second air supply fan, a second air supply duct, a second exhaust fan, and a second exhaust duct. It is characterized by providing compartment ventilation equipment.

According to the first aspect of the present invention, an independent ventilation and air-conditioning system is provided for each section, and in normal times and in the event of a coolant leakage accident, another air-conditioning system is provided via the outlet or the suction port of the ventilation and air-conditioning system. No communication with other compartments, and even if the ventilation / air-conditioning equipment in the relevant compartment is damaged in the event of a leak, it will not conduct to other compartments, so that the outflow of sodium aerosol can be suppressed and the ventilation and air-conditioning Can be made of material.

According to a second aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to the first aspect, a fire prevention damper is provided in a duct at a boundary between the sections, and an air supply fan and an exhaust fan of the ventilation facility of the secondary auxiliary section are provided. Is provided in the secondary auxiliary system section.

According to the second aspect of the present invention, even if the air supply fan and the exhaust fan are damaged at the time of a coolant leakage accident, the function of suppressing the outflow of sodium aerosol is not affected, so that the air supply fan made of a normal material is used. And the exhaust fan can be installed in the compartment, and the degree of freedom of the installation location of the air supply fan and the exhaust fan can be increased.

According to a third aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to the second aspect, an air cooler is provided in which a supply port of the ventilation system in the secondary auxiliary system section is adjacent to the secondary main cooling system section. It is characterized in that a secondary auxiliary system section air supply filter is unnecessary in the chamber.

According to the third aspect of the present invention, the ventilation air-conditioning equipment in the section adjacent to the room having the air supply filter facing the outer wall has the air supply port provided in the room having the air supply filter. The air supply filter of the equipment can be eliminated.

According to a fourth aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to any one of the first to third aspects, the second air supply is provided before the second air supply fan in the secondary auxiliary system section. A cooling coil is provided.

According to the fourth aspect of the present invention, since the air supply cooling coil is provided between the air supply filter and the air supply fan, the air supply air volume is reduced by lowering the air supply temperature and the air supply fan is reduced. And the air supply duct can be made thinner.

According to a fifth aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to any one of the first to fourth aspects, two secondary auxiliary system cooling ducts are integrated into one system, and a surplus is provided. The main body penetrating part to be used is a penetrating part of the supply / exhaust duct of the secondary auxiliary system section ventilation equipment.

According to the fifth aspect of the present invention, a part of the air supply filter, the air supply duct and the exhaust duct of the ventilation air-conditioning equipment of the section having the air cooling equipment attached to the circulation loop is also used as the air cooling equipment. Therefore, the quantity of the air supply filter, the air supply duct, and the exhaust duct can be reduced.

According to a sixth aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to any one of the first to fifth aspects, a pressure relief line is provided for each of the secondary main cooling system section and the secondary auxiliary system section. Is provided.

According to the sixth aspect of the present invention, since an independent pressure release line is provided for each section, the amount of the pressure release line can be reduced by installing the pressure release line at the shortest distance from each section. it can.

According to a seventh aspect of the present invention, in the ventilation and air-conditioning system for a fast furnace according to the sixth aspect, a plurality of pressure relief lines in the secondary main cooling system section are provided on a ceiling hatch of the secondary main cooling system room. Of at least one of the blowout panels, the open setting value of at least one blowout panel is changed from the pressure release value at the time of steam pipe breakage to the pressure release value at the time of a coolant leak accident.

According to the seventh aspect of the present invention, the pressure relief line in the section where the steam / water supply pipe is installed is shared with at least one blowout panel, so that a pressure relief damper is not required. be able to.

According to an eighth aspect of the present invention, in the ventilation and air-conditioning system for a fast reactor according to the sixth aspect, a pressure relief damper is provided in a pressure relief line of the secondary auxiliary system section, and the pressure is automatically controlled by a pressure at the time of a coolant leakage accident. The pressure is released from the pressure release damper to the atmosphere outside the compartment via the secondary auxiliary cooling duct.

According to the eighth aspect of the present invention, the pressure relief line of the section provided with the air cooling equipment provided in association with the circulation loop is provided with a pressure release damper in the exhaust line of the air cooling equipment opened to the outside air. Since it is provided, a dedicated pressure release line can be dispensed with.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a fast reactor plant and a ventilation air-conditioning system according to a first embodiment (corresponding to claims 1 and 6) of the present invention.

In FIG. 1, the fast reactor plant includes a secondary main cooling system including a steam generator 19, a circulating pump 20, and a cooling system pipe 21 connecting the steam generator 19 and a drain system 22 and a purification system 23. A secondary cooling system including secondary auxiliary sodium-based equipment is installed in the secondary cooling system area 27 of the fast reactor plant in an air atmosphere, and the secondary main cooling system and the secondary auxiliary sodium-based equipment are each 2 units. It is divided and installed in a secondary main cooling system section 24 and a secondary auxiliary system section 25.

Next, the configuration of the ventilation and air conditioning equipment in such a fast reactor plant will be described. In this embodiment, two ventilation air conditioning systems are installed, and the first ventilation air conditioning system includes a first air supply filter 1, a first air supply fan 2, a first exhaust fan 5, a first air supply duct 3, and a first air supply duct 3. The first air supply filter 1 and the first air supply fan 2 are installed outside the secondary cooling system area 27, and the first air supply filter 1 and the first air supply fan 2
The air supply duct 3 and the first exhaust duct 6 are connected to the secondary main cooling system section 2.
4. The second ventilation air-conditioning equipment includes a second air supply filter 8, a second air supply fan 9, a second exhaust fan 12, a second air supply duct 10, and a second exhaust duct 13,
The second air supply filter 8, the second air supply fan 9, and the second exhaust fan 12 are installed outside the secondary cooling system area 27,
The second air supply duct 10 and the second exhaust duct 13 are arranged in the secondary auxiliary system section 25. The first air supply duct 3 and the first
A first supply duct fire damper 4 and a first exhaust duct fire damper 7 are installed in the secondary cooling system area 27 penetrating portion of the exhaust duct 6, and two of the second supply duct 10 and the second exhaust duct 13 are provided. A second air supply duct fire damper 11 and a second exhaust duct fire damper 14 are installed in the penetration part of the next cooling system area 27. And the 1st ventilation air-conditioning equipment and the 2nd ventilation air-conditioning equipment are manufactured with the material used by normal general industry.

Further, a first pressure relief line 15 is provided for communicating from the secondary main cooling system section 24 to the atmosphere outside the secondary cooling system area 27, and a constant pressure is provided at the tip of the first pressure relief line 15. The first pressure release damper 1 to be opened as described above
6 are provided. In addition, secondary auxiliary system section 25 to 2
A second pressure relief line 17 communicating with the atmosphere outside the secondary cooling system area 27 is provided, and a second pressure relief line 1 is provided.
A second pressure release damper 18 that opens at a pressure equal to or higher than a predetermined pressure is provided at the tip of the pressure sensor 7.

Next, the operation of the ventilation and air-conditioning equipment having the above-described configuration will be described. The operation of ventilation and air conditioning equipment during normal
The following describes an example of the ventilation air-conditioning equipment. Outside air drawn into the first air supply fan 2 via the first air supply filter 1 is conveyed to the secondary main cooling system area 24 through the first air supply duct 3, Air is supplied from the outlet.
Further, the room air sucked from the suction port of the first exhaust duct 6 of the secondary main cooling system section 24 by the first exhaust fan 5 is exhausted to the outside of the secondary cooling system area 27.

Next, the operation of the ventilation air-conditioning equipment in the event of a coolant leakage accident will be described. If a coolant leak accident occurs in the secondary main cooling system section 24 and the pressure in the room rises, the first air supply duct fire damper 4 and the first exhaust duct fire damper 7 are closed to perform secondary cooling. Outflow of sodium aerosol outside the system area 27 and to the secondary auxiliary system section 25 is suppressed. At this time, even if the duct and the equipment of the first ventilation and air-conditioning equipment are damaged by a rise in temperature or a rise in pressure, the effect of suppressing the outflow of sodium aerosol is not affected. However, if the sodium fire due to the leaked coolant continues, the pressure in the secondary cooling system section 24 further increases, which affects the soundness of the concrete structure constituting the secondary cooling system section 24. When the pressure in the section 24 becomes equal to or higher than a predetermined pressure, the first pressure release damper 16 is released to release the pressure to the atmosphere.

Similarly, when a coolant leaks in the secondary auxiliary system section 25, the sodium aerosol is closed by closing the air supply duct fire damper 11 and the exhaust duct fire damper 14 of the second ventilation air conditioning equipment. Outflow is suppressed.

According to the present embodiment, since the equipment or duct of the ventilation and air conditioning equipment does not form the boundary of the section,
There is no need to make the ventilation and air conditioning equipment heat and pressure resistant, and there is no need to install non-return dampers at the outlet of the air supply duct and the suction port of the exhaust duct, greatly reducing the cost of the ventilation and air conditioning equipment. be able to.

FIG. 2 is a configuration diagram of a fast reactor plant and a ventilation air conditioning system according to a second embodiment (corresponding to claim 2) of the present invention. The second ventilation air conditioning system according to the first embodiment is an example. Is shown. In FIG. 2, in the present embodiment, a description will be given of a second ventilation / air-conditioning facility as an example, in which two ventilation / air-conditioning facilities are installed.

In this embodiment, the second ventilation air-conditioning equipment comprises a second air supply filter 8, a second air supply fan 9, a second air exhaust fan 12, a second air supply duct 10, and a second air exhaust duct 13. The second air supply filter 8 is installed outside the secondary cooling system area 27, and the second air supply fan 9, the second exhaust fan 12, the second air supply duct 10, and the second exhaust duct 13
It is arranged in the next auxiliary system section 25. A second air supply duct fire damper 11 and a second air duct fire damper 14 are provided in the second air supply duct 10 and the second exhaust duct 13 at the portion where the secondary cooling system area 27 penetrates.

A second pressure relief line 1 communicating from the secondary auxiliary system section 25 to the atmosphere outside the secondary cooling system area 27
7, a second pressure release damper 18 that opens at a tip of the second pressure relief line 17 at a certain pressure or higher.
Is provided. The second ventilation air-conditioning equipment is made of a material used in ordinary general industries.

According to the present embodiment, when a coolant leakage accident occurs in the secondary auxiliary system section 25, the second air supply duct fire damper 11 and the second exhaust duct fire damper 14 are closed to reduce the sodium leakage. Aerosol is secondary auxiliary compartment 25
No more spills out. For this reason, the second air supply fan 9 made of a material used in ordinary general industries is used.
Even if the second exhaust fan 12 and the second exhaust fan 12 are damaged due to a rise in pressure and a rise in temperature due to a coolant leakage accident, the function of suppressing the outflow of sodium aerosol is not affected. For this reason, if the second air supply fan 9 and the second exhaust fan 12 are installed in the secondary auxiliary system section 25, there is no need to secure an installation space for these devices outside the secondary cooling system area 27, and high speed Furnace plant can be reduced in size.

FIG. 3 is a block diagram of a fast reactor plant and a ventilation and air conditioning system according to a third embodiment (corresponding to claim 3) of the present invention. The second ventilation and air conditioning system in the third embodiment is an example. Is shown. In FIG. 3, in the present embodiment, the second ventilation air conditioning system is installed in two systems.
The following describes an example of the ventilation air-conditioning equipment.

In this embodiment, the second ventilation air-conditioning equipment comprises a second air supply fan 9, a second air exhaust fan 12, a second air supply duct 10 and a second air exhaust duct 13, and the second air supply fan 9 The second exhaust fan 12, the second air supply duct 10, and the second
The exhaust duct 13 is arranged in the secondary auxiliary system section 25.

An outside air atmosphere compartment 29 having an air supply filter 28 on the wall facing the outside air adjacent to the secondary auxiliary system compartment 25
Is provided. One end of the second air supply duct 10 communicates with the outside air atmosphere section 29, and the second air supply duct fire damper 11 is installed at a portion penetrating the boundary with the outside air atmosphere section 29. A second exhaust duct fire damper 14 is installed in the secondary cooling system area penetrating portion. A second pressure relief line 17 communicating from the secondary auxiliary system section 25 to the atmosphere outside the secondary cooling system area 27 is provided, and at the end of the second pressure relief line 17 is released a pressure above a certain pressure. A damper 18 is provided.
The second ventilation air-conditioning equipment is made of a material used in ordinary general industries.

According to the present embodiment, the secondary auxiliary system section 2
The supply air to 5 can supply outside air processed by the air supply filter 28 of the outside air atmosphere section 29 which is an air cooling chamber for removing reactor decay heat adjacent to the secondary auxiliary system section. The second ventilation air conditioning equipment does not require an air supply filter. Further, when the outside air atmosphere section is adjacent to the secondary main cooling system section, the same form can be taken, so that the air supply filter is not required in the first ventilation air conditioning equipment.

FIG. 4 is a configuration diagram of a fast reactor plant and a ventilation and air conditioning system according to a fourth embodiment (corresponding to claim 4) of the present invention. The second ventilation and air conditioning system according to the fourth embodiment is an example. Is shown. In FIG. 4, in the present embodiment, of the two systems of the ventilation air conditioning system,
The following describes an example of the ventilation air-conditioning equipment.

In this embodiment, the second ventilation air-conditioning equipment includes a second air supply filter 8, a second air supply cooling coil 30, a second air supply fan 9, a second exhaust fan 12, a second air supply duct 10, The second air supply filter 8 includes a second exhaust duct 13.
And the second air supply cooling coil 30 are installed outside the secondary cooling system area 27, and the second air supply fan 9, the second exhaust fan 12, the second air supply duct 10, and the second exhaust duct 13 It is arranged in the next auxiliary system section 25. Second air supply duct 1
A second air supply duct fire damper 11 and a second exhaust duct fire damper 14 are installed in the secondary cooling system area penetrating portions of the first and second exhaust ducts 13. Secondary auxiliary system section 25-2
A second pressure relief line 17 communicating with the atmosphere outside the secondary cooling system area 27 is provided, and a second pressure relief line 1 is provided.
A pressure release damper 18 that opens at a pressure equal to or higher than a certain pressure is provided at the tip of 7. Cooling water supplied from a cooling water producing device (not shown) circulates in the coil of the second air supply cooling coil 30. The second ventilation air-conditioning equipment is made of a material used in ordinary general industries.

According to the present embodiment, it is possible to reduce the temperature of the outside air drawn into the first air supply fan and the second air supply fan, so that the temperature difference between the equipment to be heat-removed and the air supply temperature is reduced. And the same amount of heat removal can be secured with a small amount of air, so that the amount of air can be reduced, the size of the second air supply fan can be reduced, and the cross-sectional area of the second air supply duct can be reduced. The quantity of the ventilation and air-conditioning equipment can be reduced. Similarly, if a first cooling coil (not shown) is installed in the first ventilation equipment, a similar configuration can be obtained. In the first ventilation air-conditioning equipment, the first air supply fan can be downsized. The cross-sectional area of the first air supply duct can be reduced, and the amount of the first ventilation and air conditioning equipment can be reduced.

FIG. 5 is a block diagram of a fast reactor plant and a ventilation and air conditioning system according to a fifth embodiment (corresponding to claims 5, 6, and 8) of the present invention. The structure of the 2nd ventilation air conditioning equipment is shown. In FIG.
In the present embodiment, the configuration of the second ventilation and air-conditioning equipment will be described in which two systems of the ventilation and air-conditioning equipment are installed.

In the present embodiment, the purifying system equipment 23 installed in the secondary auxiliary system section 25 includes a purifying system air supply filter 31, a purifying system air supply fan 32, and a purifying system air supply fan 32 for cooling the purifying system equipment. A purifying system cooling system including an air duct 33 and a purifying system exhaust duct 34 is provided.
The outside air sucked from the purifying system air supply filter 31 by the purifier 2 is supplied to the purifying system equipment 23 to cool the equipment, and then is discharged through the purifying system exhaust duct 34 to the outside of the secondary cooling system area 27. Since the pressure loss when cooling the purification system equipment 23 is high, the outside air is supplied and exhausted at a high pressure because of the high pressure loss, so the purification system cooling equipment is made of steel, and the cooling generated in the secondary auxiliary system section 25 There is no damage due to the pressure rise and temperature rise due to the material leakage accident.

The second ventilation and air-conditioning equipment comprises a second air supply fan 9, a second air exhaust fan 12, a second air supply duct 10 and a second air exhaust duct 13, and the second air supply fan 9 and the second air exhaust fan 12 The second air supply duct 10 and the second exhaust duct 13 are disposed in the secondary auxiliary system section 25. Second air supply duct 1
One end of the second exhaust duct 13 is connected to a purification system air supply duct 33, and a second air supply duct fire prevention damper 11 is installed at an interface with the purification system air supply duct.
The second air supply duct fire damper 1
First and second exhaust duct fire dampers 14 are provided.
A second pressure relief line 17 is provided in a purifying system exhaust duct 34 that communicates from the secondary auxiliary system section 25 to the atmosphere outside the secondary cooling system area 27. One end of the second pressure relief line 17 has a constant pressure. The pressure release damper 18 released by the above
Is provided.

According to the present embodiment, the air supply to the secondary auxiliary system section can supply the outside air filtered by the purification system air supply filter. An air filter is not required, and a part of the purification system air supply duct can be partially used as an air supply duct of the second ventilation air conditioning equipment. In addition, since the second pressure relief line also serves as a purification system exhaust duct, it is possible to reduce the number of penetrations and reduce the amount of the second ventilation air conditioning equipment.

FIG. 6 is a configuration diagram of a fast reactor plant and a ventilation and air conditioning system according to a seventh embodiment (corresponding to claim 7) of the present invention. The configuration of the first ventilation and air conditioning system in the seventh embodiment is shown. Is shown. In FIG. 6, the configuration of the first ventilating air-conditioning system of the present embodiment, of which two systems are installed, will be described.

In this embodiment, the steam pipe (not shown) and the water supply pipe (not shown) connected to the steam generator 19 installed in the secondary main cooling system section 24 of the fast reactor plant are broken and When the pressure in the secondary cooling system area 27 rises, a plurality of blowout panels 35 that release the secondary main cooling system section 24 to the atmosphere at a certain pressure or higher also serve as a first pressure release damper. The first ventilation air-conditioning equipment installed in the secondary cooling system section 24 includes a first air supply filter 1, a first air supply fan 2, a first air exhaust fan 5, a first air supply duct 3, and a first air exhaust duct. 6, the first air supply filter 1 and the first air supply filter 1.
The air supply fan 2 is installed outside the secondary cooling system area 27,
The first exhaust fan 5, the first air supply duct 3, and the first exhaust duct 6 are disposed in the secondary main cooling system section 24. A first supply duct fire damper 4 and a first exhaust duct fire damper 7 are provided in the secondary cooling system area penetrating portions of the first supply duct 3 and the first exhaust duct 6. The first ventilation air-conditioning equipment is made of a material used in ordinary general industries.

Next, the operation of the ventilation and air-conditioning equipment having the above-described configuration will be described. The blowout panel 35 is provided to prevent a pressure increase in the secondary main cooling system section 24 when a steam pipe or a water supply pipe breaks in the secondary main cooling system section 24. Since the indoor pressure of the secondary main cooling system section 24 increases even in the event of an accident, the blowout panels having a plurality of units are set to the lower of the indoor pressure at the time of high-pressure steam leakage or the indoor pressure at the time of coolant leakage. It is possible to share.

According to this embodiment, since the pressure release line can be shared with the blowout panel, it is not necessary to install a new pressure release line, and the amount of the first ventilation and air conditioning equipment can be reduced.

[0053]

As described above, according to the present invention,
It is possible to control the outflow of sodium aerosol out of the compartment caused by a coolant leakage accident by using a ventilation air-conditioning system composed of materials used for ordinary ventilation air-conditioning system. It is possible to provide a ventilation and air conditioning system for a fast reactor, which does not require a check damper for which operation is required.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a fast reactor plant and a ventilation air conditioning system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a fast reactor plant and a ventilation and air conditioning system according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a fast reactor plant and a ventilation air conditioning system according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a fast reactor plant and a ventilation and air conditioning system according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a fast reactor plant and a ventilation air conditioning system according to a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram of a fast reactor plant and a ventilation and air conditioning system according to a sixth embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional fast reactor plant and ventilation air conditioning equipment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st air supply filter, 2 ... 1st air supply fan, 3 ... 1st
Air supply duct, 4 ... First air supply duct fire damper, 5 ... First
Exhaust fan, 6 First exhaust duct, 7 First exhaust duct fire damper, 8 Second air supply filter, 9 Second air supply fan, 10 Second air supply duct, 11 Second air supply duct Fire damper, 12 second exhaust fan, 13 second exhaust duct, 14 second exhaust duct fire damper, 15 first pressure relief line, 16 first pressure release damper, 17 second
Pressure relief line, 18 ... second pressure release damper, 19 ...
Steam generator, 20: circulation pump, 21: cooling system piping, 2
2 ... Drain facility, 23 ... Purification system facility, 24 ... Secondary main cooling system section, 25 ... Secondary auxiliary system section, 26 ... Partitioning facility, 2
7: secondary main cooling system area, 28: air supply filter, 29 ...
Outside air atmosphere section, 30: second supply cooling coil, 31: purification system supply filter, 32: purification system supply fan, 33: purification system supply duct, 34: purification system exhaust duct, 35: blowout panel, 40 air supply filter, 41 air supply fan, 42 air supply duct, 43 air supply duct fire damper,
44 ... exhaust fan, 45 ... exhaust duct, 46 ... exhaust duct fire prevention damper, 47 ... air supply duct check damper, 48 ... exhaust duct check damper, 49 ... pressure relief line, 50 ...
Pressure relief damper, 51 ... compartmental equipment, 52 ... steam generator, 53 ... circulation pump, 54 ... cooling system piping, 55 ... drain equipment, 56 ... purification equipment, 57 ... secondary main cooling system compartment, 5
8 ... Secondary auxiliary system section, 59 ... Secondary cooling system area.

Continued on the front page (72) Inventor Kunio Shimano 8th Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture F-term in Toshiba Yokohama Office (reference) 2G002 AA05 BA01 CA04 DA05 EA10 3L058 BE08

Claims (8)

[Claims] 1. A secondary main cooling system including a steam generator, a circulation pump, and a cooling system pipe connecting the steam generator and the circulation pump.
A secondary main cooling system section, a secondary auxiliary system section including a secondary auxiliary sodium system facility including a drain facility and a purification system facility for liquid metal sodium as a coolant included in the secondary main cooling system facility, In a ventilating air conditioner for a fast reactor having a partitioning facility in which a secondary main cooling system section and a secondary auxiliary system section are separated by an airtight partition, the secondary main cooling system section includes a first air supply fan and a first air supply fan. A secondary main cooling system section ventilation device including an air supply duct, a first exhaust fan, and a first exhaust duct is provided, and a second air supply filter, a second air supply fan, and a second air supply duct are provided in a secondary auxiliary system section. And a secondary auxiliary ventilation system comprising a second exhaust fan and a second exhaust duct. 2. The ventilation and air-conditioning equipment for a fast reactor according to claim 1, wherein a fire damper is provided in a duct at a boundary of the division, and a supply fan and an exhaust fan of the ventilation equipment of the secondary auxiliary division are connected to the secondary auxiliary division. Ventilation and air-conditioning equipment for fast reactors, which is installed inside. 3. The ventilation and air-conditioning equipment for a fast reactor according to claim 2, wherein the air supply port of the ventilation equipment in the secondary auxiliary system section is provided in an air cooler room adjacent to the secondary main cooling system section. Ventilation and air-conditioning equipment for a fast reactor characterized by eliminating the need for an auxiliary system section air supply filter. 4. The ventilation and air conditioning system for a fast reactor according to claim 1, wherein a second air supply cooling coil is provided before the second air supply fan in the secondary auxiliary system section. Ventilation and air conditioning equipment for fast reactors. 5. The ventilation and air-conditioning system for a fast reactor according to claim 1, wherein two secondary auxiliary system cooling ducts are integrated into one system, and a surplus skeleton penetrating portion is provided by two systems. Ventilation and air-conditioning equipment for fast reactors, characterized in that it is a part of the air supply / exhaust duct of the auxiliary ventilation system. 6. The ventilation and air-conditioning system for a fast reactor according to claim 1, wherein a pressure relief line is provided in each of the secondary main cooling system section and the secondary auxiliary system section. Ventilation and air conditioning equipment for fast reactors. 7. The ventilation and air-conditioning system for a fast reactor according to claim 6, wherein the pressure relief line of the secondary main cooling system section is one of a plurality of blowout panels provided in a ceiling hatch of the secondary main cooling system room. Ventilating air-conditioning equipment for a fast reactor, wherein the opening setting value of at least one blowout panel is changed from the pressure releasing value at the time of steam pipe breakage to the pressure releasing value at the time of a coolant leak accident. 8. The pressure relief damper according to claim 6, wherein a pressure relief damper is provided in a pressure relief line of the secondary auxiliary system section, and the pressure relief damper is automatically released by a pressure at the time of a coolant leakage accident. A ventilating air-conditioning system for a fast reactor, wherein pressure is released to the atmosphere outside the compartment through a secondary auxiliary cooling duct.