JPH1184056A - Reactor container cooling facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the soundness of a reactor container by reducing the size of a reactor container cooling facility by reducing the quantity of the steam which is generated when an LOCA(loss of coolant accident) occurs in a coolant pool and discharged to the air. SOLUTION: Heat radiating members 30 made of steel, etc., are arranged on the external walls 21 and 22 of a coolant pool 6 which is provided above a core cooling system pool connected with a reactor pressure vessel through coolant piping and a check valve and provided with a heat exchanger 7 composed of a steam chamber 8 communicated with a dry well, a water chamber 10 communicated with the core cooling system pool and a pressure suppressing pool, and heat-transfer pipes 9 which connect the chambers 10 and 8 to each other so that the members 30 may be exposed to the external space of a reactor container and the surfaces of the members 30 are formed in curved surfaces 30a having recessing and projecting sections. Besides the one shown in the figure, the members 30 may be provided on the roof of the coolant pool or may be constituted by arranging heat-transfer members above the steam chamber 8 and below the water chamber 10 and communicating the chambers 8 and 10 to each other through heat conducting members which are positioned on both sides of the heat-transfer pipes 9 and surrounded by heat insulating members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling system for a reactor containment vessel which mainly radiates heat generated in a dry well of the reactor containment vessel to the outside.

[0002]

2. Description of the Related Art In a conventional nuclear power plant, a reactor core is rapidly cooled in a case where a coolant in the pressure vessel is discharged outside the pressure vessel due to a break in a pipe connected to the reactor pressure vessel (hereinafter referred to as LOCA). An emergency core cooling system is installed. Further, in addition to the emergency core cooling system, a cooling system for the reactor containment vessel that releases decay heat generated from the reactor core to the outside of the reactor containment for a relatively long time after the accident is provided.

FIG. 8 is a sectional view schematically showing an example of such a cooling system for a containment vessel. The cooling facility shown here is a heat exchanger of a static containment cooling system that cools only by utilizing a natural phenomenon without requiring a power supply.

[0004] In the figure, reference numeral 1 partially shows a reactor containment vessel. The reactor containment vessel 1 mainly includes a dry well 15 for containing the reactor pressure vessel 3 containing the reactor core 2, and a pressure containing a pressure suppression pool (suppression pool) 17 communicating with the dry well 15 and the vent pipe 19. And a suppression chamber (suppression chamber) 16.

The reactor pressure vessel 3 has a main steam pipe 4 for sending steam generated in the pressure vessel 3 to a turbine (not shown).
Is connected. Further, a gravity-fall type core cooling system pool 5 connected to the reactor pressure vessel 3 through a cooling water pipe 13 is provided above the reactor containment vessel 1. During normal operation, the check valve 20 provided in the cooling water pipe 13 is closed.

[0006] A cooling water pool 6 is provided above the gravity-fall type core cooling system pool 5, and a heat exchanger 7 is provided in the water of the cooling water pool 6. The heat exchanger 7 includes a steam chamber 8 containing steam, a water chamber 10 provided below the steam chamber 8 and containing water generated by condensation of steam, and a steam chamber 8.
And an electric heating tube 9 connected to the water chamber 10.

[0007] A steam supply pipe 11 is connected to the steam chamber 8 of the heat exchanger 7. The steam supply pipe 11 opens into an upper space in the containment vessel 1 and supplies steam into the steam chamber 8. The water chamber of heat exchanger 7
A condensed water return pipe 12 for discharging condensed water to a gravity-fall type core cooling system pool 5 located below the water chamber 10 is connected to 10.

An operation example of the cooling system for a reactor containment vessel having such a configuration will be described. For example, although it is a very rare event in terms of probability, the LO
When CA occurs, a pressure-reducing valve (not shown) provided in the reactor pressure vessel 3 is opened in response to a reactor water level decrease signal or the like of the reactor pressure vessel 3 due to loss of coolant. Therefore, the pressure in the reactor pressure vessel 3 decreases, and the pressure in the dry well 15 increases. When the pressure of the gravity-fall type core cooling system pool 5 becomes higher than the pressure of the reactor pressure vessel 3 in consideration of the water head pressure, the check valve 20 of the cooling water pipe 13 is opened, and the gravity-fall type core cooling system pool is opened. The cooling water 5 a stored in the reactor 5 is injected into the reactor pressure vessel 3 through the cooling water pipe 13.

Thereafter, in the long-term cooling process, the core 2 of the reactor pressure vessel 3 continues to generate decay heat, so that the high-temperature steam of the coolant discharged outside the pressure vessel 3 causes the pressure inside the reactor containment vessel 1 to rise. Keeps rising. However, in order to strictly prevent the destruction of the reactor containment vessel 1 and to prevent external leakage of radioactive materials even during LOCA,
A heat exchanger 7 is provided as means for suppressing an increase in the internal pressure before the inside reaches the design pressure, and the vapor is condensed. The heat exchanger 7 and its peripheral devices are also called static containment cooling system (PCCS) because they cool the containment vessel using a natural phenomenon called condensation without a dynamic driving source.

That is, the steam discharged to the dry well 15 flows into the steam chamber 8 of the heat exchanger 7 through the steam supply pipe 11, is condensed by the cooling water of the cooling water pool 6, and is condensed by a difference in density. The condensed water separated into a phase and a gas phase and stored in the water chamber 10 is discharged to the gravity-fall type core cooling system pool 5 through the condensed water return pipe 12. The uncondensed vapor and the non-condensable gas are discharged to the pressure suppression pool 17 through the non-condensable gas vent pipe 14. At this time, the opening of the tip of the non-condensable gas vent pipe 14 is submerged in the water of the pressure suppression pool 17 so that the uncondensed components in the released gas are condensed by the water of the pressure suppression pool 17.

[0011]

Since the cooling water pool 6 is conventionally made of concrete, the latent heat generated in the heat exchanger 7 during the above-described series of condensing processes causes the cooling water pool 6 to cool.
The water in the pool gradually rises,
If this state is prolonged, it is conceivable that boiling starts soon and steam is generated. In order to suppress the pressure increase in the cooling water pool 6, a part of the generated steam is
Is discharged to the outside of the reactor containment vessel 1 through a steam discharge pipe 18 provided on the upper part of the pool and opened to the outside of the pool.

[0012] The cooling water in the cooling water pool 6 is
Assuming the time of CA, it is necessary to release the decay heat generated from the reactor core to the outside of the reactor containment vessel 1 for a long period of time. That is, since the latent heat generated in the heat exchanger 7 is always released into the water of the cooling water pool 6, the pool water level is reduced so that the heat transfer tube 9 of the heat exchanger 7 is not exposed above the pool water surface. It needs to be suppressed.

However, since the steam generated in the cooling water pool 6 at the time of LOCA is released from the steam discharge pipe 18, the water level in the cooling water pool 6 gradually decreases. If such a situation is prolonged, a part of the heat exchanger 7 may be exposed above the pool water surface. Therefore, in the cooling water pool 6,
In such a case, the water is initially stored assuming the amount of water discharged to the outside.

Further, if the initial water storage amount of the cooling water pool 6 is set to be large, the load of the entire cooling water pool 6 is greatly increased due to the water load and the structural reinforcement required accordingly. This is because the cooling water pool 6 itself was installed above the reactor containment vessel 1 in order to discharge the condensed water from the water pipe 10 of the heat exchanger 7 by the condensed water return pipe 12, and the earthquake resistance of the entire equipment was considered. This is not preferable in view of the above.

Therefore, the amount of water discharged to the cooling water pool 6 as steam is suppressed to a very small amount as compared with the prior art, so that the initial water amount of the cooling water pool 6 is reduced, and the equipment of the entire cooling water pool 6 is reduced. It is desired to reduce the load.

Further, the heat generated in the cooling water pool 6 heats the vicinity of the surface of the water extremely high, and the low-temperature water moves downward and stagnates. Occurs. Thereby, especially when the initial water amount of the cooling water pool 6 is set large as described above, a relatively large amount of water in the entire pool water,
In particular, water located below the heat exchanger 7 does not contribute to cooling of the steam in the heat exchanger 7. Therefore, it is desired to suppress the temperature stratification of the pool water and effectively condense using the entire amount of the pool water, thereby increasing the efficiency of condensation and suppressing the amount of steam generated due to a rise in the temperature of the pool water surface. .

The present invention has been made in view of the above problems, and heat transmitted from a heat transfer tube by steam introduced into a heat exchanger into the cooling water pool water is supplied to the outside of the reactor containment vessel through the cooling water pool wall. By discharging the cooling water, the initial amount of water in the cooling water pool is reduced as compared with the conventional case, and the load on the entire equipment is reduced.

Further, the present invention is to prevent or alleviate the temperature stratification which is expected to occur conventionally by the heat transferred from the heat transfer tube by the steam introduced into the heat exchanger into the cooling water pool water. The purpose is to reduce the amount of water and reduce the load on the entire equipment.

[0019]

According to the present invention, in order to achieve the above object, a drywell containing a reactor pressure vessel containing a reactor core is connected to a drywell via a vent pipe provided adjacent to the drywell. A pressure suppression chamber containing a pressure suppression pool, a core cooling system pool provided above the pressure suppression chamber and communicating with the reactor pressure vessel via a cooling water pipe and a check valve, and a core cooling system pool. A cooling water pool provided above, a steam room provided in the cooling water pool, containing steam and communicating with the drywell via piping, and a core cooling system pool and a pressure suppression pool located below the steam room. And a heat transfer pipe connecting the water chamber and the steam chamber to the reactor containment vessel, and cooling at least a part of the outer wall of the cooling water pool. Characterized by using a heat dissipation member disposed in contact with the external space of the pool water and the containment vessel.

According to this configuration, the heat transmitted from the heat transfer tube by the steam introduced into the heat exchanger into the cooling water pool water is released to the outside of the reactor containment vessel through the cooling water pool wall, so that the heat inside the cooling water pool is reduced. Can reduce the amount of steam generated.

Further, it is more difficult to mold at least a part of the surface of the heat radiation member into a curved surface having irregularities.
Thereby, the heat radiation effect can be enhanced by increasing the surface area of the heat radiation member.

Further, by using a steel material or a material having high thermal conductivity such as copper or aluminum as the heat radiation member, the heat radiation effect of the cooling pool water can be enhanced.

Further, the outer side wall of the cooling water pool is formed by a heat radiating member, and the roof of the cooling water pool connected to the outer side wall of the cooling water and disposed above the cooling water pool is made of steel. Thus, the heat radiation effect can be enhanced by radiating heat from both the side surface and the upper surface of the cooling water pool.

Further, the present invention provides a first heat conducting member located above the steam chamber of the heat exchanger, a second heat conducting member located below the water chamber, and a laterally located heat transfer tube. It is characterized by comprising a third heat conductive member connecting the first heat conductive member and the second heat conductive member, and a heat insulating member surrounding the third heat conductive member. As a result, the heat generated in the cooling water pool is generated by releasing the heat of the water in the vicinity of the water surface of the cooling water pool below the cooling water pool, thereby suppressing the temperature stratification in the depth direction of the cooling water pool. The amount of steam can be reduced.

Further, the bottom area of the cooling water pool is set smaller than the ceiling area, or a partition wall connected to the bottom and side surfaces of the cooling water pool is provided, and water located below the partition wall is positioned upward. It is preferred to isolate it from the water that forms it. Thereby, the amount of water below the cooling water pool that does not contribute to the heat removal of the heat exchanger can be reduced, and effective heat removal can be performed.

[0026]

Embodiments of the present invention will be described below. The following description focuses on differences from the above-described conventional technology, and the same components as those in the conventional technology are denoted by the same reference numerals and detailed description thereof will be omitted.

Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a sectional view of an essential part of a cooling facility for a containment vessel according to the present embodiment. In the present embodiment, a heat insulating member is used as an outer wall of a cooling water pool in the conventional reactor containment cooling system shown in FIG. 8, and the heat insulating member forms a part of the containment outer wall.

That is, at least a part of the outer wall of the cooling water pool 6 which is installed on the upper part of the containment vessel 1 and which includes the heat exchanger 7 among the outer walls 21 of the containment vessel in FIG. It is.

Generally, the outer wall 21 of the containment vessel is made of concrete, but in the present embodiment, the cooling member 30 is provided so as to contact the pool water 6 at least at the normal water level of the pool 6. As the cooling member 30, it is preferable to use steel, copper, or aluminum. Further, a cooling member may be provided on the outer wall of the cooling water pool near the reactor pressure vessel 1 as necessary.

According to the present embodiment, the temperature of the pool water in the cooling water pool 6 gradually rises due to latent heat generated in the heat transfer tube 9 of the heat exchanger 7 due to condensation of steam at the time of LOCA. By discharging the cooling water to the outside of the containment vessel by the member, the evaporation amount of the pool in the cooling water pool 6 can be reduced as compared with the conventional case. That is, FIG.
Assuming that the normal water level of the conventional cooling water pool shown in (1) is h and the water level of the cooling water pool 6 in the present embodiment is H, H <
h. Further, by simplifying the members constituting the cooling water pool in accordance with the reduction, the load of the entire cooling water pool can be reduced as compared with the related art, in addition to the reduced amount of water.

As shown in FIG. 1, the surface 30a of the heat dissipating member 30 is not flat, but is formed in a stepped shape or by forming fins (small fins). It is preferable to increase the surface cross-sectional area to be formed. Thereby, the heat radiation effect by the heat insulating member can be further enhanced.

Hereinafter, a second embodiment of the present invention will be described. FIG. 2 is a cross-sectional view of a main part of the cooling facility of the containment vessel according to the present embodiment. In the present embodiment, the outer side wall of the cooling water pool in the conventional cooling system for a containment vessel shown in FIG. 8 is formed of a heat insulating member.

That is, of the outer walls 21 and 22 of the storage container in FIG.
31a and 31b. It is preferable to use a steel material as the heat radiation member here.

According to the present embodiment, the temperature of the pool water in the cooling water pool 6 gradually increases due to latent heat generated in the heat transfer tube 9 of the heat exchanger 7 due to condensation of steam during LOCA, but the heat is radiated. By discharging the cooling water to the outside of the containment vessel by the outer wall made of the members, the amount of evaporation of the pool in the cooling water pool 6 can be reduced as compared with the conventional case. That is, if the normal water level of the conventional cooling water pool shown in FIG. 9 is h and the water level of the cooling water pool 6 in the present embodiment is H, then H <h. Further, by simplifying the members constituting the cooling water pool in accordance with the reduction, the load of the entire cooling water pool can be reduced as compared with the related art, in addition to the reduced amount of water.

By combining the present embodiment with the first embodiment, a part of the heat radiating member 31a constituting the side outer wall of the cooling water pool 6 on the outer wall 21 of the reactor containment vessel is separately provided with a large surface sectional area. It is conceivable that the heat radiation member 30 is used. FIG. 3 is a cross-sectional view of a main part in this case. Thereby, the heat radiation efficiency from the cooling water pool can be further increased.

Hereinafter, a third embodiment of the present invention will be described. FIG. 4 is a cross-sectional view of a main part of the cooling equipment for a containment vessel according to the present embodiment. In this embodiment, the upper surface wall of the cooling water pool in the second embodiment shown in FIG. 2 is constituted by a heat insulating member. As the heat insulating member, a steel material is preferable.

That is, the outer wall of the upper surface of the cooling water pool connected to the outer walls 31a and 31b of the cooling water pool made of steel is also made of the steel 32. According to the present embodiment, the same operation and effect as those of the second embodiment can be obtained,
The heat generated in the cooling water pool 6 at the time of LOCA is released not only from the side wall to the outside but also to the outside by the radiating member provided above in the cooling water pool gas phase in which the steam rises and stagnates. Thus, the heat radiation effect can be further improved. Further, it is also possible to liquefy the steam by releasing the heat of the generated steam to the outside to lower the temperature of the upper surface of the pool.

As shown in FIG. 5, the outer side wall of the cooling water pool outer wall may be made of concrete as in the prior art, and only the upper outer wall may be formed of a heat radiating member 32 such as steel. In this case, although the effect of reducing the amount of generated steam near the water surface of the cooling water pool is small, it is also possible to liquefy the steam by lowering the temperature of the pool upper surface by releasing the heat of the generated steam to the outside. Accordingly, the amount of steam stagnating on the pool upper surface as a whole can be reduced.

Hereinafter, a fourth embodiment of the present invention will be described. FIG. 6 is a cross-sectional view of a main part of the cooling equipment for a reactor containment vessel according to the present embodiment. In the present embodiment, heat conductors are arranged above and below the heat exchanger in a cooling water pool in the conventional cooling system for a containment vessel shown in FIG. A heat insulating material is provided around a heat conductor arranged so as to connect the body and the lower heat conductor.

That is, a heat conductor 33a is provided above the steam chamber 8 above the heat exchanger 7, and a heat conductor 33b is provided below the water chamber 10 below the heat conductor 7, and these heat conductors 33a and A heat conductor 33c communicating with 33b is provided. A heat insulator 34 is provided around the heat conductor 33c so as to surround the heat conductor 33c. According to FIG. 6, it can be seen that the heat conductors 33a, 33b, 33c and the heat insulating material 34 are arranged in a U-shape in cross section.

At the time of LOCA, the heat exchanger 7
Water pool 6 by the latent heat generated in the heat transfer tube 9
The temperature of the pool water inside gradually rises. In particular, high-temperature water has a low density and moves near the pool water surface, and low-temperature water moves downward in the pool water. Therefore, the temperature of the pool water located below the heat transfer tube 9 of the heat exchanger 7 hardly rises. The present embodiment focuses on this point, and transfers heat generated near the pool water surface to the heat conductors 33a, 33a.
The heat is transmitted in the direction of 33a → 33c → 33b by b and 33c, and the heat is transmitted to water located near the bottom of the pool. Here, in the heat conductor 33c located on the side of the heat exchanger 7, since heat insulating material is arranged around the heat conductor 33c, heat transfer in water located around the heat conductor 33c is hardly performed. . Therefore, most of the heat absorbed by the heat conductor 33a is released by the heat conductor 33c, so that heat conduction from the upper part to the lower part of the pool water is established.

As described above, the present embodiment focuses on the fact that there is a temperature difference between the upper part and the lower part of the pool, and utilizes the property that heat moves from a high temperature to a low temperature to take advantage of the property that the heat near the pool water surface. Cool the water. This can suppress the temperature stratification in the depth direction in which the temperature rises only near the surface of the pool water, so that effective cooling can be promoted by using the entire amount of the pool water. Therefore, the cooling water pool 6
The amount of evaporation of the pool in the interior can be reduced as compared with the conventional case. That is, if the normal water level of the conventional cooling water pool shown in FIG. 9 is h and the water level of the cooling water pool 6 in the present embodiment is H, then H <h. Further, by simplifying the members constituting the cooling water pool in accordance with the reduction, the load of the entire cooling water pool can be reduced as compared with the related art, in addition to the reduced amount of water.

By combining this embodiment with the above-described first to third embodiments, the cooling and heat removing effect of the cooling water pool can be further enhanced. Hereinafter, a fifth embodiment of the present invention will be described. FIG. 7 is a cross-sectional view of a main part of the cooling facility of the containment vessel according to the present embodiment. In the present embodiment, a partition wall is provided at the bottom of a cooling water pool in the conventional cooling system for a containment vessel shown in FIG. 8 so that water and heat are not exchanged inside and outside the partition wall.

At the time of LOCA, the heat exchanger 7
Water pool 6 by the latent heat generated in the heat transfer tube 9
The temperature of the pool water inside gradually rises. In particular, high-temperature water has a low density and moves near the pool water surface, and low-temperature water moves downward in the pool water. Therefore, the pool water located below the heat transfer tubes 9 of the heat exchanger 7 hardly contributes to the heat removal of the heat exchanger 7. Therefore, partition 35
a, 35b are provided to separate the pool water located below and above the partition walls 35a, 35b from each other. Thereby, the amount of pool water located above the partition walls 35a and 35b can be reduced.

As a modified example of the present embodiment, by making the lower bottom area of the cooling water pool smaller than the ceiling area,
By making the amount of water located in the lower part of the cooling water pool smaller than the amount of water located near the water surface, the amount of water that does not contribute to heat removal is reduced, and the equipment load of the entire cooling water pool is reduced accordingly be able to.

Although the cooling effect of this embodiment can be expected to be substantially the same as that of the conventional one, by using this embodiment in combination with the first to fourth embodiments, the pool water amount can be reduced and the pool water amount can be reduced. The cooling effect can be enhanced. Water temperature hardly rises. The present embodiment focuses on this point, and the heat generated near the pool water surface is transferred from the heat conductors 33a, 33b, 33c to 33a → 33c.
→ Transfer in the direction of 33b, and transfer heat to water located near the bottom of the pool. Here, in the heat conductor 33c located on the side of the heat exchanger 7, since heat insulating material is arranged around the heat conductor 33c, heat transfer in water located around the heat conductor 33c is hardly performed. . Therefore, most of the heat absorbed by the heat conductor 33a is released by the heat conductor 33c, so that heat conduction from the upper part to the lower part of the pool water is established.

As described above, the present embodiment focuses on the fact that there is a temperature difference between the upper part and the lower part of the pool, and makes use of the property that heat moves from a high temperature to a low temperature. Cool the water. This can suppress the temperature stratification in the depth direction in which the temperature rises only near the surface of the pool water, so that effective cooling can be promoted by using the entire amount of the pool water. Therefore, the cooling water pool 6
The amount of evaporation of the pool in the interior can be reduced as compared with the conventional case. That is, if the normal water level of the conventional cooling water pool shown in FIG. 9 is h and the water level of the cooling water pool 6 in the present embodiment is H, then H <h. Further, by simplifying the members constituting the cooling water pool in accordance with the reduction, the load of the entire cooling water pool can be reduced as compared with the related art, in addition to the reduced amount of water.

[0048]

As described above, according to the present invention, L
By suppressing the amount of the cooling water pool water whose temperature rises during OCA, which is released into the atmosphere as steam, the initial amount of water in the cooling water pool and the load on the entire equipment can be reduced as compared with the conventional reactor, The quake resistance of the cooling water pool located above the containment vessel can be enhanced, and thus the soundness of the reactor containment vessel can be further improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a cooling facility for a containment vessel according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a cooling facility for a containment vessel according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a cooling facility for a containment vessel according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a cooling facility for a containment vessel according to a third embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a cooling facility for a containment vessel according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a main part of a cooling facility for a containment vessel according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a main part of a cooling facility for a containment vessel according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a conventional cooling system for a containment vessel.

FIG. 9 is a sectional view of a main part of a conventional cooling system for a containment vessel.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Containment vessel, 2 ... Reactor core, 3 ... Reactor pressure vessel, 4 ... Main steam pipe, 5 ... Gravity fall type core cooling system pool, 6 ... Cooling water pool, 7 ... Heat exchanger, 8 ... Steam room, 9
... heat transfer tube, 10 ... water tube, 11 ... steam supply tube, 12 ... condensed water return tube, 13 ... cooling water piping, 14 ... non-condensable gas vent tube, 15 ...
Dry well, 16… Suppression chamber, 17… Suppression pool,
18 ... steam discharge pipe, 19 ... vent pipe, 20 ... check valve, 21, 22 ...
Outer wall of the containment vessel, 30, 31a, 31b, 32 ... heat dissipating member,
30a: fins, 33a, 33b, 33c: heat conducting members, 34: heat insulating members, 35a, 35b: partition walls

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiichi Yokobori 1 Tokoba Toshiba-cho, Komukai-ku, Kawasaki-shi, Kanagawa Pref.

Claims (7)

[Claims] A dry well containing a reactor pressure vessel accommodating a reactor core, a pressure suppression chamber provided adjacent to the dry well and connected via a vent pipe and containing a pressure suppression pool; A core cooling system pool provided above the reactor chamber and communicating with the reactor pressure vessel via a cooling water pipe and a check valve, a cooling water pool provided above the core cooling system pool, and the cooling water pool A steam chamber that contains steam and communicates with the drywell through a pipe, and a water chamber that is located below the steam chamber and communicates with the core cooling system pool and the pressure suppression pool through a pipe, respectively. And a cooling facility for a reactor containment vessel including a heat exchanger including a heat transfer tube connecting the water chamber and the steam chamber, wherein at least a part of an outer wall of the cooling water pool includes the cooling water. A cooling system for a reactor containment vessel, characterized by using a heat radiating member arranged so as to be in contact with pool water and an outer space of the reactor containment vessel. 2. The heat radiation member according to claim 1, wherein at least a part of the surface of the heat radiation member is formed into a curved surface having irregularities.
Reactor containment cooling equipment as described. 3. The cooling equipment for a containment vessel according to claim 1, wherein a steel material is used as said heat radiation member. 4. The cooling water pool roof, wherein the cooling water pool has a side outer wall formed by a heat radiating member, and the cooling water pool roof connected to the side outer wall and disposed above the cooling water pool is made of steel. 2. The cooling equipment for a reactor containment vessel according to 1. 5. A dry well for storing a reactor pressure vessel accommodating a reactor core, a pressure suppression chamber provided adjacent to the dry well and connected via a vent pipe and containing a pressure suppression pool, and a pressure suppression chamber. A core cooling system pool provided above the reactor chamber and communicating with the reactor pressure vessel via a cooling water pipe and a check valve, a cooling water pool provided above the core cooling system pool, and the cooling water pool A steam chamber that contains steam and communicates with the drywell through a pipe, and a water chamber that is located below the steam chamber and communicates with the core cooling system pool and the pressure suppression pool through a pipe, respectively. And a cooling system for a reactor containment vessel including a heat exchanger comprising a heat transfer tube connecting the water chamber and the steam chamber, wherein a first heat conducting member located above the steam chamber, Room A second heat conductive member located below the first heat conductive member and a third heat conductive member positioned laterally of the heat transfer tube and connecting the first heat conductive member and the second heat conductive member. And a heat insulating member surrounding the third heat conductive member. 6. The cooling equipment for a containment vessel according to claim 1, wherein a bottom area of the cooling water pool is set smaller than a ceiling area. 7. The cooling water pool according to claim 1, further comprising a partition wall connected to a bottom surface and a side surface of the cooling water pool, wherein water located below the partition wall is isolated from water located above the partition wall. Item 6. A cooling system for a containment vessel according to item 5.