JPH08247899A - Valve operation testing device, instrumentation piping facility, and valve operation testing method - Google Patents

Abstract

PURPOSE: To provide a value testing device of an excessive flow preventing value for instrumentation piping in a nuclear reactor storage container enabling operation test to be made efficiently in any timing. CONSTITUTION: A valve operation testing device 100 is composed of a connecting hose 111 connecting the valve operation testing device 100 with the instrumention piping, cylinders 102a, 102b connected to the connecting hose 111, pistons 104a, 104b arranged in the cylinders 102a, 102b in a reciprocating manner, piston driving means 106a, 106b driving the pistons 104a, 104b in a reciprocating manner, and pouring valves 109a, 109b to pour into the cylinders 102a, 102b, and after a separating valve for test disposed in the instrumentation piping separates the downstream of the separating valve, the connecting hose 111 is connected to a source valve for test disposed in the upstream the separating valve to enable to pour the fresh water in the cylinder 102a into the instrumentation piping through the connecting hose 111 in the forth operation of the piston 104a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve testing apparatus installed in a nuclear power plant for preventing an excessive flow rate of instrumentation piping, an instrumentation piping facility used for the test, and Regarding the test method of valves.

[0002]

2. Description of the Related Art Conventionally, a large number of instrumentation pipes for measuring pressure and flow rate of process pipes in a reactor pressure vessel and a reactor containment vessel are installed in a nuclear power plant. This instrumentation pipe is basically divided into the reactor pressure vessel boundary, the reactor containment vessel boundary, and the general system.If a leakage accident occurs in the general system piping, instrument, instrumentation valve, etc., A valve that shuts off the pipe when the preset flow rate flows so that the water in the process piping in the reactor pressure vessel and the reactor containment vessel does not flow out (hereinafter referred to as "overflow prevention valve"). (Referred to)) is installed.

As shown in FIG. 4, the overflow prevention valve 5 has a valve body 41, a valve casing 42, and a valve chamber 43 in the valve casing 42, which is elastic in a direction separating the valve body 41 from a valve seat 44. The valve body 41 is always biased in the direction of arrow A by a magnetic force. As a result, the valve body 4
The lift amount of 1 is the magnetic force, the elastic force of the spring 45, and the pipeline 46.
It is defined by the pressure of the cooling water flowing through. Since the leakage amount at the time of valve operation is strictly regulated, the overflow prevention valve 5 has a special valve structure, and in particular, the gap 47 between the valve casing 42 and the valve body 41 is very narrow. ing. Therefore, when water in the process pipe and the equipment flows in the instrumentation pipe, foreign matter may be caught in the gap 47 to cause malfunction.

FIG. 3 shows a schematic structure of instrumentation piping provided in connection with a reactor containment vessel having such an overflow prevention valve 5. The instrumentation pipe 3 is led out through the reactor containment vessel 1 and the penetration 2, and is connected to each measuring section 8 in the instrumentation rack 7 from a pipeline 6 provided with a manual isolation valve 4 and an overflow prevention valve 5. ing. The measuring unit 8 is provided in parallel between the branch pipe line 9 branched from the pipe line 6 and the drain pipe 11 connected to the drain receiving port 10. The measuring unit 8 includes a connecting pipe 14 arranged in series between the branch pipe 9 and the drain pipe 11 via a rack inlet valve 12 and a blow valve 13, respectively, and a meter inlet valve 15 in the connecting pipe 14.
The measuring instrument 16 is connected via the measuring instrument 16 and the test valve 17 connected to the downstream side of the connecting portion of the measuring instrument 16, and the necessary number is provided (in FIG. 3, four measuring portions 8 are provided. An example is shown.). A water stop valve 18 is provided on the inlet side of the drain receiving port 10 of the drain pipe 11, and a water pipe 20 is connected to the drain pipe 11 via a water valve 19. In addition, the upstream side of the penetration 2 is connected to the pressure vessel 21, the reference surface 23 is provided in the pipe line 22 between the penetration 2 and the pressure vessel 21, and the water in the penetration 2 and the instrumentation pipe 3 is the reference head. You can check if you have reached 24.

[0005]

In the instrumentation pipe thus constructed, in order to perform an operation test of the overflow prevention valve 5, first, a certain differential pressure which is an operation condition of the valve is required. And it is necessary to secure the flow rate. Therefore, in the test, it is necessary to forcibly flow out the fluid to be measured to the drain receiving port 10 by the process piping pressure in the reactor pressure vessel 1 and the reactor containment vessel or the head pressure. Since this condition is not satisfied during normal operation, it is conventionally performed at the time of the pressure test of the reactor pressure vessel just before the end of the periodic inspection.

The valve opening and closing work during the operation test of the overflow prevention valve 5 requires a condition that the instrument 16 is not damaged for various protection purposes because a flow is generated in the instrumentation pipe 3. Therefore, in order to prevent foreign matter from entering the instrument 16, the instrument inlet valve 15 installed on the upstream side of the instrument 16 is fully closed, and the water in the instrumentation pipe 3 is discharged. 13 and the water tension stop valve 18 are fully opened, and the water in the instrumentation pipe 5 is discharged to the drain receiving port 10. Since this operation may be performed for one measuring unit 8, the rack inlet valve 12 is closed for the other measuring units 8.
During this time, the blow valve 13 and the water stop valve 18 for a long time
Since the reactor water will flow out to the drain receiving port 10 when the valve is fully opened, the blow valve 13 and the water stop valve 18
It is not easy to set the fully open time.

The water filling of the instrumentation pipe 3 after the operation test of the overflow prevention valve 5 is completed by fully closing the water filling stop valve 18 installed in the drain pipe 11, the blow valve 13, and the rack inlet valve 12.
Also, with the manual isolation valve 4 fully open, the water filling valve 19 is opened and a clear stream from the water filling pipe 20 to the system side is supplied to the instrumentation pipe 3
Water inside. When water filling is performed for a certain period of time and the water in the instrumentation pipe 3 is replaced with a clear stream and reaches the reference water head 24, the water filling valve 19 and the blow valve 13 are fully closed to isolate the instrumentation pipe 3. Then, the water stop valve 18 is fully opened so that unnecessary water in the drain pipe 11 is discharged to the drain receiving port 10.

For the instrument calibration work after the operation test of the overflow prevention valve 5, the test valve 17 for calibrating the instrument 16 is used to perform the calibration test of the instrument 16 by the instrument calibration device.
After the calibration of the instrument 16 is completed, the instrument inlet valve 15 installed on the upstream side of the instrument 16 is fully opened to start the measurement.

As described above, in the operation test of the ordinary overflow prevention valve, the test period is limited, and in addition to the valve opening / closing work around the instrument, the water filling work of the instrumentation pipe, and the instrument calibration work. The situation is inevitable.

The present invention has been made in view of the above-mentioned circumstances of the prior art. A first object of the present invention is to perform an operation test of an overflow prevention valve at an arbitrary time. To provide a device.

A second object of the present invention is to provide an overflow prevention valve testing device which can efficiently test an overflow prevention valve.

A third object of the present invention is to provide an instrumentation piping facility which can be arbitrarily tested by an overflow prevention valve testing device.

A fourth object of the present invention is to provide a test method capable of efficiently and arbitrarily performing an operation test of an overflow prevention valve.

[0014]

In order to achieve the above first and second objects, the first means is for an overflow prevention valve installed in a pipe downstream of penetration attached to a reactor containment vessel. In an overflow check valve operation test device for performing an operation test, connecting means for connecting to the instrumentation pipe on the downstream side of the penetration, and water connected to the connecting means and supplying water into the instrumentation pipe through the connecting means. The valve is opened, and water is drained from the inside of the instrumentation pipe to close the valve. In this case, a pair of water supply / drainage means may be provided. As the water supply / drainage means, for example, a cylinder connected to the connection means, a piston reciprocally arranged in the cylinder, and a piston drive means for reciprocating the piston are provided. And a water injection means for supplying water into the cylinder on the front side of the piston so that water can be injected into the instrumentation pipe through the connecting means when the piston moves forward. Further, it is preferable that the connecting means includes a valve device that opens and closes a pipe communicating with the connecting hose and the cylinder. Further, a pair of the piston, the cylinder, the piston driving means and the water injection means may be provided, and the connecting means may be composed of a connecting hose and a valve device provided between the hose and the cylinder. Incidentally, the piston drive means, a motor driving force transmission mechanism including a motor and a clutch mechanism for reciprocating the piston through a piston rod,
It can also be composed of a spring for returning the piston.

In order to achieve the above-mentioned third object, the second means is an overflow blocking valve installed in a pipe downstream of the penetration attached to the reactor containment vessel, and a downstream of the overflow blocking valve. In the instrumentation piping equipment configured to include the installed instruments, a connection end for connecting the valve operation test device is provided in the pipe downstream from the overflow prevention valve installation position, and the connection end and the above-mentioned Isolation means for isolating the pipeline connected with the instruments from the pipeline connected with the overflow prevention valve and the valve operation test device during the overflow prevention valve operation test between the pipeline connected with the instruments , For example, a valve is provided.

In order to achieve the above-mentioned fourth object, a third means is a valve operation test method for performing an operation test of an overflow prevention valve installed in a pipe downstream of penetration attached to a reactor containment vessel. A test connection end is provided in the pipe line on the downstream side of the overflow prevention valve, and isolation means is provided on the downstream side of the test connection end to close the pipe line at the time of testing and isolate the pipe line on the downstream side from the closed position. During the test, the isolation means isolates the pipeline on the downstream side from the closed position, and then water supply / drainage means is connected to the test connection end to supply water from the pipeline on the downstream side of the overflow prevention valve to the penetration side. Then, it is drained rapidly, and the operation of the overflow prevention valve is tested.

In this case, as the water supply / drainage means, for example, a connecting device for connecting to the instrumentation pipe on the downstream side of the penetration, a cylinder connected to the connecting means, and a piston reciprocally arranged in the cylinder. A piston drive device that reciprocates the piston, and a water injection device that injects test water into the cylinder on the front side of the piston so that water can be injected into the instrumentation pipe through the connecting means when the piston moves forward can do.

[0018]

[Operation] As a method for achieving the operating condition of the overflow prevention valve, the test water filled in the cylinder by the water injection device for injecting the test water into the instrumentation pipe is supplied by the driving force of the water supply / drainage means such as the piston drive mechanism The piston is moved forward to inject water into the instrumentation pipe, and the water in the instrumentation pipe near the overflow prevention valve is replaced with a clear stream. Then, the piston is moved back by the driving force of the piston drive mechanism, and the water in the instrumentation pipe is sucked into the cylinder. The driving force at this time uses, for example, the elastic force of a spring. As a result, the water in the instrumentation pipe is sucked into the cylinder at once. Due to this suction action, a constant differential pressure and flow rate are generated in the piping before and after the overflow prevention valve installed in the instrumentation piping, and the operation of the overflow prevention valve can be confirmed.

After the test of the operation of the overflow prevention valve is completed, the water sucked into the piston is returned to the instrumentation pipe. that time,
If it does not reach the standard water head of the instrumentation pipe, inconvenience may occur.Therefore, pour water contained in the other side of the pair of cylinders into the instrumentation pipe, and clean water above the water extracted during the overflow prevention valve operation test. Supply. This makes it possible to secure a reference head of water in the instrumentation pipe.

As a method for achieving the operation of opening and closing the instrumentation valve around the instrument, the reduction of the instrumentation calibration work, and the reduction of the water filling work of the instrumentation pipe, the instrumentation instrument equipped with the instrumentation at the time of the test is designed pipe. By installing a valve to isolate the piping on the rack side and isolating the instrumentation piping and instrumentation around the instrument during the overflow prevention valve operation test, the instrumentation valve opening / closing work and instrument calibration work around the instrument can be reduced.

That is, during the operation test of the overflow prevention valve, the instrumentation pipes and instruments around the instrument are isolated, a differential pressure is generated before and after the overflow prevention valve, and a driving force is applied to the overflow prevention valve to drive it. The quality of is judged. Therefore, the test timing can be set arbitrarily as necessary because the instrument side is isolated.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same parts as those in the above-mentioned conventional example are designated by the same reference numerals, and the duplicated description will be omitted.

FIG. 1 is a sectional view showing the structure of the test apparatus according to the embodiment. In the figure, the test apparatus 100 comprises a pair of water supply / drainage devices 101a and 101b. Since these water supply / drainage devices are exactly the same, one has a suffix of a and the other has a suffix of b.
The suffix is omitted in the general description.

The first and second water supply / drainage devices 101 include a cylinder 102 and an O-ring 103 inside the cylinder 102.
And a piston rod 105 connected to the rear surface of the piston 104.
And a piston drive mechanism 106 provided on the side opposite to the piston connection of the piston rod 105 and capable of reciprocally driving the piston rod 105, gaskets 107 and 108 for slidably supporting the piston rod 106, and water injection into the cylinder 102. And a switching valve 110 for draining the water in the cylinder 102 from the end of the cylinder 102.
And a connecting hose 111 connected to both switching valves 110 and further connected to a test source valve 25 described later. The piston drive mechanism 106 includes a drive motor 112, a clutch mechanism 113, a rack and pinion 114 connected to the clutch mechanism 113, and a spring 115 for rapidly retracting (returning) the piston rod 105.

The operation of the test apparatus 100 will be briefly described below. The rotation of the drive motor 112 depends on the clutch mechanism 11.
3 and the rack and pinion 114 to be converted into a linear motion and transmitted to the piston rod 105. The piston rod 105 is reciprocally driven by these mechanisms. The spring (coil spring) 115 is for returning the piston rod 105 to rapidly retract,
When the piston 104 retracts, water in the pipe is taken in from the switching valve 110 side. On the other hand, when the piston 104 moves forward, the water that has been poured and stayed in the cylinder 102 is pushed out from the switching valve 110 to the pipe side.

On the other hand, FIG. 2 is an explanatory view showing the structure of the instrumentation pipe according to the embodiment. In this embodiment, the test according to the present invention is performed on the instrumentation pipe according to the third conventional example described above. A test source valve 25 for connecting the apparatus 100 and a test isolation valve 26 for isolating the instrument rack 8 side on the instrument rack 8 side during the test are provided. The test isolation valve 26 is installed as close to the overflow prevention valve 5 as possible in order to fully close the test isolation valve 26 and isolate the instrument portion 8 side when performing the valve operation test. It should be noted that the test source valve 25 may be located at a position where it can be connected to the outside between the test isolation valve 26 and the overflow prevention valve 5. However, it is preferable to be close to the overflow prevention valve 5 in view of the problem of pipe loss.

When performing an operation test of the overflow prevention valve 5 using the test apparatus 100 having such a configuration, first, the test isolation valve 26 is fully closed and the connection hose 111 is connected to the test source valve. After connecting to 25, the main valve 25 for a test is fully opened. Then, water is injected into the first and second cylinders 102a and 102b from the water injection valves 109a and 109b. At that time, the pistons 104a and 104b are connected to the cylinders 102a and 102
It is in the most retracted position in b. And both cylinders 1
When the inside of 02a, 102b becomes full, both water injection valves 109a,
109b is closed, the second switching valve 110b is fully closed, and the first switching valve 110a is opened. Next, the first drive motor 112a is driven to connect the first clutch 113a to advance the first piston 104a. As a result, the fresh water in the first cylinder 102a is injected into the instrumentation pipe 3 side through the connection hose 111 and the test valve 25, the lift amount of the overflow prevention valve 5 increases, and the valve is sufficiently opened. The water in the instrumentation pipe 3 and the excess flow prevention valve 5 is replaced with clean water.

When the first clutch 113a is released from this state, the first spring 115a extends and the first piston 104a retreats rapidly. As a result, the water in the instrumentation pipe 3 is sucked into the first cylinder 102a. Due to this suction action, a differential pressure is generated before and after the overflow prevention valve 5, and at the same time, a constant flow rate is secured. If the flow rate at this time is higher than the preset flow rate,
The overflow prevention valve 5 operates to shut off the instrumentation pipe 3. By confirming this operation with the open / close indicator, it is possible to confirm the operation of the overflow prevention valve 5 at the time of overflow. In addition,
In this operation test, the water in the instrumentation pipe 3 upstream of the overflow prevention valve 5 is replaced with clean water by the supply of fresh water from the first cylinder 102a.
It is possible to reduce the trapping of sludge and the like inside.
Further, since the water in the instrumentation pipe 3 is collected in the test apparatus 100 and is not discharged to the outside of the system, unnecessary drain does not increase. Therefore, there is no fear of deteriorating the environmental conditions.

After confirming the operation of the overflow prevention valve 5 in this way, the first drive motor 112a is driven to advance the piston 104a, and the piston 104a is sucked into the first piston 104a from the instrumentation pipe 3. Refill with water. After that, the first switching valve 110a is closed and the second switching valve 110b is opened. Then, the second drive motor 112b is driven to move the second piston 104b forward. This makes the second
The water in the cylinder 104b is injected into the instrumentation pipe 3 side. By injecting this fresh water, the connection hose 111, the instrumentation pipe 3, and the overflow prevention valve 5 of the test apparatus 100 can be cleaned and a shortage of reference water head in the instrumentation pipe 3 can be secured. When the injection of fresh water into the instrumentation pipe 5 side in the second cylinder 104b is completed, the test source valve 19 is fully closed, and then the test isolation valve 20 is fully opened.

By doing so, the operation test of the overflow prevention valve 5 can be performed without operating the instrumentation rack 7 side, in other words, opening and closing the instrumentation valve around the instrument 16. Further, since the instrumentation valve around the instrument 16 is not operated, it is not necessary to calibrate the instrument 16 after the operation test is completed, and the work cost can be reduced accordingly. In addition, there is no need for piping and equipment related to water filling as in the conventional example.

It is necessary to secure the reference head for the following reasons. That is, the reference pressure level gauge 23 and the like are installed in the reactor pressure vessel 21 inside the reactor containment vessel 1 and the instrumentation piping 3 installed in the steam system process piping to secure the reference water head 24. Has been done. The reference surface 23 has a structure in which steam constantly circulates and heat and condensation are repeated to keep the reference head 24 constant. Since the overflow prevention valve 5 is installed in the instrumentation pipe 3 in which the reference leveler 23 is installed, when performing an operation test of the overflow prevention valve 5, the internal water in the instrumentation pipe 3 is overflowed. There is a possibility that when the suction valve is temporarily sucked during the operation test of the blocking valve 5 and is discharged, it may be slightly left on the test apparatus 100 side. In this case, if extra water is poured from the test apparatus 100 to the instrumentation pipe 3 side, the reference water level rises and the specified water level can be secured. Therefore, the second cylinder 102b is provided. Therefore, in this embodiment, the second piston 104b is driven to return the fresh water in the second cylinder 102b to the inside of the instrumentation pipe 3 to secure the reference water head 24. If the reference water head 24 can be secured by pouring fresh water into the cylinder 102a, the second cylinder 102b is unnecessary. Also, the second cylinder 1
The surplus water injected into the instrumentation pipe 3 from 02b flows into the reactor pressure vessel 21 and the process pipe, but there is no particular problem in the treatment of condensed water.

[0032]

As is apparent from the above description, the present invention has the following effects.

That is, connecting means for connecting to the instrumentation pipe on the downstream side of the penetration, and water connected to this connecting means for supplying water into the instrumentation pipe through the connecting means to open the valve, According to the invention of claim 1, further comprising water supply / drainage means for draining water from the inside of the instrumentation pipe to close the valve, by connecting to the instrumentation pipe via a connecting means, and supplying / draining water by the water supply / drainage means. Since it is possible to confirm the operation of the overflow prevention valve, the test can be performed at any timing without being restricted by the test timing of the operation test. In addition, by connecting the test device and isolating the instrumentation valve side from the valve operation test device side, it is possible to check the operation of the overflow prevention valve only by operating the valve operation test device, and to improve the test efficiency. It can be implemented well.

According to the second aspect of the present invention, which comprises a pair of water supply / drainage means, after one of the water supply / drainage means completes the operation test of the overflow prevention valve, the other water supply / drainage means can inject water into the instrumentation pipe. Therefore, it is possible to supply a shortage of water to secure the reference head of the instrumentation pipe, which eliminates the need for any operation related to the instrumentation valve, and enables an efficient operation test. Further, since it is not necessary to fill water after the test, the test time can be minimized.

The water supply / drainage means is connected to the connection means,
A cylinder capable of containing water in the front surface, a piston reciprocally arranged in the cylinder, a piston drive device for reciprocating the piston, and an instrumentation pipe through the connecting means when the piston moves forward. According to the invention of claim 3, which comprises a water injection device for supplying water into the cylinder on the front side of the piston so that water can be injected into the cylinder, the operation of the overflow prevention valve can be confirmed with a simple structure. It is possible to provide a valve operation test device at low cost.

According to the invention as set forth in claim 4, wherein the connecting means includes a valve device for opening and closing a pipe communicating with the connecting hose and the cylinder of the valve operation testing device. The connection can be easily performed by the connecting means, and the pouring / draining in the cylinder can be easily controlled by the valve device, so that the test can be efficiently performed.

The invention according to claim 5 is characterized in that the piston drive means comprises a motor drive force transmission mechanism including a motor and a clutch mechanism for reciprocatingly driving the piston via a piston rod, and a spring for returning the piston. Since it is possible to obtain the desired piston movement with a simple mechanism,
A low-cost test apparatus can be provided.

A connecting end for connecting a valve operation testing device for testing the operation of the valve is provided in a pipe downstream of the valve installation position, and between the connecting end and a pipe line to which instruments are connected. 7. The valve operation test device according to claim 6, further comprising isolation means for isolating the pipe line to which the instruments are connected from the pipe line to which the valve and the valve operation test device are connected during the valve operation test. Since it is possible to isolate the pipeline to which the instrument is connected from the pipeline on the valve side to which is connected, it is possible to connect the valve operation test device regardless of the state of the pipeline to which the instrument is connected. become. As a result, the valve operation test can be executed at any timing.

According to the invention of claim 7, the separating means is a valve, and the separating means can be constructed with a simple structure.

A test connecting end is provided on the downstream side of the overflow prevention valve, and a separating means for closing the downstream side of the testing connecting end during the test to isolate the downstream side of the connecting line. During the test, the pipeline is closed by the isolation means to isolate the pipeline on the downstream side of the isolation means installation position from the pipeline on the upstream side of the position, and the water supply / drainage means is connected to the test connection end. Is supplied to the penetration side from a pipe line on the downstream side of the valve, and then rapidly drained to test the operation of the valve. The test can be performed only at the line where the overflow prevention valve is placed by separating the line that is placed and the line not to be tested from the test line. Can be done. Further, the valve operation can be confirmed only by connecting the test water supply / drainage means to the test connection end and supplying and draining the test water by the means, so that the test can be performed efficiently. Further, since the test water is once flowed from the downstream side to the upstream side of the overflow prevention valve, it is possible to suppress foreign matter from being caught in the overflow prevention valve to a minimum. The overhaul and inspection work can be reduced.

The test water supply / drain means reciprocates the connecting device for connecting to the instrumentation pipe on the downstream side of the penetration, the cylinder connected to the connecting means, the piston reciprocally arranged in the cylinder, and the piston. 10. The invention according to claim 9, comprising a piston drive device and a water injection device for injecting test water into the cylinder on the front side of the piston so that water can be injected into the instrumentation pipe through the connecting means when the piston moves forward. The operation of the overflow prevention valve can be confirmed with a simple configuration, and the valve operation test can be easily performed.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the structure of an overflow prevention valve test device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of an instrumentation piping system according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a configuration of a conventional instrumentation piping system.

FIG. 4 is a vertical cross-sectional view showing the structure of an overflow prevention valve.

[Explanation of symbols]

 1 Reactor containment vessel 2 Penetration 3 Instrumentation piping 4 Manual isolation valve 5 Overflow prevention valve 6 Pipe line 7 Instrumentation rack 8 Measuring section 9 Branch pipe line 10 Drain receptacle 11 Drain pipe 12 Rack inlet valve 13 Blow valve 14 Connection pipe Line 15 Instrument inlet valve 16 Instrument 17 Test valve 18 Water stop valve 19 Water stop valve 20 Water stop pipe 21 Pressure vessel 22 Pipe line 23 Reference level 24 Reference water head 25 Test valve 26 Test isolation valve 27 Switching valve 100 Test device 101a , 101b Water supply / drainage device 102a, 102b Cylinder 104a, 104b Piston 106a, 106b Piston drive mechanism 109a, 109b Water injection valve 110a, 110b Switching valve 110 Connection hose 112a, 112b Drive motor 113a, 113b Clutch 114a, 114b Rack ann Pinion 115a, 115b spring

Claims (9)

[Claims] 1. A valve installed on a pipe downstream of a penetration attached to a reactor containment vessel, which shuts off the flow path of the pipe when the flow rate from the penetration side exceeds a preset flow rate. In a valve operation test device for performing an operation test, a connecting means for connecting to the instrumentation pipe on the downstream side of the penetration and a valve connected to the connecting means for supplying water into the instrumentation pipe through the connecting means. And a water supply / drainage means for discharging water from the inside of the instrumentation pipe to close the valve. 2. The valve operation test device according to claim 1, wherein a pair of the water supply / drainage means is provided. 3. The water supply / drainage means is connected to the connection means, and a cylinder capable of containing water in the front surface, a piston reciprocally arranged in the cylinder, and a piston drive device for reciprocating the piston. And a water injection device that supplies water into the cylinder on the front side of the piston so that water can be injected into the instrumentation pipe through the connecting means when the piston moves forward. Or the valve operation test device according to 2. 4. The valve operation test device according to claim 1, wherein the connecting means includes a valve device that opens and closes a conduit communicating with the connecting hose and the cylinder. 5. The piston driving means comprises a motor driving force transmission mechanism including a motor and a clutch mechanism for reciprocally driving the piston via a piston rod, and a spring for returning the piston. Item 3. The valve operation test device according to item 3. 6. A valve installed in a pipe downstream of the penetration attached to the reactor containment vessel, which shuts off the flow path of the pipe when the flow rate from the penetration side becomes larger than a preset flow rate, In an instrumentation piping facility configured to include instruments installed on the downstream side of this valve, a connection end for connecting a valve operation test device that tests the operation of the valve is provided on the downstream side of the valve installation position. The pipe and the valve operation test device are connected to a pipe line to which the instruments are connected during the valve operation test between the connection end and the pipe line to which the instruments are connected. Instrumentation piping equipment, characterized in that it is provided with an isolation means to isolate it from the pipeline. 7. The instrumentation piping facility according to claim 6, wherein the isolation means comprises a valve. 8. A valve installed on a pipe downstream of the penetration attached to the reactor containment vessel, which shuts off the flow path of the pipe when the flow rate from the penetration side becomes larger than a preset flow amount. In a valve operation test method for performing an operation test, a connecting end is provided in a pipe line on the downstream side of the valve, and an isolating means for closing the pipe line at the downstream side of the connecting end during a test to isolate the pipe line on the further downstream side. Provided, during the test, the pipeline is closed by the isolation means to isolate the pipeline downstream of the isolation means installation position from the pipeline upstream of the position, and the water supply / drainage means is connected to the test connection end. A valve operation test method comprising supplying water to a penetration side from a pipe line on the downstream side of the valve, and then rapidly draining the water to test the operation of the valve. 9. A connecting device for connecting the water supply / drainage means to an instrumentation pipe on the downstream side of the penetration, a cylinder connected to the connecting device and capable of containing water in the front surface, and a reciprocating motion in the cylinder. A piston that can be arranged, a piston drive device that reciprocates the piston, and water can be supplied into the cylinder on the front side of the piston so that water can be injected into the instrumentation pipe through the connecting means when the piston moves forward. 9. The valve operation test method according to claim 8, further comprising: