JPH06201896A - Contaminated fluid storage pool protection method and taping robot for protection - Google Patents

Abstract

(57) [Summary] [Purpose] A contaminated fluid that can maintain a clean state that the inside surface of the contaminated fluid storage pool of a contaminated fluid storage pool that temporarily stores fluid contaminated by radioactive substances, etc. (EN) A method of protecting a storage pool and a taping robot for protecting the same. This taping robot for protecting a contaminated fluid storage pool comprises contaminated fluid storage pools 4 and 6 capable of storing a contaminated fluid, a traveling carriage 18 provided so as to travel along the inner surface of the contaminated fluid, It has a taping robot main body 19 that is provided so as to be able to move up and down the traveling carriage 18, and this taping robot main body 19 has a tape-shaped sealing material 26 for a cover releasably attached to the inner surfaces of the contaminated fluid storage pools 4, 6. A protective layer of the cover sealing material 26 is formed on the inner surfaces of the contaminated fluid storage pools 4 and 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for protecting a contaminated fluid storage pool contaminated with radioactive substances, chemical substances, etc. and a taping robot for the protection, and more particularly to a nuclear reactor for temporarily storing contaminated fluid. The present invention relates to a method for protecting a contaminated fluid storage pool such as a well and a steam dryer steam separator pit, and a taping robot for protecting the pool.

[0002]

2. Description of the Related Art In a boiling water nuclear power plant as a light water reactor type nuclear power plant, a reactor containment vessel is formed in a reactor building, and a reactor pressure vessel is housed in the reactor containment vessel. . Above the reactor pressure vessel is a reactor well whose concrete skeleton surface is lined with stainless steel, and to the side of this reactor well is a steam dryer steam-water separator pit or spent fuel storage pool. Etc. are provided so as to communicate freely.

At the time of periodic inspection of the reactor, water is filled in the reactor well and steam dryer steam separator pit, and the steam dryer and steam separator accommodated in the reactor pressure vessel through the reactor well. The vessel is guided into the steam dryer steam separator pit and is temporarily stored in this pit. Therefore, the radioactive water is mixed in the water stored in the reactor well and the steam dryer steam-water separator pit, and the stored water becomes a contaminated fluid in which the radioactive material is mixed.

Since this contaminated fluid is stored in direct contact with the surface of the stainless steel which is the lining material of the reactor well and the steam dryer water / water separator pit, the contaminated fluid is temporarily stored. The generated scale adheres to the stainless steel surface in the contaminated fluid storage pool, and the scale contains radioactive substances.

The contaminated fluid stored in the contaminated fluid storage pool of the reactor well and the steam dryer steam-water separator pit is drained and drained after the periodic inspection is completed. At the same time, it will remain attached to the stainless steel surface that is the lining material of the contaminated fluid storage pool.

[0006]

If the scales adhering to the contaminated fluid storage pool after draining the pool water are left to stand, the scales will eventually dry out and will be separated from the stainless steel surface together with radioactive substances and float in the air. However, there is a risk that the work area will be scattered and contaminated with radioactive substances over a wide area.

As a result, it is considered that these floating radioactive substances may be a source of internal pollution of workers, which significantly impairs the workability thereafter.

Even if a material such as a wall cleaning robot is put in, the decontamination work of the radioactive material requires a great deal of labor and time, and the material cost becomes large.

Taking a reactor well as an example, the size of the well depends on the scale of the power plant, but the diameter is 10
Assuming a cylinder having a height of 8 m and a height of 8 m, the surface area of the cylinder portion is as large as about 250 m ^2. Therefore, it is difficult and time-consuming to remove the firmly adhered scale.

As a means for reducing this scale removal work,
There is also a method of applying removable paint to the inner surface of the reactor well in advance and removing it after use, but it takes a lot of labor and time to apply and remove the paint, and the removed paint contains radioactive substances. Therefore, it is difficult to process.

The present invention has been made in consideration of the above-mentioned circumstances, and is a clean inner surface of a contaminated fluid storage pool for temporarily storing a fluid contaminated by radioactive substances or the like, which is not invaded by pollutants such as radioactive substances. An object of the present invention is to provide a method for protecting a contaminated fluid storage pool that can be maintained in a state and a taping robot for the protection.

Further, another object of the present invention is to easily and easily carry out the decontamination work on the inner surface of the contaminated fluid storage pool after draining, which is required in the conventional contaminated fluid storage pool, in a short time, It is an object of the present invention to provide a method for protecting a contaminated fluid storage pool and a taping robot for the protection, which greatly reduces labor, time, and materials.

[0013]

In order to solve the above-mentioned problems, the method for protecting a contaminated fluid storage pool according to the present invention, as described in claim 1, stores the contaminated fluid before storing the contaminated fluid. A cover sealing material that protects the inside surface of the contaminated fluid storage pool is releasably attached to the inside surface of the pool, and after the sealing material for the cover is attached, the contaminated fluid is temporarily stored in the contaminated fluid storage pool and stored. After draining the contaminated fluid, the cover sealing material is peeled off from the inner surface of the contaminated fluid storage pool and collected to protect the inner surface of the contaminated fluid storage pool.

In order to solve the above-mentioned problems, a taping robot for protection and protection of a contaminated fluid storage pool according to the present invention, as described in claim 2, is a contaminated fluid storage pool capable of storing a contaminated fluid. It has a traveling carriage that is provided so as to be able to travel along the inside surface of the contaminated fluid storage pool, and a taping robot body that is provided so as to be able to move up and down on the traveling carriage. The taping robot body has a tape-shaped sealing material for the cover. The protective layer of the sealing material for a cover is formed on the inner surface of the contaminated fluid storage pool by being releasably attached to the inner surface of the contaminated fluid storage pool.

Further, in order to solve the above-mentioned problems, a taping robot for protecting a contaminated fluid storage pool according to the present invention has a taping robot main body for cleaning an inner surface of the contaminated fluid storage pool. Pool surface cleaning means, pool surface drying means for drying the inner surface of the contaminated fluid storage pool cleaned by this cleaning means, and tape-shaped cover sealing material attached to the inner surface of the contaminated fluid storage pool In the contaminated fluid storage pool, the cover sealing material storage means, the cover sealing material storage means sequentially supplying the cover sealing material stored in the storage means for sticking to the inner surface of the contaminated fluid storage pool. A cover sealing material pressing means for pressing the cover sealing material attached to the surface is provided.

Furthermore, in order to solve the above problems,
According to another aspect of the present invention, there is provided a taping robot for protecting a contaminated fluid storage pool, wherein the taping robot main body is reversibly attached to the traveling carriage, and the cover sealing material pressing means is attached in the inverted state. Is the cover sealing material peeling means for peeling the cover sealing material from the contaminated fluid storage pool, and the cover sealing material supply means is for collecting the cover sealing material peeled from the inner surface of the contaminated fluid storage pool. The cover sealing material collected by the cover sealing material collecting means is set to be stored in the cover sealing material storing means.

[0017]

According to the present invention having the above-mentioned structure, before the temporary storage of the contaminated fluid, the sealing material for the cover is releasably attached to the inner surface of the contaminated fluid storage pool to form the protective layer as the contaminated fluid storage pool. Since it is formed on the inner surface, the inside surface of the contaminated fluid storage pool is maintained in a clean state without being attacked, and it is unlikely that scales containing pollutants such as radioactive substances adhere to the inside surface of the contaminated fluid storage pool. Absent.

Further, a taping robot having a traveling carriage provided so as to be able to travel along the inside surface of the contaminated fluid storage pool and a taping robot main body provided on the traveling carriage so as to be able to move up and down is used. A pool surface cleaning means for cleaning the inner surface of the contaminated fluid storage pool, a pool surface drying means for drying the inner surface of the contaminated fluid storage pool cleaned by the cleaning means, and a tape attached to the inner surface of the contaminated fluid storage pool Sealing material for a cover that stores a sealing material for a cover, and a sealing material for a cover that sequentially supplies the sealing material for a cover stored in the storing means for sticking to the inner surface of the contaminated fluid storage pool. It has a supply means and a cover sealing material pressing means for pressing the cover sealing material attached to the inner surface of the contaminated fluid storage pool. Since, it is possible to adhere the working cover sealing material for contaminated fluid storage pool surface carried simply and easily in a short time.

Further, the taping robot body is
It is installed reversibly on the traveling vehicle, and when it is installed in the inverted state, the cover sealing material holding means peels the cover sealing material from the contaminated fluid storage pool to the cover sealing material peeling means and the cover sealing material supply means contaminates. The cover sealing material is configured to serve as a cover sealing material recovery unit that recovers the cover sealing material separated from the inner surface of the fluid storage pool, and the cover sealing material recovered by the cover sealing material recovery unit is stored in the cover sealing material. Since it is set to be stored in the means, the sealing material for the cover can be easily and easily recovered after the storage of the contaminated fluid in a short time, and it is difficult to attach the sealing material for the cover in the contaminated fluid storage pool. Since it is only necessary to locally decontaminate the uneven surface of the surface,
It is possible to greatly reduce the great effort, time, and materials required for decontamination work over the entire inner surface of the contaminated fluid storage pool after drainage, which has been conventionally required.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a reactor building of a boiling water reactor as a light water reactor to which the present invention is applied, and FIG.
FIG. 2 is a plan sectional view taken along line XX of the boiling water reactor shown in FIG. 1.

The reactor building 1 contains a reactor containment vessel 2, and the reactor containment vessel 2 contains a reactor pressure vessel 3.

A reactor well 4 is formed above the reactor pressure vessel 3, and a spent fuel storage pool 5 and a steam dryer steam-water separator pit 6 are arranged opposite to each other on both sides of the reactor well 4. Has been done.

A shield block 7 is arranged above the reactor well 4, and the shield well 7 closes the reactor well 4 during operation of the reactor. A watertight block 8 is installed at the communication port of the reactor well 4, the spent fuel storage pool 5, and the steam dryer steam separator pit 6, and is partitioned by the watertight block 8. A dry well head 9 is installed inside the reactor well 4, and the dry well head 9 separates the reactor well 4 from the lower dry well 10. The dry well 10 is formed in the reactor containment vessel 2. The reactor pressure vessel 3
The top of is closed by the reactor pressure vessel head 11.

On the other hand, an overhead crane 13 is installed above the operation floor 12 of the reactor building 1, and various overhead equipment and the like are hung and moved by the overhead crane 13 during periodic inspection of the nuclear reactor. Has become.

At the time of periodic inspection of the reactor, the shielding block 7
The drywell head 9 and the reactor pressure vessel head 11 are removed by an overhead crane 13 or the like. After the shielding block 7 and the dry well head 9 are removed, water (pure water) is temporarily put in the reactor well 4 and the steam dryer steam separator pit 6 which are contaminated fluid storage pools. There is.

The reactor well 4 is provided with a lining material 14 such as stainless steel on the inner surface of the concrete skeleton of the reactor building 1.
On the other hand, as shown in FIG. 3, an upper track 15 and a lower track 16 are fixedly or temporarily installed on the upper surface and the lower surface of the reactor well 4, respectively. The horizontal traveling of the taping robot 17 is guided.

The taping robot 17 is a reactor well 4
It is composed of a traveling carriage 18 that can travel on the upper orbit 15 and the lower trajectory 16 and a taping robot main body 19 that is supported by the traveling carriage 18 so as to be vertically movable. Traveling trolley 18
Is installed on the upper track 15 and the lower track 16, and is configured to be able to travel in the horizontal direction on these tracks 15 and 16 by the auxiliary equipment 20 for the traveling carriage. A tube hoisting drum 21 is attached to the traveling vehicle accessory equipment 20, and a utility supply tube 22 is freely sent out from the hoisting drum 21.

The taping robot main body 19 which is supported by the traveling carriage 18 so as to be able to move up and down is connected to the traveling carriage auxiliary equipment 20 via a utility supply tube 22.
As shown in FIG. 4, a taping robot body traveling mechanism 23 is provided on the side surface of the taping robot body 19,
The traveling mechanism 23 guides the taping robot main body 19 so that it can move up and down on the traveling carriage 18.

As shown in FIG. 4, the taping robot main body 19 has, in order from the bottom, a pool surface cleaning mechanism 24 for cleaning the lining material 14 on the inner surface of the contaminated fluid storage pool of the reactor well 4, and a cleaned lining. A pool surface drying mechanism 25 for drying the surface of the material 14 and a cover sealing material storage mechanism 2 for storing the cover sealing material 26 attached to the surface of the lining material 14 in a rolled state.
7, and a cover seal material supply mechanism 28 for sequentially supplying the stored cover seal material 26 to the surface of the lining material 14.
And a cover sealing material pressing mechanism 29 for pressing the supplied cover sealing material 26.

The pool surface cleaning mechanism 24 of the taping robot body 19 sprays the high temperature water or steam sent from the utility supply tube 22 toward the surface of the lining material 14 in a predetermined range, and the lining material 14. Cleaning roller 31 for contacting and cleaning the surface
And a wiper blade 32 for scraping excess moisture from the surface of the lining material 14.

The pool surface drying mechanism 25 is composed of a plurality of dry air injection nozzles 33 for injecting the dry air sent from the utility supply tube 22 toward the surface of the lining material 14 in a predetermined range.

Further, the cover sealing material supply mechanism 28
Is for attaching two cover sealing material supply rollers 34 for supplying the cover sealing material 26 to predetermined positions on the surface of the lining material 14 and for attaching the cover sealing material 26 to predetermined positions on the surface of the lining material 14. Compressed air injection nozzle 3
5 (for example, one in the center or a plurality in the radial direction).

Furthermore, the cover sealing material pressing mechanism 2
9 is a cover sealing material pressure roller 36 for pressing the cover sealing material 26 at a predetermined position on the surface of the lining material 14.
Have.

The cleaning roller 31 constituting the pool surface cleaning mechanism 24 and the cover sealing material pressure roller 36 constituting the cover sealing material pressing mechanism 29 are arranged so as to follow the arc shape inside the reactor well 4. As shown in FIG. 5, both ends are thin and the central portion has a large roller diameter.

Next, the work of protecting the reactor well 4 which is the contaminated fluid storage pool will be described.

This taping robot 17 is used at the time of periodic inspection of the nuclear reactor.
Prior to using 7, the shield block 7 and the dry well head 9 are moved to a predetermined position by using the overhead crane 13 at the time of periodic inspection of the reactor, and the reactor well 4 is opened.

Then, the traveling carriage 1 assembled in advance
8 is installed on the upper track 15 and the lower track 16 arranged on the upper surface and the lower surface of the reactor well 4 by using the overhead crane 13.

After that, the taping robot main body 19 in which the cover sealing material 26 is replenished in the cover sealing material storage mechanism 27 is installed on the guide rail (not shown) of the traveling carriage 18 via the taping robot main body traveling mechanism 23.

Then, the taping robot body 1 is remotely operated by using the taping robot body traveling mechanism 23.
9 is made to travel vertically along the guide rail (not shown) of the traveling carriage 18 from above to below, for example.

In the meantime, first, the taping robot main body 1
The pool surface cleaning mechanism 24 of 9 cleans the surface of the lining material 14, and then the pool surface drying mechanism 25 dries the surface of the lining material 14 in order to make the sticking of the cover sealing material 26 stronger. Next, the cover seal material supply mechanism 28 moves the cover seal material 26 to the lining material 14.
The cover sealing material 26 that has been attached to the surface is pressed by the cover sealing material pressing roller 36 of the cover sealing material pressing mechanism 29, and the cover sealing material 2
6 is firmly attached to the surface of the lining material 14.

In this manner, when the cover sealing material 26 is applied from the upper end to the lower end of the surface of the lining material 14, the taping robot main body 19 is collected on the upper end of the traveling carriage 18 by the taping robot main body traveling mechanism 23. .

After that, the traveling carriage 18 is moved to the next attachment position by the function of the traveling carriage auxiliary equipment 20 to the reactor well 4
It runs on the vertical orbits 15 and 16 along the circumferential direction of.

At this time, a position detecting mechanism (not shown) is attached to the taping robot main body traveling mechanism 23 and the traveling carriage accessory equipment 20, and by detecting its own location, it is possible to automatically reach a predetermined position. It is configured to run.

By repeating such an operation by remote control, the operation of attaching the cover sealing material 26 over the entire circumference of the surface of the lining material 14 of the reactor well 4 can be completed.

Then, the taping robot 17 is collected and stored at a predetermined position by using the overhead crane 13.

After that, water is filled in the reactor well 4 and the steam dryer steam separator pit 6, and the watertight block 8 is moved to a predetermined position by using the overhead crane 13, and the reactor well 4 and both sides thereof are moved. The spent fuel pool and steam dryer steam separator pit 6 located at

After that, in-core equipment (not shown) is inspected and fuel is exchanged. When inspecting the equipment in the reactor or refueling, the steam dryer or steam separator (not shown) housed in the reactor pressure vessel 3 uses the overhead crane 13 to separate steam dryer steam water through the reactor well 4. It is guided to the vessel pit 6 and stored in this pit 6 during the regular inspection work.

After the inspection such as the regular inspection work is completed,
The steam dryer and steam separator are returned to the reactor pressure vessel 3 to complete the periodic inspection work. After this, the watertight block 8 is returned to a predetermined position using the overhead crane 13, and then the reactor well 4 The water stored in the steam dryer steam-water separator pit 6 is drained.

After that, the taping robot 17 whose function is changed to recover the cover sealing material 26 is installed on the vertical orbits 15 and 16 of the reactor well 4 by using the overhead crane 13, and the cover sealing material 26 is recovered. I do.

At the time of collecting the cover sealing material 26, the taping robot body 19 is turned upside down and installed upside down on the traveling carriage 18 so that the reactor well 4
It is possible to simultaneously collect the cover sealing material 26 from the upper end to the lower end and clean the surface of the lining material 14.

In this case, the cover sealing material pressing mechanism 29
Is a cover seal material peeling mechanism 37 for peeling the cover seal material 26 from the lining material 14 on the inner surface of the contaminated fluid storage pool of the reactor well 4, and the cover seal material supply mechanism 28 is peeled from the surface of the lining material 14. Cover sealing material recovery mechanism 3 for recovering the cover sealing material 26
The cover sealing material 26 configured as 8 and collected by the cover sealing material collecting mechanism 38 is collected by the cover sealing material storing mechanism 27 as the cover sealing material storing means.

After that, the reactor pressure vessel head 11, the drywell head 9 and the shield block 7 are attached to the overhead crane 13
To restore the reactor well 4 to a predetermined position.

Also in the steam dryer steam-water separator pit 6, the lining material (not shown) on the inner surface of the pit 6 can be protected by the same method as in the reactor well 4.

Next, a supplementary explanation will be given of the operation of the pool surface cleaning mechanism 24, the pool surface drying mechanism 25, the cover seal material supplying mechanism 28, and the cover seal material holding mechanism 29 provided in the taping robot body 19. .

In the pool surface cleaning mechanism 24, first, the first stage cleaning of the surface of the lining material 14 is performed by high temperature water or steam sprayed obliquely downward from a plurality of spray nozzles 30 in a predetermined range. .

Next, the cleaning roller 31 cleans the surface of the lining material 14 in the second stage.

Then, the wiper blade 32 scrapes excess moisture from the surface of the lining material 14.

In the pool surface drying mechanism 25, dry air is jetted obliquely downward from a plurality of dry air jet nozzles 33 in a predetermined range to dry the surface of the lining material 14. By drying the surface of the lining material 14, the adhesive force of the cover sealing material 26 is enhanced.

Further, in the cover seal material supply mechanism 28, the cover seal material 26 is supplied from a space between the two cover seal material supply rollers 34 to a predetermined position on the surface of the lining material 14, and thereafter compressed air is jetted. The compressed air is jetted from the nozzle 35 from the center toward the periphery, so that the cover sealing material 26 is evenly attached to the surface of the lining material 14.

With the cover sealing material 26 adhered, the cover sealing material pressure roller 36 of the cover sealing material pressing mechanism 29 presses the cover sealing material 26 to a predetermined position on the surface of the lining material 14, Stick firmly.

Hot water, steam, dry air, compressed air, electric power, control signals and the like required by the taping robot body 19 are supplied through the utility supply tube 22.

When it is necessary to collect the cleaning waste water used for cleaning the surface of the lining material 14, a cleaning waste water collecting means can be attached to the lower part of the taping robot body 19 to deal with it.

Although the above-mentioned embodiments are described by taking the reactor well 4 and the steam dryer steam-water separator pit 6 of the boiling water nuclear power plant as an example, other embodiments will be described. It goes without saying that the facility of the present invention can be applied not only to a fluid mixed with a radioactive substance but also to a storage tank of a general industrial facility for temporarily storing a contaminated fluid such as other harmful chemical substances.

In addition, as a mechanism of the taping robot 17, the cover sealing material 26 is configured not only vertically but also horizontally, for example.
The application method can be adapted to the situation of the contaminated fluid storage pool.

Further, if the taping robot main body 19 and the traveling carriage 18 are controlled to interlock with each other using a computer, the cover sealing material 26 can be attached in any direction within the plane of the contaminated fluid storage pool. It is also possible.

Furthermore, the taping robot 17 is provided with a cleaning function for the surface of the contaminated fluid storage pool and a sealing material 26 for the cover.
It is also possible to simplify the function and the configuration of the taping robot 17 by separately configuring the attaching function and the collecting function of.

As an example of the sealing material 26 for the cover, a sheet-like pulp is used as a material, and an adhesive which is easily removable (adhesive having a strong adhesive force and which can be peeled off neatly after application) is applied to one surface thereof. The other surface may be coated with a material having water resistance such as vinyl.

Furthermore, by adopting a flammable material for the cover sealing material 26, the recovered cover sealing material 26 can be easily incinerated by using an incinerator installed in the power plant. be able to.

[0070]

As described above, according to the method for protecting a contaminated fluid storage pool and the taping robot for protecting the same according to the present invention, the contaminated fluid storage pool inner surface is protected before the contaminated fluid is temporarily stored. Since the sealing material for the cover was peelably attached and the protective layer was formed on the inner surface of the contaminated fluid storage pool, the inner surface of the contaminated fluid storage pool was maintained in a clean state without being attacked, and radioactive materials were used as in the past. The scale containing pollutants such as does not adhere to the surface inside the contaminated fluid storage pool.

Further, a taping robot having a traveling carriage provided so as to be able to travel along the inner surface of the contaminated fluid storage pool and a taping robot main body provided on the traveling carriage so as to be movable up and down is used. A pool surface cleaning means for cleaning the inner surface of the contaminated fluid storage pool, a pool surface drying means for drying the inner surface of the contaminated fluid storage pool cleaned by the cleaning means, and a tape attached to the inner surface of the contaminated fluid storage pool Sealing material for a cover that stores a sealing material for a cover, and a sealing material for a cover that sequentially supplies the sealing material for a cover stored in the storing means for sticking to the inner surface of the contaminated fluid storage pool. It has a supply means and a cover sealing material pressing means for pressing the cover sealing material attached to the inner surface of the contaminated fluid storage pool. Since, it is possible to adhere the working cover sealing material for contaminated fluid storage pool surface carried simply and easily in a short time.

Further, the taping robot body is
It is installed reversibly on the traveling vehicle, and when it is installed in the inverted state, the cover sealing material holding means peels the cover sealing material from the contaminated fluid storage pool to the cover sealing material peeling means and the cover sealing material supply means contaminates. The cover sealing material is configured to serve as a cover sealing material recovery unit that recovers the cover sealing material separated from the inner surface of the fluid storage pool, and the cover sealing material recovered by the cover sealing material recovery unit is stored in the cover sealing material. Since it is set to be stored in the means, the sealing material for the cover can be easily and easily recovered after the storage of the contaminated fluid in a short time, and it is difficult to attach the sealing material for the cover in the contaminated fluid storage pool. Since it is only necessary to locally decontaminate the uneven surface of the surface,
It is possible to greatly reduce the great effort, time, and materials required for decontamination work over the entire inner surface of the contaminated fluid storage pool after drainage, which has been conventionally required.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a boiling water reactor to which the present invention is applied.

FIG. 2 is a plan sectional view taken along line XX of the boiling water reactor shown in FIG.

FIG. 3 is a basic configuration schematic diagram showing an embodiment of a taping robot according to the present invention.

FIG. 4 is a schematic diagram of a basic configuration showing an embodiment of a taping robot main body according to the present invention.

FIG. 5 is a schematic external view showing an embodiment of a roller which is an accessory of the taping robot body according to the present invention.

[Explanation of symbols]

 1 Reactor Building 2 Reactor Containment Vessel 4 Reactor Well 6 Steam Dryer Steam-Water Separator 7 Shielding Block 8 Watertight Block 13 Overhead Crane 14 Lining Material 15 Upper Track 16 Lower Track 17 Taping Robot 18 Traveling Cart 19 Taping Robot Main Body 23 Taping robot main body traveling mechanism 24 Pool surface cleaning mechanism 25 Pool surface drying mechanism 26 Cover sealing material 27 Cover sealing material storage mechanism 28 Cover sealing material supply mechanism 29 Cover sealing material pressing mechanism 31 Cleaning roller 36 Cover sealing pressure bonding roller

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location C02F 1/00 U

Claims (4)

[Claims] 1. A sealant for a cover that protects the inner surface of the contaminated fluid storage pool is releasably attached to the inner surface of the contaminated fluid storage pool before the contaminated fluid is stored, and the contaminated fluid is attached after the sealing material is attached. It is necessary to temporarily store the contaminated fluid in the storage pool, drain the stored contaminated fluid, and then remove the cover sealing material from the inner surface of the contaminated fluid storage pool to recover it and protect the inner surface of the contaminated fluid storage pool. A method for protecting a contaminated fluid storage pool, which is characterized. 2. A contaminated fluid storage pool capable of storing a contaminated fluid, a traveling carriage provided along the inner surface of the contaminated fluid storage pool so as to be freely movable, and a taping robot main body provided on the traveling carriage so as to be able to move up and down. This taping robot body has a tape-shaped cover sealing material that is peelably attached to the inner surface of the contaminated fluid storage pool to form a protective layer of the cover sealing material on the inner surface of the contaminated fluid storage pool. A taping robot for protecting a contaminated fluid storage pool. 3. The taping robot main body comprises: a pool surface cleaning means for cleaning the inner surface of the contaminated fluid storage pool; a pool surface drying means for drying the inner surface of the contaminated fluid storage pool cleaned by the cleaning means; and the contaminated fluid. A cover sealing material storage means for storing a tape-shaped sealing material for a cover to be attached to the inner surface of the storage pool, and a sealing material for the cover stored in the storage means are attached to the inner surface of the contaminated fluid storage pool. 3. The contaminated fluid storage pool according to claim 2, further comprising: a cover sealing material supply means for sequentially supplying the cover sealing material and a cover sealing material pressing means for pressing the cover sealing material attached to the inner surface of the contaminated fluid storage pool. Protection taping robot. 4. The taping robot main body is reversibly attached to a traveling carriage, and the cover sealing material pressing means detaches the cover sealing material from the contaminated fluid storage pool when the cover is attached in the inverted state. In addition, the cover sealing material supplying means is configured to be a cover sealing material collecting means for collecting the cover sealing material separated from the inner surface of the contaminated fluid storage pool, and the cover sealing material collecting means collects the cover sealing material. The taping robot for protecting a contaminated fluid storage pool according to claim 3, wherein the cover sealing material is set to be stored in the cover sealing material storage means.