JP5916445B2 - Aquarium lining material repair device and aquarium lining material repair method - Google Patents

Description

  The present invention relates to a tank lining material repair device and a water tank lining material repair method, and more particularly to an improvement in a technique for recovering a repaired body peeled from a water tank lining material after repair from water.

Conventionally, there is a water tank in which a lining material is provided on the surface of a foundation.
For example, in a nuclear power plant, a spent fuel storage pool (SFP) is used to store spent fuel. The spent fuel storage pool (SFP) is a large aquarium having a depth of about 12 m and a width and length of 10 to 20 m, respectively. Water is stored almost completely for safe storage of fuel.

In the water tank, for example, a stainless steel lining material is bonded to the surface of a concrete base. The aquarium needs preventive maintenance and repair of the lining material because the lining material may be damaged with long-term use.
In order to perform preventive maintenance and repair of the lining material of the water tank, there is a technique using an underwater curable adhesive (see, for example, Patent Documents 1 and 2).
However, in SFP, where it is an essential safety requirement to immerse spent fuel in water, repair work in water is unavoidable, but because of the high radiation dose, repair by remote control is unavoidable. I do not get. Furthermore, since the water depth of the pool is 15 m at the maximum, the adhesive is difficult to spread (becomes a spherical dumpling) due to water pressure near the pool floor surface, and construction difficulties are assumed.
Therefore, with regard to the underwater curable adhesive, a press-fitting filling method has attracted attention (for example, see Patent Document 3).

JP 2003-156586 A JP 2003-155466 A JP 2008-216201 A

By the way, although the repair method using the repair body which consists of the said adhesive agent is a very excellent repair method, a repair body may peel from a lining material after repair.
When the repaired body peels from the lining material, the repaired body itself becomes a foreign substance in the SFP. Therefore, the repaired body must be reliably recovered in the SFP.
Here, in SFP, the repair body had to be recovered in water. Moreover, it is preferable to enter the SFP easily, and a long-time operation with the SFP is not preferable.
For this reason, the recovery of the repair body with SFP needs to be performed more easily than the collection of foreign matter in a general water tank.

Conventionally, in the case of a general aquarium, it is conceivable to use a camera or a robot in order to search and collect foreign substances in the water.
However, even if a camera or a robot is used, in the case of a large aquarium such as SFP, it is difficult to search for and recover the repaired body. Further, as in the case of SFP, exploration in water is difficult. In particular, when a structure such as spent fuel is stored in the water tank as in SFP, it is difficult to find and collect the repaired body using a camera or a robot.
Thus, if the technique used for a general water tank is used as it is for the recovery of a repair body in a special water tank such as SFP, it is difficult to recover the repair body with satisfactory satisfaction.
Therefore, in this type of technical field, there is an urgent need to develop a technology that can more reliably and easily perform repair work for repair bodies with a simple configuration than foreign object recovery in a general water tank. It was.
However, conventionally, there has been no technology that can solve this problem. Moreover, conventionally, the cause of the repair body made of the adhesive peeling from the lining material has also been unknown.

  The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is to recover the repaired body peeled off from the tank lining material after repair with a simple configuration more reliably and easily. It is providing the tank lining material repair apparatus and the tank lining material repair method.

  As a result of intensive studies on the above problems by the present inventors, the repaired body is peeled from the repaired lining material by setting the structure of the repaired body in advance to a structure suitable for recovery in the water in the water tank. However, the present inventors have found that the repaired body that has been peeled off can be reliably and easily recovered with a simple configuration, thereby completing the present invention.

That is, in order to achieve the above object, the tank lining material repair device according to the present invention is a water tank lining material repair device for repairing a defective portion of the lining material lined on the inner wall surface of the water tank, A repair body and a recovery string body are provided, and when the repair body peels off from the lining material after repair, the peeled repair body is recovered using the recovery string body. .
Here, the repair body is made of an adhesive fixed to the surface of the lining material at the defective portion.
The recovery string has a repair body side end fixed to the repair body and a work side end fixed at a position external to the water in the water tank.

In the present invention, it is preferable to provide a fixing tool.
Here, the fixing tool is fixed to the repair body, and the repair body side end of the recovery string is fixed.
In the present invention, it is preferable that the fixing tool is a filling nozzle used when filling the adhesive forming the repair body.
Here, the filling nozzle refers to a nozzle including an insertion nozzle provided at the tip of the filling nozzle.

In the present invention, it is preferable to include a detecting means.
Here, the detection means is provided at a work-side end portion of the recovery string body, and detects that the repair body has peeled from the lining material.

In addition, in order to achieve the above object, the tank lining repair method according to the present invention uses a submerged curable adhesive to detect a defective portion of the liner that is lined on the inner wall surface of the tank. A tank lining material repair method to repair,
A frame body installation step of installing a frame body that is configured in advance from the same underwater curable adhesive as the underwater curable adhesive on the surface of the lining material at the defect location;
The underwater-curing type is provided in a state where a fixing tool in which a recovery string is fixed is placed in a recess space formed between the lining material and the frame, provided at a subsequent stage of the frame installation step. A filling step of filling the adhesive;
When the repair body solidified by the underwater curable adhesive filled in the filling step is peeled off from the lining material, the peeled repair body can be recovered using the recovery string. Further, the repair body is configured in advance.

  In the present invention, in the filling step, an insertion nozzle that is a tip of a filling nozzle that fills the recessed space formed between the lining material and the frame with the underwater curable adhesive is fixed. It is preferable that the insertion nozzle is cut from the filling nozzle after being inserted as a tool and the underwater curable adhesive is solidified, and the insertion nozzle is placed in the repair body as the fixing tool.

In addition, as a material of the string body for collection | recovery of this invention, the same material as a lining material is preferable, and the product made from SUS is mentioned as an example.
Examples of the form of the string for recovery according to the present invention include a wire and a chain.
As the length of the string for recovery of the present invention, for example, when the repair body fixed to the side wall of the lining material peels, it is particularly preferable that the length of the repair body does not fall to the bottom wall of the lining material. When the repair body fixed to the material bottom wall peels, it is preferable that the repair body has a length that does not move beyond a predetermined range of the lining material bottom wall.

Since this invention is provided with the said structure, even if a repair body peels from a lining material after repair, the peeled repair body can be reliably and easily collect | recovered by simple structure.
Moreover, this invention can collect | recover the peeled repair body more reliably and easily from water by providing a fixing tool.
According to the present invention, since the fixing tool is a filling nozzle used when filling the adhesive forming the repair body, a simpler configuration can be obtained.
Since this invention can detect that the repair body has peeled more easily and reliably by providing the said detection means, recovery | restoration of a repair body can be performed more easily and reliably.

It is explanatory drawing of schematic structure of the tank lining material repair apparatus concerning one Embodiment of this invention. It is explanatory drawing of the cause of repair body peeling specified by the present inventors. It is explanatory drawing of an effect | action of the tank lining material repair apparatus shown in the said FIG. It is explanatory drawing of the fixing tool characteristic in the tank lining material repair apparatus shown in the said FIG. It is explanatory drawing of the modification of the fixing tool shown in the said FIG. It is explanatory drawing of the modification of the fixing tool shown in the said FIG. It is explanatory drawing of the suitable installation method of the fixing tool shown in the said FIG. FIG. 2 is an assembly diagram of a frame suitable for obtaining a repair body of the tank lining material repair device shown in FIG. 1. FIG. 2 is an exploded view of a frame suitable for obtaining a repair body of the tank lining material repair device shown in FIG. 1. It is explanatory drawing of the frame body installation process suitable for obtaining the repair body of the water tank lining material repair apparatus shown in the said FIG.

Hereinafter, embodiments of the present invention will be described in detail.
<First embodiment>
FIG. 1 shows a schematic configuration of a tank lining material repair device according to a first embodiment of the present invention. FIG. 4A is an overall view of the aquarium liner repairing device according to the present embodiment, and FIG. 4B is an enlarged view of the vicinity of a repaired body characteristic of the aquarium liner repairing device.
In the present embodiment, an example is described in which the repairing body is recovered by a recovery string fixed to the insertion nozzle, assuming an insertion nozzle that is the tip of the filling nozzle as the fixing tool.
The tank lining material repair device 10 shown in FIG. 1 includes a repair body 12, a fixing tool 14, and a collection string body 16.

Here, the repair body 12 is made of an underwater curable adhesive, and is fixed to a defective portion of the SUS lining material 20 lining the inner wall surface 18 of the concrete water tank.
Further, the fixing tool 14 is fixed to the repair body 12 and the repair body side end portion 16a of the recovery string body 16 is fixed.
In the present embodiment, the fixing tool 14 includes a plastic insertion nozzle 15 a that is a tip of a filling nozzle used when filling the underwater curable adhesive forming the repair body 12. A hook 22 is provided on the insertion nozzle 15a.
The recovery string 16 is made of, for example, a SUS wire or chain, has a repair body side end 16a fixed to the hook 22, and is fixed at a position (in the air) that is external to the water 23 of the aquarium. It has a work side end 16b.

In this embodiment, it is preferable to provide detection means for detecting that the repaired body has peeled from the repaired lining material in order to make the tank lining material repair into an apparatus.
Therefore, in this embodiment, it is preferable that the water lining material repair device 10 further includes a detection unit 24 and a holding unit 25.
The detection means 24 includes, for example, a sensor unit 26 such as a load sensor and an output unit 27, and the sensor unit 26 is provided at the work side end 16 b of the collection string 16.
In the holding means 25, the work side end 16 b of the collection string 16 is fixed via the sensor unit 26. When the output unit 27 determines that the repair body 12 is peeled off based on the information from the sensor unit 26, the holding unit 25 can also automatically wind up the collection string 16. Thereby, the holding means 25 can automatically pull up the repair body 12 from the water 23 via the string 16 for recovery.

  Thus, since the tank lining material repair apparatus concerning this embodiment was provided with the said structure, even if a repair body peels from the lining material after repair, this repair body which peeled is used as a repair body. With a simple configuration of a collection string provided in advance, it can be easily and reliably collected.

The effect of the present invention is based on the identification of the cause of repair body peeling, which has been unknown in the past.
That is, conventionally, it was thought that the cause of the repair body peeling from the repaired lining material was the repair method itself at the time of repair.
For this reason, in the past, attention has been directed to improving the repair method at the time of repair in order to reduce peeling of the repair body.
However, as a result of intensive studies on the cause of the peeling, the present inventors have found that the cause of the peeling is as follows.
That is, the present inventors have identified that the repair body peels from the repaired lining material mainly due to the properties of the lining material.
That is, as shown in FIG. 2A, the repair body 12 is firmly fixed to the lining material 20 when the repair is completed.
However, the lining material 20 is made of, for example, stainless steel (SUS). The lining material 20 is fixed to the concrete base at several points.
Due to the temperature change of the water, the lining material 20 tends to expand and contract with the fixed portion between the concrete base of the aquarium and the lining material as a fulcrum.
Here, the lining material 20 tends to expand and contract, but cannot expand and contract together with the concrete base. For this reason, the lining material 20 may warp as shown in FIG.
The repairing body 12 receives the bending force from the lining material 20 at that time, and the repairing body 12 peels from the lining material 20 as shown in FIG.

As a result of having identified that the cause of peeling of the repaired body is due to the properties of the lining material, in the repair field of SFP, recovery when the repaired body peels after repair is also very important. For the first time, the present inventors have noticed.
Here, as a method of recovering the repaired body that has been peeled off, it is conceivable to search for and recover the repaired body using a camera or a robot. However, since the exploration of the repair body is difficult, the recovery is also very difficult.
In a large aquarium, exploration of a repaired body is more difficult than in the case of a general aquarium, so it has not been adopted as a means for solving the above problem.

As a result of intensive studies on the means for solving the above problems, the present inventors are able to easily and reliably recover the peeled repaired body even if the repaired body peels from the repaired lining material. The present inventors have found that it is very important to construct a repair body in advance, and have completed the present invention.
For this reason, in the present embodiment, when repairing the lining material of the water tank, the insertion nozzle in which the repair body side end of the recovery string body is fixed to the repair body made of the underwater curable adhesive is fixed in advance. It is provided as a tool, and the working side end of the string for recovery is fixed to the holding means at a position that is external to the water in the water tank.

The tank lining material repair device 10 according to the present embodiment is configured as described above, and the operation thereof will be described below.
Since the repair body 12 according to the present embodiment has the above-described configuration, even if the repair body 12 is peeled off from the lining material 20, the peeled repair body 12 is pulled up via the recovery cord body 16. Therefore, it can be easily and reliably collected.

The operation of the present embodiment will be described more specifically with reference to FIG. FIG. 3 shows a state where the repair body 12 is peeled off.
As shown in the figure, when the repair body 12 peels from the lining material 20, the repair body 12 starts to descend in the water 23.
Here, since the work side end portion 16b of the recovery cord body 16 is fixed to the holding means 25, the repair body 12 shown in the figure has a predetermined length determined according to the length of the recovery cord body 16. Although it sinks to the depth, the lowering of the repair body 12 is stopped at a predetermined depth. In this manner, the depth direction position of the repair body 12 can be held at a predetermined depth position.
Thus, when the repair body 12 is fixed to the lining material 20, the recovery string body 16 that has drooped loosely is stretched when the repair body 12 is peeled off.
In the present embodiment, the repair body 12 is fixed to the lining material 20 or the repair body 12 is peeled off from the lining material 20 based on the change in the tensile force of the recovery string 16. Judging whether it is in a state.
That is, the output unit 27 is in a state where the repair body 12 is fixed to the lining material 20 based on a change in tensile force information from the sensor unit 26, or the repair body 12 is peeled from the lining material 20. Judging whether it is in a state.
For example, in a state where the repair body 12 is peeled from the lining material 20, the tensile force detected by the sensor unit 26 is larger than in a state where the repair body 12 is fixed to the lining material 20.
For this reason, the output part 27 judges that the repair body 12 has peeled from the lining material 20 when the change of the tensile force detected by the sensor part 26 is more than a predetermined threshold value.
On the other hand, when the change in the tensile force detected by the sensor unit 26 is less than the predetermined threshold, the output unit 27 determines that the repair body 12 is fixed to the lining material 20.
When the output unit 27 determines that the repair body 12 is peeled from the lining material 20, the output unit 27 outputs, for example, sound, light, a signal, and the like to notify the outside of the peeling.
When the output unit 27 determines that the repair body 12 is peeled from the lining material 20, the output unit 27 instructs the holding means 25 to pull up the collection string 16.
The holding means 25 winds up the collection string 16 based on an instruction from the output unit 27, whereby the repair body 12 can be collected out of the water 23 (in the air).

The effects of the present embodiment can be obtained by using a fixing device characteristic of the present invention.
Hereinafter, a preferred configuration of the fixing tool will be described more specifically.
That is, when repairing a defective portion of the lining material, a frame is installed on the lining material. When a frame is installed on the lining material, a recessed space is formed between the lining material and the frame. In order to fill the recessed space with the underwater curable adhesive, the filling nozzle is lowered to start filling the recessed space.
As shown in FIG. 4A, the plastic insertion nozzle 15a is provided at the tip of the filling nozzle 15b. A collection string 16 is provided on the hook 22 of the insertion nozzle 15a. An underwater curable adhesive 29 is filled into the recessed space 28 from the insertion nozzle 15a.

After filling and solidifying the underwater curable adhesive 29, the filling nozzle 15b is retreated upward, but before the retraction of the filling nozzle 15b is started, the insertion nozzle 15a is cut from the filling nozzle 15b.
As a result, when the filling nozzle 15b is withdrawn upward, as shown in FIG. 4B, only the insertion nozzle 15a as a fixing tool, together with the recovery string 16, forms an underwater-curing adhesive. Indwelled in agent 29.
Thus, by using the insertion nozzle 15a of the filling nozzle as the fixing tool, the fixing tool can be easily fixed to the repaired body.

<Modification>
In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible within the range of the summary of invention.

<Fixing device>
For example, it is also preferable to use the following as the fixing device of the present invention.
That is, in the above-described embodiment, an example of a fixing tool that is very easy to fix to the repair body has been described, but in order to more reliably prevent the fixing tool from coming out of the repair body, as a fixing tool, It is also preferable to use those.

<Second embodiment>
FIG. 5 shows a fixing device according to the second embodiment of the present invention. In addition, the code | symbol 100 is added to the part corresponding to said 1st embodiment, and description is abbreviate | omitted.
The fixing tool 114 shown in FIG. 5A is provided with a plate-like hook 131 having a plurality of holes 130 on the side of the insertion nozzle 115a.
The fixing tool 114 shown in FIG. 5B is provided with an inverted L-shaped hook 132 on the side of the insertion nozzle 115a.
The fixing device 114 shown in FIG. 5C is provided with a hook portion 134 having a substantially square shape on the side of the insertion nozzle 115a.

  Thus, by providing the hooking portion 131, the hooking portion 132, and the hooking portion 134 to the insertion nozzle 115a as the fixing tool, the fixing tool can be more reliably fixed to the repair body. As a result, when the repair body is recovered by the recovery cord body, it is possible to more reliably prevent the fixing tool from being removed from the repair body, so that the repair body can be recovered more reliably.

<Third embodiment>
FIG. 6 shows a schematic configuration of the fixing device according to the third embodiment of the present invention. FIG. 6 (A) is a perspective view of the entire repair body, and FIG. 6 (B) is the entire repair body. FIG. 2C is an enlarged view of the fixing device. In addition, the code | symbol 200 is added to the part corresponding to said 1st embodiment, and description is abbreviate | omitted.

The fixing tool 214 of the present embodiment is a plate having a perforated structure.
As shown in the perspective view of FIG. 5A and the longitudinal cross-sectional view of FIG. 5B, the fixing tool 214 of the present embodiment has a part (upper part) of the fixing tool 214 from the upper part of the repair body 212. As shown, it is fixed to the repair body 212.
Further, the fixing tool 214 is fixed at the center of the repair body 212 as shown in FIGS.
The fixing device 214 of the present embodiment is a plate-shaped fixing device having a perforated structure in which a plurality of holes 236 are formed, as shown in FIG. A cord body 216 is provided.
Note that the fixing device of the present embodiment is made of, for example, glass, FRP, punching metal, SUS, or lath net that does not deteriorate with radiation.

  As described above, by using the plate-shaped fixing tool 214 having a perforated structure as the fixing tool, the underwater curing adhesive enters the hole 236 of the fixing tool 214 during the filling process. The fixing tool 214 can be fixed more firmly. Thereby, when a repair body falls from a repair location after repair, it can prevent more reliably that a fixing tool will come out of a repair body when pulling up the fallen repair body.

Various methods are conceivable as a method of providing the fixing device of the present embodiment on the repair body, but the following method is particularly preferable.
That is, as shown in FIG. 7, the inner surface of the frame body 238 filled with the underwater curable adhesive is provided with a slit 240 in the center, and the fixing device 214 of the present embodiment from above the frame body 238. Is fitted along the slit 240.
As a result, the fixing tool 214 can be more easily and reliably provided at the center of the frame 238 with respect to the frame 238.
In this way, the frame body 238 provided with the fixing device 214 is placed on the lining material and filled with the underwater curable adhesive.
As described above, since the frame body 238 provided with the fixing tool 214 in advance is installed on the lining material, the fixing tool 214 can be easily installed on the frame body 238.
After installation of such a frame 238, the frame 238 is filled with an underwater curing type adhesive.

Here, the fixing tool 214 is securely fitted into the slit 240 of the frame body 238. For this reason, when the underwater curable adhesive is filled in the frame 238, the position of the fixing tool 214 with respect to the frame 238 is determined from the center of the frame 238 even if the fixing tool 214 receives the pressure of the underwater curable adhesive. Shifting to the end of the frame body 238 can be reliably prevented. As a result, the fixing tool 214 can be reliably positioned at the center of the completed repair body.
Since the fixing tool 214 can be reliably positioned in the center of the repair body 212, the fixing tool 214 can be firmly fixed to the repair body 212. Accordingly, the repair body 212 can be easily and reliably pulled up through the fixing tool 214 fixed to the repair body 212 and the recovery string body 216 fixed to the hole 236 of the fixing tool 214. The body 212 can be collected more easily and reliably.

<Repair body>
In this embodiment, as a repair body composed of an underwater curable adhesive, a frame made of the same adhesive as the underwater curable adhesive to be filled is filled with the underwater curable adhesive. A solidified product is particularly preferable.
The following is particularly preferable as the frame when filling the underwater curable adhesive.
FIG. 8 shows the frame body 238 when the underwater curable adhesive is filled.
As shown in the figure, the frame 238 when filling with the underwater curable adhesive is composed of a partition section 238a prepared in advance with the same underwater curable adhesive as the underwater curable adhesive, and an elastic member. The elastic body 238b which deform | transforms and the pressing body 238c comprised, for example from stainless steel (SUS) are provided.
Here, the partition section 238 a is installed on the lining material 220. Thereby, the recessed space 228 filled with the underwater curable adhesive is formed between the lining material 220 and the partition section 238a.
Moreover, the elastic body 238b is installed on the outer surface of the partition partition body 238a so as to cover the partition partition body 238a.
The pressing body 238 c is installed on the outer surface of the elastic body 238 b so as to press the elastic body 238 b toward the lining material 220.

<Frame body>
Hereinafter, the frame body will be described more specifically with reference to FIG.
FIG. 9 is an exploded perspective view of the frame body of the present embodiment. In addition, the figure (A) shows a partition division body, the figure (B) shows an elastic body, and the figure (C) shows a pressing body.
As shown in FIG. 6A, the partition section 238a has a substantially U-shaped cross section, has a bottom at the bottom, and has an opening into which the filling nozzle and the insertion nozzle can be inserted at the top. .
The partition section 238a is preliminarily configured from the same underwater-curing adhesive as the underwater-curing adhesive that is filled in the recessed space formed between the lining material.
In addition, in this embodiment, the case where the lining material currently lined on the water tank side surface is repaired is assumed. For this reason, the said thing is used as a partition division body.

As shown in FIG. 5B, the elastic body 238b has a substantially U-shaped cross section, and has an opening in the lower part and an opening in the upper part.
As a material of the elastic body 238b, it is preferable to use a material having releasability from the partition section 238a.
As shown in FIG. 5C, the pressing body 238c has a substantially U-shaped cross section, and has an opening in the lower part and an opening in the upper part.

<Frame body installation process>
Hereinafter, the suitable installation process of the said frame is demonstrated, referring FIG.
The frame body installation process shown in the same figure includes the partition body installation process shown in FIG. 1A, the elastic body installation process shown in FIG. 1B, and the pressing body installation process shown in FIG. Prepare.

Here, in the partition body installation step, the partition partition body 238a is installed on the lining material 220 so as to cover the defective portion 242 of the lining material 220, as shown in FIG. When the partition section 238a is installed in the lining material 220, a recessed space 228 is formed between the lining material 220 and the partition section 238a. After installing the partition section 238a, an elastic body installation step is performed.
In the elastic body installation step, the elastic body 238b is installed on the outer surface of the partition partition body 238a so that the elastic body 238b covers the partition partition body 238a, as shown in FIG. After the elastic body 238b is installed, a pressing body installation process is performed.
In the pressing body installation step, as shown in FIG. 5C, the pressing body 238c presses against the outer surface of the elastic body 238b so as to press the elastic body 238b toward the lining material 220 (rightward in the figure). The body 238c is installed.
When the pressing body 238c is thus installed on the outer surface of the elastic body 238b, the elastic body 238b is pressed toward the lining material 220. Thereby, the elastic body 238b is deformed along the shape of the lining material 220. In this way, after the pressing body 238c is installed, the filling step is performed.

  That is, in the tank lining material repair device, the pressing body 238c presses the elastic body 238b against the lining material 220, with respect to the recessed space 228 formed between the lining material 220 and the partition section 238a. From above, an insertion nozzle which is the tip of the filling nozzle is inserted, and the filling process of the present invention is performed.

  After filling and solidifying the underwater curable adhesive, the elastic body 238b and the pressing body 238c are finally recovered by the recovery means, and the repair body of the present invention is completed.

  The present invention can be applied to all water tanks lined with a lining material, but is particularly preferably applied to repair of a water tank lining material present in the lining material of a light water reactor plant or a spent fuel pool.

DESCRIPTION OF SYMBOLS 10 Water tank lining material repair apparatus 12,212 Repair body 14,114,214 Fixing tool 16,216 String body for collection | recovery

Claims (6)

A tank lining material repair device for repairing a defective portion of a lining material lined on the inner wall surface of the tank,
A repair body made of an adhesive fixed to the surface of the lining material at the defect location,
A recovery string body having a repair body side end fixed to the repair body and a work side end fixed at a position that is external to the water in the water tank,
And when the repaired body is peeled from the repaired lining material, the peeled repaired body is recovered using the recovery string.   The water tank lining material repair device according to claim 1, further comprising a fixing tool fixed to the repair body and fixed to the repair body side end of the string for recovery. The water tank lining material repair device according to claim 2 , wherein the fixing tool is a filling nozzle used when filling the adhesive forming the repair body.   The detection means which detects that the said repair body peeled from the said lining material was provided in the operation | work side edge part of the said string for collection | recovery, The Claim 1 characterized by the above-mentioned. Tank lining repair equipment. A tank lining material repairing method for repairing a defective portion of the lining material lined on the inner wall surface of the water tank underwater using an underwater curing type adhesive,
A frame body installation step of installing a frame body that is configured in advance from the same underwater curable adhesive as the underwater curable adhesive on the surface of the lining material at the defect location;
The underwater-curing type is provided in a state where a fixing tool in which a recovery string is fixed is placed in a recess space formed between the lining material and the frame, provided at a subsequent stage of the frame installation step. A filling step of filling the adhesive;
When the repair body solidified by the underwater curable adhesive filled in the filling step is peeled off from the lining material, the peeled repair body can be recovered using the recovery string. In addition, the repairing method is characterized in that the repair body is configured.   In the filling step, an insertion nozzle that is a tip of a filling nozzle that fills the underwater curing adhesive is inserted into the recessed space formed between the lining material and the frame as the fixing tool, The water tank according to claim 5, wherein after the underwater curable adhesive is solidified, the insertion nozzle is cut from the filling nozzle, and the insertion nozzle is placed in the repair body as the fixing tool. Upholstery repair method.

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