JP5199980B2 - Inspection method and inspection tool for foam fire extinguishing equipment - Google Patents

Description

  The present invention relates to an inspection method and an inspection tool for foam fire extinguishing equipment, and more particularly, an inspection method for foam fire extinguishing equipment including a step of extinguishing foams for fire extinguishing at the time of inspection with an antifoaming agent, and an inspection tool used therefor About.

  The foam fire extinguishing equipment in various buildings is regularly inspected for release. In this inspection, since it is necessary to check the state of the released bubbles, it is obliged to actually release the bubbles and perform the inspection.

  The fire extinguishing foam released by the foam fire extinguishing equipment is not easily extinguished in a natural state, and it takes time to recover the foam, so that there is a problem that the discharge inspection cannot be performed efficiently.

  Therefore, when the fire extinguishing foam is actually released by the foam fire extinguishing equipment, such as during inspection, the fire extinguishing foam is treated with an oil-based or silicon-based liquid, or an extinguishing agent containing a foaming agent having antifoaming properties. A technique for defoaming using a foaming agent (see, for example, Patent Document 1) may be used.

JP-A-61-97009

  In the technology of defoaming a fire extinguishing foam using the conventional antifoaming agent, the defoaming mechanism by the antifoaming agent has a regular molecular structure of a hydrophobic group and a hydrophilic group stabilizing the foam film. It is considered that the foam film is partially broken by the intrusion of the antifoaming agent and the foam film is destabilized, whereby the foam film is easily broken.

  Foam fire extinguishing equipment emits low-expansion foam with low expansion ratio (generally 20 times or less), and high-expansion with high expansion ratio (generally 80 to less than 1000 times). Some fire-fighting foams release low-expansion fire extinguishing foams, but the foam diameter is small, and the molecular structure of the hydrophobic and hydrophilic groups that stabilize the foam film is dense. When the foam for fire extinguishing is defoamed with the conventional defoaming agent, the defoaming agent hardly penetrates into the foam film, and it is difficult to break down the molecular structure of the hydrophobic group and the hydrophilic group that stabilize the foam film. Is difficult to destabilize, and the defoaming effect of the defoaming agent is low.

  That is, in the technique of defoaming a fire extinguishing foam using the conventional antifoaming agent, there is a problem that the defoaming effect may be low for a low expansion fire extinguishing foam.

  Further, in the technology of treating fire extinguishing foam using the conventional antifoaming agent, the residue of the foam for fire extinguishing after the defoaming treatment remains in a liquid state, and it is said that recovery is not easy. There is also a problem.

  In view of the above circumstances, the present invention is a method for inspecting foam extinguishing equipment including a step of extinguishing a foam for extinguishing with an antifoaming agent, and even when extinguishing a low-expansion extinguishing foam, It is intended to provide a method for obtaining a high defoaming effect even when extinguishing the foam for fire extinguishing, and to provide a method for easily collecting the residue after the defoaming treatment of the foam for fire extinguishing. An object is to provide an inspection tool used in the method.

The present invention relates to a method for inspecting a foam fire extinguisher equipped with a foam discharge means for discharging a fire extinguishing foam, the inspection method including a polymer absorbent for the fire extinguishing foam released from the foam discharge means. A defoaming step of defoaming with an antifoaming agent, wherein the defoaming step places the antifoaming agent in a region where the foam for fire extinguishing is released before the foam for fire extinguishing is released from the foam releasing means. Including an arranging step, and the defoaming step further includes an absorption step in which the antifoaming agent arranged in the arranging step absorbs the foam aqueous solution from the fire-fighting foam released from the foam releasing means. This is an inspection method for the foam fire extinguishing equipment. As the polymer absorbent contained in the antifoaming agent, various ones (for example, resin-based ones) can be used as long as they are made of a water-absorbing polymer having high water absorption.

Moreover, this invention is the said inspection method, Comprising: In the state in which the antifoamer arrange | positioned at the said arrangement | positioning process is contained in the antifoam sheet formed so that arrangement | positioning is possible in the area | region where the foam for fire extinguishing is discharge | released. It is an inspection method characterized by being arranged. The antifoam sheet may be formed by processing the antifoam agent into a sheet shape, and the antifoam sheet has at least one surface (at least one of upper and lower surfaces, for example, at least The antifoaming agent can be applied or affixed to the upper surface), and the antifoaming sheet is formed into a bag shape with a water-permeable material and encapsulated with the antifoaming agent. Can be.

The present invention also provides an inspection tool used for inspection of a foam fire extinguishing equipment provided with a foam discharge means for discharging a fire extinguishing foam, the inspection tool comprising a defoaming sheet containing a defoaming agent, and The foam sheet is formed so as to be disposed in a fire-extinguishing foam discharge region of the foam discharge means, and the foam-extinguishing agent includes a polymer absorbent. is there. The antifoam sheet may be formed by processing the antifoam agent into a sheet shape, and the antifoam sheet has at least one surface (at least one of upper and lower surfaces, for example, at least The antifoaming agent can be applied or affixed to the upper surface), and the antifoaming sheet is formed into a bag shape with a water-permeable material and encapsulated with the antifoaming agent. Can be.

The present invention also relates to a method for inspecting a foam fire extinguishing equipment provided with a foam discharge means for discharging a fire extinguishing foam, wherein the inspection method uses a fire extinguishing foam released from the foam discharge means as a polymer absorbent. A defoaming step of defoaming with an antifoaming agent, wherein the defoaming step includes placing the antifoaming agent in a region where the foam for fire extinguishing is released before the foam for fire extinguishing is released from the foam releasing means. Including a spraying step of spraying, and further, the antifoaming step includes an absorption step of absorbing the foam aqueous solution from the foam for fire extinguishing, wherein the antifoaming agent sprayed in the spraying step is released from the foam releasing means. It is an inspection method for the characteristic fire extinguishing equipment. In addition, the thing of the shape which can be spread | dispersed, such as powder form, a granular form, and a gel form, can be used for the said defoamer spread | spread by the said dispersion | distribution process.

  In this invention, the defoaming mechanism by the antifoaming agent containing the polymer absorbent is different from that by the conventional antifoaming agent, and the polymer absorbent forms it from the foam film of the fire extinguishing foam. Absorbs and removes the aqueous foam solution, which destabilizes the foam film and easily removes the foam. Regardless of the defoaming effect is obtained, that is, the defoaming mechanism by the defoaming agent of the present invention is a high expansion even if the extinguishing foam is low expansion. Even if it exists, the same defoaming effect is acquired.

  Therefore, according to the present invention, in the method for inspecting foam fire extinguishing equipment, it includes a defoaming step of defoaming the foam for fire extinguishing with a defoaming agent, and the defoaming agent includes a polymer absorbent. A high defoaming effect can be obtained regardless of whether the foam for extinguishing is low-expansion or high-expansion, and the anti-foaming sheet containing the antifoaming agent is provided in the inspection tool of the foam extinguishing equipment. Since the antifoaming agent contains a polymer absorbent, a high defoaming effect can be obtained regardless of whether the fire-extinguishing foam to be defoamed has high expansion or low expansion.

  Moreover, in this invention, since the foam aqueous solution of the foam for fire extinguishing absorbed by the polymer absorbent in the process of defoaming by the antifoaming agent is retained in a gelled state in the polymer absorbent. The fire-fighting foam residue after the anti-foaming treatment with the anti-foaming agent is not only defoamed by the defoaming mechanism, but also has a reduced liquid content and is easily recovered. For example, the residue is in a state where it can be easily recovered because it does not re-foam even when sucked with a suction device such as a vacuum cleaner, and the antifoaming agent is included in the defoaming sheet. When it exists, it is in the state which can collect | recover easily the whole defoaming sheet collectively.

  Therefore, according to the present invention, in the method for inspecting foam fire extinguishing equipment, it includes a defoaming step of defoaming the foam for fire extinguishing with a defoaming agent, and the defoaming agent includes a polymer absorbent. In addition, it is possible to easily recover the residue of the foam for fire extinguishing after the defoaming treatment. In addition, the inspection tool for the foam fire extinguishing equipment includes a defoaming sheet containing a defoaming agent, and the defoaming agent is a polymer. By including the absorbent, it is possible to easily recover the residue after the defoaming treatment of the fire-extinguishing foam.

It is the flowchart which showed the flow of the process of the inspection method of the foam fire extinguishing equipment of this invention, (a) shows the thing by the 1st aspect, (b) has shown the thing by the 2nd aspect. . It is explanatory drawing which showed a mode that an antifoamer absorbed the foam aqueous solution of the foam for fire extinguishing, and extinguishes the foam for fire extinguishing by the inspection method same as the above. In the inspection method same as the above, according to the first embodiment, the defoaming agent absorbs the foam aqueous solution of the fire-extinguishing foam, and is an explanatory diagram showing the state of extinguishing the fire-extinguishing foam. In the inspection method same as the above, according to the second embodiment, the antifoaming agent absorbs the foam aqueous solution of the fire-extinguishing foam, and shows how the fire-extinguishing foam is removed. It is the equipment system diagram which showed an example of the foam fire-extinguishing equipment inspected with the inspection method of the foam fire-extinguishing equipment of this invention, and an inspection tool, Comprising: The state in which the inspection tool is arrange | positioned is also shown.

  DESCRIPTION OF EMBODIMENTS Embodiments of an inspection method and inspection tool for a foam fire-extinguishing facility according to the present invention will be described with reference to the drawings.

  First, an antifoaming agent including a polymer absorbent used in an inspection method and an inspection tool for foam fire extinguishing equipment according to the present invention will be described.

  In this invention, as the polymer absorbent contained in the antifoaming agent, various ones can be used as long as they are made of a water-absorbing polymer having high water absorption (for example, resin-based ones). The shape can be used in various shapes that can be sprayed on the fire extinguishing foam such as powder or granular, or in the discharge area, and various shapes that can be arranged in the discharge area of the fire extinguishing foam such as sheet. What was processed into the shape of can also be used. In addition, all the antifoaming agents can be polymer absorbents, or other substances can be mixed with the polymer absorbent.

  Moreover, in this invention, an antifoamer shall be contained in the antifoam sheet formed so that arrangement | positioning was possible in the discharge | release area | region of the foam for fire extinguishing. This defoaming sheet can be formed into a sheet by processing the defoaming agent itself as described above, and is formed from various materials, and at least one surface thereof (at least one of the upper and lower surfaces). The antifoaming agent can be applied or affixed to at least the upper surface, for example, and a sheet is formed in a bag shape with a water-permeable material, and the antifoaming agent is encapsulated therein. You can also.

  And the inspection tool of the foam fire extinguishing equipment of this invention can be comprised by comprising the antifoam sheet | seat containing an antifoamer as mentioned above.

  Next, the foam extinguishing mechanism of the foam for fire extinguishing by the antifoaming agent containing the polymer absorbent used in the inspection method and the inspection tool of the foam extinguishing equipment of the present invention will be described.

  FIG. 2 schematically shows the basic mechanism of defoaming a fire-extinguishing foam by a defoaming agent containing a polymer absorbent. As shown in the figure, when a foam for fire extinguishing is maintained in a stable state, the hydrophobic groups and hydrophilic groups in the surfactant component forming the fire extinguishing foam are regular molecules. Although the foam film is kept stable at a certain thickness ("stable state") by the structure, if a polymer absorbent as an antifoaming agent adheres to the foam film, the polymer Due to the water absorbing action of the absorbent, the polymer absorbent absorbs the foam aqueous solution that forms it from the foam film, reducing its amount and reducing the thickness of the foam film ("absorption state"), The polymer absorbent absorbs the foam aqueous solution from the foam film, the thickness of the foam film becomes so thin that it can no longer maintain its stability, and it becomes easy to break ("unstable state"). Bubbles will result in defoaming.

  That is, the antifoaming agent containing the polymer absorbent used in the method and inspection tool for the foam fire extinguishing equipment of the present invention, even if the molecular structure of the hydrophobic group and hydrophilic group of the fire extinguishing foam to be defoamed is dense, Moreover, even if it is not dense, that is, even if the fire extinguishing foam to be extinguished is low expansion or high expansion, it can be used for fire extinguishing by the defoaming mechanism that can obtain the same defoaming effect. The foam can be removed.

  The inspection method and inspection tool for the foam extinguishing equipment of the present invention is to extinguish the foam for fire extinguishing using the defoaming mechanism by the antifoaming agent containing the above-described polymer absorbent, Foam extinguishing agent is sprayed on the foam for fire extinguishing discharged from the foam releasing means to extinguish the foam for fire extinguishing (which will be described later as the first embodiment), and the foam is extinguished in the area where the foam for fire extinguishing is released in advance. There is an antifoaming sheet that disperses the agent or contains an antifoaming agent, and firefighting foam is released from the foaming means on the antifoaming sheet (which will be described later as a second embodiment).

  FIG. 3 schematically shows a state in which an aqueous foam solution is absorbed by the antifoaming agent in a mode in which the antifoaming agent is sprayed on the fire-extinguishing foam released from the foam releasing means to defoam the fire-extinguishing foam. It is shown. In this embodiment, as shown in the figure, the defoamer enters between the fire-extinguishing foams, and the foam aqueous solution flows from the top, bottom, left and right fire-extinguishing foams to which the antifoaming agent adheres and absorbs the defoaming. Presumed to be. Therefore, in the case of this embodiment, after the antifoaming agent is dispersed, the antifoaming agent can be dispersed in the fire fighting foam by stirring the antifoaming foam in the fire fighting foam, and the fire fighting foam can be more efficiently Is understood to be able to defoam.

  FIG. 4 shows a mode in which an antifoaming agent is sprayed on an area where a foam for fire extinguishing is discharged or an antifoaming sheet including the foaming foam is disposed in advance, and then the foam for fire extinguishing is discharged from the foam releasing means. The mode that the foam aqueous solution in is absorbed by an antifoamer is shown typically. In this embodiment, the antifoaming agent or the antifoaming sheet containing the antifoaming agent is located under the fire extinguishing foam, but as shown in the figure, the upper fire extinguishing foam is inserted through the lower fire extinguishing foam. It is presumed that the foam aqueous solution is absorbed from the foam, and the fire extinguishing foam is sequentially extinguished from the upper side to the lower side. This is because the upper extinguishing foam and the lower extinguishing foam are in contact with each other, and the flow of the aqueous foam solution from the upper extinguishing foam to the lower extinguishing foam is formed by the weight of the aqueous foam solution. Since only the lower fire extinguishing foam comes into contact with the antifoaming agent or the foaming sheet containing the same, and the foam aqueous solution is absorbed from the lower fire extinguishing foam, the concentration is above and below the fire fighting foam. It is speculated that a gradient will be formed, which is also due to the formation of a foam aqueous flow from the upper extinguishing foam to the lower extinguishing foam. Therefore, in this embodiment, the lower extinguishing foam is kept in a stable state by the upper extinguishing foam aqueous solution flowing in, while the upper extinguishing foam is in an unstable state by the outflowing foam aqueous solution. Since it becomes easy to defoam, it is understood that the fire-fighting foam can be efficiently removed without stirring the defoamer in the fire-fighting foam.

  Next, an example of the inspection method for the foam fire-extinguishing equipment according to the present invention will be described separately for the first aspect and the second aspect. In addition, description of a 2nd aspect also includes description of the example of the inspection method by the inspection tool of the foam fire-extinguishing equipment of this invention.

  Fig.1 (a) shows the flow of the process of the inspection method of a 1st aspect. The inspection method according to the first aspect includes a step of spraying an antifoaming agent containing a polymer absorbent to a fire extinguishing foam released from the foam releasing means.

  Specifically, in the inspection method of the first aspect, the process is “started”, and first, in the “foam extinguishing equipment start-up” process (S1-1), the fire-extinguishing foam is released from the foam discharge means into the discharge area. In the process of “stop foam extinguishing equipment” (S1-2), the release of the foam for fire extinguishing is stopped, and in the process of “checking the state of foam for fire extinguishing” (S1-3), it is released into the release area The fire extinguishing foam is collected and the state of the fire extinguishing foam is confirmed, and a predetermined inspection is performed. Next, in the step (S1-4) of “foaming agent spraying”, the antifoaming agent is sprayed on the foam for fire extinguishing, and the foam for fire fighting is stirred in the step (S1-5) of “foaming for fire extinguishing”. Disperse antifoam in fire-fighting foam. In the “foam aqueous solution absorption” step (S1-6), after an appropriate period of time, the foam solution for extinguishing foam is absorbed by the antifoaming agent and the foam for fire extinguishing is defoamed, In the “bubble recovery” step (S1-7), the residue of the fire-extinguishing foam after the defoaming treatment is recovered by an appropriate method (for example, suctioned by a vacuum cleaner or the like), and the process is “finished”. It has become a thing.

  FIG.1 (b) shows the flow of the process of the inspection method of a 2nd aspect. In the inspection method according to the second aspect, before the foam for fire extinguishing is discharged from the foam discharge means, the antifoaming agent is sprayed on the discharge region, or the antifoam sheet containing the antifoaming agent, that is, the inspection tool is arranged. The process to perform is included.

  Specifically, the process is “started”, and first, in the step (S2-1) of “disposal of antifoaming agent or arrangement of antifoaming sheet”, the antifoaming agent is sprayed on the area where the foam for fire extinguishing is released in advance. Or put a defoaming sheet containing the defoaming agent, and then in the step (S2-2) of “foaming fire extinguishing equipment activation”, remove the foam for fire extinguishing from the foam releasing means. Release onto antifoam sheet containing foam. After that, in the “foam extinguishing equipment stop” step (S2-3), the release of the fire extinguishing foam was stopped, and in the “fire extinguishing foam state confirmation” step (S2-4), it was released into the discharge area. Check the condition of the fire-extinguishing foam by collecting fire-extinguishing foam, etc., and conduct a predetermined inspection. Next, in the “foam aqueous solution absorption” step (S2-5), an appropriate time is set, the foam solution of the fire-extinguishing foam is absorbed by the anti-foaming agent, and the foam for fire-extinguishing is extinguished. In the step of “recovery” (S2-6), the residue of the fire-extinguishing foam after the defoaming treatment is recovered by an appropriate method (for example, sucking with a vacuum cleaner or collecting the entire antifoam sheet). The process is “finished”.

  In both cases of the first aspect and the second aspect, the foam for fire extinguishing is defoamed using the defoaming mechanism by the antifoaming agent containing the polymer absorbent. Therefore, unlike conventional antifoaming agents, the same antifoaming effect can be achieved regardless of whether the molecular structure of the hydrophobic group and hydrophilic group of the extinguishing foam to be defoamed is dense or non-dense. The same defoaming effect can be obtained regardless of whether the foam for fire extinguishing is low expansion or high expansion.

  Further, in both cases of the first aspect and the second aspect, the foam aqueous solution of fire-extinguishing foam absorbed by the polymer absorbent in the process of defoaming by the antifoaming agent is gelled in the polymer absorbent. It will be held in a converted state. For this reason, the fire-fighting foam residue after the defoaming treatment with the defoaming agent is not only defoamed by the defoaming mechanism, but also has a reduced liquid content and can be easily recovered. For example, in the case of the first mode and the mode of spraying the antifoaming agent in the second mode and removing the defoaming process, the residue is cleaned. Even if sucked by a suction device such as a machine, it can be easily recovered without refoaming. In the case of the aspect which arrange | positions the antifoam sheet | seat in a 2nd aspect and defoams, the residue can be collect | recovered easily with the antifoam sheet collectively.

  In the first embodiment, the fire extinguishing foam may be stirred to disperse the antifoaming agent in the fire extinguishing foam (S1-5). However, by including the said process, a 1st aspect can disperse a defoamer uniformly in the foam for fire extinguishing, and can defoam the foam for fire extinguishing more efficiently It has become.

  Furthermore, in the case of the mode in which the antifoam sheet is disposed and the defoaming process is performed in the second mode, if the foam for fire extinguishing is covered with a fire extinguishing foam such as a machine tool or a car, an adverse effect such as failure or corrosion is caused. Even if there are machines that may cause damage, cover the machines with antifoam sheets so that they are not covered with antifoam or fire-extinguishing foam, that is, with anti-foaming or fire-extinguishing foam. Inspection can be performed while preventing adverse effects.

  Next, an example in the case of applying the inspection method and the inspection tool of the foam fire-extinguishing equipment of the present invention to the foam fire-extinguishing equipment that discharges the low-expansion fire-extinguishing foam will be described. In addition, the inspection method and inspection tool of the foam fire-extinguishing equipment according to the present invention can be applied to a foam fire-extinguishing equipment that emits a highly expanded fire-extinguishing foam. In that case, a foaming machine is an example of a foam discharge | release means.

  In FIG. 5, the foam fire extinguishing equipment 1 includes a foam stock solution tank 2, a water tank 3, a pump P, a mixer 4 and the like on the primary side, and a fire extinguishing foam head 5, a sensing head 6 and the like on the secondary side. In the event of a fire, the foam stock solution in the foam stock solution tank 2 and the water in the water storage tank 3 are mixed by the mixer 4 to form a foam aqueous solution, which is pumped to the secondary side by the pump P, from the foam head 5 for fire extinguishing. It can be released as a fire extinguishing foam. 7 is a simultaneous opening valve, 8 is a flowing water detection device that detects when the simultaneous opening valve 7 is opened and there is flowing water, and 9 is a manual provided at the end of the flow path on the sensing head 6 side. It is a starting valve.

  In the case of checking the foam for fire extinguishing with the foam fire extinguishing equipment 1 by the inspection method of the first aspect, the manual start valve 9 is opened to create the same state as the sensing head 6 is operated. The simultaneous opening valve 7 is opened and the fire-extinguishing foam is released from the fire-extinguishing foam head 5, that is, the “foaming equipment start-up” step (S 1-1) is executed, the manual start-up valve 9 is closed, and the fire is extinguished. The release of foam for use is stopped, that is, the step (S1-2) of "stop foam extinguishing equipment" is executed. Then, the state of the fire-extinguishing foam is confirmed and a predetermined inspection is performed, that is, the process of “checking the state of the fire-extinguishing foam” (S1-3) is performed, and the anti-foaming agent is applied to the fire-extinguishing foam. That is, the “foaming agent spraying” step (S1-4) is performed, the fire-extinguishing foam is stirred to disperse the defoaming agent in the fire-extinguishing foam, ie, the “fire-extinguishing foam stirring” step (S1- 5) is executed. Then, after an appropriate period of time, the foam absorbent polymer is absorbed from the fire-extinguishing foam by the polymer absorbent of the anti-foaming agent, and the foam is removed from the fire-extinguishing foam, that is, the “foam aqueous solution absorption” step (S1- 6) is performed, and the residue after the defoaming treatment is collected by an appropriate method, that is, by carrying out the step (S1-7) of “treated foam collection”.

  In addition, when the foam extinguishing equipment 1 is used to inspect the fire extinguishing foam by the inspection method of the second aspect, an antifoaming agent is sprayed on the discharge area of the fire extinguishing foam head 5 or the foam extinguishing sheet S is disposed in advance. In other words, the step (S2-1) of “foaming agent dispersal or antifoaming sheet arrangement” is executed, the manual start valve 9 is opened, and the antifoaming agent or antifoaming sheet is removed from the foam head 5 for fire extinguishing. The fire-extinguishing foam is discharged on top, that is, the "foaming equipment start-up" step (S2-2) is executed, the manual start valve 9 is closed, and the fire-extinguishing foam is stopped, that is, "foaming fire extinguishing" The step (S2-3) of “equipment stop” is executed. Then, the state of the discharged fire-fighting foam is confirmed, and a predetermined check is performed, that is, the step of “checking the state of the fire-fighting foam” (S2-4) is performed, and an anti-foaming agent is taken after an appropriate time. The polymer foam absorbent absorbs the foam aqueous solution from the fire-extinguishing foam and performs the foam extinguishing treatment of the fire-extinguishing foam, that is, executes the “foam aqueous solution absorption” step (S2-5), and remains after the foam extinguishing treatment. A thing is collect | recovered by an appropriate method, ie, it performs by performing the process (S2-6) of "processed foam collection".

  The foam fire extinguishing equipment 1 has a test valve 10 connected to the tip of a fire extinguishing foam discharge means (not shown) equivalent to the fire extinguishing foam head 5 on the secondary side of the simultaneous opening valve 7. A fire extinguisher connected to the test valve 10 is provided on the primary side, and further includes a switching valve 11 between the test valve 10 and the fire extinguishing foam head 5 that can open and close the flow of the foam aqueous solution to the fire extinguishing foam head 5. The discharge inspection according to the first aspect or the second aspect may be performed on the fire-extinguishing foam released from the foam releasing means.

  For example, in the foam fire-extinguishing equipment 1, the switching valve 11 is closed before the equipment is started by the manual start valve 9 to shut off the flow of the foam aqueous solution toward the fire-extinguishing foam head 5. After the opening operation, the test valve 10 is opened to release the fire-extinguishing foam from the secondary fire-extinguishing foam releasing means, and the fire-fighting foam is inspected by the inspection method of the first aspect. You can also In addition, the switching valve 11 is closed to shut off the flow of the foam aqueous solution toward the fire-extinguishing foam head 5 before starting the equipment by the manual start-up valve 9, and the fire-extinguishing foam on the secondary side of the test valve 10 is shut off. An antifoaming agent is sprayed on the discharge area of the fire extinguishing foam of the discharge means or an antifoam sheet S as an inspection tool is disposed as shown in FIG. The fire extinguishing foam is discharged from the secondary fire extinguishing foam discharge means, and the fire extinguishing foam can be inspected by the inspection method of the second aspect.

  The antifoam sheet S as an inspection tool is obtained by applying a polymer absorbent as an antifoaming agent to at least one surface of the sheet. Since the defoaming sheet S is formed in a sheet shape, it can be easily carried around because it can be rolled up or folded small. Moreover, even if there is a machine tool or the like in the discharge area of the fire-extinguishing foam, the sheet can be arranged from above.

DESCRIPTION OF SYMBOLS 1 Foam extinguishing equipment 2 Foam stock solution tank 3 Water storage tank 4 Mixer 5 Fire extinguishing foam head 6 Sensing head 7 Simultaneous release valve 8 Flow detection device 9 Manual starting valve 10 Test valve 11 Switching valve P Pump S Foam sheet

Claims (4)

A method for inspecting a foam fire-fighting equipment equipped with a foam discharge means for discharging a fire-extinguishing foam,
The inspection method includes a defoaming step of defoaming the fire extinguishing foam released from the foam releasing means with an antifoaming agent including a polymer absorbent ,
The defoaming step includes an arrangement step of disposing the antifoaming agent in a region where the foam for fire extinguishing is released before the foam for fire extinguishing is released from the foam releasing means, and the defoaming step further includes: A method for inspecting foam extinguishing equipment, comprising: an absorption step in which the antifoaming agent arranged in the arranging step absorbs an aqueous foam solution from the fire extinguishing foam released from the foam releasing means . The defoamer is arranged in the arrangement step, according to claim 1, characterized in that it is arranged in a state in which extinguishing foam is included in the defoaming sheets placeable formed in a region that is released Inspection method. An inspection tool used for checking a foam fire-fighting equipment having a foam discharge means for discharging a fire-extinguishing foam,
The inspection tool includes an antifoaming sheet containing an antifoaming agent,
The antifoam sheet is formed so as to be disposed in a fire extinguishing foam discharge area of the foam discharge means,
The said antifoaming agent contains the polymeric absorber, The inspection tool of the foam fire extinguishing equipment characterized by the above-mentioned. A method for inspecting a foam fire-fighting equipment equipped with a foam discharge means for discharging a fire-extinguishing foam,
The inspection method includes a defoaming step of defoaming the fire extinguishing foam released from the foam releasing means with an antifoaming agent including a polymer absorbent,
The defoaming step includes a spraying step of spraying the antifoaming agent on a region where the foam for fire extinguishing is released before the foam for fire extinguishing is released from the foam releasing means, and the defoaming step further includes: A method for inspecting foam fire extinguishing equipment, comprising: an absorption process in which the antifoaming agent sprayed in the spraying process absorbs a foam aqueous solution from the foam for fire extinguishing discharged from the foam discharge means.

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