KR20200076931A - Method for warning leakage of hazardous chemicals - Google Patents

Abstract

The present invention relates to a method for warning of hazardous chemical leakage. The method is for quick notification for residents who may be affected by chemical leakage and their quick evacuation. According to a third aspect of the present invention, the method is to detect and warn for hazardous chemicals leaking out of storage tanks disposed in a discharge wall and disposed in a region limited by a flow path. The method includes: a first step in which a leakage detection means installed in the discharge wall detects chemical leakage in a case where a chemical substance leaks out of at least one of the storage tanks; a second step in which the change values of level gauges individually installed in the storage tanks are measured, the change values of flow gauges individually installed in pipes connecting the storage tanks and process facilities are measured, and then the level gauge and flow gauge change values are compared for recognition of the leakage amount and source; a third step in which the type of the leaking substance and the leakage amount recognized in the second step are transmitted to a control unit by wireless communication; and a fourth step in which the control unit sends a disaster warning text message to local residents who may be affected in accordance with the Chemical Substance Control Act using a database in which the range of impact of the chemical substance in the storage tank is calculated.

Description

How to alert for hazardous chemical leaks {METHOD FOR WARNING LEAKAGE OF HAZARDOUS CHEMICALS}

The present invention relates to a hazardous chemical leak warning method, and relates to a hazardous chemical leak warning method to promptly inform and evacuate residents within the scope of the spilled chemical substance.

Storage tanks containing various hazardous chemicals are installed and managed in the discharge wall.

A flow path surrounding the storage tank is disposed in the discharge wall, and harmful chemicals leaking from the storage tank are discharged to the outside through the flow path.

A wastewater treatment path leading to the wastewater treatment plant is connected to the flow path, but it is also connected to a drainage pipe, which can pollute the environment and damage the human body when leaking harmful chemicals are discharged through the drainage pipe.

Accordingly, a number of devices or systems have been conventionally proposed to detect the leakage of chemicals from a plurality of storage tanks in a discharge wall.

However, in the conventional hazardous chemical leak detection device, a leak of a chemical substance is detected using a leak detector or a gas detector. Thus, through the leak detector or gas detector, it is only possible to confirm that the chemical leaks in the discharge wall. It is possible, and there is a problem in which it is impossible to check how much and which chemicals have leaked from which storage tank.

In addition, in the case of a leak detector, since it reacts to rainwater outdoors, it is inefficient for detecting leaks of chemicals, and there is a problem in that the cost burden increases because a leak detector or a gas detector must be separately installed for each chemical property.

On the other hand, chemicals contain many kinds of hazardous chemicals, many are handled under extreme conditions such as high temperature and high pressure, and there are many potential risk factors such as fire, explosion, chemical reaction, and toxicity, making it difficult to cope with them. No, once a leak occurs, it often causes a huge disaster, and in fact, large and small leaks are occurring in domestic and foreign chemical plants.

To this end, several government departments, such as the Ministry of Environment, Ministry of Environment, and the Ministry of Labor provide manuals for responding to chemical accidents in Korea. In the case of the Ministry of Environment, the'Handbook of Hazardous Substances Response', which translated the Canadian Response Response Guidebook (ERG) of CANUTEC in Canada The company provides and provides'Key Info Guide' for accident accidents based on domestic and foreign chemical substances databases.

In addition, we developed a chemical accident response information system (CARIS) and a chemical substance information system (NCIS) to deal with hazardous chemical substances, information on disaster prevention of leaked substances, mission system for each response agency, and risks of hazardous chemicals to the human body. It presents risk information.

In addition, a number of domestic and foreign patents for disaster prevention in the case of leakage of hazardous chemicals have been disclosed as a prior art.

However, in the absence of an information system that provides prompt and specific measures to minimize the damage of hazardous chemical leakage to the parties (disaster prevention officials and general users, etc.) at the leak site, there is an urgent situation in the field of chemical accidents. It is difficult to increase the efficiency of initial response.

In other words, in order to minimize the damage of hazardous chemical leakage accidents, it is very important to take an initial response when a hazardous chemical leaks. Since it is difficult to learn immediately, it is difficult to increase the efficiency of initial response in an urgent situation at the site of a chemical accident.

Moreover, when a hazardous chemical leaks, firefighters and environmental officials arrange and contact experts who understand the characteristics of the hazardous chemical, and the expert investigates and selects the optimal disaster prevention method, consults with the disaster prevention method, and utilizes it. There is a problem that leaks are responding, and this series of processes often takes a minimum of hours and a few days, so that the initial golden time, which can minimize the damage of hazardous chemical leaks, is often missed.

KR 10-2018-0123853 A (Nov. 20, 2018) KR 10-1692926 B1 (2017.01.04.announcement)

The present invention has been devised to solve various conventional problems as described above, and a method for detecting a hazardous chemical leak that can detect a certain amount of a chemical leaked in a certain storage tank among a plurality of storage tanks The purpose is to provide.

The present invention has been devised to solve various conventional problems as described above, and an object thereof is to provide a method for responding to a hazardous chemical leak that can quickly identify a leaked chemical and perform an initial response.

The present invention has been devised to solve a number of conventional problems as described above, the object of the present invention is to provide a method for alerting a hazardous chemical leak to promptly evacuate and evacuate residents within the scope of the spilled chemical. have.

The present invention has been devised to solve various problems as described above, and treats harmful chemicals that can prevent the environment from being polluted by neutralizing the chemicals leaked from the storage tank before entering the wastewater treatment plant. The purpose is to provide a system.

In order to achieve the above objects, the method for detecting a hazardous chemical leak according to the first aspect of the present invention is disposed in a discharge wall, but a hazardous chemical leaked from a plurality of storage tanks disposed in a region defined by a flow path. A method for detecting, when a chemical leaks in at least one of the plurality of storage tanks, a first step of detecting a leak of the chemical in a leak detection means installed in the discharge wall; And measuring a change value of a level gauge installed in each of the plurality of storage tanks, measuring a change value of a flow gauge installed in each pipe connecting the plurality of storage tanks and each process facility, and then changing the level gauge. And comparing the value with the change value of the flow gauge to recognize how many chemicals have leaked from which storage tank among the plurality of storage tanks.

In this case, the leak detection means is preferably a leak detector or a gas detector.

In addition, the change value of the level gauge and the change value of the flow gauge are transmitted to the control unit by wireless communication, and the type and amount of leakage chemicals recognized in the second step are transmitted to the control unit by wireless communication.

The method for responding to the leakage of hazardous chemicals according to the second aspect of the present invention is a method for detecting and responding to hazardous chemicals leaking from a plurality of storage tanks disposed in an area defined by a flow path but arranged in a discharge wall, wherein A first step of detecting a leak of the chemical in a leak detection means installed in the discharge wall when the chemical leaks in at least one of the plurality of storage tanks; Measure the change value of the level gauge installed in each of the plurality of storage tanks, measure the change value of the flow gauge installed in each pipe connecting the plurality of storage tanks and each process equipment, and then change the change value of the level gauge A second step of comparing the change values of the flow rate gauge and how many chemicals have leaked from which of the plurality of storage tanks; A third step in which the type and amount of leaked chemicals recognized in the second step are transmitted to the control unit by wireless communication; And a fourth step of automatically transmitting the type and amount of the leaked chemicals to the correspondents in the workplace by text, and automatically transmitting the pre-database disaster prevention equipment and disaster prevention products and their locations automatically. Should be

In addition, the controller may further include a fifth step of transmitting information on the leaked chemical substance to a management agency managing the leaking substance by wireless communication.

At this time, it is preferable that the change value of the level gauge and the change value of the flow gauge are transmitted to the control unit by wireless communication.

Hazardous chemical leak warning method according to a third aspect of the present invention is a method for detecting and alerting a hazardous chemical substance leaking from a plurality of storage tanks disposed in an area defined by a flow path but arranged in a discharge wall, wherein A first step of detecting a leak of the chemical in a leak detection means installed in the discharge wall when the chemical leaks in at least one of the plurality of storage tanks; Measure the change value of the level gauge installed in each of the plurality of storage tanks, measure the change value of the flow gauge installed in each pipe connecting the plurality of storage tanks and each process equipment, and then change the change value of the level gauge A second step of comparing the change values of the flow rate gauge and how many chemicals have leaked from which of the plurality of storage tanks; A third step in which the type and amount of leaked chemicals recognized in the second step are transmitted to the control unit by wireless communication; And the controller is a fourth step of sending a disaster message to local residents within the scope of influence by utilizing a database that calculates the scope of influence of chemical substances stored in the storage tank according to the Chemical Management Act.

At this time, it is preferable that the text sent in the fourth step includes an evacuation site.

In addition, the evacuation site is calculated by inputting only the current wind speed in the database for calculating the impact range of the chemical.

A hazardous chemical treatment system according to a fourth aspect of the present invention is a system for treating hazardous chemicals leaking from a plurality of storage tanks disposed in an area defined by a flow path but disposed in a discharge wall, the flow path and wastewater A first opening/closing valve is installed in a chemical treatment furnace connecting a treatment plant, and a second opening/closing valve is installed in a rainwater furnace that is branched from the chemical treatment furnace and discharges rainwater. A pH adjusting part is connected between the one opening and closing valves to neutralize the pH of chemicals leaked from at least one of the plurality of storage tanks and move to the wastewater treatment plant, and the first opening and closing valve, the second opening and closing valve and the pH The control unit is configured to enable wireless communication with the control unit, and when a chemical leaks from at least one of the plurality of storage tanks, the leak detection means installed in the discharge wall primarily detects the leakage of the chemical. , Measure the change value of the level gauge respectively installed in the plurality of storage tanks, measure the change value of the flow gauge installed in each pipe connecting the plurality of storage tanks and each process equipment, and then change the level gauge It is characterized by comparing the value and the change value of the flow gauge to recognize how much of the chemical leaked out of which of the plurality of storage tanks as a secondary.

In addition, if nothing is detected by the leak detection means and there is no change in the level gauge and the flow gauge, both the first opening and closing valve and the second opening and closing valve are closed, and the leak detection means detects rainwater and detects the level gauge and the flow gauge. If there is no change, the first opening and closing valve is closed and the second opening and closing valve is opened, and when the leakage detection means detects a chemical and a flow rate loss occurs due to a difference between the level gauge and the flow gauge, the first opening and closing valve is opened. The second opening and closing valve is characterized in that it is controlled by the control unit to close.

In addition, it is preferable that the pH control unit is composed of an acidic material injector and a basic material injector, and is connected to a chemical treatment furnace, respectively.

At this time, the control unit is characterized in that it neutralizes to a pH of 7 to 8 by controlling an acidic material injector or a basic material injector according to the pH of the leaked chemical.

According to the solving means of the above-described problem, the present invention has the following effects.

The present invention primarily detects that a chemical leaks in the discharge wall by a leak detection means, compares the change value of the level gauge and the change value of the flow gauge, and compares the change value of the flow gauge to determine which chemical in a storage tank among a plurality of storage tanks. It is effective in detecting the amount of leakage.

Accordingly, it is possible to reduce the installation cost because it is not necessary to install a plurality of leak detection means according to the characteristics of chemical substances stored in a plurality of storage tanks as in the prior art.

According to the present invention, the type and amount of leaked chemicals are automatically transmitted to the corresponding personnel in the workplace by text, and the pre-database disaster prevention equipment, the disaster prevention article, and its location are automatically transmitted through the text, so that an early response can be made in the event of a leak. have.

The present invention utilizes a database that calculates the range of influence of chemical substances stored in storage tanks according to the Chemical Management Act to send evacuation texts to local residents within the scope of the spilled chemicals, thereby enabling rapid evacuation. There is.

The present invention has an effect of preventing the environment from being polluted by neutralizing the chemicals leaked from the storage tank before entering the wastewater treatment plant.

1 is a view schematically showing a leak detection system employed in a method for detecting a hazardous chemical leak according to a first aspect of the present invention.
2 is a flow chart showing a method for detecting a hazardous chemical leak according to the first aspect of the present invention.
3 is a flow chart showing a method for responding to hazardous chemical leakage according to the second aspect of the present invention.
Figure 4 is a flow chart showing a hazardous chemical leak warning method according to the third aspect of the present invention.
5 is a view schematically showing a hazardous chemical treatment system according to a fourth aspect of the present invention.
6 is a table showing the operating states of the first opening and closing valve and the second opening and closing valve employed in the hazardous chemical treatment system according to the fourth aspect of the present invention.

Hereinafter, a preferred embodiment of the method for alerting to leakage of hazardous chemicals according to the present invention will be described in detail with reference to the accompanying drawings. For reference, the terms and words used in the specification and claims should not be interpreted as being limited to ordinary or lexical meanings, and the inventor appropriately explains the concept of terms to explain his or her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention. In addition, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention, and does not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

Hazardous chemicals (materials against accidents) are chemicals that have high acute toxicity and explosiveness among chemicals and are highly likely to cause chemical accidents, or that chemical damage is likely to be large in the event of a chemical accident. Refers to chemical substances designated and announced by the Minister of Environment in accordance with Article 39 of the Chemical Substances Management Act (Article 2 of the Chemicals Management Act)

In Korea, various government departments such as the Ministry of Public Safety and Security, the Ministry of Environment, and the Ministry of Labor provide manuals for responding to chemical accidents, and the Ministry of Environment provides a'Handbook of Hazardous Substances', which translates CANUTEC's Emergency Response Guidebook (ERG) in Canada. In addition, we are manufacturing and providing'Key Info Guide to Accidents against Accidents' based on domestic and foreign chemical database.

In addition, we developed a chemical accident response information system (CARIS) and a chemical substance information system (NCIS) to deal with hazardous chemical substances, information on the disaster prevention of leaked substances, the mission system for each response agency, and the risk of hazardous chemicals to the human body. It presents risk information.

1 is a view schematically showing a leak detection system employed in a method for detecting a hazardous chemical leak according to a first aspect of the present invention.

The leak detection system employed in the method for detecting the leakage of hazardous chemicals according to the first aspect of the present invention includes a plurality of storage tanks (T1, T2) disposed in the discharge wall (2) but in an area defined by the flow path (4). ,T3,T4) to detect harmful chemicals leaking.

The discharge wall 2 is formed of a wall having a certain height so that chemicals leaking from the storage tanks T1, T2, T3, and T4 do not leak out.

Chemical substances stored in a plurality of storage tanks (T1, T2, T3, T4) are harmful substances that can pollute the environment and damage the human body when leaked.

Chemical substances stored in the plurality of storage tanks T1, T2, T3, and T4 may be the same material or different materials.

The flow path 4 is arranged in the discharge wall 2 to surround the storage tanks T1, T2, T3, and T4.

That is, the plurality of storage tanks T1, T2, T3, and T4 are surrounded by the flow path 4 or disposed in a limited area.

The flow path 4 may allow chemicals leaking from the plurality of storage tanks T1, T2, T3, and T4 to flow in a constant direction, and to rain water in a constant direction when it rains.

Each of the plurality of storage tanks (T1, T2, T3, T4) is provided with a level gauge (G1, G2, G3, G4), a plurality of storage tanks (T1, T2, T3, T4) and each processing facility (F1) Flowmeters D1, D2, D3, and D4 are installed in each of the pipes B1, B2, B3, and B4 connecting the ,F2, F3, and F4.

At this time, pumps P1, P2, P3, and P4 are respectively installed in the respective pipes B1, B2, B3, and B4.

In addition, a leak detection means (S) is installed in the portion located in the discharge wall (2) of the chemical treatment furnace (6) connecting the flow path (4) and the wastewater treatment plant (K), such leak detection means (S) It is preferably a leak detector or a gas detector.

In addition, the rainwater furnace 8 is branched to the chemical treatment furnace 6, and rainwater in the discharge wall 2 is discharged to the outside through the rainwater furnace 8.

2 is a flow chart showing a method for detecting a hazardous chemical leak according to the first aspect of the present invention.

The method for detecting a hazardous chemical leak according to the first aspect of the present invention includes a plurality of storage tanks T1 disposed in the discharge wall 2 but disposed in an area defined by the flow path 4 as shown in FIG. 1. As a method for detecting harmful chemicals leaking from T2, T3, T4), when a chemical leaks from at least one of the plurality of storage tanks (T1, T2, T3, T4), the discharge wall (2 First step (S10) for detecting the leakage of chemicals in the leak detection means (S) installed in); And the change values of the level gauges G1, G2, G3, and G4 respectively installed in the plurality of storage tanks T1, T2, T3, and T4 (S21), and the plurality of storage tanks T1, T2, T3, and T4. ) And measure the change value of flow gauges (D1, D2, D3, D4) installed in each pipe (B1, B2, B3, B4) connecting each process facility (F1, F2, F3, F4) (S22) Then, compare the change values of the level gauges (G1, G2, G3, G4) with the change values of the flow gauges (D1, D2, D3, D4), and select any of the plurality of storage tanks (T1, T2, T3, T4). It includes; a second step (S20) of recognizing how much chemical leaked from the storage tank (S23).

At this time, the change values of the level gauges G1, G2, G3, and G4 and the change values of the flow gauges D1, D2, D3, and D4 are transmitted to the control unit (not shown) by wireless communication, and in the second step. The type and amount of leaked chemicals recognized are transmitted to the control unit by wireless communication.

The control unit may be installed on the outer side of the discharge wall 2.

As such, the first detection of leaks of chemicals in the discharge wall 2 by the leak detection means S, the change values of the level gauges G1, G2, G3, G4 and the flow gauges D1, D2, D3 , D4) by comparing the change value of a plurality of storage tanks (T1, T2, T3, T4) by detecting which chemicals have leaked by what amount, which storage tank (T1, T2, T3, T4) According to the characteristics of the chemical substances stored in T1, T2, T3, and T4, it is not necessary to install a plurality of leak detection means S, thereby reducing installation cost.

3 is a flow chart showing a method for responding to hazardous chemical leakage according to the second aspect of the present invention.

The method for countering the leakage of hazardous chemicals according to the second aspect of the present invention includes a plurality of storage tanks T1 disposed in the discharge wall 2 but disposed in an area defined by the flow path 4 as shown in FIG. 1. As a method for detecting and responding to harmful chemicals leaking from T2, T3, T4), when a chemical leaks from at least one of the plurality of storage tanks (T1, T2, T3, T4), a discharge wall (2) a first step (S10) of detecting the leakage of chemicals in the leak detection means (S) installed in the; The change values of the level gauges G1, G2, G3, and G4 respectively installed in the plurality of storage tanks T1, T2, T3, T4 are measured (S21), and the plurality of storage tanks T1, T2, T3, T4 And flow rate gauges (D1, D2, D3, D4) installed in each pipe (B1, B2, B3, B4) connecting each process facility (F1, F2, F3, F4). Next, compare the change values of the level gauges G1, G2, G3, and G4 with the change values of the flow gauges D1, D2, D3, and D4, and store any of the plurality of storage tanks T1, T2, T3, T4. A second step (S20) of recognizing how many chemicals have leaked from the tank (S23); A third step (S30) in which the type and amount of the leaked chemicals recognized in the second step (S20) are transmitted to the control unit by wireless communication; And a fourth step (S40) in which the control unit automatically transmits the type and amount of the leaked chemicals to the corresponding person in the workplace by text, and automatically transmits the pre-database disaster prevention equipment and the disaster prevention article and its location automatically.

In addition, the control unit may further include a fifth step (S50) of transmitting information on the leaked chemical to the management organization managing the leaking of the chemical by wireless communication.

At this time, the change values of the level gauges G1, G2, G3, and G4 and the change values of the flow gauges D1, D2, D3, and D4 are transmitted to the control unit by wireless communication.

As described above, by automatically transmitting the type and amount of the leaked chemicals to the business site response personnel by text, and automatically transmitting the pre-database disaster prevention equipment and the disaster prevention products and their locations automatically, it is possible to promptly respond to a leak accident.

Figure 4 is a flow chart showing a hazardous chemical leak warning method according to the third aspect of the present invention.

According to the third aspect of the present invention, a method for alerting to leakage of hazardous chemicals includes a plurality of storage tanks T1 disposed in the discharge wall 2 but disposed in an area defined by the flow path 4 as shown in FIG. 1. A method for detecting and alerting hazardous chemicals leaking from T2, T3, T4), where a chemical leaks from at least one of the plurality of storage tanks (T1, T2, T3, T4). (2) a first step (S10) of detecting the leakage of chemicals in the leak detection means (S) installed in the; The change values of the level gauges G1, G2, G3, and G4 respectively installed in the plurality of storage tanks T1, T2, T3, T4 are measured (S21), and the plurality of storage tanks T1, T2, T3, T4 And flow rate gauges (D1, D2, D3, D4) installed in each pipe (B1, B2, B3, B4) connecting each process facility (F1, F2, F3, F4). Next, compare the change values of the level gauges G1, G2, G3, and G4 with the change values of the flow gauges D1, D2, D3, and D4, and store any of the plurality of storage tanks T1, T2, T3, T4. A second step (S20) of recognizing how many chemicals have leaked from the tank (S23); A third step (S30) in which the type and amount of leaked chemicals recognized in the second step are transmitted to the control unit by wireless communication; And the controller sends a disaster message to local residents within the scope of influence by using a database that calculates the scope of influence of chemical substances stored in storage tanks (T1, T2, T3, and T4) according to the Chemical Substance Management Act (S40) );.

At this time, the text sent in the fourth step (S40) may include an evacuation site.

In addition, the evacuation site is calculated by inputting only the current wind speed in the database for calculating the impact range of the chemical.

By using a database that calculates the impact range of chemical substances stored in storage tanks (T1, T2, T3, and T4) according to the Chemical Management Act, disaster messages are sent to local residents within the scope of the spilled chemical substances. You can make them evacuate.

5 is a view schematically showing a hazardous chemical treatment system according to a fourth aspect of the present invention.

The hazardous chemical treatment system according to the fourth aspect of the present invention is a plurality of storage tanks (T1, T2) disposed in the discharge wall (2) as shown in FIG. 5 but in an area defined by the flow path (4). ,T3,T4) as a system for treating hazardous chemicals leaking, a first opening/closing valve 6a is installed in the chemical treatment furnace 6 connecting the flow path 4 and the wastewater treatment plant K, A second opening/closing valve 8a is installed in the rainwater furnace 8, which is branched from the chemical treatment furnace 6 and discharges rainwater.

In addition, a pH adjusting part 10 is connected between the flow path 4 and the first opening/closing valve 6a in the chemical treatment furnace 6 to at least any one of a plurality of storage tanks T1, T2, T3, T4. Neutralize the pH of chemicals leaked from one storage tank and move them to the wastewater treatment plant (K).

The pH adjusting unit 10 is composed of an acidic material injector 12 and a basic material injector 14 and is respectively connected to a chemical treatment furnace 6, wherein the control unit is an acidic material injector according to the pH of the leaked chemicals ( 12) Alternatively, the basic material injector 14 is controlled to neutralize it to a pH of 7 to 8.

At this time, the first opening/closing valve 6a, the second opening/closing valve 8a, and the pH adjusting unit 10 are made to be capable of wireless communication with the control unit.

On the other hand, in the hazardous chemical treatment system according to the fourth aspect of the present invention, as in the first aspect described above, chemical substances leaking from the plurality of storage tanks (T1, T2, T3, T4) through the following process Will be detected.

That is, when a chemical leaks from at least one of the plurality of storage tanks T1, T2, T3, and T4, the leakage of the chemical is primarily performed by the leak detection means S installed in the discharge wall 2 Detect, measure the change value of the level gauges (G1, G2, G3, G4) respectively installed in the plurality of storage tanks (T1, T2, T3, T4), a plurality of storage tanks (T1, T2, T3, T4) And the flow gauge (D1, D2, D3, D4) installed in each pipe (B1, B2, B3, B4) connecting each process facility (F1, F2, F3, F4), and then measuring the level By comparing the change values of the gauges G1, G2, G3, and G4 with the change values of the flow gauges D1, D2, D3, and D4, how much in any of the storage tanks T1, T2, T3, T4 Secondary recognition of the leakage of as many chemicals.

In this way, chemicals leaked from the storage tanks T1, T2, T3, and T4 are neutralized before being introduced into the wastewater treatment plant K to prevent contamination of the environment.

6 is a table showing the operating states of the first opening and closing valve and the second opening and closing valve employed in the hazardous chemical treatment system according to the fourth aspect of the present invention.

If nothing is detected by the leak detection means (S) and there is no change in the level gauges (G1, G2, G3, G4) and flow gauges (D1, D2, D3, D4), the first open/close valve (6a) and the second open/close valve (8a) is all closed, the leak detection means (S) detects rain water and the level gauges (G1, G2, G3, G4) and the flow gauges (D1, D2, D3, D4) is the first opening and closing The valve 6a is closed and the second opening/closing valve 8a is opened, detecting chemicals in the leak detection means S and level gauges G1, G2, G3, G4 and flow gauges D1, D2, D3 , When the flow rate loss due to the difference of D4) occurs, the first opening/closing valve 6a is opened and the second opening/closing valve 8a is controlled by the control unit.

The present invention described above is not limited by the above-described embodiments and accompanying drawings, and various substitutions, modifications, and changes are possible within the scope of the present invention without departing from the technical spirit of the present invention. It will be obvious to those with ordinary knowledge.

2: Discharge wall 4: Euro
6: Chemical treatment furnace 6a: 1st open/close valve
8: Rainwater furnace 8a: Second opening and closing valve
10: pH control unit 12: acidic material injector
14: basic material injector S: leak detection means
T1, T2, T3, T4: storage tanks G1, G2, G3, G4: level gauge
F1, F2, F3, F4: Process equipment P1, P2, P3, P4: Pump
D1, D2, D3, D4: flow gauge

Claims (3)

A method for detecting and alerting hazardous chemicals leaking from a plurality of storage tanks disposed in a discharge wall but in a region defined by a flow path,
A first step of detecting a leak of the chemical in a leak detection means installed in the discharge wall when the chemical leaks in at least one of the plurality of storage tanks;
Measure the change value of the level gauge installed in each of the plurality of storage tanks, measure the change value of the flow gauge installed in each pipe connecting the plurality of storage tanks and each process equipment, and then change the change value of the level gauge A second step of comparing the change values of the flow rate gauge and how many chemicals have leaked from which of the plurality of storage tanks;
A third step in which the type and amount of leaked chemicals recognized in the second step are transmitted to the control unit by wireless communication; And
The control unit utilizes a database that calculates the range of influence of chemical substances stored in a storage tank according to the Chemical Management Act, and sends a disaster message to local residents within the scope of the impact. Leak alarm method.
The method according to claim 1,
Characters sent out in the fourth step is a hazardous chemical leak warning method, characterized in that it comprises an evacuation site.
The method according to claim 2,
The evacuation site is a harmful chemical leak warning method, characterized in that calculated by inputting only the current wind speed in the database for calculating the impact range of the chemical.

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