KR20170131016A - Real time corrosion risk management system using portable terminal and method thereof - Google Patents

Abstract

The present invention relates to a system and a method to manage a corrosion risk in real time by using a portable terminal. The system includes: a corrosion risk evaluation tool evaluating a corrosion risk of a facility; a corrosion risk grade evaluating tool evaluating a corrosion risk grade based on the corrosion risk evaluated by the corrosion risk evaluating tool; a facility-risk grade matching tool making a list by matching the corrosion risk grade with the facility installed in the business place; a remaining lifespan evaluating tool evaluating a remaining lifespan of the facility; a recognition tag attached to each facility in the business place, and recording recognition information of each facility; a portable terminal recognizing and transmitting the recognition information of each facility from the recognition tag to a main server, and confirming the corrosion risk grade and the remaining lifespan in real time from the main server; and the main server receiving the corrosion risk grade and the remaining lifespan from the facility-risk grade matching tool and the remaining lifespan evaluating tool, and transmitting the received corrosion risk grade and remaining lifespan to the portable terminal. According to the present invention, the system is capable of minimizing damage by accidents and effectively preventing accidents by corrosion by confirming a corrosion risk of a facility in an installation position of the facility in real time through the portable terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to a real-time corrosion risk management system and a real-time corrosion risk management system using a portable terminal,

The present invention relates to a real-time corrosion risk management system and method using a portable terminal, and more particularly, to a system and a method for real-time corrosion risk management using a portable terminal, in which the risk of corrosion is checked in real time in plant facilities such as high- The present invention relates to a real-time corrosion risk management system and method using a portable terminal capable of preventing an accident caused by corrosion and minimizing damage.

High pressure toxic gas related facilities, plant facilities such as oil refineries and petrochemical plants are exposed to corrosion. Corrosion is also caused by the natural environment, but in most cases it is caused by corrosive substances such as toxic gases, flammable hydrocarbons, strong acids and strong bases treated in the plant facilities, To increase the corrosion rate. As a result, corrosion of plant equipment installed in workplaces in almost all industrial sectors is inevitable, resulting in increased operating and maintenance costs for plant equipment.

Generally, corrosion is achieved by means such as material selection, design changes, process changes, corrosion inhibitors, protective coatings and refractory lining. .

However, accidents such as high-pressure toxic gas leakage, fire and explosion due to corrosion are frequently occurring in domestic as well as overseas, and the economic and human damage caused by this is serious. Generally, most workplaces are exposed to the risk of corrosion due to the subjective judgment of the worker (manager) on the ground that the system for corrosion risk and management is not established.

Recently, there has been a need for corrosion risk management to manage the risk of corrosion and to prevent accidents caused by corrosion, and some research and techniques have been tried. For example, U.S. Patent Publication No. US2008-0257782, Korean Patent No. 10-1084637, and Korean Patent No. 10-1404925 disclose a method for managing the risk of corrosion occurring at refineries and petrochemical plants and preventing corrosion Technology.

As shown in the above prior art documents, the risk of corrosion of plant equipment is evaluated based on facility layout chart (process flow chart) and information of plant facility (type of equipment, material, usage history, operation data, etc.) Diagnosis). In general, for refinery or petrochemical plants, the corrosion risk assessment is based on the API-571, API-580 and API (Risk Based Inspection) procedures developed by the American Petroleum Institute (API) -581 and so on.

However, the conventional techniques including the above-mentioned prior art documents are not systematic and practical corrosion risk management methods. Specifically, the corrosion risk management method according to the prior art is a measure for predicting the risk of corrosion by deriving the main variables affecting the corrosion, and it is necessary to systematically manage the risk of corrosion by location of each plant facility, There is a problem that it is difficult to check and manage in real time.

On the other hand, accidents caused by leakage of high-pressure toxic gas are very serious among accidents caused by corrosion. For example, in Korea, it has recently started a hydrogen leak (five deaths, 18 injured) in 2012. In 2013, hydrogen fluoride leakage occurred at portable parts manufacturers in Samsung Cheil Industries and Samsung Electronics Hwasung Semiconductor Plant, Toxic gas accidents such as chlorine gas leaks occurred in SK Nicks, Ansan Banwol Industrial Complex and Samsung Precision Chemical Ulsan Plant occurred frequently.

As in the above cases, high-pressure toxic gas leak accidents are not only very damaging to people, but also cause social anxiety. Generally, high pressure toxic gas leakage accidents are mainly caused by corrosion, and in most cases it is reported to be caused by internal corrosion in tanks, pipe fittings, and the like.

However, no method has been proposed to evaluate the risk of corrosion (analysis of corrosion accident result) and management in high pressure toxic gas related facilities. Specifically, the corrosion risk management method according to the prior art including the above-mentioned prior art documents is applied to an oil refinery or a petrochemical plant and is applied to a high pressure toxic gas related facility where corrosion is caused by a high pressure toxic gas There is a problem that it is difficult and difficult to be reliable.

U.S. Published Patent Application No. US2008-0257782 Korean Patent No. 10-1084637 Korean Patent No. 10-1404925

Accordingly, the present invention systematically establishes the risk and management of corrosion, and enables the risk of corrosion to be confirmed and managed in real time on the site by installation location of each plant facility And to provide a real-time corrosion risk management system and method capable of effectively preventing accidents caused by corrosion and minimizing accident damage.

In addition, the present invention has not been attempted in the past, and a method for evaluating the risk of corrosion (accident result analysis method), which is one of the main causes of toxic gas accidents, is established for a high pressure toxic gas facility, The present invention provides a real-time corrosion risk management system and method that can establish the safety technology necessary to minimize the risk of corrosion of facilities.

According to an aspect of the present invention,

Corrosion risk assessment tool to assess corrosion risk of equipment;

A corrosion risk rating tool for assessing a corrosion risk rating based on the corrosion risk rating evaluated by the corrosion risk assessment tool;

A facility-hazard class matching tool that catalogs and correlates the corrosion hazard ratings evaluated in the corrosion hazard assessment tool with those installed in the plant;

A remaining life assessment tool for assessing the remaining life of the facility; And

A real-time corrosion risk management system including a main server capable of receiving a corrosion risk level and a remaining life time of each facility from the facility-risk class matching tool and the remaining life evaluation tool to confirm the corrosion risk level and remaining life of each facility do.

Further, according to the present invention,

Corrosion risk assessment tool to assess corrosion risk of equipment;

A corrosion risk rating tool for assessing a corrosion risk rating based on the corrosion risk rating evaluated by the corrosion risk assessment tool;

A facility-hazard class matching tool that catalogs and correlates the corrosion hazard ratings evaluated in the corrosion hazard assessment tool with those installed in the plant;

A remaining life assessment tool for assessing the remaining life of the facility;

A tag attached to each facility installed in the workplace and recording recognition information of each facility;

The recognition information of each facility is recognized from the recognition tag attached to each facility at the location where the facility in the workplace is installed and transmitted to the main server and the corrosion risk level and remaining life of each facility received from the main server can be checked in real time A portable terminal; And

And a main server for receiving the corrosion risk level and remaining life of each facility from the facility-risk class matching tool and the remaining life assessment tool, and transmitting the corrosion risk class and remaining life of each facility to the portable terminal Provides real-time corrosion risk management system.

According to the embodiment of the present invention, it is preferable that the portable terminal provides an alarm when at least one selected from the corrosion risk class and the remaining service life received from the main server is at a danger level. According to a specific embodiment, the portable terminal includes an information recognition unit for recognizing recognition information of each facility from a recognition tag attached to each facility; A transmitter / receiver for communicating with the main server; A display unit for displaying a corrosion hazard level and a remaining service life of each facility received from the main server through the transmission / reception unit; And an alarm unit for providing an alarm when at least one selected from the corrosion severity class and the remaining lifetime received from the main server through the transmitter / receiver unit is at a danger level.

In addition, the corrosion risk assessment tool may include an information input unit for inputting facility information and corrosion rate (mpy) information; A database unit for storing equipment information and corrosion rate (mpy) information input through the information input unit and converting the equipment information and the corrosion rate information into a database; And a numerical operation unit for calculating the corrosion risk from the facility information and the corrosion rate (mpy) information stored in the database unit.

Further, according to the present invention,

The real-time corrosion risk management system according to the present invention is used,

A facility information transmitting step of bringing the portable terminal into contact with a recognition tag attached to the facility and transmitting the recognition information of the facility to the main server through the portable terminal, And

And a corrosion risk information confirmation step of receiving corrosion risk level and remaining lifetime of the facility from the main server through the portable terminal and confirming corrosion risk level and remaining lifetime of the received facility in the portable terminal, Provides a corrosion risk management method.

In addition to this,

A corrosion risk assessment step for evaluating the corrosion risk of the facility;

A corrosion risk level evaluation step of evaluating a corrosion risk level based on the corrosion risk level evaluated in the corrosion risk assessment step;

A facility-hazard level matching step for matching and listing the corrosion hazard rating evaluated in the corrosion hazard rating evaluation step with the facility installed in the workplace;

A remaining life evaluation step of evaluating a remaining life of the facility;

A facility information transmitting step of bringing the portable terminal into contact with a recognition tag attached to the facility and transmitting the recognition information of the facility to the main server through the portable terminal, And

And a corrosion risk information confirmation step of receiving corrosion risk level and remaining lifetime of the facility from the main server through the portable terminal and confirming corrosion risk level and remaining lifetime of the received facility in the portable terminal, Provides a corrosion risk management method.

According to an embodiment of the present invention, the workplace is targeted at a toxic gas facility.

Further, in the corrosion risk assessment step,

Based on the API-581 Risk-Based Inspection (RBI) procedure of the American Petroleum Institute (API)

1) selecting a leakage hole size of the facility;

2) calculating a leakage amount of the toxic gas;

3) calculating the leak rate of the toxic gas;

4) determining the leak type based on the leak duration of the toxic gas;

5) determining a mitigation system rating; And

6) calculating the accident damage area by applying the dispersion model proposed by the Center for Chemical Process Safety (CCPS).

Further, in the corrosion risk assessment step,

a) evaluating the probability of corrosion;

b) evaluating the result of the corrosion accident; And

c) numerically calculating the corrosion risk using the results evaluated in a) and b) above,

B) evaluating the corrosion accident result,

Based on the API-581 Risk-Based Inspection (RBI) procedure of the American Petroleum Institute (API)

1) selecting a leakage hole size of the facility;

2) calculating a leakage amount of the toxic gas;

3) calculating the leak rate of the toxic gas;

4) determining the leak type based on the leak duration of the toxic gas;

5) determining a mitigation system rating; And

6) calculating the accident damage area by applying the dispersion model proposed by the Center for Chemical Process Safety (CCPS).

According to the present invention, the risk of corrosion of the facility can be confirmed in real time at the installation position of each facility through the portable terminal. That is, according to the present invention, there is an effect that it is possible to check and manage the corrosion risk level and the remaining life time as corrosion risk information for each facility in the workplace where each facility is installed through the portable terminal in real time. In addition, according to the present invention, it is possible to visually confirm the corrosion risk level of each facility in real time through equipment-hazard class matching. Accordingly, according to the present invention, the risk of corrosion can be effectively and systematically managed, effectively preventing accident caused by corrosion, and minimizing accident damage.

According to the present invention, a method for evaluating the risk of corrosion (accident result analysis method), which is one of the main causes of toxic gas accident, is established for a high pressure toxic gas facility which has not been attempted in the past, And the risk of corrosion in toxic gas facilities can be minimized.

1 is a schematic block diagram of a corrosion risk management system according to an exemplary embodiment of the present invention.
2 is a block diagram of a corrosion risk management system according to an exemplary embodiment of the present invention.
FIG. 3 shows an example of a facility layout diagram that can be used in the present invention.
Figure 4 illustrates the corrosion risk and corrosion hazard rating evaluated according to embodiments of the present invention.
FIG. 5 is a matching list of corrosion hazard classes (equipment-hazard classes) prepared according to the embodiment of the present invention.
6 is a view illustrating a portable terminal in contact with a recognition tag attached to an apparatus according to an embodiment of the present invention.
7 is a perspective view of a portable terminal according to an embodiment of the present invention.
FIG. 8 shows an accident result analysis method that can be applied to evaluate the corrosion risk of a high pressure toxic gas facility according to an embodiment of the present invention.

As used herein, the term "and / or" is used to include at least one of the elements listed before and after. The term "one or more" as used herein means one or more than two.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate exemplary embodiments of the invention and are provided to aid in the understanding of the invention only. In the accompanying drawings, the thickness may be enlarged to clearly show the area of each component, and the technical scope of the present invention is not limited by the thickness, size, and / or ratio shown in the drawings.

The present invention provides a real-time corrosion risk management system and a real-time corrosion risk management method that can confirm the risk of corrosion in real time and manage systematically and / or efficiently, thereby preventing and / or minimizing an accident caused by corrosion. The real-time corrosion risk management method according to the present invention can be implemented through a real-time corrosion risk management system according to the present invention, according to an exemplary embodiment.

FIG. 1 shows a schematic diagram of a real-time corrosion risk management system according to an exemplary embodiment of the present invention. 2 is a block diagram of a real-time corrosion risk management system according to an exemplary embodiment of the present invention.

Referring to FIGS. 1 and 2, a real-time corrosion risk management system according to the present invention includes a corrosion risk assessment tool 10 for evaluating corrosion risk of a facility according to a first aspect of the present invention; A corrosion risk assessment tool 20 for evaluating a corrosion risk rating based on the corrosion risk evaluated in the corrosion risk assessment tool 10; A facility-hazard level matching tool (30) for matching and listing the corrosion hazard rating evaluated in the corrosion risk assessment tool (20) with a facility installed in the workplace; A remaining life evaluation tool 40 for evaluating the remaining life of the facility; A main server 60 that receives the corrosion risk level and remaining life of each facility from the facility-hazard level matching tool 30 and the remaining life assessment tool 40 and confirms the corrosion risk level and remaining life of each facility, .

Further, the real-time corrosion risk management system according to the present invention comprises, according to the second aspect of the present invention, a corrosion risk assessment tool 10 for evaluating corrosion risk of a facility; A corrosion risk assessment tool 20 for evaluating a corrosion risk rating based on the corrosion risk evaluated in the corrosion risk assessment tool 10; A facility-hazard level matching tool 30 for matching and listing the corrosion hazard rating evaluated in the corrosion risk assessment tool 20 with equipment installed in the workplace; A remaining life evaluation tool 40 for evaluating the remaining life of the facility; A recognition tag (T) attached to each facility installed in a workplace and recording recognition information of each facility; The recognition information of each facility is recognized from the recognition tag attached to each facility at the location where the facility is installed in the facility and transmitted to the main server. The corrosion risk level and the remaining life of each facility received from the main server A portable terminal (50) capable of confirming the portable terminal (50); And a main server (60) for receiving the corrosion risk level and remaining life of each facility from the facility-risk class matching tool and the remaining life assessment tool, and transmitting the corrosion risk level and remaining life of each facility to the portable terminal ).

At this time, the main server 60 is connected to at least the equipment-hazardous level matching tool 30, the remaining life evaluation tool 40 and the portable terminal 50 in a wired and / or wireless manner, Receives and stores the corrosion risk grade and remaining life of each facility from the tool 30 and the remaining life evaluation tool 40 and stores the corrosion risk level and remaining life of each of the received facilities in the portable terminal 50 .

Also, the real-time corrosion risk management method according to the present invention uses a real-time corrosion risk management system according to the first aspect of the present invention, wherein, at a location where facilities are installed in a plant, A facility information transmitting step of bringing the portable terminal (50) into contact with the tag and transmitting the identification information of the facility to the main server (60) through the portable terminal (50); And a corrosion risk level and a remaining lifetime of the facility from the main server 60 through the portable terminal 50 and confirm the corrosion risk level and the remaining lifetime of the received facility in the portable terminal 50 Corrosion risk information.

In addition, a real-time corrosion risk management method according to the present invention includes: a corrosion risk evaluation step of evaluating a corrosion risk of a facility according to a second aspect of the present invention; A corrosion risk level evaluation step of evaluating a corrosion risk level based on the corrosion risk level evaluated in the corrosion risk assessment step; A facility-hazard level matching step for matching and listing the corrosion hazard rating evaluated in the corrosion hazard rating evaluation step with the facility installed in the workplace; A remaining life evaluation step of evaluating a remaining life of the facility; A facility information transmitting step of transmitting the recognition information of the facility to the main server 60 via the portable terminal 50 by bringing the portable terminal 50 into contact with the recognition tag attached to the facility, ; And a corrosion risk level and a remaining lifetime of the facility from the main server 60 through the portable terminal 50 and confirm the corrosion risk level and the remaining lifetime of the received facility in the portable terminal 50 Corrosion risk information.

Generally, business sites in almost all industrial fields have a facility layout (= factory layout) that shows the facilities (facilities) in the workplace. As an example of such a facility layout, most workplaces have a process flow diagram and / or P & ID (Pipe & Instrument Diagram).

FIG. 3 shows an example of a facility layout diagram, which illustrates a part of P & The present invention can be implemented by referring to the above facility layout map (P & ID, etc.) according to the exemplary embodiment. That is, the present invention includes a step of using a facility layout diagram (process flow chart and P & ID, etc.) of a previously established business establishment or a facility layout diagram (process flow chart and P & And < / RTI >

The terms used in the present invention have the following meanings.

In the present invention, the "workplace" is a place where corrosion occurs and / or a place where an accident due to corrosion is expected (predicted). In the present invention, the term "workplace" may include, for example, facilities or factories such as high pressure toxic gas related facilities, oil refineries, petrochemical plants, textile factories, leather factories, and environmental facilities However, the present invention is not limited thereto.

In the present invention, the term "facility" refers to a general term " plant " as an individual unit facility (apparatus or parts) installed in the above-mentioned workplace (facility or factory) and / Is used to mean the concept of. Specifically, in the present invention, the term "facility" includes, for example, pipes, flanges, valves, compressors, pressure vessels, pumps, filter units, distillation columns, absorption towers, strippers, heat exchangers, reboilers ), Condensing units, generators, probes, blowers, reactors and storage tanks; And / or " plant " in which one or more of these unit facilities are combined, and may also include the meaning of the term " inventory group " as commonly used in the art in connection with corrosion.

In the present invention, the term " evaluation "includes not only the meaning of 'assessment' commonly used in the art, but also the meaning of 'judgment', 'prediction', 'diagnosis', 'calculation', 'calculation' And " extraction ".

In the present invention, the term " corresponding facility "refers to a facility to detect the degree of corrosion, which means a specific facility installed in the site in the workplace. The above-mentioned facility is illustrated by being denoted by a reference numeral "P" in Fig. Further, the term "each facility" used in the present invention may include the meaning of the corresponding facility P as the case may be.

In the present invention, "manager" is a person who uses the system and method according to the present invention, a safety management inspector of each workplace, and / or a person who confirms (performs) safety management in the field of each workplace. A person who carries the portable terminal 50 and / or a person who manages the main server 60, and the like.

In the present invention, the "location where the facility is installed in the workplace" is a specific place (site) in the workplace where the facility P (= It can be the position of a manager who wants to carry around and check the degree of corrosion while traveling around the workplace.

Hereinafter, exemplary embodiments of a real-time corrosion risk management system according to the present invention will be described together with explanations of exemplary embodiments of each step of the real-time corrosion risk management method according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of exemplary embodiments of the present invention, detailed descriptions of known general functions and / or configurations are omitted.

[1] Corrosion Risk Assessment Step / Corrosion Risk Assessment Tool (10)

Evaluate (calculate) the corrosion risk (risk) (risk) for equipment installed in the workplace, that is, equipment which is likely to be corrosive in the workplace. Corrosion risk can be assessed (calculated) in an arbitrary manner, depending on the manager of the workplace and / or the evaluation expert, which can be evaluated (calculated) numerically in one example. Figure 4 illustrates the results of a corrosion risk assessment (computed) in accordance with an embodiment of the present invention.

In the present invention, the method for evaluating the corrosion risk is not particularly limited. The corrosion risk can be evaluated, for example, by a conventional method. The above corrosion risk is a reference material related to corrosion in this industry. This is a risk based inspection (RBI) procedure developed by the American Petroleum Institute (hereinafter referred to as "API") (API), API-580 and / or API-581, based on data from the Chemical Process Safety Center (CCPS) and / or the American Society of Corrosive Products Based on the criterion (method) created, it can be evaluated based on (reference). The risk of corrosion may be measured by an API-DB using a corrosion database (DB) including, for example, the type of equipment, the material of the equipment, the use history of the equipment, the operation data of the equipment, 571, API-580 and / or API-581 based on data (reference), the degree of corrosion risk can be numerically evaluated (calculated).

In addition, the corrosion risk can be evaluated (calculated) numerically through the following equation in one example.

[Mathematical Expression]

R = F x C

In the above equation, R is the risk of corrosion, F is an evaluation index (index of corrosion incidence evaluation index) indicating the possibility of corrosion, and C is an evaluation index (index of corrosion accident result evaluation index) In the above equation, F and C are arbitrary numerical values, and they can be arbitrarily determined. In one example, F is a possibility of a corrosion accident, which can be evaluated (predicted) by the number of times such as once, twice, three times, n times per year on the basis of one year. Here, n may be a natural number of 1 or more, for example, 1 to 180, or 2 to 50 times. And C is the result of corrosion (influence), which can be expressed numerically according to the anticipated outcome of corrosion, fire, and explosion due to corrosion.

In the present invention, F and C of the above equations can be evaluated to arbitrary numerical values using the corrosion database (DB) and data (API-571, API-580 and / or API-581 etc.) It can be self-evident. That is, the average technician in the field related to the corrosion of the equipment includes the type of equipment, the material of the equipment, the use history of the equipment, the operation data of the equipment, and / or the facility information such as the name of the fluid (corrosive substance) (RBI) procedures developed by the American Petroleum Institute (API), such as API-571, API-580 and / or API-581 C, and the corrosion risk R can be numerically evaluated (calculated) according to the above equation, so that a detailed description thereof will be omitted.

Further, according to an exemplary embodiment of the present invention, the corrosion risk is based on a facility database (hereinafter abbreviated as "facility DB") and a corrosion rate database (hereinafter abbreviated as "corrosion rate DB") (Calculated). Specifically, in the present invention, the corrosion risk assessment step includes the steps of building a facility DB, constructing a corrosion rate DB, evaluating (calculating) a corrosion risk level using the facility DB and the corrosion rate DB . ≪ / RTI > At this time, in the step of evaluating (calculating) the corrosion risk, it is possible to numerically evaluate (calculate) the corrosion risk degree from the data stored in the facility DB and the corrosion rate DB.

The facility DB is a database for facility information of all facilities installed in a business place. The facility information may be different for each workplace, but it may include, for example, process information, facility property information, design information, and / or driving information.

The process information includes a target process name and / or a fluid name of a facility, that is, a process name and / or a fluid name (corrosive substance) handled by each facility, and the facility property information includes a name ), The function of each facility and / or the form of each facility. The design information includes material, thickness, design temperature, design pressure, use history, PWHT, coating material, insulation and / or corrosion allowance of each facility, and the operation information Operation temperature, operating pressure, pH, and / or fluid name (corrosive substance) of each facility.

When establishing the facility DB, the score can be specified and matched according to each facility information. The establishment of the facility DB using the facility information may be obvious to a person skilled in the art and it is also possible to refer to the facility layout diagram (P & ID) of the workplace and / or the API-571, API-580 and API- Data can be performed based on (reference).

The corrosion rate DB is a database of the corrosion rate (mpy: millimeter per year) for each facility. The corrosion rate (mpy) may be numerically evaluated based on, for example, the type of corrosion and the cause of corrosion (corrosive substances, electrical, chemical and / or environmental factors, etc.). These corrosion rates (mpy) can be readily apparent to those skilled in the art, and can also be assessed by establishing criteria according to the site or by reference to materials which may be referred to in the art for corrosion rate (mpy).

The corrosion risk can be evaluated (calculated) numerically based on the facility DB and the corrosion rate DB as described above. For example, in establishing a facility DB, a total of 20 pieces of process information, 20 pieces of equipment information, 30 pieces of design information, and 30 pieces of operation information are set, and a total score is arbitrarily set for each piece of information, In addition, a detailed score is arbitrarily set according to the detailed items (facility name, material, fluid name, etc.) of each information, and the score for each item of the facility DB is evaluated (calculated). The numerical value of the corrosion risk level is calculated (calculated, for example, by multiplying, dividing, adding, subtracting, etc.) by a specific formula in accordance with the score according to the facility DB and the corrosion rate (mpy) )can do.

In addition, according to another exemplary embodiment of the present invention, the corrosion risk is calculated based on the facility DB and the corrosion rate DB, F (Corrosion Incident Probability Evaluation Index) and C (Corrosion Accident Evaluation Index) , And the corrosion risk R can be numerically evaluated (calculated) according to the above equation.

According to the present invention, in the evaluation of the corrosion risk, when evaluating based on the facility DB and the corrosion rate DB as described above, the corrosion risk can be evaluated systematically, clearly and reliably. Concretely, in numerically evaluating (calculating) the corrosion risk degree, when evaluating at least the corrosion rate DB as an evaluation factor, it is more systematic than the conventional method, and has clarity and reliability.

In addition, the corrosion risk assessment can be implemented through, for example, the corrosion risk assessment tool 10 constituting the system according to the present invention. In the present invention, the corrosion risk assessment tool 10 is not particularly limited as long as it has a function capable of evaluating (calculating) the corrosion risk of the facility. The corrosion risk assessment tool 10 may include a software program capable of numerically evaluating the corrosion risk, which may be selected from a computer or the like having a numerical calculation function in detail. In one example, the corrosion risk assessment tool 10 may include a software program that can numerically evaluate the corrosion risk based on the facility DB and the corrosion rate DB as described above.

Referring to FIGS. 1 and 2, according to an exemplary embodiment of the present invention, the corrosion risk assessment tool 10 includes an information input unit 12 for inputting information for evaluating corrosion risk, A database unit 14 for storing information inputted through the input unit 12 into a database and a numerical operation unit 16 for numerically calculating (calculating) the degree of corrosion risk from the information stored in the database unit 14 have. The corrosion risk assessment tool 10 may further include a corrosion risk degree output unit 18 that outputs a corrosion risk degree calculated by the numerical value calculation unit 16. [

In the information input unit 12, relevant information for evaluating the degree of corrosion risk is inputted to all facilities installed in the workplace. In the information input unit 12, for example, facility information such as the above-mentioned process information, facility information, design information, and / or operation information may be input as information for establishing the facility DB. In addition, this information can be inputted by referring to the facility layout map (P & ID, etc.) of the corresponding workplace as the case may be. In addition, the information input unit 12 may input corrosion rate (mpy) information for constructing the corrosion rate DB.

The database unit 14 constructs and stores the facility DB and the corrosion rate DB from the facility information and the corrosion rate (mpy) information as described above. The numerical value computing unit 16 numerically calculates the degree of corrosion risk from the facility DB and the corrosion rate DB stored in the database unit 14, and it can be calculated, for example, according to the above equation.

Further, according to another exemplary embodiment of the present invention, the corrosion risk assessment tool 10 may include a corrosion accident probability evaluation module and a corrosion accident result evaluation module, as described above. The corrosion accident possibility evaluation module and the corrosion accident result evaluation module can evaluate (calculate) F and C of the above equations based on the facility DB and the corrosion rate DB, respectively.

Specifically, the corrosion accident possibility evaluation module uses the facility information stored in the facility DB, based on data such as API-571, API-580 and API-581, The F (corrosion probability evaluation index) of the equation can be evaluated (calculated) by the manager (and / or expert) at the workplace at an arbitrary numerical value (annual number of times). Also, the corrosion accident result evaluation module may use the corrosion rate (mpy) information stored in the corrosion rate DB to calculate the corrosion rate based on the conventional methods such as API-571, API-580 and API-581 , The C (Corrosion Accident Result Evaluation Index) in the above equation can be evaluated (calculated) by a manager (and / or an expert) at the workplace at an arbitrary numerical value.

[2] Corrosion Hazard Assessment Phase / Corrosion Hazard Assessment Tool (20)

The corrosion risk level is evaluated (extracted) based on the corrosion risk evaluated in the corrosion risk assessment step. The corrosion risk level may be classified into a plurality of sections, and each section may be ranked and evaluated by using numbers, letters, symbols, or combinations thereof, and may be evaluated as N classes, for example . Here, N may be, for example, 3 to 15, or 4 to 10.

FIG. 4 illustrates the evaluation result of the corrosion risk grade according to the interval of corrosion risk. Referring to FIG. 4, the corrosion risk can be evaluated to a value within a range of, for example, 1 to 20, and a range is determined for the corrosion risk, and for each section, for example, A grade, B grade, D grades, and so on.

The evaluation of the corrosion risk grade can be implemented through the corrosion risk grade evaluation tool 20 constituting the system according to the present invention. In the present invention, the corrosion risk assessment tool 20 can be selected from a software program that can determine the corrosion risk level for each section, determining the interval (range) according to the set value based on the corrosion risk, It is not limited.

[3] Equipment - Hazard Level Matching Step / Facility - Hazard Rating Matching Tool (30)

The corrosion hazard rating evaluated in the above corrosion risk assessment stage is cataloged and matched with the equipment installed in the workplace. As described above, a part of the P & ID is schematically illustrated as an example of the facility layout in Fig. FIG. 5 is a diagram illustrating a part of a list cataloged by matching each facility with a corrosion risk level according to an embodiment of the present invention.

Generally, in almost all workplaces, the process flow chart and the facility layout chart such as P & ID are provided with information (property) of the facility such as the process flow of the facility, the connection relationship between the facilities, the name of the facility and / Is being written. The facility layout diagram can be written in a unique code (identification code) for each facility so that information (attributes) of each facility can be easily recognized. For example, unique codes such as "C-5401", "Q-5401", and "S-5401" can be prepared for each facility as shown in FIG.

In the facility-hazard level matching step, as shown in FIG. 5, each facility installed in the workplace and the corrosion risk level of each facility are matched and cataloged. In this case, as shown in FIG. 5, the facility-hazard level matching can be cataloged by matching the inherent code and the hazard level of each facility with reference to the facility layout diagram.

The facility-hazard class matching can be implemented through the equipment-hazard class matching tool 30 that constitutes the system according to the present invention. In the present invention, the facility-hazard class matching tool 30 can be selected from software programs that can be cataloged by matching the corrosion hazard rating evaluated in the corrosion risk assessment tool 20 with each facility installed in the workplace. Further, the matching list of the equipment-hazardous grades can be confirmed through the display unit 62 of the main server 60 described later, for example.

 According to the present invention, corrosion hazard level for each facility can be visually confirmed in real time through the above facility-hazard class matching. Further, referring to Fig. 5, a facility with a unique code of "S-5401" is identified (evaluated) as "D grade" At this time, the manager can strengthen the management of the replacement and maintenance for the facility of "S-5401" having a high degree of corrosion risk.

[4] Residual Life Assessment Phase / Residual Life Assessment Tool (40)

In order to efficiently manage facility replacement and maintenance, the remaining service life for each facility is estimated (predicted). The remaining lifetime can be assessed by setting any conditions and criteria according to the workplace.

The remaining service life can be evaluated (predicted), for example, based on at least the corrosion rate (mpy) of each facility. For example, the residual service life may be evaluated by including at least the corrosion rate (mpy) of each facility as an evaluation condition, and further including related information of each facility. At this time, the related information is as described above, and may include, for example, a production year of each facility, a use history (use period) and / or a fluid name. The above remaining life is evaluated (calculated) numerically through a specific formula using the above conditions.

The remaining life evaluation can be implemented through the remaining life evaluation tool 40 constituting the system according to the present invention. In the present invention, the residual service life evaluation tool 40 may be one which can numerically evaluate the remaining service life of each facility based on at least the corrosion rate (mpy) of each facility. The remaining life evaluation tool 40 can be selected from a software program capable of numerically evaluating the remaining service life, which can be selected from a computer or the like having a numerical calculation function in detail.

According to an exemplary embodiment of the present invention, the remaining life evaluation tool 40 includes a condition input unit for inputting an evaluation condition, a remaining life database unit for storing conditions inputted through the condition input unit and forming a database, And a remaining lifetime numerical operation unit for numerically calculating the remaining lifetime from the database stored in the remaining lifetime database unit. Further, the remaining service life evaluation tool 40 may further include a remaining service life output unit for outputting the remaining service life calculated by the numerical operation unit.

An evaluation condition for evaluating the remaining service life is input to the condition input section. At least the corrosion rate (mpy) of each facility may be input as the evaluation condition in the condition input unit, and the related information of each facility as illustrated above may be further input. The remaining life span database unit builds and stores the remaining life span database from the above evaluation conditions. The remaining life time numerical operation unit numerically calculates (calculates) the remaining life of each facility based on the remaining life time database, which can be calculated through a specific formula, for example. For example, the remaining lifetime can be evaluated (calculated) through a calculation formula of RL = kY / M. Where Y is the year of production of the plant, and M = corrosion rate (mpy) x 10 < ³ >, where RL is the remaining service life (e.g. And k is the remaining lifetime coefficient, which can be specified according to the facility information or can be set to any numerical value depending on the administrator of the workplace. K may be an integer between 1 and 10, for example. The calculation formula of the remaining service life may be arbitrarily determined according to the workplace, and is not limited by the above calculation formula.

[5] Corrosion risk information confirmation step / portable terminal 50 / main server 60

As corrosion hazard information for the safety management of the facility, confirm the corrosion hazard rating and residual life as evaluated above. This corrosion risk information confirmation step is implemented through the recognition tag (T), the portable terminal (50) and the main server (60) constituting the system according to the present invention.

At this time, according to the present invention, the recognition tag T is attached to each facility P installed in the workplace. That is, the recognition tag T is attached to all the facilities P where there is concern about corrosion in the workplace. In order to confirm the above corrosion risk information, the portable terminal 50 is attached to the recognition tag T attached to each facility P at the position where the facility P in the workplace (see Fig. 6) The portable terminal 50 is checked in real time for the corrosion risk level and remaining service life of each facility P. [ That is, according to the present invention, the corrosion risk level and the remaining service life of the facility P are confirmed in real time on the site in the establishment where the facility P is installed through the recognition tag T and the portable terminal 50 Management. Also, the corrosion risk level and the remaining service life of the facility P can be confirmed through the main server 60 as well. As mentioned above, in the present invention, the facility (P) is a facility to detect the degree of corrosion, and it is a facility installed on site in the workplace.

According to a specific embodiment of the present invention, the corrosion risk information for the facility P is transmitted to a recognition tag T attached to the facility P at a location where the facility P in the workplace is installed, (P) is transmitted from the main server (60) to the main server (60) via the portable terminal (50) The corrosion risk level and the remaining lifetime of the corresponding facility P are received through the portable terminal 50 and the corrosion risk information and the remaining lifetime of the received facility P are confirmed by the portable terminal 50 . Also, the corrosion risk level and the remaining service life of the facility P can be confirmed through the main server 60 as well.

The recognition tag T is attached to each facility P installed in a business site, and identification information of each facility P is recorded and / or stored therein. In the present invention, the recognition tag (T) is not particularly limited as long as it can recognize each facility (P). Specifically, in the present invention, the recognition tag T may be one in which the recognition information of each facility P is recorded (and / or stored), and the recognition information recorded (and / or stored) in the recognition tag T is And is not particularly limited as long as it is information that can identify what each facility P is. The recognition information can be recorded and / or stored in the recognition tag T in a unique code (recognition code), for example, through a combination of letters, numbers, symbols, figures, and / or patterns.

In the present invention, the recognition tag T includes an electronic and / or non-electronic medium. The recognition tag T may include an electronic medium such as a Radio Frequency Identification (RFID), a bar code, and / or a Quick Response Code (QR code). The recognition tag T is a non-electronic medium and is a unique code (recognition code) such as "C-5401", "Q-5401", "S- A recording sheet on which a recording sheet is recorded, and the like.

The portable terminal 50 is carried by an administrator and recognizes recognition information of each facility P from a recognition tag T attached to each facility P and transmits (transmits) So long as the corrosion risk level and remaining life of each facility P can be confirmed in real time at the installation position of each facility P in the workplace. The portable terminal 50 is wirelessly communicated with the main server 60 and receives the corrosion risk level and remaining service life for each facility P from the main server 60 in real time. The portable terminal 50 may be selected from, for example, a mobile terminal such as a smart phone or a tablet PC, but is not limited thereto.

7, the portable terminal 50 recognizes recognition information (= unique information) of each facility P from the recognition tag T attached to each facility P according to one embodiment An information recognition unit 51; A transmission / reception unit 52 for communication with the main server 60; And a display unit 54 for displaying the degree of corrosion risk and the remaining service life of each facility P received from the main server 60 through the transmission / reception unit 52.

The information recognition unit 51 electronically recognizes recognition information (= unique information) of the facility P from the recognition tag T when the information recognition unit 51 contacts the recognition tag T attached to each facility P It is good if it can be done. At this time, in the present invention, the "contact" does not mean a complete touch, but it may be enough to recognize the recognition information (= unique information) recorded in the recognition tag T at a short distance electronically. Specifically, the information recognition unit 51 may recognize the recognition information of the facility P when the portable terminal 50 is brought close to the recognition tag T.

The transmitting / receiving unit 52 is not limited as long as it is capable of wireless communication with the main server 60. The display unit 54 may display the corrosion hazard level and the remaining service life for each facility P through numerical values, characters, symbols, or the like to the extent that visual observation is possible. , A display panel such as an LCD and a PDP. In addition, as shown in FIG. 7, the portable terminal 50 may include a handle 53 for convenience of carrying. In addition, the portable terminal 50 may include an operation button 51a for operating (for example, turning on / off) the information recognition unit 51. The operation button 51a may include a handle 53 As shown in FIG.

At this time, when the operation button 51a is pressed, the information recognition unit 51 recognizes the recognition information from the recognition tag T attached to the facility P, and the transmission / P to the main server 60. Here, The main server 60 transmits (transmits) the corrosion risk level and the remaining service life of the facility P to the portable terminal 50 and transmits corrosion degree and residual life of the facility P received from the main server 60 to the portable terminal 50, The danger level and the remaining lifetime can be displayed on the display unit 54 of the portable terminal 50. [

1 and 2, the portable terminal 50 includes a transmitting / receiving unit 52 for communicating with the main server 60 and a main server 60 through the transmitting / (54) for displaying the corrosion hazard grade and remaining life for each facility (P) received (transferred) from the facility (60) And an information input unit 56 that can input information. At this time, the information input unit 56 may be useful when the recognition tag T is a non-subscriber.

More specifically, the information inputting section 56 writes the recognition information recorded in the recognition tag T in a character (unique code) such as "C-5401", "Q-5401", " In this case, the manager visually confirms the recognition information (characters, etc.) recorded in the recognition tag T and inputs the recognition information of the facility P to the information input unit 56 . The information input unit 56 may be selected from, for example, a key board, a touch panel, or the like in which numbers, characters, and / or symbols are displayed.

In addition, the portable terminal 50 is preferably capable of providing an alarm when at least one selected from the corrosion severity level and the remaining lifetime received from the main server 60 is at a dangerous level. Specifically, when the portable terminal 50 is placed on the recognition tag T attached to the facility P, the portable terminal 50 recognizes the recognition information of the facility P and transmits the recognition information to the main server 60 Receives the corrosion risk level and remaining service life of the facility P from the main server 60 and displays the corrosion risk level and remaining service life of the corresponding facility P on the display unit 54 The corrosion risk information for the facility P can be checked in real time by the manager while at the same time an alarm is issued when the corrosion risk level and / (Alarm) is preferably provided.

The danger level is an arbitrary set value (= reference value) predetermined by the manager or the like, and may be different depending on the type of the facility P. For example, assuming that the installation P is a joint where a hydrogen fluoride (HF) gas flows, when the corrosion hazard grade is less than C grade in FIG. 4 and when the remaining life is less than 2 months, The portable terminal 50 can provide (issue) an alarm (alarm). At this time, the alarm (alarm) may be selected from a text message, sound (alarm), light (light), and / or color.

The portable terminal 50 may further include an alarm part 55 (see FIG. 1) for providing the alarm according to a specific embodiment. The alarm unit 55 is operated according to the risk of corrosion risk and / or the risk of remaining life (predetermined risk water level), and can notify a danger warning through sound (alarm) and light . Specifically, the alarm unit 55 may be used when the corrosion degree of the equipment P is high and needs to be replaced or repaired, and / or when the remaining life of the equipment P is short and needs to be replaced or repaired Lt; / RTI > The operation of the alarm unit 55 is operated according to a preset value set by an administrator, and the set value can be managed and controlled by the main server 60. [

The main server 60 integrally manages the system according to the present invention. The main server 60 is connected to the corrosion risk assessment tool 10, the corrosion risk assessment tool 20, the equipment-risk rating tool 30, the remaining life assessment tool 40 and / or the portable terminal 50 Interworking. Interworking in the present invention means information sharing through electrical, electronic and / or communication. The main server 60 is interlocked with at least the equipment-risk class matching tool 30, the remaining life evaluation tool 40 and the portable terminal 50.

In addition, the main server 60 is interlocked with at least the portable terminal 50 through wireless communication. In the present invention, the wireless communication includes WLAN (Wireless LAN), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Global System for Mobile communications (GSM), and / For example, a 4G method in which a specific IP is allocated and used, or communication using an LTE router.

The main server 60 receives the corrosion risk level and the remaining service life of each facility P from the facility-hazard level matching tool 30 and the remaining life evaluation tool 40, A corrosion risk grade and a remaining service life to the portable terminal 50. [ The main server 60 receives the corrosion risk level and the remaining service life of each facility P from the equipment-hazard class matching tool 30 and the remaining service life evaluation tool 40, Rating and remaining life can be confirmed.

1 and 2, the main server 60 includes a transmitter / receiver 66 for communication with the portable terminal 50 and a controller 64 for integrated management of the system according to the present invention . In addition, the main server 60 may further include a display unit 62. In addition, the main server 60 may further include an alarm unit (not shown).

The transmitting / receiving unit 66 may be one which enables wireless communication with the portable terminal 50 for transmitting / receiving information. The control unit 64 collects and manages the corrosion risk information evaluated by the tools 10, 20, 30 and 40 and controls the information transmission system with the portable terminal 50. The display unit 62 displays corrosion risk information evaluated by the tools 10, 20, 30, and 40.

The display 62 may display a corrosion hazard rating of each facility P that is specifically assessed by the corrosion risk assessment tool 20 and / or the facility- . Also, the display unit 62 can display the remaining service life of each facility P evaluated by the remaining service life evaluation tool 40. In addition, the display unit 62 may list the equipment-risk class matching list generated by the equipment-risk class evaluation tool 30 as described above. In addition, the alarm unit (not shown) that can be installed in the main server 60 can prevent the corrosion risk level and / or the remaining service life of the facility P from being dangerous as described above through the portable terminal 50 If there is an alarm (alarm) is provided.

Meanwhile, the corrosion risk management system according to the present invention may further include a position information providing tool (not shown) for storing and providing position information of each facility P installed in the workplace. The location information providing tool is interlocked with the main server 60 so that the position information of each facility P is transmitted to the evaluation tools 10, 20, 30, 40 and / or the main server 60 to provide. In one example, the location information providing tool may provide location information of each facility P corresponding to the facility layout of each workplace.

In the corrosion risk management system according to the present invention, the evaluation tool 10, 20, 30, 40 and the main server 60 are integrated into one apparatus (computer or the like) Or may be installed in a plurality of devices (such as a computer) and interworked through wired and / or wireless communication. For example, the corrosion risk management system according to the present invention includes one PC with the four evaluation tools 10, 20, 30 and 40 installed thereon, a central control PC including the main server 60, The mobile terminal 50, and the like. In addition, in the present invention, the evaluation tools 10, 20, 30 and 40 need only be capable of performing their respective functions, and they may be the evaluation means, the evaluation program, and / And the like.

According to the present invention described above, at least the following effects are obtained.

First, the corrosion risk (risk) of the facility can be confirmed in real time at the installation position of each facility through the portable terminal 50. That is, according to the present invention, the corrosion risk level as corrosion risk information for each facility (corresponding facility) in the workplace where each facility (that is, a facility to detect corrosion) is installed through the portable terminal 50 The remaining life can be checked and managed in real time. In addition, according to the present invention, corrosion hazard level of each facility can be clearly identified in real time through facility-hazard level matching as described above. At this time, the manager can intensively strengthen the maintenance such as replacement or repair for the facility (P) having a high degree of corrosion risk.

According to a preferred embodiment of the present invention, when the recognition tag T is attached to each facility P, the safety manager carrying the portable terminal 50 transmits the recognition tag T to the facility P can be easily transmitted and then the corrosion risk level and the remaining life time as a degree of corrosion risk for the facility P are received from the main server 60 and can be confirmed in real time through the portable terminal 50 have. In addition, the data risk of the facility (P) is recognized through the transmitted corrosion risk grade and the remaining life and the actual risk of corrosion to the plant (P) is assessed by direct visual inspection The accuracy and reliability of the determination of replacement or repair can be established. In addition, the alarm unit 55 provided in the portable terminal 50 and / or the main server 60 can immediately replace or repair the facility P having a high risk, thereby enhancing management.

Meanwhile, as described above, API-571, API-580 and / or API-581 can be referred to in evaluating the corrosion risk, among which API-581 can be referred to. API-581 provides a methodology for analyzing accident potentials and a method for analyzing accident results in relation to the assessment of damage risks such as corrosion.

However, according to the present inventors, it was found that API-581 is not applicable when a high-pressure toxic gas-related facility is used as a business site. Accordingly, the present invention provides a new method of evaluating corrosion risk and safety management for high pressure toxic gas related facilities. This is described below.

The definition of toxic gas is defined in Article 2 of the Enforcement Regulations of the High Pressure Gas Safety Management Act as "Acrylonitrile, acrylic aldehyde, sulfur dioxide, ammonia, carbon monoxide, carbon disulfide, fluorine, chlorine, methane bromide, methane chloride, Hydrogen, hydrogen sulfide, monomethylamine, dimethylamine, trimethylamine, benzene, phosgene, hydrogen iodide, hydrogen bromide, hydrogen chloride, hydrogen fluoride, mustard gas, algin, monosilane, disilane, diborane, hydrogen selenide, Germane and other gases present in the air in a quantity that is toxic to the human body and which is toxic to the human body and is acceptable (the gas is exposed to mature rats for one hour in the air for at least 1/2 of the rats within 14 days Refers to the concentration of gas to be killed) is less than 5,000,000,000. "

Therefore, the toxic gas includes the specific high-pressure gas and the special high-pressure gas, and 40 kinds of target substances are shown in Table 1 below.

[Table 1]

                          <Toxic gas substance>

In the present invention, it is aimed to establish a safety technology that minimizes accident damage by calculating the risk of high-pressure toxic gas facilities against corrosion which is one of the main causes of such toxic gas accidents. For this, the present invention firstly selected API-581, a risk-based inspection (RBI) procedure developed by the American Petroleum Institute (API), and examined the applicability of the accident result analysis method in a high pressure toxic gas facility.

In API-581, accident result analysis is used to set the relative priorities of tests on facilities based on risk and adopts a simplified method using the proposed formula for representative materials. That is, in API-581, the magnitude of damage resulting from accidental leakage of hazardous materials is calculated through a total of 8 steps (Step 1 ~ Step 8). Therefore, the applicability of the high-pressure toxic gas facility to each step (Step 1 to Step 8) of API-581 is examined as follows, and based on this, the corrosion risk assessment method (accident result analysis method) .

Step 1: Determine representative materials

Since API-581 is mainly a hydrocarbon-based material, and fluids in chemical facilities are not nearly pure substances, representative materials are determined and evaluated. It also provides a list of substances that model representative substances for the substance of interest.

However, in the case of high-pressure toxic gas facilities, 40 kinds of toxic gases are applied as shown in [Table 1], and API-581 can not be applied because most of them are not on the list of substances modeled in API-581 . Therefore, the substance treated in the high-pressure toxic gas facility is applied as a single toxic gaseous substance, and even if it exists as a mixed substance in the process, the toxic gas substance itself is determined as a representative substance because the substance of interest is toxic gas.

Table 2 shows the contents of API-581 related to Step 1 and the applicability of the high-pressure toxic gas facility to it.

[Table 2]

     <Content of API-581 related to Step 1 and examination of applicability of high pressure toxic gas facility>

Step 2: Leak ball  Select size

In practice, when performing a risk assessment (calculation), one leakage hole size should be selected. In other words, the API-581 limits the size of the leak hole, since it is impractical to calculate the risk for multiple leaks.

In API-581, the size of the leak hole is largely set to four (1/4-inch, 1-inch, 4-inch, and rupture) and the size of the leak hole is selected for piping, pressure vessel, pump, compressor, . Since this is not a reflection of the characteristics of each substance and it is an object of facility, it is considered that API-581 can be applied to the selection of leakage hole size in a high pressure toxic gas facility.

The contents of API-581 related to Step 2 and the applicability of high-pressure toxic gas facility to it are shown in [Table 3].

[Table 3]

     <Content of API-581 related to Step 2 and examination of applicability of high pressure toxic gas facility>

Step 3: Calculate Leakage

The total leakage in API-581 is calculated as the smallest of the two leaks calculated by the method in Table 4 below. At this time, it is considered that the inventory group concept is applicable to the high-pressure toxic gas facility, but the two total leak amount settings are not suitable to be applied because the total model mass, etc., . Therefore, in Step 3, it is preferable to use only the concept of Inventory Group.

Table 4 below shows the contents of API-581 related to Step 3 and the applicability of the high-pressure toxic gas facility to it.

[Table 4]

     <Content of API-581 related to Step 3 and examination of applicability of high pressure toxic gas facility>

Step 4: Calculate leak rate

The rate of release depends on the physical properties of the material, the initial phase and the process conditions. Therefore, in API-581, the leak rate calculation formula is selected based on the phase of the material when the material is in the facility, and the type of leak (subsonic or subsonic) of the material is selected as the material leaks. Since this is a commonly applied leak rate calculation formula, it is also applicable to high pressure toxic gas facilities. However, since the subject of the present invention is a high-pressure toxic gas, the equation relating to the liquid is excluded.

Table 5 below shows the contents of API-581 related to Step 4 and the applicability of the high-pressure toxic gas facility to it.

[Table 5]

     <Content of API-581 related to Step 4 and examination of applicability of high pressure toxic gas facility>

Step 5: Determine the leak type

Prediction of damage size, which is an accident result of API-581, models all leaks as one of two types (instantaneous leakage, continuous leakage). At this time, the classification of type of leakage to the case other than the Table 6 all slow leakage rate of a leak, or the ball of 1/4 inch, less than 3 minutes, the total amount of leakage during the 10,000 lb _m as shown in the model as a continuous leak, and Is modeled as instantaneous leakage. Threshold of 10,000 lb _m presented here is that if the leak within as a result of reviewing previous data on fires and explosions, a short time more than 10,000 lb _m are more easily generated increased energy explosion, 10,000 lb _m or less short time , It tends to generate flash fire rather than explosion explosion.

Therefore 10,000 lb _m that is the basis for the API-581 is determined to be in the bunch to apply to the high-pressure gas toxicity. Thus, it is desirable to determine the type of leakage based on the duration of the leak. For example, based on a CCPS (Center for Chemical Process Safety), a leak duration of 10 minutes can be determined.

Table 6 below shows the contents of API-581 related to Step 5 and the applicability of the high-pressure toxic gas facility to it.

[Table 6]

     <Content of API-581 related to Step 5 and examination of applicability of high-pressure toxic gas facility>

Step 6: Fluid phase  decision

The diffusion characteristics of the fluid after leakage vary greatly depending on the phase (gas or liquid). In other words, if the state changes from normal operating conditions to normal atmospheric conditions, the final state of the fluid is the same as the initial state if there is no change in the phase of the fluid. However, if there is a change in the state of the fluid leaking, it may become difficult to assess the material condition to calculate the magnitude of the accident damage.

Therefore, API-581 uses fluid phase crystallization guidelines as shown in Table 7 below. However, since the final phase of the leaking substance in the high pressure toxic gas facility becomes a meteorological condition, it is considered that liquid phase is not considered.

The contents of API-581 related to Step 6 and the applicability of the high-pressure toxic gas facility to it are shown in Table 7 below.

[Table 7]

     <Content of API-581 related to Step 6 and examination of applicability of high-pressure toxic gas facility>

Step 7: Determine mitigation system rating

Assessing the response impacts on the leaks is the final step in estimating the accident damage size of API-581, where various mitigation systems are applied to increase efficiency in limiting the magnitude of accident damage. At this time, the two main parameters that determine the corresponding impact assessment are the duration of the leak and the reduction of the diffusion of hazardous materials. Leak duration is an important parameter in evaluating toxic damage and environmental damage, but the duration of leakage in flammable materials is not an important parameter because flammable materials rapidly reach normal concentrations. This leakage duration is estimated from the type of leakage detection system and blocking system, and is used as a direct input variable for estimating toxic damage. Also, mitigation systems such as water curtains reduce the diffusion of material to reduce the size of the final accident damage.

All plant facilities have a variety of mitigation systems designed to detect, block, and reduce the consequences of leaking hazardous materials. Thus, API-581 has developed a simplified method to evaluate the effectiveness of various types of mitigation systems, and the classification criteria for detection and blocking systems for toxicity detection and blocking systems are shown in Table 8 below. Since such a detection and blocking system is particularly important in high pressure toxic gas facilities, it is considered desirable to accept the same as presented in API-581.

Table 8 below shows the contents of API-581 related to Step 7 and the applicability of the high-pressure toxic gas facility to it.

[Table 8]

     <Content of API-581 related to Step 7 and examination of applicability of high pressure toxic gas facility>

Step 8: Calculate accident damage area

In API-581, as shown in [Table 9], the calculation formula for accident damage size is presented for each representative type according to four types of leaks. However, in the high-pressure toxic gas facility, the API-581 representative substance concept can not be applied as mentioned above, and the leak type determination is also difficult to apply the API-581 procedure. It can not be applied.

Therefore, it is desirable to apply the dispersion model proposed by CCPS to the extent of accident damage caused by toxic gas leaks to examine the effect of toxic gas, which is an accidental injury, on toxicity.

[Table 9]

     <Content of API-581 related to Step 8 and examination of applicability of high-pressure toxic gas facility>

Based on the results of the applicability studies, it is possible to simplify the accident result analysis method applied to high-pressure toxic gas facilities to six stages compared with API-581.

In the high-pressure toxic gas facility, Step 1 (Determination of representative material), Step 5 (Determination of leakage type), Step 6 (Determination of fluid phase) and Step 8 Step 3 (Leakage Rate Calculation) applies only to the inventory group concept. Step 4 (Leakage Rate Calculation) applies only the gas leakage rate. Step 2 Grade determination) is applied as it is. At this time, Step 5 and Step 8 can be replaced by CCPS (Center for Chemical Process Safety, AIChE) method, which is generally applicable.

Therefore, the present invention is based on the above-mentioned analysis result, in order to evaluate the corrosion risk of the high-pressure toxic gas facility, it is necessary to select the leakage hole size, leak amount calculation and leakage We propose six steps of speed calculation, alternative method of determining leakage type by CCPS method, classifying mitigation system based on API-581, and calculating accident damage area by CCPS as an alternative method. FIG. 6 shows the analysis method (Step 1 to Step 8) of the accident result analysis of the API-581 as described above, and the analysis method of the accident result using the high pressure toxic gas facility of the present invention based thereon.

Specifically, the step of assessing corrosion risk (risk) for a high pressure toxic gas facility comprises the steps of: a) evaluating the likelihood of corrosion; b) evaluating the result of the corrosion accident; And c) numerically calculating the corrosion risk using the results evaluated in the above a) and b), wherein b) evaluating the corrosion accident result includes 6 steps as described above.

Specifically, the step b) evaluating the corrosion accident result is based on the API-581 and the Center for Chemical Process Safety (CCPS) (1) selecting the leakage hole size of the facility, 2) Calculating a leak rate of the gas, 3) calculating a leak rate of the toxic gas, 4) determining a leak type based on the leak duration of the toxic gas, 5) determining the degree of mitigation system, and 6) calculating the accident damage area by applying the dispersion model presented in the CCPS. That is, C (corrosion index result evaluation index) in the above equation is preferably calculated as an arbitrary numerical value through the above-mentioned six steps.

In addition, the step of evaluating the a) possibility of corrosion may be evaluated by the method as described above. That is, F (Corrosion Accident Probability Assessment Index) of the above equation can be evaluated numerically (annual number of times) based on data such as API-571, API-580 and / or API-581 have. The step c) of calculating the risk of corrosion by numerical values may be performed by using the equation (F) (corrosion incidence possibility evaluation index) and C (corrosion incidence result evaluation index) evaluated in a) and b) .

According to the present invention, the accident damage size of the toxic gas facility is calculated by the above accident result analysis procedure and the risk of the toxic gas facility is minimized by analyzing the possibility of the accident caused by corrosion, which is one of the main causes of the toxic gas accident It is expected that it will help establish necessary safety technology.

10: Corrosion Hazard Assessment Tool 20: Corrosion Hazard Assessment Tool
30: Equipment-Hazard Rating Matching Tool 40: Residual Life Assessment Tool
50: portable terminal 51: information recognition unit
52: Transmitting / receiving section 54:
55: alarm part 56: information input part
60: main server

Claims (12)

Corrosion risk assessment tool to assess corrosion risk of equipment;
A corrosion risk rating tool for assessing a corrosion risk rating based on the corrosion risk rating evaluated by the corrosion risk assessment tool;
A facility-hazard class matching tool that catalogs and correlates the corrosion hazard ratings evaluated in the corrosion hazard assessment tool with those installed in the plant;
A remaining life assessment tool for assessing the remaining life of the facility; And
And a main server capable of receiving the corrosion risk level and remaining life of each facility from the facility-hazard level matching tool and the remaining life evaluation tool to confirm corrosion risk level and remaining life of each facility. Management system.
Corrosion risk assessment tool to assess corrosion risk of equipment;
A corrosion risk rating tool for assessing a corrosion risk rating based on the corrosion risk rating evaluated by the corrosion risk assessment tool;
A facility-hazard class matching tool that catalogs and correlates the corrosion hazard ratings evaluated in the corrosion hazard assessment tool with those installed in the plant;
A remaining life assessment tool for assessing the remaining life of the facility;
A recognition tag attached to each facility installed in the workplace and recording recognition information of each facility;
The recognition information of each facility is recognized from the recognition tag attached to each facility at the location where the facility in the workplace is installed and transmitted to the main server and the corrosion risk level and remaining life of each facility received from the main server can be checked in real time A portable terminal; And
And a main server for receiving the corrosion risk level and remaining life of each facility from the facility-risk class matching tool and the remaining life assessment tool, and transmitting the corrosion risk class and remaining life of each facility to the portable terminal Wherein the corrosion risk management system comprises:
3. The method of claim 2,
Wherein the portable terminal provides an alarm when at least one selected from a corrosion severity level and a remaining lifetime received from the main server is at a danger level.
3. The method of claim 2,
The portable terminal includes:
An information recognition unit for recognizing recognition information of each facility from a recognition tag attached to each facility;
A transmitter / receiver for communicating with the main server;
A display unit for displaying a corrosion hazard level and a remaining service life of each facility received from the main server through the transmission / reception unit; And
And an alarm unit for providing an alarm when at least one selected from the corrosion risk level and the remaining life time received from the main server through the transmitter / receiver is at a danger level.
5. The method according to any one of claims 1 to 4,
The corrosion risk assessment tool comprises:
An information input unit for inputting facility information and corrosion rate (mpy) information;
A database unit for storing equipment information and corrosion rate (mpy) information input through the information input unit and converting the equipment information and the corrosion rate information into a database; And
And a numerical operation unit for calculating a corrosion risk degree from the facility information and the corrosion rate (mpy) information stored in the database unit.
5. The method according to any one of claims 1 to 4,
Wherein the residual life assessment tool evaluates the remaining life using the corrosion rate (mpy) of the facility.
5. The method according to any one of claims 1 to 4,
Wherein the real-time corrosion risk management system targets a toxic gas facility.
Use of a real-time corrosion risk management system according to any one of claims 2 to 4,
A facility information transmitting step of bringing the portable terminal into contact with a recognition tag attached to the facility and transmitting the recognition information of the facility to the main server through the portable terminal, And
And a corrosion risk information confirmation step of receiving the corrosion risk level and the remaining life time of the facility from the main server through the portable terminal and confirming the corrosion risk level and the remaining life time of the received facility in the portable terminal A feature of real time corrosion risk management method.
A corrosion risk assessment step for evaluating the corrosion risk of the facility;
A corrosion risk level evaluation step of evaluating a corrosion risk level based on the corrosion risk level evaluated in the corrosion risk assessment step;
A facility-hazard level matching step for matching and listing the corrosion hazard rating evaluated in the corrosion hazard rating evaluation step with the facility installed in the workplace;
A remaining life evaluation step of evaluating a remaining life of the facility;
A facility information transmitting step of bringing the portable terminal into contact with a recognition tag attached to the facility and transmitting the recognition information of the facility to the main server through the portable terminal, And
And a corrosion risk information confirmation step of receiving the corrosion risk level and the remaining life time of the facility from the main server through the portable terminal and confirming the corrosion risk level and the remaining life time of the received facility in the portable terminal A feature of real time corrosion risk management method.
10. The method according to claim 8 or 9,
Wherein the real-time corrosion risk management method is for a toxic gas facility.
11. The method of claim 10,
The corrosion risk assessment step comprises:
Based on the API-581 Risk-Based Inspection (RBI) procedure of the American Petroleum Institute (API)
1) selecting a leakage hole size of the facility;
2) calculating a leakage amount of the toxic gas;
3) calculating the leak rate of the toxic gas;
4) determining the leak type based on the leak duration of the toxic gas;
5) determining a mitigation system rating; And
6) A method for real-time corrosion risk management, comprising the step of calculating an accident damage area by applying a dispersion model proposed by the Center for Chemical Process Safety (CCPS).
11. The method of claim 10,
The corrosion risk assessment step comprises:
a) evaluating the probability of corrosion;
b) evaluating the result of the corrosion accident; And
c) numerically calculating the corrosion risk using the results evaluated in a) and b) above,
B) evaluating the corrosion accident result,
Based on the API-581 Risk-Based Inspection (RBI) procedure of the American Petroleum Institute (API)
1) selecting a leakage hole size of the facility;
2) calculating a leakage amount of the toxic gas;
3) calculating the leak rate of the toxic gas;
4) determining the leak type based on the leak duration of the toxic gas;
5) determining a mitigation system rating; And
6) A method for real-time corrosion risk management, comprising the step of calculating an accident damage area by applying a dispersion model proposed by the Center for Chemical Process Safety (CCPS).

Images