JP5034057B2 - Plant operation event tree chart display method and plant operation support device - Google Patents

Description

  The present invention relates to a technology for supporting the operation of a chemical plant or the like, and more particularly to an event tree chart display method and a plant operation support device that support an operation in the event of an abnormality in a plant and assist an operator in improving technology. is there.

  Conventionally, plant operation has been focused on safety, and efforts have been made to ensure process safety. For example, in chemical companies, plant safety evaluation and operator education are performed based on the concept of HAZOP (Hazard and Operability Study) (for example, Non-Patent Document 1, Non-Patent Document 2, Non-Patent Document). 3). However, in today's international competition, advanced plant operation is required in consideration of not only safety but also quality, delivery time, and environmental impact. For that purpose, it is important to analyze and evaluate daily operations (especially troubles such as equipment failures) and make improvements. For advanced plant operation, it is also important to improve operators' skills by reviewing their experiences.

Conventionally, there is a standard operation procedure (hereinafter referred to as SOP) that defines the basic operation of plant operation. In addition, a plant operation support apparatus that displays an operation procedure and an operation state of a plant has been proposed as a screen 200 shown in FIG. 10 instead of the SOP printed on paper (see, for example, Patent Document 1).
As described above, in recent years, the operation of plants has become more sophisticated, and it has become extremely difficult to determine and respond to plant abnormalities. Nevertheless, there is a problem that there are very few companies that have SOPs for work in abnormal situations. Further, the plant operation support device disclosed in Patent Document 1 is also intended for plant operation in a steady state, and is not useful when the plant is abnormal.

  On the other hand, a plant operation support apparatus that can give appropriate information to the operator when an abnormal state of the plant occurs has been proposed (see, for example, Patent Document 2). The plant operation support apparatus disclosed in Patent Document 2 considers plant safety in the same way as HAZOP, and stores a countermeasure for a plant abnormality in the storage device 300 of FIG. 11 as a risk scenario, The determination unit 301 determines whether the plant is normal or abnormal. When the plant is abnormal, the operation support unit 302 takes out a necessary measure for returning the plant to the normal state from the storage device 300 and causes the alarm output unit 303 to display it. It is what I did.

JP 2003-140741 A JP-A-10-340121 Ministry of Health, Labor and Welfare, Safety Division, “Chemical Plant Safety Assessment (Guidelines and Explanation)”, Central Industrial Accident Prevention Association, 2001 Shunsuke Matsuoka, “Design Safety Evaluation of Plants by HAZOPS”, Petroleum Institute, 1990, Vol. 13, no. 6, p. 456-462 Nobuo Takagi, “Chemical Plant Safety Evaluation”, Chemical Engineering, 1992, Vol. 56, no. 10, p. 735-741

As described above, the conventional SOP and the plant operation support device disclosed in Patent Document 1 have a problem that they cannot cope with an abnormal state of the plant.
Further, in the plant operation support device disclosed in Patent Document 2, the cause and treatment measures can be given to the operator according to the abnormal state of the plant, but there is a difference in the quality of work between the skilled person and the unskilled person. There was a problem that it was easy to come out.

  Conventionally, it has been experienced operators who have experienced various problems that have supported the response in the event of an abnormality. Dealing with anomalies is a scene where know-how accumulated through experience plays an important role. Most of the important knowledge in plant operation can be gained through emergency response, which is a typical operation of non-stationary operation. Plant abnormalities include equipment failures and human error, but in the case of chemical plant failures, there are only a few cases in which failure signals are sent directly from equipment, and most of them affect the process state. Appearance shows that an abnormality has occurred in an abnormality alarm for measurement signals such as flow rate, liquid level, and pressure. The operator will investigate the cause by various means and take action.

However, it is rare to find the true cause immediately from an abnormal phenomenon, and in most cases, look for some unusual condition such as recalling a past similar phenomenon or checking for non-steady work such as the latest maintenance. It will be. In addition, decisions on actions to be taken based on the risk assessment of situational progress predicted from grasping the current state of the process are often made with the cooperation and instructions of other experienced operators.
In the conventional SOP, the cause of the abnormal phenomenon of the plant is connected with the measure, and there is no display method to instantly know the cause of the abnormal phenomenon, the abnormal phenomenon, the measure, and the continuity of the effect. Only local information can be given to employees. Therefore, the operator makes a supplementary work between the points with tacit knowledge (experience, principle), and the quality of the work is likely to be different between skilled and unskilled workers.

In addition, the plant operation support apparatus disclosed in Patent Document 2 and the HAZOP method based thereon emphasizes plant safety and considers other viewpoints such as productivity, quality, cost, delivery time, and environment. It does not specify the priority or importance of work on safety, productivity, quality, cost, delivery time, and environment. Therefore, it is necessary for the operator to perform work while judging what is the highest priority according to the situation on the spot, which may lead to a delay or error in judgment.
In addition, the plant operation support device disclosed in Patent Document 2 has a problem that there is no mechanism for passing on operation know-how and it is difficult to use it as a tool for supporting an operator's technical improvement.

  The present invention has been made to solve the above-described problems, and can provide not only appropriate information to the operator depending on the abnormal state of the plant, but also can be used as a tool for assisting the operator in improving the technology. It is an object of the present invention to provide a plant operation event tree chart display method and a plant operation support apparatus that can perform the operation.

The event tree chart display method for plant operation according to the present invention includes a series of processes including a cause of an abnormal phenomenon of a plant, the abnormal phenomenon, a recovery operation applied to the abnormal phenomenon, and an effect when the recovery operation fails. A creation procedure for creating an event tree chart repeatedly and continuously described in accordance with the state transition of the plant according to an input operation of an operator who inputs each item of the event tree chart, and the event stored in the storage device An acquisition procedure for acquiring at least a part of the tree chart according to an input operation of an operator or a state input from a detection means for detecting the state of the plant, and a display procedure for displaying the acquired event tree chart, A computer that operates as a driving support device executes according to a program stored in a storage device, Vent tree chart, safety, productivity, quality, cost, delivery time, abnormal avoid the production management elements of the environment are described for each phase for the purpose of, each phase, according to the priority of the corresponding production control elements In the acquisition procedure described above, for the keyword input by the operator, the event tree chart including the keyword is acquired from the storage device, or the abnormal phenomenon of the plant automatically detected by the detection means The event tree chart corresponding to is acquired from the storage device.

Also , in one configuration example of the plant operation event tree chart display method according to the present invention, the event tree chart includes an automatic detection method and an operator for each of the detection methods of the cause, the abnormal phenomenon, and the influence. The detection method is described separately.
Also, in one configuration example of the plant operation event tree chart display method of the present invention, the description of the recovery operation in the event tree chart includes a recovery operation automatically performed according to the abnormal phenomenon and a recovery performed by an operator. The operation is described separately.
Further, in one configuration example of the plant operation event tree chart display method of the present invention, the event tree chart includes a description of an allowable time from the occurrence of the abnormal phenomenon until the influence appears.
Further, in one configuration example of the event tree chart display method of the plant operation according to the present invention, the description of the influence in the event tree chart includes the state of the plant when the recovery operation fails and the case where the recovery operation fails. It includes a description of the magnitude of the influence .

In addition, the plant operation support apparatus of the present invention performs a series of processes including the cause of the abnormal phenomenon of the plant, the abnormal phenomenon, the recovery operation applied to the abnormal phenomenon, and the effect when the recovery operation fails, the state of the plant. Creation means for creating an event tree chart repeatedly and continuously described in accordance with the transition according to an input operation of an operator who inputs each item of the event tree chart, and a memory for storing the created event tree chart An acquisition unit that acquires at least a part of the event tree chart stored in the storage device according to a state input from an input operation of an operator or a detection unit that detects a state of the plant; Display means for displaying an event tree chart, wherein the event tree chart includes safety, productivity, quality, DOO, delivery, are described for each phase for the purpose of abnormal avoid the production control elements of the environment, each phase is described according to the priority of the corresponding production control element, said acquisition means, operator input The event tree chart including the keyword is acquired from the storage device, or the event tree chart corresponding to the abnormal phenomenon of the plant automatically detected by the detection means is stored from the storage device. It is characterized by acquiring.

  According to the present invention, a series of processes including a cause of an abnormal phenomenon of a plant, an abnormal phenomenon, a recovery operation performed on the abnormal phenomenon, and an influence when the recovery operation fails are repeatedly and continuously performed along with the state transition of the plant. By creating and displaying the described event tree chart, it is possible to realize a plant operation support device that gives an operator a measure according to an abnormal state of the plant, that is, an electronic SOP corresponding to an abnormality. . Further, in the present invention, by describing a series of processes of cause, phenomenon, recovery operation, and influence with continuity, if an event tree chart is viewed, even if it is an unskilled person, High quality work can be performed with little difference. Also, in the present invention, by looking at the event tree chart created by other operators, it is possible to learn the principle of explaining the causal relationship of trouble cases, and to gain experience in driving by re-experiencing the experience of others. can do.

  Further, in the present invention, the event tree chart is described for each phase for the purpose of securing at least one element among a plurality of manufacturing management elements, and each phase is described according to the priority order of the corresponding manufacturing management element. By doing this, operators can work with a clear understanding of the priorities of manufacturing management elements (safety, productivity, quality, cost, delivery time, environment), and work while judging priorities. It is possible to avoid delays and errors in judgments. Further, in the present invention, it is possible to perform a thought training in which the operator is made aware of the priority of manufacturing management elements and the degree of influence on each element is considered.

  Further, in the present invention, for the detection method of each cause, abnormal phenomenon, and influence in the event tree chart, the method of automatically detecting and the method of detecting by the operator are described separately, thereby reducing the burden on the operator. Can be quantified. The plant designer who sees this description can redesign the division of roles between people and systems in detecting causes, phenomena and effects.

  In the present invention, the burden on the operator can be quantified by separately describing the recovery operation automatically performed according to the abnormal phenomenon and the recovery operation performed by the operator in the event tree chart. The plant designer who sees this description can redesign the division of human and system roles in the recovery operation.

  Further, in the present invention, by describing the allowable time from the occurrence of an abnormal phenomenon to the appearance of an effect in the event tree chart, the plant designer who saw this description checks the feasibility of the recovery operation. And can determine whether the recovery operation should be automated.

  Further, in the present invention, by describing the degree of influence when the recovery operation fails in the event tree chart, the operator or the plant designer who sees this description determines the importance of the recovery operation. be able to.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a plant operation support apparatus according to an embodiment of the present invention.
1 includes an input device 2 such as a keyboard, a storage device 3, a display device 4 such as a CRT or a liquid crystal display panel, a control device 5 that controls the entire plant operation support device, a sensor, and the like. It is comprised from the state input device 6 which inputs the state of a plant (not shown) through the input from. The sensor and the state input device 6 constitute detection means for detecting the state of the plant.

  FIG. 2 is a block diagram illustrating a configuration example of the control device 5. The control device 5 creates an event tree chart, which will be described later, in accordance with the operator's input operation or state input from the detection means, and at least a part of the event tree chart stored in the storage device 3 as the operator. Acquisition means 51 which acquires in response to the input operation or state input from the detection means, and output means 52 which causes the display device 4 to display the event tree chart acquired by the acquisition means 51.

  FIG. 3 is a diagram showing the structure of an event tree chart displayed by the plant operation support apparatus 1 of FIG. In FIG. 3, 11 is an abnormal phenomenon, 12 is a method for automatically detecting an abnormal phenomenon, 13 is a time required for detecting 12 abnormal phenomena, 14 is a method for detecting an abnormal phenomenon by an operator, and 15 is 14 abnormalities. Time required for detecting a phenomenon, 16 is a recovery operation automatically performed for an abnormal phenomenon of the plant, 17 is a recovery operation manually performed by an operator, 18 is a time required for 16 or 17 recovery operation, 19 Is the basis of the recovery operation, 20 is the name of the partner of the reporting phase (report, contact, consultation), 21 is the state of the plant when the recovery operation is successful, 22 is a method for confirming the success of the recovery operation, and 24 is the recovery The state of the plant when the operation fails, 26 is the allowable time from the occurrence of an abnormal phenomenon due to the 11 plant states to the next stage (the plant state when the recovery operation fails), and 27 is the recovery operation Failed Effect of the case, 28 is the allowable time from the occurrence of abnormal phenomenon caused by plant state 24 to the next stage.

  The state of the plant changes continuously over time, but the operation of the operator appears discretely when necessary. Therefore, the inventor has devised an event tree chart as shown in FIG. 3 representing plant operation. The event tree chart shows a series of processes such as plant abnormal phenomena, methods for detecting abnormal phenomena, recovery operations to be performed on abnormal phenomena, and states when the recovery operation fails / states when it succeeds. Along with this, it is described repeatedly and continuously. In the event tree chart, a batch of operations corresponding to process state transitions is described in terms of stages. In the example of FIG. 3, 11 stages to 24 plant states are one stage. Each of 11, 12, 14, 16, 17, 21, and 24 is called a block.

  By using the event tree chart as shown in FIG. 3, it is possible to describe the operation of a plurality of processes that proceed in parallel and the relationship between the processes, and to analyze the operation of the system including the failure of the recovery operation. .

  In the example of FIG. 3, only one stage is described, but in an actual event tree chart, a plurality of stages are described in succession. In this case, the plant state (influence) when the recovery operation fails in a certain stage can cause an abnormal phenomenon in the next stage, and can also be an abnormal phenomenon itself. Therefore, when a plurality of stages are described in succession, the block 11 is omitted between the stages as shown in FIG. In this case, the description of the block 24 indicates the cause of the abnormal phenomenon, indicates the abnormal phenomenon, and also indicates the influence when the recovery operation fails.

  In the event tree chart, a recovery operation set in advance between states is added together with the conditions. At this time, it is extremely important to understand which manufacturing control element the recovery operation relates to, including its influence. In particular, when the plant deviates from the normal state, how to detect the state of the plant by what detection means and how to perform the recovery operation is considered as the basis of the plant operation. Further, the operator perceives the time until the plant transitions from the first state to the next state, and it is meaningful to describe this time as an allowable time in the event tree chart. That is, the permissible time becomes a selection criterion for the abnormality detection means, and also a criterion for determining whether the recovery operation should be performed automatically or manually.

  The plant operation group (foreman and responsible operator) operates the input device 2 of the plant operation support apparatus 1 after the occurrence of the plant trouble, and inputs each item of the event tree chart to express the desired plant operation. . The creation means 50 of the control device 5 creates an event tree chart according to the operator's input operation (or state input from the detection means), and stores the created event tree chart in the storage device 3. It is also possible to list all possible abnormalities at the plant design stage and describe an event tree chart for these abnormalities.

  Since the created event tree chart is stored in the storage device 3, when a trouble occurs, the event tree chart corresponding to the trouble can be searched and displayed on the display device 4. As a search method, the operator operates the input device 2 to input a desired keyword, and the acquisition means 51 of the control device 5 acquires an event tree chart including the input keyword from the storage device 3 and displays it. The acquisition unit 51 may automatically search the event tree chart corresponding to the abnormal phenomenon of the plant automatically detected by the detection unit and display the event tree chart on the display unit 4. Also good.

  Next, features of the event tree chart of the present embodiment will be described. The first feature of the event tree chart is that the operation of the operator is described with the transition of the plant state as the axis, which can be regarded as an SOP corresponding to an abnormality, and as shown in FIG. -It is to be able to visually understand the connection between phenomenon-operation-influence (plant state when operation fails). As described above, in the conventional SOP and the plant operation support apparatus, only local information can be given to the operator, and it is easy for a skilled person and an unskilled person to make a difference in work quality.

  On the other hand, according to the event tree chart of the present embodiment, the operator can deepen the understanding of the cause-phenomenon-operation-effect connection, and expects the operator to improve their thought and knowledge level. Can do. Also, according to the notation method of the event tree chart, it is intuitively understood that the operation to be performed changes one after another as the plant state changes. In addition, the event tree chart provides a mechanism that allows you to overlook what causes the phenomenon you are currently facing and what effects are expected in the future.

  The second feature of the event tree chart is that the priority of manufacturing management elements (safety, productivity, quality, cost, delivery date, environment) can be clearly indicated for each stage, and the operator clearly defines the priority. It is to be able to work after understanding. The event tree chart is also a mechanism with the meaning of thought training that makes the operator aware of the priority of manufacturing management elements from grasping the state of the plant and giving a habit of thinking about the degree of influence on each element.

  As shown in FIG. 5, the event tree chart is described for each of the phases PH1 and PH2 for the purpose of securing at least one of safety, productivity, quality, cost, delivery date, and environmental production management elements. Yes. Priorities are set in advance between the phases, and if the manufacturing control element in one phase is successfully avoided, it is possible to move to the next phase. In the example of FIG. 5, the phase PH1 corresponds to safety (S), the phase PH2 corresponds to quality (Q), and in the case of a plant abnormality, the safety is given priority first, This indicates that when the abnormality avoidance can be confirmed (when the recovery operation is successful), the process should move to the phase PH2 for ensuring quality described on the right side.

  The third feature of the event tree chart is that, as shown in FIG. 3, the plant abnormal phenomenon and its detection method are described for each stage, and the recovery operation corresponding to the abnormal phenomenon is described. is there. The plant state detection is shared by the operator and the detection means. In the case of a chemical plant, it is very difficult to directly measure the state of the plant, and the state of the plant is estimated from signals obtained by measuring flow rate, temperature, pressure, and the like. If this estimation is the role of the operator, the estimation method is described at 14 in FIG. On the other hand, the detection method by the detection means is described at 12 in FIG.

  Further, when there is a limit to the time during which the recovery operation can be performed after the occurrence of an abnormal phenomenon (time to the next stage), the allowable time is described in 26 and 28 of FIG. The state of the plant can be evaluated for each production management element by the description for each phase, and it can be determined whether or not the recovery operation should be automated from the degree of the risk and the allowable time. Further, the degree of danger of the plant state expected when the recovery operation is not performed or when the recovery operation fails is described in 27 of FIG. The degree of this risk determines the importance of the recovery operation.

  The fourth feature of the event tree chart is that the division of roles between people and systems can be clearly indicated. As shown in FIG. 3, in the description part of the detection method of the event tree chart, the detection method automatically performed is described in 12 locations, and the detection method performed by the operator is described in 14 locations. In the description part of the recovery operation, the recovery operation that is automatically performed is described in 16 locations, and the recovery operation performed by the operator is described in 17 locations.

  The 12 and 16 locations are blank, and the descriptions at 14 and 17 indicate that all are dependent on the operator. Therefore, the operator's burden can be quantified by counting the places where the operator has to detect and recover the phenomenon, and if the problem is known, the role of people and the system can be redesigned. it can.

  The fifth feature of the event tree chart is that the improvement effect of the plant operation can be quantified. In the event tree chart shown in FIG. 6A, the positions 12 and 16 are blank, and it can be seen that the detection and recovery operation of the abnormal phenomenon depends on the operator. For this reason, it is possible to avoid danger if the operator detects the abnormal phenomenon in time and the recovery operation is in time, but if the recovery operation is delayed due to reasons such as operator reduction, the state of the plant is shifted to the lowest level. There is a possibility that.

  On the other hand, if a detection means for automatically detecting an abnormal phenomenon is installed, and a mechanism for automatically performing a recovery operation for a portion where the allowable time is not sufficient, an event tree chart is shown in FIG. )become that way. In the example of FIG. 6 (B), descriptions are added to the 12 and 16 locations that were blank in FIG. 6 (A), while the 14 and 17 locations are blank and blocks depending on the operator (detection or operation). It can be seen that the number of has decreased from 4 to 0. The improvement effect can be quantified by adding the risk assessment of the process transition state to the quantitative load evaluation of the operator. Conventional improvement activities have been mainly aimed at improving productivity indicators, and there has been little discussion about improving human factors. By incorporating the viewpoint of human factors into the design of plant operation, it is possible to at least reduce the psychological burden and thus to realize a safe plant operation.

  The sixth feature of the event tree chart is that it can describe the experience of an experienced operator when it is abnormal. What an unskilled person wants an experienced operator to teach is an experience at the time of abnormality. In the case of a major accident, a detailed analysis is conducted to investigate the cause, but in the case of a loss below a certain scale that applies to most cases, the details are not reviewed. Therefore, it is in a situation where valuable abnormal experiences are not even tacit knowledge. Therefore, the experienced operator can look back on the experience and organize the way of dealing with the abnormality that should be done by the event tree chart, so that the experience at the time of abnormality can be recorded. The event tree chart is a useful tool not only for unskilled operators but also for skilled operators.

  Next, a specific example of the event tree chart will be described. 7 and 8 are diagrams showing an example of an event tree chart, and FIG. 9 is a block diagram showing a main configuration of the plant corresponding to the event tree charts of FIGS. In FIG. 9, POL is a polymerization tank, ST1 and ST2 are strainers, DRY is a dryer, SHI is a shifter, P1 and P2 are pressure gauges at the outlets of the strainers ST1 and ST2, and F1 is a feed rate of the raw material to the dryer DRY. , Tin is a thermometer at the inlet of the dryer DRY, Tout is a thermometer at the outlet of the dryer DRY, and P3 is a pressure gauge at the outlet of the shifter SHI.

  The plant shown in FIG. 9 shows only the part of the drying process. In this drying step, a compound is generated in the polymerization tank POL, the generated raw material is filtered by one of the strainers ST1 and ST2, and then dried by a dryer DRY, and the dried raw material is sieved by a shifter SHI. It is.

  In such a drying process, the following trouble occurred at 4:26 on one day. First, after the reaction process by the polymerization tank POL was stopped (4:26), the flow rate fluctuation in the flow meter F1 increased immediately after switching to the purge tank feed. For this reason, the strainer ST1 was switched to the strainer ST2, but the strainer ST2 was clogged within 10 minutes, and the temperature at the dryer outlet increased in the thermometer Tout. Next, since the flow rate of the flow meter F1 became 0 while the strainer ST1 was being cleaned, the dryer inlet temperature in the thermometer Tin was manually operated (MAN) at T1 ° C. in order to prevent the dryer outlet temperature from rising. To T2 ° C. As a result of manual operation, the dryer inlet temperature eventually decreased to T3 ° C. (T1> T2> T3). Therefore, shifter over occurred due to wire mesh clogging of the shifter SHI.

  The event tree charts shown in FIGS. 7 and 8 are created based on the troubles described above. FIG. 7 shows a phase PH1 for the purpose of ensuring quality (Q), and FIG. 8 shows productivity (P), cost (C) and delivery date determined as the next order to be transferred when quality is successfully secured. The phase PH2 for the purpose of ensuring (D) is shown. 8 is connected to I in FIG. 7, and II in FIG. 8 is connected to II in FIG.

  First, 11 in FIG. 7 describes that the root cause of the abnormal phenomenon in the drying process is clogging of the strainer. As a result, it is described in 24a that the supply flow rate of the raw material to the dryer DRY decreases, and it is described in 14a that the operator noticed this decrease in flow rate. It is described in 17a that the operator has performed an operation of switching from the strainer ST1 to the strainer ST2 for the cause of the clogging of the strainer ST1. It is described in 21a that if the strainer switching is successful, the process proceeds to phase PH2 in FIG.

  In addition, it is described in 24b of FIG. 7 that the temperature at the dryer outlet rises when switching of the strainer fails, and it is described in 14b that the operator noticed this temperature increase. It is described in 17b that the operator stopped the drying process in response to the temperature rise of the dryer. If this stop is successful, it is described in 21b that the rise in the dryer temperature stops and the process proceeds to phase PH2 in FIG. And it is described in 24c that if the stop of the drying process fails, the quality of the product will be abnormal.

On the other hand, when moving to phase PH2 in FIG. 8, 17d describes that the strainer is cleaned, and 24d describes that if the cleaning fails, the strainer is clogged.
The above is the event tree chart created according to the trouble in the drying process.

  In this way, by creating an event tree chart, it is possible to make SOPs naturally compatible with abnormal situations, and the plant operation support apparatus 1 can be used as a tool that gives the operator measures for the abnormal conditions of the plant. Can do.

  Moreover, according to this Embodiment, the plant operation assistance apparatus 1 can be utilized as a tool which assists an operator's technical improvement. According to the event tree chart, what kind of problem the plant is in now, what kind of problems have occurred in the first place, what kind of process has gone through the current state, recovery operation It is possible to give information that can give an overview of the whole problem of what kind of state will occur when not performing. Therefore, the analysis of trouble cases using the event tree chart is useful for the unskilled person to learn the principle of explaining the causal relationship of trouble cases, and contributes to the improvement of operators' skills.

  In addition, PKY activities that extend the methods used in process risk prediction (PKY) activities that have been implemented for safety awareness training to all manufacturing management elements such as quality, productivity, cost, delivery time, and environment By executing using the tree chart, know-how and techniques related to plant operation can be easily displayed and operation know-how can be compiled.

  In addition, the plant operation assistance apparatus 1 in this Embodiment is realizable with the program which controls these hardware resources and the computer provided with CPU, a memory | storage device, and an interface, for example. A program for operating such a computer is provided in a state of being recorded on a recording medium such as a flexible disk, a CD-ROM, a DVD-ROM, or a memory card. The CPU writes the read program into the storage device, and executes the processing described in this embodiment in accordance with this program.

  The present invention can be applied to a technology that supports operation of a chemical plant or the like and technical improvement of an operator. The present invention can also be applied to operation design.

It is a block diagram which shows the structure of the plant operation assistance apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structural example of the control apparatus in the plant operation assistance apparatus of FIG. It is a figure which shows the structure of the event tree chart displayed with the plant operation assistance apparatus of FIG. It is a figure for demonstrating the 1st characteristic of the event tree chart in embodiment of this invention. It is a figure for demonstrating the 2nd characteristic of the event tree chart in embodiment of this invention. It is a figure for demonstrating the 5th characteristic of the event tree chart in embodiment of this invention. It is a figure which shows one example of an event tree chart. It is a figure which shows one example of an event tree chart. It is a block diagram which shows the principal part structure of the plant corresponding to the event tree chart of FIG. 7, FIG. It is a figure which shows the progress condition screen of the conventional plant operation assistance apparatus. It is a block diagram which shows the structure of the other conventional plant operation assistance apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Plant operation assistance apparatus, 2 ... Input device, 3 ... Memory | storage device, 4 ... Display apparatus, 5 ... Control apparatus, 6 ... Status input device, 50 ... Creation means, 51 ... Acquisition means, 52 ... Output means.

Claims (6)

An event in which a series of processes including the cause of a plant abnormal phenomenon, the abnormal phenomenon, the recovery operation performed on the abnormal phenomenon, and the effect of failure in the recovery operation are described repeatedly and continuously with the state transition of the plant. Creation procedure to create a tree chart according to the input operation of the operator who inputs each item of this event tree chart,
An acquisition procedure for acquiring at least a part of the event tree chart stored in the storage device in response to an input operation of an operator or a state input from a detection unit that detects a state of the plant;
A display procedure for displaying the acquired event tree chart,
A computer operating as a plant operation support device is executed according to a program stored in a storage device,
The event tree chart, safety, productivity, quality, cost, delivery time, are described for each phase for the purpose of abnormal avoid the production control elements of the environment, each phase, the priority of the corresponding production control elements Described according to
For the keyword input by the operator, the acquisition procedure acquires the event tree chart including the keyword from the storage device, or corresponds to a plant abnormal phenomenon automatically detected by the detection means. A method for displaying an event tree chart for plant operation, wherein the event tree chart is obtained from the storage device. In the display method of the event tree chart of the plant operation of Claim 1,
The event tree chart includes a plant operation event tree in which an automatic detection method and an operator detection method are separately described for each of the causes, abnormal phenomena, and influence detection methods. How to display the chart. In the display method of the event tree chart of the plant operation of Claim 1,
The description of the recovery operation in the event tree chart is a plant operation event tree chart characterized in that a recovery operation automatically performed according to the abnormal phenomenon and a recovery operation performed by an operator are described separately. Display method. In the display method of the event tree chart of the plant operation of Claim 1,
The event tree chart includes a description of an allowable time from the occurrence of the abnormal phenomenon to the appearance of the influence, and a plant operation event tree chart display method. In the display method of the event tree chart of the plant operation of Claim 1,
The event description in the event tree chart includes a plant operation event tree when the recovery operation fails and a description of the magnitude of the effect when the recovery operation fails. How to display the chart. An event in which a series of processes including the cause of a plant abnormal phenomenon, the abnormal phenomenon, the recovery operation performed on the abnormal phenomenon, and the effect of failure in the recovery operation are described repeatedly and continuously with the state transition of the plant. Creation means for creating a tree chart according to the input operation of the operator who inputs each item of this event tree chart,
A storage device for storing the created event tree chart;
An acquisition means for acquiring at least a part of the event tree chart stored in the storage device according to an input operation of an operator or a state input from a detection means for detecting a state of the plant;
Display means for displaying the acquired event tree chart,
The event tree chart, safety, productivity, quality, cost, delivery time, are described for each phase for the purpose of abnormal avoid the production control elements of the environment, each phase, the priority of the corresponding production control elements Described according to
The acquisition unit acquires the event tree chart including the keyword from the storage device for the keyword input by the operator, or corresponds to the abnormal phenomenon of the plant automatically detected by the detection unit. The plant operation support apparatus, wherein the event tree chart is obtained from the storage device.

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