JPH04155218A - Supporting system for emergency treatment of plant - Google Patents

Abstract

PURPOSE:To prevent misoperation and failure in recognition to prevent a plant from transferring toward deterioration by automatically detecting a failure not only in the plant but also emergency treatment itself, further detecting a failure in emergency treatment operation to issue a warning and extracting, displaying, etc. abnormal points on a CRT. CONSTITUTION:A signal indicating turn-ON of an emergency treating apparatus 21 is supplied via the apparatus 21, a scattered instrumentation system 2 and a CPU 23, and an emergency treatment turn-ON determining unit 11 determines a type of the emergency treatment while a data input device 12 references an operation rule storage unit 4 to supply operation rules L to a first comparison determination unit 13. When the determination unit 13 automatically detects a failure in operation of the apparatus 21 itself, a warning is issued from a warning output unit 15 to an operator. When the apparatus 21 is normal, validity of an operation end is further determined by a second comparison determination unit 14 similarly, and a warning is issued if a failure is detected. At the same time abnormal points are extracted and displayed on a CRT 18 when the warning is issued, so that misoperation and failure in recognition of the operator can be prevented to prevent the plant from transferring toward deterioration.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is an abnormality handling support system that automatically detects abnormalities in a plant and takes reliable measures. The present invention relates to an emergency treatment device support system that automatically determines abnormal operation of an emergency device that takes measures to stop or stabilize a plant in a safe direction and realizes reliability and reliability of treatment operations.

(Conventional technology) In recent years, the operation of chemical plants has become more sophisticated due to the transition to CRT operation, in other words, the operation monitoring centered on CRT consoles of computers that have introduced distributed instrumentation systems. As a result of this promotion, fewer people are required to operate the vehicle.

Generally, when an abnormality occurs during plant operation.

An emergency procedure (referred to as an emergency procedure) is executed by the distributed instrumentation system to stop the plant or to stabilize the plant in a safe direction. This *emergency device operates the minimum operating end in the safe direction in order to safely stop or stabilize the plant; when creating an emergency device that automatically does this, the operator CR of distributed instrumentation system
T-S: I sometimes control up to 200 points of control instruments on a lean system.
The machine is being pulled out to check for any malfunctions.

In order to reduce the operator's effort and misjudgment in such cases, various operations using knowledge engineering techniques have been proposed.
A maintenance support device has been proposed.

For example, it takes in various signals from the plant, distinguishes important alarms from among the negative alarms, determines the triggering event based on a logic file, and determines the operating procedure for the triggering event from the procedure manual file. (Unexamined Japanese Patent Publication No. Sho El 6)
(No. 3-282505), or the thought process that a skilled operator performs when an abnormality occurs in a plant, including situational understanding processing, extraction and verification of abnormality cause candidates, diagnostic processing, and decision-making and processing of countermeasures to be taken in response. At each stage, the optimal knowledge is converted into a data structure and stored in the memory t element of the knowledge base, and the processing results based on it are displayed (specially Kaisho 63-i 1189
Publication No. 07), etc. In addition, abnormal conditions of the controlled objects are stored as a database in the recording device within the driving support system, and the abnormality diagnosis section identifies and searches for the cause of the abnormality and simulates it using simulation for virtual operation. A method for displaying results and reducing the operator's operational burden (
JP-A-64-74607) is also known.

(Problem a) the invention aims to solve
In the above-mentioned work of confirming emergency and next measures in the CRT operation of a chemical plant, it takes a lot of time and effort to call up the corresponding controller on the CRT screen.

In particular, the current CRT screen displays all the target adjustment hands regardless of whether their operation is normal or abnormal, so when the number of controllers becomes enormous, it takes a lot of time to check them. Moreover, this emergency measure requires a great deal of urgency to operate, and if a mistake such as a misjudgment or incorrect operation occurs, in the case of a chemical plant, there is a risk that the plant will deteriorate, and as mentioned above, the operator's There was a problem that the burden was excessive. In particular, in recent years, improvements in plant maintenance technology and operation technology have led to a decrease in the frequency of operators experiencing abnormalities, and as operators continue to become younger in the future, they may be inexperienced or inexperienced in responding to actual abnormalities. This may cause a delay in response operations due to the accident, which could lead to a major accident.

The driving support system based on the knowledge engineering method described above is
All of them attempt to deal with this situation, but they include mechanisms for inputting process amounts into the system and various processing mechanisms based on knowledge bases.

It is not determined whether the various support mechanisms for operation support such as event identification and judgment mechanisms and control mechanisms are operating normally, and furthermore, the processing operations are not moving towards improvement in response to plant abnormalities. In other words, since there was no automatic confirmation of whether or not progress was being made in the direction of repair, there was a problem with the reliability and credibility of the actual support operations.

The present invention solves the above-mentioned conventional problems in confirming emergency and next actions in plants, and automatically detects abnormalities from target equipment such as controllers instead of operators. Extract only without error, check the operation of emergency treatment equipment,
An object of the present invention is to provide a 9M emergency treatment support system that automatically judges validity and displays it on a CRT screen in an easy-to-understand manner.

Another object of the present invention is to make it possible to use the support system itself in a simulated manner to conduct emergency response training under the same conditions as in an actual plant, thereby compensating for the lack of experience of unskilled operators and The object of the present invention is to provide an emergency treatment support system that also serves as a training device to help people learn accurate operations.

(Means for Solving !IB) According to the present invention, the activation signal of an emergency treatment device that takes measures to stop or stabilize the plant in a safe direction in response to an abnormal phenomenon during plant operation is captured, and the signal is used to an emergency treatment input determination unit that determines the type of emergency treatment; an operation rule that preregulates the operation pattern of the operating end related to the type of emergency treatment; and an operation rule that stores a process target value for the operating end. and an operation rule for the operation end from the operation rule storage section and an operation signal from the emergency treatment device to the operation end according to the type of emergency treatment determined by the emergency treatment input determination section. a first comparison/judgment unit that compares and determines the validity of the operation signal output from the emergency treatment device; and a process of the operation end when the first comparison/judgment unit determines that the operation signal is appropriate. a second comparison/judgment unit that takes in a value, compares the process value with a process target value at the operating end of the operation rule storage unit, and determines the validity of the operation of the operating end;
Said 1st. When the operation signal is determined to be abnormal by a data input section that inputs data to a second comparison and determination section and the first comparison and determination section, or when the second comparison and determination section determines that the process value is An emergency treatment support system for a plant is provided, which includes an alarm output unit that notifies an operator of the abnormality and an alarm when it is determined that there is an abnormality.

According to one aspect of the present invention, there is provided an emergency treatment support system that includes the data input device and a training device having a data generation section whose operation can be switched.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a plant emergency treatment support system according to an embodiment of the present invention. An emergency treatment device 21 is attached to each chemical plant 1, and the treatment device 21 takes emergency measures to stop or stabilize the plant 1 in a safe direction when some abnormality occurs during plant operation. . An input signal indicating activation of the emergency treatment device 21 is taken into the central processing unit 22 via the distributed instrumentation system 2, and further inputted from the central processing unit 22 to the emergency treatment input determination unit 11. Emergency treatment decision unit 1
1, when this emergency treatment injection signal 11a is received, the type of emergency treatment 1g is determined in the SI emergency treatment type determining section 11b based on the type of the signal. This type includes, for example, a power outage, a stoppage of utilities such as water or steam, an abnormality in rotating equipment such as a pump or compressor, or an abnormality in equipment such as a tower, storage tank 1 reactor, etc. Items include factors that prevent you from being able to drive.

The data input device 12 contains various plant data such as process values of the operating end of the emergency treatment device 21. An emergency treatment type signal in the emergency treatment input determination section 11 and operation rules for each operating end stored in an operation rule storage section 4, which will be described later, are input. Note that process target values for each operating end are preset in the operation rule storage section 4, and these process target values are also input to the data input device 12. The operation rule storage section 4 is provided in the recording device of the computer, and operation patterns such as opening and closing of operating terminals of related equipment, such as control valves, etc., are regularized and preset according to the type of emergency treatment mentioned above. .

The first comparison/judgment unit 13 uses the operation rules imported via the data input device 12 and the data input device 12 as well.
a comparison unit 13a that compares the operation output of the emergency treatment device 21 taken in via the operation rule, and an output normal/abnormality determination unit that determines whether the operation output of the emergency treatment device 21 is appropriate in accordance with the operation rule. 13b. When the first comparison and determination unit 13 determines that the operation output of the emergency treatment device 21 is normal and is output according to the operation rules, the second comparison and determination unit 14 receives the normality determination signal and controls the plant. Process values PV (e.g. liquid volume, pressure, temperature).

a comparison unit 14a that compares the liquid level, etc.) with the process target value S■ of the corresponding operating end set in the operation rule storage unit 4;
and an operation normality/abnormality determination section 14b that determines whether the process 41PV approaches the process target value S■, that is, the validity of the actual operation of the corresponding operating terminal. 1st. The abnormality determination signal in each normality/abnormality determination section 1314b of the second comparison determination section 13.14 is transmitted to the alarm output section 15.
It is output and sent to the man-machine section 16. The operator is notified of the abnormality via the CRT device 18' according to the type of abnormality. The difference 1 result output 5 of the second comparison/judgment section 13.14 is output to the data area for the screen of the man-machine section 16 and displayed on the CRT device 18. Divide the entire plant into four blocks, and divide each block into an actual plant (
The block table 5 screen is arranged along the flow and the color of a block with an abnormality is changed to make it easier to understand.
．． There is a detailed screen that extracts only abnormal operation ends from the stings of the second comparison/judgment section 13, 14 and displays the data side thereof. The 18σ CRT device is mainly operated using a tough operation, which has excellent operability and responsiveness, and is designed to avoid operational errors.

FIG. 2 shows the operating ratio in the above-described embodiment of the present invention.
FIG. This figure is b.
If you refer to it and explain the operating order of this system,
First, an input signal indicating input of the emergency treatment device is sent from the distributed instrumentation system to the central processing unit in a predetermined manner. (step 111), and if it is an emergency.
When treatment 1 is activated, the type of emergency treatment is determined by the emergency treatment input determination unit 11 based on the signal type (step 112), and the emergency treatment type is determined by the emergency treatment input determination unit 11 (step 112). Then, the operation rule of the operating end corresponding to this is imported (step 121),
) At the same time, the first operation output and the process value Pv of the corresponding operation end are taken in from the data input device 12 (step 122), and then the first comparison/judgment section 13 inputs the data i.
- Compare the operating rules taken in from the data input device 12 and the operation output of the emergency treatment device)
131), if there is an abnormality (if the operation output of the emergency treatment device is not output according to the operating rules), an alarm will be issued.
If there is no abnormality in the report output unit 15 (if the operation output of the emergency treatment device is output according to the operating rules), the process moves to the second comparison/judgment unit 14. The second comparison/determination unit 14 determines whether the process value PV of the operating end determined to be normal by the first comparison/judgment unit 13 approaches the process target flsV, that is, the validity of the operation of the operating end. Step 141) If abnormal (if the process value is not close to the process target value), send to the alarm output unit 15 (step 151); if normal (if the process value is close to the process target value) , ends the process. In the alarm output section 15, the first. In response to the results of the second comparison/judgment section 13.14, a truly necessary alarm is selected and output based on the importance of reporting to the operator according to the type of abnormality. In response to the abnormality result displayed on the screen of the CRT device 18, the operator takes appropriate action 1, for example at the site of the plant6.Then, after a predetermined period of time has elapsed, the operator takes in the process data again (step 122) and ．． The loop of the second comparison/judgment section 13, 14 is repeated until no abnormal results are obtained.

FIG. 3 is a block diagram of an emergency treatment support system including a training device according to another embodiment of the present invention. In this embodiment, the emergency treatment support simulation device 20 is similar to the emergency treatment support system shown in FIG.
and a data generating section 17b. The training device 17 is provided as an off-line function on the summer planner and can be operated separately from the actual plant.

The data generation unit 17b of the training device 17 can be switched to the data input device 12 of the emergency treatment support simulation device 20 by operating a switch from the CRT device 18, for example. During the training operation, the operation mode of the support simulation device 20 is switched from online to offline, and abnormality data 17c is generated based on the abnormality occurrence pattern set in advance by the instructor, thereby creating a situation similar to the actual situation. . The data generating section 17b is connected to the first
．． The data is supplied to the second comparison/judgment section 13.14, and the first
The processing explained in the figure is performed.

By training operators to make judgments and actions based on processing results, they can learn how to deal with problems quickly and reliably even when an abnormality actually occurs. The flow of system operation during training is shown in FIG. 2 with dashed lines.

(Effects of the Invention) As explained above, according to the present invention, during emergency treatment of a plant, abnormalities not only in the plant but also in the emergency treatment itself are automatically detected, and abnormalities in the emergency treatment operation are also detected. Since an alarm is issued and abnormal points for emergency response are identified and displayed on the CRT screen, it is possible to prevent the operator from misjudging, erroneous operation, or failing to recognize an abnormal operation, or from forgetting to perform an operation.

It is possible to prevent Plan 1 from worsening due to forgetting to check. Furthermore, according to the present invention, in view of the fact that emergency measures are not activated frequently during normal plant operation, a training function is added, making it possible to train operators under the same conditions as when an actual abnormality occurs. Therefore, it is possible to prevent the occurrence of erroneous operations due to inexperience during actual driving.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a plant emergency treatment support system according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation flow of the embodiment shown in FIG. FIG. 1 is a block diagram of an emergency treatment support system with a training function according to an embodiment. 1...Plant, 2...Distributed instrumentation system, 4.
...Operation rule storage unit, 11...Emergency treatment input judgment unit, 12...Data input device, 13...First comparison and judgment unit, 14...Second comparison and judgment unit, 15...・Alarm output section,
16...Man-machine department, 17...Training device, 18...CRT device, 20...Emergency treatment support simulation device, 21...Emergency treatment device. Agent Patent Attorney Toshiyoshi Somekawa

Claims (1)

[Claims] an emergency treatment input determination unit that receives a signal for inputting an emergency treatment device that takes measures to stop or stabilize the plant in a safe direction in response to an abnormal phenomenon during plant operation, and determines the type of emergency treatment based on the signal; an operation rule storage section that stores operation rules in which the operation pattern of the operation end related to the treatment type is regulated in advance and a process target value for the operation end; and an emergency treatment determined by the emergency treatment input determination section. The operation rule of the operation end from the operation rule storage section and the operation signal from the emergency treatment device to the operation end are fetched and compared according to the type of the operation rule, and the validity of the operation signal output from the emergency treatment device is determined. The first step is to judge
and when the first comparison and determination section determines that the operation signal is appropriate, the process value of the operation end is taken in, and the process value and the process target value at the operation end of the operation rule storage section are stored. a second comparison/judgment unit that compares the operation end with the operating end and determines the validity of the operation of the operating end; a data input unit that inputs data to the first and second comparison/judgment units; an alarm output unit that notifies an operator of the abnormality and a warning when the operation signal is determined to be abnormal by the comparison and determination unit or when the process value is determined to be abnormal by the second comparison and determination unit; A plant emergency treatment support system comprising: