JPH0623663B2 - Emergency treatment support system for plant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an abnormality treatment support system for automatically detecting abnormality in a plant and performing reliable treatment, and particularly to the abnormality treatment system during plant operation. The present invention relates to an emergency treatment device support system that automatically determines an operation abnormality of an emergency primary treatment device that performs a treatment to stop or settle in a safe direction to realize certainty and reliability of the treatment operation.

(Prior Art) In recent years, the operation of a chemical plant has been advanced by the operation monitoring, that is, the shift to the CRT operation centering on the CRT console of the computer in which the distributed instrumentation system has been introduced, and the promotion of labor saving and rationalization. As a result, small-group driving is progressing.

Generally, when an abnormality occurs during the operation of the plant, an emergency primary treatment by the distributed instrumentation system (hereinafter referred to as an emergency treatment) to stop the plant or settle the plant in a safe direction
Is executed. This emergency procedure is a procedure in which the minimum operating end is operated in the safe direction in order to stop or settle the plant safely. On the CRT screen of the packaging system, sometimes 200 controllers are called to check for abnormal operation.

In order to reduce the labor and misjudgment of the operator in such a case, various operations using the conventional knowledge engineering method,
A maintenance support device has been proposed. For example, various signals from the plant are taken in, important alarms are discriminated from them, the cause event is judged based on the logic file, and the operation procedure for the cause event is selected from the procedure file and operated. Provided to the operator (Japanese Patent Laid-Open No. 63-282505), or a thinking process performed by a trained operator when an abnormality occurs in the plant, a situation grasping process, a diagnostic process for extracting and verifying an abnormal cause, And the countermeasure decision processing to be taken against this is divided into three stages, and at each stage the optimum knowledge is converted into a data structure and stored in the memory element of the knowledge base, and the processing result based on that is displayed. (JP-A-63-118)
No. 907). In addition, the abnormal condition of the controlled object is stored as a database in the recording device in the driving support system, the abnormal cause is identified and searched by the abnormal diagnosis unit, simulated by the virtual operation simulation, and the result is displayed by the operation guidance. , A method for reducing an operator's operation burden (Japanese Patent Laid-Open No. 64-7)
4607) is also known.

(Problems to be Solved by the Invention) In the confirmation work of the emergency primary treatment in the CRT operation of the chemical plant described above, it takes a lot of time and effort to call the corresponding controller on the CRT screen.
Especially on the current CRT screen, all the target controllers are displayed regardless of whether the operation is normal or abnormal. Therefore, when the number of controllers becomes huge, it takes a lot of time to confirm them. Moreover, this emergency procedure requires a considerable degree of urgency in its operation, and if mistakes such as misjudgment and operation occur,
In the case of a chemical plant, there is a possibility that the plant may deteriorate, and there is a problem that the burden on the operator is excessive as described above. Especially, in recent years, the frequency of experience of abnormalities of operators has decreased due to improvement of plant maintenance technology and operation technology, and if the operators become younger in the future, it may be due to inexperience or inexperiencedness in dealing with actual abnormalities. Corresponding operation delays may occur, causing a serious accident.

All of the driving support systems based on the knowledge engineering method described above attempt to deal with such a situation, but various process mechanisms based on the process amount input mechanism to the system, knowledge base, and event discrimination judgment mechanism. , It has not been determined whether the various support mechanisms such as the control mechanism for supporting the operation are operating normally, and the processing operation is in the direction of improvement against the abnormality of the plant, that is, the direction of repair. Since there is no automatic confirmation as to whether or not the operation has proceeded to, there was a problem in the reliability and reliability of the actual support operation.

The present invention solves the above-mentioned conventional problems in the operation of confirming the emergency primary treatment of a plant, and only abnormal ones are automatically selected from the target devices such as controllers on behalf of the operator. Without error, and confirming the operation of the emergency treatment device,
It is an object of the present invention to provide an emergency treatment support system which automatically makes appropriateness judgments and displays them easily on a CRT screen.

Another object of the present invention is to use the support system itself in a simulated manner so that training for abnormal situations can be performed in the same situation as in an actual plant, thereby compensating for the lack of experience of immature operators and It is to provide an emergency treatment support system which also serves as a training device capable of acquiring accurate operation in.

(Means for Solving the Problem) According to the present invention, a signal for inputting an emergency treatment device that takes measures to stop or settle the plant in a safe direction in response to an abnormal phenomenon during plant operation is fetched, and the signal is used to make an emergency. An emergency treatment injection determination unit that determines the type of treatment, and an operation rule storage that stores the operation rule in which the operation pattern of the operation end related to the emergency treatment is previously regularized according to the type of the emergency treatment and the process target value at the operation end is stored. Section and the operation rule of the operation end from the operation rule storage unit and the 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 unit and compared. Then, when the first comparison / determination unit that determines the validity of the operation signal output from the emergency treatment device and the first comparison / determination unit determines that the operation signal is valid A second comparison / determination unit that takes in the process value of the operating end, compares the process value with a process target value of the operating end of the operation rule storage unit, and determines the adequacy of the operation of the operating end;
When the operation signal is determined to be abnormal by the data input unit that inputs data to the first and second comparison determination units and the first comparison determination unit, or by the second comparison determination unit There is provided an emergency treatment support system for a plant, which has an alarm output section for issuing an alarm and an alarm to an operator when the process value is judged to be abnormal.

According to one aspect of the present invention, there is provided an emergency treatment support system having a training device having a data generation unit capable of switching operations with the data input device.

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

FIG. 1 is a block configuration 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 performs an emergency treatment to stop or settle the plant 1 in a safe direction when any abnormality occurs during plant operation. . An input signal indicating the input of the emergency treatment device 21 is taken into the central processing unit 22 via the distributed instrumentation system 2, and is further input from the central processing unit 22 to the emergency treatment input determination unit 11. Emergency treatment injection determination unit 1
In No. 1, when the emergency treatment input signal 11a is received, the type of the emergency treatment is determined by the emergency treatment type determination unit 11b according to the type of the signal. This type includes, for example, power supply stop, utility stop such as water and steam, abnormality of rotating equipment such as pump and compressor, or tower,
Factors such as abnormalities in storage tanks, reactors, and other equipment that prevent the plant from operating stably are listed as items.

The data input device 12 includes various plant data such as the process value of the operation end of the emergency treatment device 21, the emergency treatment type signal in the emergency treatment introduction determination unit 11, and each operation end stored in the operation rule storage unit 4 described later. The operation rule of is input. A process target portion of each operation end is preset in the operation rule storage unit 4, and the process target value is also input to the data input device 12. The operation rule storage unit 4 is provided in the recording device of the computer, and the operation pattern of the operation end of the device, for example, the opening / closing of the control valve, etc. related to the emergency procedure is set in advance according to the type of the emergency procedure. .

The first comparison / determination unit 13 uses the operation rule L captured via the data input device 12 and the data input device 12 similarly.
Comparison unit 13a for comparing the operation output of the emergency treatment device 21 taken in through the output, and the output normal / abnormality determination unit for determining whether the operation output of the emergency treatment device 21 is appropriate in accordance with the operation rule. 13b. When the first comparison / determination unit 13 determines that the operation output of the emergency treatment device 21 is normal and is output according to the operation rule, the second comparison / determination unit 14 receives the normality determination signal and processes the plant. A comparison unit 14a for comparing the value PV (for example, liquid amount, pressure, temperature, liquid surface, etc.) with the process target value SV of the corresponding operation end set in the operation rule storage unit 4, and the process value PV is the process The operation normality / abnormality determination unit 14b is provided for determining whether or not the target value SV is approached, that is, the validity of the actual operation of the corresponding operation end. Each normality / abnormality determination unit 13b, 14b of the first and second comparison determination units 13, 14
The abnormality determination signal in (1) is output to the alarm output unit 15, and the operator is notified of the abnormality via the man-machine unit 16 and the CRT device 18 according to the type of abnormality.

The abnormality result output 5 from the first and second comparison / determination units 13 and 14 is output to the screen data area of the man-machine unit 16 and displayed on the CRT device 18. Man-machine part 1
In 6, the whole plant is divided into several blocks using the data in the data area, each block is arranged along the flow of the actual plant, and the blocks in which an abnormality has occurred are displayed in blocks that are easy to understand, for example by changing colors. There are a screen and a detailed screen for extracting only the abnormal operating end from the results of the first and second comparison / determination units 13 and 14 and displaying the data and the like. The operation of the CRT device 18 is mainly a touch operation, which is excellent in operability and responsiveness, and is devised to avoid an operation error.

FIG. 2 is a flow chart showing the flow of operation in the above-described embodiment of the present invention. The operation sequence of the present system will be described with reference to this figure. First, an input signal indicating the input of the emergency treatment device is taken into the central processing unit from the distributed instrumentation system at a predetermined cycle (step 111),
If an emergency procedure is input, the type of emergency procedure is determined by the emergency procedure input determination unit 11 according to the signal type (step 112). When the type of the emergency procedure is determined by the emergency procedure input determination unit 11, the operation rule of the operation station corresponding thereto is fetched (step 121), and at the same time, the operation output of the relevant operation station and the process value PV from the data input device 12.
Is taken in (step 122). Next, in the first comparison / determination unit 13, the operation rule fetched from the data input device 12 is compared with the operation output of the emergency treatment device (step 131). If there is an abnormality (the operation output of the emergency treatment device operates). If not output according to the rules), alarm output unit 1
If there is no abnormality in 5 (when the operation output of the emergency treatment device is output according to the operation rule), the process proceeds to the second comparison / determination unit 14. In the second comparison / determination unit 14, the process value PV of the operating end determined to be normal in the first comparison / determination unit 13
Is approaching the process target value SV, that is, the validity of the operation of the operating end is judged (step 141),
If it is abnormal (if the process value is not close to the process target value), it is sent to the alarm output unit 15 (step 15).
1) If it is normal (when the process value is close to the process target value), the process is ended. Alarm output unit 15
Then, in response to the results of the first and second comparison / determination units 13 and 14, a truly necessary alarm is selected and output from the importance of the report to the operator according to the type of abnormality. The operator is a CRT device 18
Depending on the abnormal result displayed on the screen, the appropriate measures are taken at the plant site, for example. Then, after a lapse of a predetermined time, the process data is captured again (step 12
2) The loop of the first and second comparison / determination units 13 and 14 is repeated until no abnormal result is 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 assistance simulator 20 is similar to the emergency treatment assistance system shown in FIG. 1, and the training device 17 has an abnormal pattern setting unit 17a and a data generation unit 17b. Training equipment 17
Is provided as an offline function on the computer so that it can be operated separately from the actual plant. The data generation unit 17b of the training device 17 is, for example, a CR.
A switch operation from the T device 18 switches to the data input device 12 of the emergency treatment assistance simulation device 20. During the training operation, the operation mode of the support simulator 20 is switched from online to offline,
Abnormality data 17c that assumes an abnormal time is generated according to the abnormality occurrence pattern preset by the instructor, and a situation similar to the actual situation is created. The data generation unit 17b supplies data to the first and second comparison / determination units 13 and 14 similarly to the data input device 12 of the support simulation device 20, and the processing described in FIG. 1 is performed. By training the treatment, judgment, and operation according to the processing result, the operator can acquire quick and reliable treatment without any anxiety even when an abnormality actually occurs. The flow of system operation during training is shown in FIG.

(Effects of the Invention) According to the present invention as described above, during emergency treatment of a plant, abnormality of not only the plant but also the emergency treatment itself is automatically detected, and further abnormality of the emergency treatment operation is detected. Since an alarm is issued and abnormal points in emergency response are extracted and displayed on the CRT screen, it is possible to prevent operator misjudgment, erroneous operation and unrecognized abnormal operation. It is possible to prevent the deterioration of the plant due to factors such as the above. Furthermore, according to the present invention, a training function is added in view of the low frequency of emergency measures during normal plant operation, so that the operator can be trained under the same conditions as in an actual abnormal condition. It is possible to prevent erroneous operation and the like due to inexperience in actual driving.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an emergency treatment support system for a plant according to an embodiment of the present invention, FIG. 2 is a flow chart showing an operation flow of the embodiment shown in FIG. 1, and FIG. It is a block diagram of the emergency treatment support system with a training function by the Example of this. 1 ... Plant, 2 ... Distributed instrumentation system, 4 ... Operation rule storage unit, 11 ... Emergency treatment injection determination unit, 12 ... Data input device, 13 ... First comparison determination unit, 14 ... ... second comparison / determination unit, 15 ... Alarm output unit, 16 ... Man-machine unit, 17 ... Training device, 18 ... CRT device, 20 ... Emergency treatment support simulation device, 21 ... Emergency treatment device.

Claims (1)

[Claims] Claims: 1. An emergency treatment introduction determination for taking in a closing signal of an emergency treatment device for taking measures to stop or settle the plant in a safe direction in response to an abnormal phenomenon during plant operation, and to judge the type of emergency treatment based on the signal. Section, an operation rule accommodating section accommodating the operation rule in which the operation pattern of the operation end related to the emergency operation is regulated in advance according to the type of the emergency operation and the process target value at the operation end, and the emergency operation injection determining section. The operation rule of the operation end and the operation signal from the emergency treatment device to the operation end are fetched and compared from the operation rule storage unit according to the determined type of emergency treatment, and output from the emergency treatment device. A first comparison / determination unit that determines the validity of the operation signal, and when the first comparison determination unit determines that the operation signal is appropriate, the process value of the operation end is captured. A second comparison / determination unit that compares the process value and a process target value at the operation end of the operation rule storage unit to determine the validity of the operation at the operation end, and the first and second comparison determinations. When the operation signal is determined to be abnormal by the data input unit that inputs data to the unit and the first comparison determination unit, or the process value is determined abnormal by the second comparison determination unit An emergency treatment support system for a plant, characterized by having an alarm output section for issuing an alarm and an alarm to an operator.