JPH0772834A - Device for guiding operational procedure - Google Patents

Abstract

PURPOSE:To provide a device for guiding operational procedure diagnosing a plant condition from plant information and performing proper selection and display from the operational procedure made a data base. CONSTITUTION:This device is constituted of a plant condition diagnostic means 4 diagnosing the plant condition by the plant information and a diagnostic rule storage means 3, an operational procedure identification means 5 identifying the operational procedure, a parallel operation priority decision means 6 deciding the priority of the operational procedure, a procedure guide selection means 8 selecting a procedure guide from a procedure guide storage means 7 by operational procedure identification information, a flow chart selection means 10 selecting a flow chart from a flow chart storage means 9, a parameter selection means 12 selecting a parameter from a display parameter combination storage means 11, a display means 13 separating and displaying the condition of the past and the present from respective information of the plant condition, the procedure guide, the flow chart and the parameter and a manual input means 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation procedure guide in a plant, and in particular, an operation procedure manual is expressed on a computer to automatically execute a plant state diagnosis and a necessary operation procedure on-line. The present invention relates to a driving procedure guide device displayed as operator support.

[0002]

2. Description of the Related Art Conventionally, since a monitoring and operating system for a large plant such as a nuclear power plant or a steel mill is large and complicated, centralization has been promoted. Along with this, the work range of operators has become wider, resulting in an increase in work volume and responsibility. On the other hand, with the progress of hardware, it has been attempted to apply a computer to a monitoring system to a large extent using a CRT as an output terminal.

For this reason, there is a demand for consistency between the monitoring operation system and humans. Especially in a nuclear power plant, the tendency has been strong since the TMI-2 accident which occurred in 1979. In consideration of human factors, the development of man-machine interface from the viewpoint of operator is underway.

As a result, ergonomic consideration is given to the conventional shape, size, layout of equipment, etc., and the physical and mental burden on the operator is reduced. Regarding the operation of the nuclear power plant, manuals are prepared both in normal times and in accidents, and operator training is conducted by simulator training. In addition, this operation manual is prepared as an operation procedure manual for operations during abnormalities and accidents, as well as during startup and shutdown.

Of these operating procedures, generally, the operations at the time of starting and stopping can be performed according to the operating procedure manual, and the plant state can be easily grasped. In addition, the operation contents are sufficiently familiar, and can be easily performed while turning over the operation procedure manual. However, in the case of abnormalities and accidents, it is not possible to predict the development of these accidents in advance, so the plant status is always known, and if necessary, the operation procedure corresponding to this can be searched from the operating procedure manual. Then, it is necessary to put it into practice.

Note that some operating procedure manuals show the flow of operations in a flow chart and a procedure guide. In the operating procedure manual having such a structure, the operator can accurately grasp the progress of the event. , Need to trace the flow chart. Especially, in the expression of the flowchart, when it is described that a plurality of driving operations are performed in parallel, in order to determine the driving operation to be prioritized, carefully read the driving procedure manual,
It is necessary to clearly understand the purpose of the operation and the parameter limit values.

Some grounds for the driving operation described in the procedure guide are obtained from the result of the accident analysis, and these explanations are given at the back as an attachment to the driving procedure manual. In some cases. Therefore, in such an operating procedure manual, it is always necessary to turn over and check the pages before and after.

[0008]

It is necessary to simplify the use of a driving procedure manual for an accident in order to more accurately carry out a response in the event of an abnormality and an accident. What is to be done is to grasp the plant state and determine where in the operating procedure the state corresponds.

However, this work becomes a mental burden in a tense state such as an accident and is apt to cause a misjudgment. Furthermore, it is required for the operator to trace the operating procedure in order to accurately grasp the progress of the event and perform the operation according to the state of the plant. When a plurality of driving operations are introduced as this work, it is also required to immediately determine which operation is to be preferentially performed.

Furthermore, in the operating procedure manual for an accident,
Some instructions dictate the required operation in combination with safety-critical parameters and various limit values.In addition, it is necessary to judge the signs of plant parameters at the same time, The situation of using the operating procedure is quite tense even in the event of an accident.

However, even in such a situation, since it is necessary to more reliably carry out the operation based on the operating procedure manual, the operator is required to have high technical knowledge and abundant experience, which is a heavy burden, and It was essential to secure personnel to ensure the reliability and safety of plant operation.

It is an object of the present invention to provide an operating procedure guide device for diagnosing a plant state from plant information and automatically performing appropriate selection and display from operating procedures stored in a database.

[0013]

In order to achieve the above object, an operation procedure guide device according to the present invention is a plant state diagnosing means for diagnosing a plant state according to a rule stored in a diagnostic rule storing means while inputting plant information. And operating procedure identifying means for identifying which part of the operating procedure in the database corresponds to this diagnostic result, and parallel operation priority order determining means for determining priority when there are a plurality of identified operating procedures. .

Further, the procedure guide selecting means for inputting the identification information of the driving procedure from the driving procedure identifying means and selecting the procedure guide from the procedure guide storing means, the flowchart selecting means for selecting the flowchart from the flowchart storing means, and the display. By inputting information from the parameter selecting means for selecting a parameter from the parameter combination storing means, the plant state diagnosing means, the procedure guide selecting means, the flow chart selecting means, and the parameter selecting means, the past and present states can be color-coded or the like. It is characterized by comprising display means for distinguishably displaying and manual input means provided in this display means.

[0015]

In the present invention, the plant state diagnosis means automatically diagnoses the plant state in accordance with the inputted plant information and the rule stored in the diagnosis rule storage means, and the operation procedure at this time is the operation procedure from the diagnosis result. The identifying means and the parallel operation priority order determining means identify which part of the operating procedure stored in the database corresponds, and determine the priority when there are a plurality of identified operating procedures.

Further, by inputting the identification information of the operating procedure, the procedure guide storing means and the procedure guide selecting means show the procedure guide, the flowchart storing means and the flowchart selecting means show the flowchart, and the display parameter combination storing means and the parameter selecting means. The parameters are selected by the means.

The display means inputs and displays the plant state diagnosis, the procedure guide, the flow chart, and the parameter information, and displays the past and present states in different colors or the like. Further, the operator issues various commands by dialogue on the front surface of the display means with the manual input means.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. As shown in the block configuration diagram of FIG. 1, the operation procedure guide device 1 inputs plant information, and a plant state diagnosis means 4 for diagnosing a plant state according to a rule stored in a diagnosis rule storage means 3. The operation procedure identification means 5 for inputting the diagnosis result of the plant state diagnosis means 4 and identifying which part of the operation procedure manual stored in the database corresponds to the input diagnosis result.
Further, the parallel operation priority order determining means 6 is provided to determine which operation is to be prioritized when there are a plurality of operating procedures identified at this time.

Information for identifying the driving procedure from the driving procedure identifying means 5 is input, and the procedure guide storing means 7 is entered.
A procedure guide selecting means 8 for selecting a procedure guide from, a flowchart selecting means 10 for selecting a flowchart from the flowchart storing means 9, and a parameter selecting means 12 for selecting a parameter from the display parameter combination storing means 11.

Further, information from the plant state diagnosing means 4, the procedure guide selecting means 8, the flow chart selecting means 10 and the parameter selecting means 12 is input to display the past and present states, for example, by color coding or by distinguishing by flicker. A display means 13 composed of a CRT or the like is provided, and a manual input means 14 for dialogue for issuing a command from an operator to the plant state diagnosis means 4 and the operation procedure identification means 5 is mounted on the front surface of the display means 13. Has been configured. The above-mentioned means, except for the CRT of the display means 13,
Both are composed of electronic computers.

To explain the operation of the above-mentioned configuration, the state of the plant 2 is input to the plant state diagnosing means 4, and the plant state diagnosing means 4 diagnoses the plant state according to the rules stored in the diagnostic rule storing means 3. I do.

At this time, the state of the plant 2 is diagnosed on the basis of the input signal from the plant 2, so if the signal necessary for the diagnosis cannot be obtained or if the input signal is defective, the operator is informed. A window for inquiring the plant status is displayed on the screen of the display means 13. A command such as an operator's selection for this inquiry is transmitted to the plant state diagnosis means 4 from a manual input means 14 such as a touch panel switch arranged on the front surface of the display means 13.

The diagnosis result of the plant state diagnosing means 4 is output to the operating procedure identifying means 5 and the operating procedure identifying means 5 is output.
Then, it is identified which part of the operating procedure manual in the database corresponds to the input diagnostic result. When there are a plurality of operating procedures identified at this time, the parallel operation priority order determining means 6 determines which operation is to be prioritized.

In the parallel operation priority determining means 6, the operation margin time is diagnosed from the monitoring parameter and its limit value as the information necessary for determining the priority from the operating procedure identifying means 5, but this margin is used here. The order of operations is determined so that the one with the shortest time is given priority. The determined result is output to the driving procedure identifying means 5 and used as information for identifying the driving procedure. If only one operating procedure exists, the parallel operation priority order determining means 6 is not used.

The results thus identified are output from the operating procedure identifying means 5 to the procedure guide selecting means 8, the flow chart selecting means 10 and the parameter selecting means 12,
Based on the identification results input from the procedure guide storage unit 7, the flowchart storage unit 9, and the display parameter combination storage unit 11, the procedure guide, the flowchart, and the parameters to be displayed are selected.

Each of the selected information is displayed on the display means 13. The flow chart displayed by the display means 13 receives the identification result of the driving procedure identification means 5 and shows, for example, the item corresponding to the current position in red, and the items traced in the past are color-coded in pink and the information changes. Is clarified. Further, a request from the operator to display the reason for diagnosis is transmitted from the manual input means 14 provided on the front surface of the display means 13 to the driving procedure identification means 5. The operating procedure identifying means 5 outputs a request for displaying the reason for diagnosis to the procedure guide selecting means 8.

The flow chart of FIG. 2 shows the flow of processing in the driving procedure guide device 1. In step S ₁ [Plant status clarification], it is determined whether or not the plant status is clarified, and if the plant status is unknown (step S ₁ ; N
O), a manual input request screen is output to the display means 13 as step S ₂ [manual input request], and the input content is determined in step S ₃ [input content determination].

Further, when the plant state is found in step S ₁ (step S _1; YES), step S ₄
In [Operating procedure identification], the operating procedure corresponding to the plant state at that time is identified, and step S ₅ [No parallel operation]
It is determined whether or not the operation procedure identified in step 2 is a parallel operation.

If it is a parallel operation (step S ₅ ;
YES), step S ₆ [diagnosis of each operation margin time] diagnoses the margin time of each operation, and step S ₇ [decision of priority operation] determines the priority order of the operation based on this diagnosis.
The method for diagnosing the margin time will be described below based on an example.

If the identified operating procedures are not parallel operations (step S ₅ ; NO), it is immediately determined in step S ₈ [diagnosis reason display request] whether or not there is a diagnosis reason display request, and the diagnosis reason display is displayed. If requested (step S
₈ ; YES), and step S ₉ [diagnosis reason display] displays the diagnosis reason on the display means 13.

Further, if there is no request for displaying the diagnostic reasons (Step S _8; NO), without performing the display of the diagnostic reasons, the selection of the display procedure guide by Step S ₁₀ [Selection of Display Procedures Guide], step S ₁₁ Introduction of selection of display flowchart by [selection of display flowchart] and selection of related parameter to be displayed by step S ₁₂ [selection of related parameter].

[0032] First, in the selection of the display procedure guide in step S _10, selects the procedure guides corresponding to the plant state, determines whether a display request supplemental guide Step S ₁₃ [There supplementary guide display request. If, if the display request (Step S _13; YES), the display of the supplementary guide in the display unit 13 in step S ₁₄ [Display supplementary guide. If there is no display request (step S _13;
No), the supplementary guide is not displayed.

[0033] At next step S _11, while selecting a flowchart corresponding to the plant state, the determination of color of the items making up the flowchart. That is, if the flow chart to be displayed is determined, [an item corresponding to the current value color change Step S _15, the displays items corresponding to the position of the current plant for example in red.

In the next step S ₁₆ [event development], it is determined whether or not the event has progressed since the previous diagnosis. If the event has progressed (step S ₁₆ ; YES), step S ₁₇
By [Change previous current value to color indicating past (red → pink)], the item displayed in red last time is changed to pink, for example, as an item traced in the past. If there is no progress of events (step S _16; NO) and remains red previous display on.

The selection of relevant parameters to display in step S ₁₂ selects some combination of parameters that must be monitored in order to carry out the operating procedure. Thus a selection of the information corresponding to the plant state, the step S ₁₈ in [Step guide, flowcharts, display of related parameters, is displayed on the display unit 13. These processes are executed periodically to clearly display each piece of information according to the change in the state of the plant.

Now, a method of diagnosing the margin of the operation will be described by taking the operation guideline of "reactivity control" in the nuclear power plant as an example. This operation guideline is applied when a scrum signal is generated in the reactor but some or all of the control rods are not inserted and the reactor cannot be made subcritical. It is a guideline.

This operation guideline describes that after the operation of the recirculation pump trip device, the operation of inserting the control rod, the operation of starting the boric acid water injection system, and the operation of controlling the water level are performed in parallel. The contents of each operation are shown below.

(1) Boric acid water injection system startup = reactor power is 8
When the suppression pool water temperature reaches 49 ° C or above in the case of above%, the boric acid water injection system is started. (2) Water level control = The reactor water level is restored and maintained between the set water levels L _{1 to} L ₈ . (3) Insertion of control rods = Set all control rods to positions where the reactor becomes subcritical.

Among these, (1) in the boric acid water injection system starting operation, the monitoring parameter is the suppression pool water temperature, and the limit value is 49 ° C. or higher. Further, in (2) water level control operation, the reactor water level becomes a monitoring parameter, and the limit values are set water levels L _{1 to} L ₈ . Of these monitoring parameters, the priority order is determined depending on which monitoring parameter is faster than the limit value.

For this purpose, the average rate of change per unit time is obtained, and the margin time until the limit value is exceeded is obtained from the relationship between the current value of the monitoring parameter and the rate of change described above. That is, the operation with the short margin time is preferentially performed.

The flow chart of FIG. 3 shows the flow of processing in the case of diagnosing the operation margin time in the parallel operation priority determining means 6. First, in step S ₁₉ , the parameter to be controlled is determined and used as the monitoring parameter. Next, in step S ₂₀ , the limiting value of the monitoring parameter is set to the operation procedure identifying means 5
Enter more.

[0042] If this by monitoring parameters and limit values is determined, in step S _21, performs sampling of this parameter in the operation procedure identification means 5. Furthermore, calculating the average rate of change per unit time based on the value sampled in step S _22. Also, limit value and the current value in step S _23, and calculates the margin time of the operation from the average rate of change. In this way, the parallel operation priority determining means 6 determines the priority of each operation based on the calculation result of the margin time.

For example, the current value of the suppression pool water temperature is 25 ° C., and the average rate of change per second is + 0.05 ° C./S.
Then, the margin time to reach the limit value of 49 ℃ is 480 seconds. When the reactor water level is 500 mm and L ₁ is -3780 mm and the average rate of change per second is -10 mm / S, the margin time is 429 seconds, and the priority operation is from the boric acid water injection system startup. Is also water level control.

The display screen shown in FIG. 4 is an example of a screen displayed on the display means 13. The flow chart is shown in the first window 15 on the left side of the screen, and the driving operation and reference matter are shown in the second window 16 at the upper right. Further, related parameters are displayed in the third window 17 at the lower right. The flowchart shown in FIG. 4 shows a state in which items are not satisfied.

The display screen diagram of FIG. 5 is an example of a screen showing a state where the items of the flowchart are established, and in the step S in the figure.
24 and S25 are items established in the past, and step S26 is an item corresponding to the current plant state, and displayed in different colors. In this way, when displaying the flowchart, the present and past of each part are shown separately by color coding. Further, even if the present and past color classifications are distinguished by the still screen and the flicker screen, the same effect as the color classification can be obtained.

In the present invention, for example, the operating procedure manual prepared in the conventional plant is used as a database of the computer to construct the information describing the operating procedure in the flow chart and the procedure guide, and the state of the plant is diagnosed online. Then, it is automatically determined where this plant state corresponds to the operating procedure, and the display means 13 displays it, and a color-change display such as a flowchart is displayed.

Further, when the driving procedure manual includes a description that a plurality of driving operations are carried out in parallel, the time margin for each operation is diagnosed, and the operation procedure having a short time margin is preferentially displayed. Since the operator performs the dialogue and command with the driving procedure guide device 1 by the manual input means 14 on the front surface of the display means 13, even when it is necessary to make an emergency judgment and operation especially in the case of an accident or the like. , The operator can take appropriate measures immediately and the burden is reduced.

The present invention has the following embodiments. (1) The procedure guide displayed on the display means is classified into a basic guide and a supplementary guide, and the basic guide is always displayed.
The supplementary guide is displayed in a pop-up window using a multi-window as required.
The described operating procedure guide device.

(2) The operating procedure guide device according to claim 1, wherein the flow chart displayed on the display means distinguishes the item corresponding to the present plant state and the item established in the past by the flicker display. (3) In the parallel operation priority determining means, when a plurality of driving operations are simultaneously performed in parallel, the margin time of each driving operation is diagnosed, and the procedure of the operation having a small margin time is prioritized. Item 1. A driving procedure guide device according to item 1.

[0050]

As described above, according to the present invention, conventionally, it is not necessary for an operator to turn over pages of an operation procedure sheet when an accident occurs and search for an operation procedure corresponding to a plant state.
Since the plant state is automatically judged and the operator is provided with the flowchart, the procedure guide, and the related parameters corresponding to the plant state, the countermeasures especially in the case of a severe accident can be promptly and appropriately implemented.

Further, since the display color of the flowchart is displayed on the display means by distinguishing between the present and the past and the change in the plant state can be grasped, advance forecasting becomes easy, and the reliability and safety of plant operation are improved and the operation is improved. It has the effect of reducing the burden on members.

[Brief description of drawings]

FIG. 1 is a block diagram of a driving procedure guide device according to an embodiment of the present invention.

FIG. 2 is a processing flow chart of an embodiment according to the present invention.

FIG. 3 is a flowchart for diagnosing a margin time in the parallel operation priority order determining means according to the embodiment of the present invention.

FIG. 4 is a display screen diagram of an embodiment according to the present invention.

FIG. 5 is another display screen diagram of the embodiment according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operating procedure guide device, 2 ... Plant, 3 ... Diagnosis rule storage means, 4 ... Plant state diagnosis means, 5 ... Operation procedure identification means, 6 ... Parallel operation priority order determination means, 7 ... Procedure guide storage means, 8 ... Procedure guide selection means, 9 ... Flow chart storage means, 10 ... Flow chart selection means, 11 ... Display parameter combination storage means, 12 ... Parameter selection means, 13 ... Display means, 14 ... Manual input means, 15 ... First window, 16 … Second window, 17… Third window.

Claims (1)

[Claims] 1. A plant state diagnosing unit that inputs plant information and diagnoses a plant state according to a rule stored in a diagnostic rule storing unit, and identifies which part of a database-based operating procedure corresponds to this diagnostic result. Operating procedure identifying means, parallel operation priority order determining means for determining priority when a plurality of identified operating procedures exist, and procedure guide storing means by inputting operating procedure identification information from the operating procedure identifying means. Procedure guide selecting means for selecting a procedure guide from the flow chart, flow chart selecting means for selecting a flow chart from the flow chart storing means, parameter selecting means for selecting a parameter from the display parameter combination storing means, the plant state diagnosing means, and the procedure guide selecting means , Flow chart selection means, and parameter selection hands A driving procedure guide device comprising display means for inputting information from a stage and displaying the past and present states by color coding and the like, and a manual input means provided on the front surface of the display means.