JP2011096029A - Method and system for supporting maintenance operation plan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a system for supporting a maintenance operation plan, by which an isolation operation can be readily planned, in a short period, in plant maintenance operation, and furthermore, man-power saving and accuracy improvement of operation can be attained. <P>SOLUTION: In the maintenance operation support method for investigating soft isolation in plant maintenance operation, isolation available points are set on an IBD (interlock block diagram), in order to refer to a soft logic diagram from the IBD (interlock block diagram); an input signal from a target plant for determining a logical state of each isolation available point is specified; a logic sheet number of the soft logic diagram in which the input signal is described is specified; the corresponding soft logic diagram is extracted from a plurality of soft logic diagrams, based on the logic sheet number and the input signal name from the target plant; and the extracted soft logic diagram is discriminatively displayed on a screen of a personal computer PC. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method and system for supporting the creation of an isolation plan used for an operation of isolating a specific device during maintenance or inspection of a plant.

  When performing maintenance and inspection work on facilities and equipment such as plant operating devices and monitoring equipment, the target equipment (for example, valves, pumps, motors, etc.) is mechanically and electrically stopped for safety. Temporarily isolating the target part of the plant so that it cannot be operated is called isolation.

  There are two forms of isolation: hard isolation and soft isolation. It is called hard isolation to put an "operation prohibition tag" on a switch of a device (valve, pump, etc.) or to perform a lift or jumper operation on the actual circuit wiring. Executing the operation stop logic of the target device with the software of the controller is called soft isolation.

  According to the latter soft isolation using a controller, the contents of the isolation work can be automatically reflected in the controller, and the current isolation state can be confirmed by the controller, so it is not necessary to go to each area in the field. There is an effect that work can be performed in the central control room. In this way, it is likely that the prior examination of soft isolation work will be more efficient than hard isolation because it is automatically registered in the controller, but in reality it requires a lot of time and effort. Is on.

  Hard isolation and soft isolation differ in the drawings and procedures used in the preliminary examination stage of isolation work. As shown in FIG. 2, in order to examine hard isolation, a single-line connection diagram, P & ID (pipe instrumentation diagram), and ECWD (development connection diagram) are used. On the other hand, when examining soft isolation, IBD (interlock block diagram: INTERROCK BLOCK DIAGRAM), ECWD (deployment connection diagram: ELEMENTARY CONTROL WIRING DIAGRAM), and soft logic diagram are used.

  However, for example, in the case of a nuclear power plant, the number of drawings used for the examination of isolation is thousands of IBD (interlock block diagram), tens of thousands of soft logic diagrams, and approximately 10,000 ECWD (deployment connection diagram). Go up to the sheet.

  For this reason, the relationship between the drawings is complicated, and it takes time and labor to use more drawings than hard isolation at the time of creating the isolation work list. In this way, when examining isolation, the time required for browsing and studying a large number of drawings increases, and there is a possibility that rapid isolation examination cannot be performed when dealing with troubles.

  In this way, in the current soft isolation study, thousands of IBD (interlock block diagram), tens of thousands of soft logic diagrams, about 10,000 ECWD (deployment connection diagram), etc. Therefore, it is essential to investigate and specify the relational drawings to be used for the isolation examination work at a specific location.

  In this regard, in the conventionally known Patent Document 1, automatic search is performed by using the association between device information written on a physical CAD screen such as a P & ID drawing and sheet numbers of various drawings, and an isolation range is determined. It is proposed to make a decision on the drawing.

JP 2003-202920 “Maintenance management system, method and program”

  However, as shown in FIG. 2, an IBD (interlock block diagram) representing a logical signal used when considering soft isolation, a soft logic diagram and an ECWD (development connection diagram) representing physical signals. Since there is no related information between them, it is difficult to realize an automatic search on the CAD screen as it is.

  In addition, when conducting a soft isolation examination work, the related soft logic diagram, PI / PI, based on the character information described in the location to be isolated on the IBD (interlock block diagram) drawing at present. Actually, there is only an effective method of searching for an O (process input / output device) signal table or ECWD (development connection diagram) while examining physical related information.

  As described above, it is very time consuming and labor intensive to examine the isolation of various drawings by hand and to create data, which is inefficient.

  In the present invention, a plurality of IBD (interlock block diagram) representing a logic circuit showing a connection relationship of input signals from the target plant, and a plurality of soft logic diagrams representing physical signals from the target plant, , Having the same information as the information described in the soft logic diagram as key information, and a sequence control operation process for each device in the target plant, and a plurality of ECWDs (development connection diagrams) indicating the connection state between the devices, In the maintenance work plan support method for the isolation pre-examination to be performed before the maintenance work of the plant is displayed by displaying these drawings on the screen of the personal computer PC using the IBD (interlock block diagram) to the soft logic diagram In order to refer to this, an isolatable location is set on the IBD (interlock block diagram), and the isolation Identify the input signal from the target plant that determines the logic state of the target location, specify the logic sheet number of the soft logic diagram describing the input signal, and from the logic sheet number and the input signal name from the target plant, A corresponding soft logic diagram is extracted from a plurality of soft logic diagrams and displayed on the screen of the personal computer PC.

  Also, the corresponding ECWD (development connection diagram) is extracted from a plurality of ECWDs (development connection diagrams) from the extracted key information described in the corresponding soft logic diagram, and is displayed on the screen of the personal computer PC. May be.

  In addition, there are a plurality of isolatable locations set on the IBD (interlock block diagram), and the soft logic diagram and ECWD (development connection diagram) are sequentially referred to for each isolatable location on the screen of the personal computer PC. May be displayed.

  In addition, the result of referring to the sequential soft logic diagram and ECWD (development connection diagram) from the IBD (interlock block diagram) is reflected on the screen of the personal computer PC displaying the IBD (interlock block diagram). May be.

  In addition, on the screen screen of the personal computer PC displaying the IBD (interlock block diagram), the input signal from the target plant that determines the isolation state, the logical state of the isolation point, and the input signal are described. By displaying the logic sheet number of the soft logic diagram and specifying the location where isolation is possible, the corresponding soft logic diagram may be extracted from a plurality of soft logic diagrams and displayed on the screen of the personal computer PC. .

  In the present invention, a plurality of IBDs (interlock block diagrams) representing a logic circuit showing the connection relation of input signals from the target plant and a plurality of software representing physical signals from the target plant. It has the same information as the information described in the logic diagram and the soft logic diagram as key information. For each device in the target plant, a sequence control operation process and a plurality of ECWD (development) indicating the connection state between devices In the maintenance work planning support system for the isolation pre-examination to be performed before the maintenance work of the plant by displaying these drawings on the screen of the personal computer PC using the connection diagram), from the soft logic range and the isolation part Drawing processing means for adding additional information to an IBD (interlock block diagram), and an attribute table for the IBD additional information The inter-drawing link means for realizing a link from the IBD (interlock block diagram) plane to another drawing, and the drawing for searching and selecting the IBD (interlock block diagram) plane including the signal to be isolated. Search selection means, setting means for setting an isolation location from the isolation possible location added in advance in the drawing, and a soft logic diagram sheet number and PI / O (process input / output) specified in the set isolation location Device) Based on the signal, data storage to store the relevant soft logic diagram, the isolation location tracking means to follow ECWD (development connection diagram), and the necessary drawing information tracked by the tracking means as target isolation location data And the isolation location data created by the storage means And a data providing means for providing the logic isolation device.

  According to the present invention, it is possible to provide a maintenance work plan support method and system that can easily plan an isolation work in a short time, and further save work and improve accuracy.

  Also, in the isolation study, unlike the technology that can automatically search and determine the isolation range by using the connection between the target device information and the drawing number described on the conventional physical CAD screen, By adding link information between a logical CAD drawing without link information and a physical CAD drawing, it is possible to realize a quick drawing search across various drawings.

  Furthermore, it is possible to provide an isolation examination method for a drawing in which isolation information of all patterns is provided on the drawing in advance, and the user can easily select and confirm the pattern according to the business contents.

The figure which shows the background of drawing reference at the time of the isolation prior examination of this invention. The figure for demonstrating drawing used in the prior examination stage of isolation work. The figure for demonstrating an attribute table. The figure which shows an example of IBD (interlock block diagram). FIG. 4 is a diagram in which IBD additional information is described as key information necessary for enabling reference to a soft logic diagram in the circuit of FIG. 4. The figure which shows an example of a soft logic figure. The figure which shows an example of a soft PI / O table figure. The figure which shows an example of an ECWD sequence diagram. The figure which shows an example of an ECWD figure. The figure which shows the process flowchart of the maintenance work plan assistance system of this invention. 1 is a system configuration overview diagram that realizes isolation. FIG. The figure which listed the information used as the key of cooperation between drawings.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the present invention, in performing the soft isolation pre-examination, IBD (interlock block diagram) is basically used, and software logic diagrams and ECWD (development connection diagrams) are sequentially referred to to obtain information necessary for isolation. Confirmation / collection is completed, and the results are converged and displayed on the original IBD (interlock block diagram).

  As shown in FIG. 2, there is no key information enabling direct reference between the IBD (interlock block diagram) and the soft logic diagram or ECWD (development connection diagram), but the soft logic diagram and ECWD ( There is a reference relationship between the development and connection diagram. Therefore, in the present invention, key information is newly set between the IBD (interlock block diagram) and the soft logic diagram, and based on this, reference is made to the ECWD (development connection diagram) and a connection relationship is established.

  FIG. 1 is a diagram showing the background of reference to a drawing when considering isolation. Here, several thousand IBD (interlock block diagram), tens of thousands of soft logic diagrams, and about 10,000 ECWD (expanded connection diagram) are targeted. As mentioned above, IBD (interlock block diagram) is the basic, and in order to refer to the soft logic diagram and ECWD (development connection diagram), key information for organically connecting between them is required. However, the details will be described later, and only the reference process will be described here.

  In the present invention, attention is paid to one IBD (interlock block diagram) 31 related to a portion where isolation is planned, and the corresponding one IBD (interlock block diagram) 31 corresponds to this. Refer to FIG. 32 for soft logic. Further, referring to the soft logic FIG. 32, the soft PI / O table FIG. 33 is referred to. Next, the ECWD sequence diagram 34 is referred to from the soft PI / O table FIG. 33, and the ECWD (development connection diagram) 35 is referred to from here. Information obtained or confirmed in the process referred to in this process is finally reflected in the original IBD (interlock block diagram) 31 as necessary.

  As described in FIG. 2, there is information for sequentially referring to the software logic diagram 32, the software PI / O table diagram 33, the ECWD sequence diagram 34, and the ECWD (development connection diagram) 35. However, as key information for connecting and referencing the IBD (interlock block diagram) 31 and the soft logic diagram 32, the present invention has the attribute table of FIG. 3 prepared in advance.

  Hereinafter, the background of each figure in FIG. 1 and the implementation items in each figure will be described with reference to specific examples. 4 and FIG. 5, the attribute table as key information is shown in FIG. 3, the software logic FIG. 32 is shown in FIG. 6, and the software PI is shown in FIG. / O table FIG. 33 shows the specific description of FIG. 33, FIG. 8 shows the specific description of the ECWD sequence FIG. 34, FIG. 9 shows the specific description of the ECWD (development connection diagram), and lists the information that is the key for inter-drawing cooperation This is shown in FIG. In each of the above drawings, the data recorded in the memory is actually created by the plant maintenance personnel operating on the screen of the personal computer PC, and the data is stored in the database.

  Hereinafter, the reference procedure and work contents in each drawing of FIG. 1 will be described in order. First, an IBD (interlock block diagram) will be described. This is a diagram in which the connection relationship of digital signals output from each facility in the target plant is represented by a logical AND / OR circuit. It is. FIG. 4 shows an example of a specific initial AND / OR circuit. FIG. 5 is a diagram in which IBD additional information is described as key information necessary for enabling reference to the soft logic FIG. 32 in the initial circuit of FIG.

  FIG. 4 is an IBD (interlock block diagram) to which NE62 (meaning of NE series sheet 62) is assigned a sheet number among several thousand IBDs (interlock block diagram). OR is a logical sum circuit, and 310, 311, and 312 are IBD drawing information.

  Here, the IBD drawing exchange information is information indicating the location of the drawing in which the logic circuit on the upstream side is described. For example, the IBD drawing exchange information 310 is the NE series sheet 31 drawing. The upstream side information is described at the coordinate A2, the upstream information is described at the coordinate A2 of the drawing of the 14th series of seats 19, and the coordinate O1 of the drawing of the sheet NC3 of the EK series is 312 This means that upstream information is described at coordinates D4 in the drawing.

  The IBD (interlock block diagram) 31 shown in FIG. 4 is not necessarily one of thousands of IBDs (interlock block diagram). In this example, an IBD (interlock block diagram) at the final stage that determines opening / closing of the outlet valve A, which is a specific operation end in the control target plant, is selected. This is because it is effective to set the end portion of the logic circuit (immediately before the operation end) when setting the soft-isolated portion. In this figure, attention is paid to a circuit portion in which the outlet valve A is fully opened by the output of the OR circuit OR1, and the outlet valve A is fully closed by the output of the OR circuit OR2.

  FIG. 4 shows an example of the IBD screen displayed on the screen of the personal computer PC in normal use. However, when the soft isolation preliminary examination is executed, the display is changed to the display of FIG. The display of FIG. 5 is obtained by adding IBD additional information on the IBD (interlock block diagram) of FIG. The additional information used here is “soft logic range 11”, “logic sheet number 12”, “isolation possible location”, and “PI / O signal 14”.

  The soft logic range 11 which is one of the elements in the IBD (interlock block diagram) additional information is used for physical signal input / output related to the logic circuit described in the IBD (interlock block diagram). It is an element indicating the system range on the represented soft logic screen. FIG. 5 shows an example in which two soft logic ranges 11A and 11B are set for the IBD (interlock block diagram) 31 of FIG. On the PC PC screen, the soft logic range 11 is, for example, a closed loop surrounded by a dotted square or polygon, and a comment character string (BOP1 and BOP2) of the same color as the closed loop is written inside the frame. Design in the form of The comment character indicates the system name of this system range.

  The soft logic range 11 represents a system. There are several ways of thinking about the location where isolation is possible. In the example shown in the figure, there are several states (full open) for the operation end that is most easily operated to achieve isolation, for example, the outlet valve A. Alternatively, it is set on the output side of the arithmetic circuit capable of realizing (fully closed).

  An isolatable portion that is one of the elements in the IBD (interlock block diagram) additional information is set in the soft logic ranges 11A and 11B. In the example shown in the figure, point b on the line (output of OR circuit OR1) instructing full opening of outlet valve A in soft logic range 11A, and point a on the line instructing full closing of outlet valve A The point c in the soft logic range 11B is selected. Isolation possible portions are arranged on signal lines on the screen of the personal computer PC and designed in the form of colored circle symbols (black circles in the example in the figure).

  It should be noted that the parts that can be isolated are set in advance to all parts that can be isolated in the drawing. When conducting a pre-examination of soft isolation, the connection relationship is referred to for each identified location that can be isolated, but it is often seen from the operator's point of view to examine the possibility of isolation one after another. It is more useful in terms of reliability that the possibility of Therefore, even if 10 options are presented, a result may be obtained without actually checking the last option.

  In the present invention, the additional information “soft logic range 11” and “isolation location” are displayed on the IBD (interlock block diagram) screen of FIG. 5 and the soft logic diagram 32 can be referred to. “PI / O signal 14” and “logic sheet number 12” are further described on the same figure as key information necessary for the above.

  For this display, the attribute table of FIG. 3 is referred to. The attribute table 201 is created for each part 13 that can be isolated, and the logic sheet number 12 in the soft logic diagram 32 corresponding to the part that can be isolated, and the PI / used to determine the control signal at this part. An O signal 14 (in which the name of a process signal input from a plant to be controlled is described) or the like is created and stored in advance as a definition attribute 25. In addition, software logic diagram sheet number data, PI / O (process input / output device) signal data, and the like are defined.

  Looking at the PI / O signal 14 among the definition attributes 25, when an isolatable part is specified, an upstream PI / O (process input / output device) signal that determines the logic of this part can be specified. For example, in the case of the isolation point b, IBD drawing inter-work information 310 and 312 are referred to, and B1L0406-16, B1L0406-27, and B1L0406-28 are extracted as PI / O (process input / output device) signals 14b. Is done. Similarly, in the case of a point a that can be isolated, reference is made to the inter-IBD drawing information 311 and the like, and B1L0406-15, B1L0406-29, and B1L0406-30 are extracted as the PI / O (process input / output device) signal 14a. Is done. Further, in the case of the isolation point c, the upstream of the OR circuit OR2 is referred to, and B2L0326-23 is extracted as the PI / O (process input / output device) signal 14c. From these facts, it can be understood that the attribute table of FIG. 3 is created by associating the PI / O (process input / output device) signal 14 with each isolationable portion 13. In FIG. 5, PI / O (process input / output device) signals 14 are collectively displayed for each portion 13 that can be isolated.

  In addition, the soft logic diagram sheet number 12 is created and stored in advance in the attribute table 201 for each part 13 that can be isolated in FIG. 3 as key information necessary for enabling reference to the soft logic diagram 32. Here, the soft logic FIG. 32 is a logic circuit provided for each operation end of the outlet valve A or the like. For example, a logic circuit that determines whether the outlet valve A is fully open or fully closed by automatic control is used as one unit. A PI / O (process input / output device) signal 14 for determining whether the outlet valve A is fully opened or fully closed is formed on the sheet.

  FIG. 6 shows an example of the soft logic diagram 32. Here, all PI / Ps involved in the logic circuit that determines whether the outlet valve A in FIG. 4 and FIG. The O (process input / output device) signal 14 and its logic are unified and displayed with a sheet number of “B1L1938”.

  In the present invention, the IBD (interlock block diagram) is described by describing the soft logic diagram sheet number 12 in the attribute table 201 for each part 13 that can be isolated by paying attention to the creation criteria as described above in the soft logic diagram 32. From 31, the soft logic FIG. 32 can be referred to. In FIG. 5, a soft logic diagram sheet number for each part that can be isolated is described with reference to the attribute table 201. In the example of the figure, the sheet number “B1L1938” is displayed as the soft logic diagram sheet numbers 12a and 12b at the positions of the isolation points a and b, and the soft logic diagram sheet number 12c at the position of the isolation point c is possible. As can be seen on the drawing, the sheet number “B2L2935” is displayed.

  As is clear from the above description, among the plurality of attribute tables 201 in FIG. 3, the definition attribute of the attribute table 201 a corresponding to the soft isolation possible location “a” is the sheet “B1L1938” as the logic diagram sheet number 12. A number is recorded, and “B1L0406-15”, “B1L0406-29”, and “B1L0406-30” are recorded as the PI / O signal 14.

  In this way, the IBD (interlock block diagram) 31 for pre-examination of isolation shown in FIG. 5 is prepared and the reference relationship with the soft logic diagram 32 is set. First, a specific operation end is determined from a plurality of IBDs (interlock block diagram) 31, and one IBD (interlock block diagram) 31 corresponding to this is displayed on the screen of the personal computer PC. .

  The IBD (interlock block diagram) 31 at this time is, for example, FIG. 5, and the operator next selects, for example, point a from the isolation possible positions displayed here. By this selection, the point a is changed from the black circle display to the white circle display, and the operator recognizes that the soft isolation pre-examination at this point has been entered. At the same time, the attribute table 201a corresponding to point a is referenced from the attribute table 201 in FIG. 3, and “B1L1938” is obtained as the logic diagram sheet number. A software logic diagram corresponding to “B1L1938” is displayed on the screen of the personal computer PC from the plurality of software logic diagrams. The screen extracted at this time is shown in FIG. Note that FIG. 6 is overlaid on FIG. 5 on the screen of the personal computer PC.

  In the extracted soft logic diagram of FIG. 6, “B1L1938” is indicated at the top of the screen as the logic diagram sheet number 12, and all PI / Os (process input / output devices) involved in the full opening and closing of the outlet valve A Signal 14 is displayed on the logic circuit. Of the PI / O (process input / output device) signal 14, the PI / O (process input / output device) signal “B1L0406-30” related to the isolation possible point a selected by the operator for the preliminary examination of soft isolation. ”And“ B1L0406-15 ”are displayed in different colors or with flicker, etc., thereby allowing the operator to visually recognize the relationship on the soft logic diagram.

  The PI / O (process input / output device) signal “B1L0406-30” is composed of two parts, one of which is a PI / O table number “B1L0406”, and “30” is a consistent number. It is.

  In FIG. 1, it has been explained that the soft logic is composed of the soft logic diagram 32 and the soft PI / O table diagram 33. The operator who checked the soft logic diagram 32 next refers to the soft PI / O table diagram 33. To do. At this time, the above-mentioned PI / O table number “B1L0406” is selected from among the PI / O signals in which the relationship with the isolatable part a is clearly displayed in red on the soft logic diagram 32. As a result, the PI / O table FIG. 33 managed by the PI / O table number “B1L0406” of the PI / O signal is extracted from the plurality of software PI / O tables FIG. 33 as shown in FIG. Displayed above.

  In FIG. 33, the PI / O table number “B1L0406” of the PI / O signal is shown at the top, the PI / O signal consistent number is on the vertical axis, and the PI / O table is on the horizontal axis. As signal attributes, signal name, LOGIC (logic circuit name), SEQ (sequence number), connection destination, instrument name, and the like are displayed. Here, the consistent number means a number subsequent to the PI / O table number “B1L0406” of the PI / O signal in the soft logic FIG. 32, and this PI / O signal “ Attributes of “B1L0406-15” and “B1L0406-30” are described. Needless to say, the notation in the column of the corresponding number is distinguished from other notations.

  According to this notation, the PI / O signal “B1L0406-15” means that the name of the process signal fetched from the plant is XXXX (A), and the LOGIC (logic circuit name: logic name of the soft logic diagram of FIG. 32) in FIG. “B1L1938” describes that the SEQ sequence number is “DN319” or the like. Also, the PI / O signal “B1L0406-30” is that the name of the process signal fetched from the plant is XXX (C), and the LOGIC (logic circuit name: logic name of the soft logic diagram 32 in FIG. 6) is “B1L1938”. The SEQ sequence number is “DN320” or the like. Although other information is also described, the description is omitted because it is not directly related to the description here.

  Next, the operator displays an ECWD sequence diagram on the screen of the personal computer PC using the SEQ sequence numbers “DN319” and “DN320” as reference information. Here, ECWD refers to a development connection diagram, which is a sequence development of the sequence control operation process according to the operation sequence, among which the state of mutual connection of devices, switchboards, units, etc. It is the connection diagram drawn for every apparatus for the purpose of showing up to.

  FIG. 8 is an ECWD sequence diagram extracted in this way. Since the ECWD is a diagram configured for the above purpose, on the left side of FIG. 8 is a name (name given to the isolation range 11A in FIG. 5) and a panel number (this PI / O signal from the plant). The sheet number (B1L0406) for linking with the software PI / O table of FIG. 7 is described together with the identification number of various boards when fetching), the unit name, the slot name, the model RTB, and the like. Also, on the right side of the figure, from the top, the control target devices (high pressure drain pump (A) HPDP (A)), DO (DIGITAL OUTPUT) channel numbers (D and E: numerical values from 0 to 9, and A to F 16 types of numerical values and symbols), and terminal numbers (A14, etc.) are displayed.

  In the case of FIG. 8, the bold portion is identified and displayed. For example, “DN319” identifies and displays terminal numbers A15 and B15 of channel number E, and “DN320” identifies and displays terminal numbers A14 and B14 of channel number D. ing.

Next, when the operator refers to the ECWD diagram of FIG. 9, the portion specified in the ECWD sequence diagram of FIG.
For example, refer to the unit number (NOO-B1-R62-2) of DN319 and the unit number (NOO-B1-R62-4) of DN320 in FIG. 8, and the circuit portion of this unit number is displayed as FIG. The Unit Y1 corresponds to the unit number (NOO-B1-R62-4) of DN320, unit Y2 corresponds to the unit number of DN319 (NOO-B1-R62-2), and unit Y1 has its DO (DIGITAL OUTPUT). ) Terminals B14 and A14 are connected, and in the unit Y2, B15 and A15 are connected among the DO (DIGITAL OUTPUT) terminals.

  This circuit of FIG. 9 shows an operation circuit of the motor M that opens and closes the outlet valve A described in the circuit of FIG. The motor M is driven by a three-phase power source of R phase, S phase, and T phase, and its phase order is determined by the unit circuits Y1 and Y2 and rotates forward and backward. In the frame on the left side of FIG. 9, point 1 of the power supply circuit branched from the power supply R phase, contact number (1-3) meaning the power supply circuit point 3 branched from the power supply T phase, or branching from the power supply R phase This represents that the motor M is fully closed when a contact number (2-3) representing point 2 of the power supply circuit and point 3 of the power supply circuit branched from the power supply T phase is established.

  The establishment of the contact number (1-3) is determined by the unit circuit Y2, and the establishment of the contact number (2-3) is determined by the unit circuit Y1. These are all circuits for fully closing the motor M, and referring to the meaning of the signal of the isolation possible position a in FIG. It can be seen that the two upstream signals correspond to the unit circuits Y1 and Y2.

  In FIG. 9, a partially enlarged view is shown, but by displaying a corresponding screen of the development connection diagram for each corresponding device, the operator can confirm what happens as a result of the preliminary examination of isolation.

  As described above, while following the linkage of the screens displayed on the screen of the personal computer PC, the operator can obtain a variety of information related to the isolatable portion specified in FIG. Thus, the result on the ECWD diagram can be confirmed. This result becomes the knowledge of the operator and is accumulated in the database as necessary. In addition, sufficient results may not be obtained simply by designating and confirming this isolatable location. In this case, another isolatable location is designated again and the same process as described above is repeated. Run until results are obtained.

  Although the cooperation between the drawings has been described with reference to FIGS. 5 to 9, FIG. 12 shows a list of information that is a key for the cooperation between the drawings. According to this, in order to link the IBD (interlock block diagram) 31 and the soft logic diagram 32, the logic sheet number 12 and the PI / O signal are newly set. There is a PI / O signal for cooperation between the soft logic diagram 32 and the soft PI / O table 33, which consists of a PI / O table number and a consistent number. In order to link the software PI / O table 33 and the ECWD sequence 34, the PI / O table number and the sequence number are used. Channel numbers and terminal numbers are used to link the ECWD sequence 34 and the ECWD 35.

  As is apparent from the above description, FIG. 10 shows a processing flowchart of the maintenance work plan support system of the present invention. When performing the isolation pre-examination, first, in the drawing search / selection step S41, an IBD drawing including a portion to be subjected to the current maintenance work is selected from a plurality of IBD drawings.

  After the IBD drawing is confirmed, the process proceeds to an isolation location setting step S42 for selecting an isolation location according to the business contents from the isolation possible locations provided on the drawing. There may be a plurality of isolation locations.

  In order to confirm the set isolation location, in the isolation location tracking step S43, a check is sequentially performed according to link information between drawings such as a soft logic diagram, a PI / O signal table, and an ECWD diagram.

  In this manner, in step S44, tracking and setting are repeated for all the isolation locations while determining whether or not the isolation location settings are complete.

  Finally, in step S45, the data of the determined isolation part is stored. In step S46, the data stored in the isolation location data storage step is provided to a related system such as a soft isolation device. This is realized in the related system data providing step.

As is clear from the above description, the maintenance work plan support system of the present invention includes a drawing processing means for adding IBD (interlock block diagram) additional information from the soft logic range 11 and the isolation point 13, and the IBD addition. Inter-drawing link means (FIG. 12) capable of realizing a link from an IBD (interlock block diagram) surface to another type of drawing by having an information attribute table 201, and an IBD (interlock block) including an isolation target signal A diagram search / selection means (S41 in FIG. 10) for searching and selecting a plane; a setting means S42 for setting an isolation location from the previously-isolated location that has been added in the form of a drawing; Explicit soft logic diagram sheet number and PI / O (process input / output device ) Based on the signal, the associated soft-logic diagram, a PI / O (process input and output device) table, the isolation position tracking means S43 for traced to ECWD (expanded connection diagram),
Data storage means S44 for storing necessary drawing information tracked by the tracking means as target isolation location data, and data providing means S45 for providing the isolation location data created by the storage means to a soft logic isolation device; Consists of
Note that the above-described isolation pre-examination work is not performed using an actually operating plant or a controller that is controlling the plant. It is a device for performing off-line verification to the last.

  FIG. 11 shows an example of a system configuration for realizing isolation using soft isolation data created by the maintenance work plan support system of the present invention.

  As shown in FIG. 11, this system includes a general-purpose personal computer isolation data creation offline device 51, a recording medium 52, a soft logic isolation online device 53, a communication device 58, a CPU controller 54, and a process input / output device. 55 and a remote input / output device 56.

  The maintenance work plan support system of the present invention is installed in the general-purpose personal computer isolation data creation offline device 51, the isolation preliminary examination is executed, and as a result, the isolation data is created. The isolation data from the offline device 51 is transferred on the recording medium 52. The soft logic isolation device 53 inputs the received isolation data to the controller CPU 54 via the communication device. Each controller performs isolation or cancels isolation through the process input / output device 55 and the remote input / output device 56.

  According to the present invention, it is possible to examine isolation in advance offline, and by adding additional information to an IBD (interlock block diagram), other various drawings are organically coupled to examine the isolation result. Make it possible to do. As a result, even if it is an existing plant or a new plant, isolation can be easily performed.

12 Logic diagram Sheet number 13 Isolation possible location 14 PI / O signal 31 IBD (interlock block diagram)
32 Soft Logic FIG. 33 Soft PI / O Table FIG. 34 ECWD Sequence Diagram 35 ECWD Drawing 36 IBD Drawing 201 Attribute Table

Claims (6)

A plurality of IBD (interlock block diagram) representing a logic circuit showing a connection relationship of input signals from the target plant, a plurality of soft logic diagrams representing physical signals from the target plant, and the soft logic It has the same information as the information described in the figure as key information, and uses a sequence control operation process for each device in the target plant and a plurality of ECWDs (deployment connection diagrams) indicating the connection state between devices. In the maintenance work plan support method for the isolation pre-examination performed before the maintenance work of the plant is displayed by displaying these drawings on the screen of the personal computer PC,
In order to refer to the soft logic diagram from the IBD (interlock block diagram), an isolatable location is set on the IBD (interlock block diagram), and a logic state of the isolatable location is determined. The input signal from the target plant is specified, the logic sheet number of the soft logic diagram describing the input signal is specified, and the plurality of soft logic diagrams are obtained from the logic sheet number and the input signal name from the target plant. A maintenance work plan support method, comprising: extracting a corresponding soft logic diagram from the list and displaying the soft logic diagram on the screen of the personal computer PC. In the maintenance work plan support method described in item 1,
A corresponding ECWD (development connection diagram) is extracted from the plurality of ECWDs (development connection diagram) from the key information described in the extracted corresponding soft logic diagram, and is displayed on the screen of the personal computer PC. A maintenance work plan support method characterized by displaying an identification on the screen. In the maintenance work plan support method described in item 2,
The IBD (interlock block diagram) has a plurality of isolatable locations, and a soft logic diagram and an ECWD (development connection diagram) are sequentially referred to for each isolatable location on the screen of the personal computer PC. A maintenance work plan support method characterized by being displayed on the screen. In the maintenance work plan support method according to item 3 or 4,
The result of referring to the sequential soft logic diagram and the ECWD (development connection diagram) from the IBD (interlock block diagram) is displayed on the screen of the personal computer PC displaying the IBD (interlock block diagram). A maintenance work plan support method, which is reflected in In the maintenance work plan support method described in item 1,
On the screen screen of the personal computer PC that displays the IBD (interlock block diagram), the input signal from the target plant that determines the logical state of the isolatable part, the logical state of the isolatable part, and the input signal described above By displaying the logic sheet number of the soft logic diagram and specifying the location where the isolation is possible, the corresponding soft logic diagram is extracted from the plurality of soft logic diagrams and identified and displayed on the screen of the personal computer PC A maintenance work plan support method characterized by the above. A plurality of IBD (interlock block diagram) representing a logic circuit showing a connection relationship of input signals from the target plant, a plurality of soft logic diagrams representing physical signals from the target plant, and the soft logic It has the same information as the information described in the figure as key information, and uses a sequence control operation process for each device in the target plant and a plurality of ECWDs (deployment connection diagrams) indicating the connection state between devices. In the maintenance work plan support system for the isolation pre-examination that is performed before the maintenance work of the plant by displaying these drawings on the screen of the personal computer PC,
From the IBD (interlock block diagram) surface by having drawing processing means for adding additional information to the IBD (interlock block diagram) from the soft logic range and isolation location, and an attribute table of the IBD additional information Inter-drawing link means for realizing a link to the other drawings, drawing search / selection means for searching and selecting the IBD (interlock block diagram) plane including the signal to be isolated, and added in advance on the drawing Based on the setting means for setting the isolation location from the isolation possible location, the soft logic diagram sheet number and the PI / O (process input / output device) signal specified in the set isolation possible location, the related Soft logic diagram, iso to follow ECWD (development connection diagram) Location part tracking means, data storage means for storing necessary drawing information tracked by the tracking means as target isolation part data, and providing isolation part data created by the storage means to the soft logic isolation device A maintenance work plan support system comprising a data providing means.

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