JPH01280298A - Move display system for combustible gas concentration control system - Google Patents

Abstract

PURPOSE:To recognize the progress state of field operation, and to confirm a move procedure and to improve the operability by making a logic decision on processing conditions for carrying-in/out operation by a computer and then outputting a message. CONSTITUTION:An output part 6 selects carrying-out operation and a 1st control part 2 rearranged this information and information on a display part 5 which displays the name of object equipment, a valve, and a system regularly without repetition. Then a processor 1 with a computer software function interprets the carry-out selection signal from the output part 6 and a carry-in signal from an actual site and outputs and inputs information required for the carrying-in/ output operation to and from an auxiliary storage device 4 through a 2nd control part 3, so that the information is displayed on the display part 5. Thus, pieces of necessary information on the start of moving and recovering operation and valve isolation, a guide means for carrying in and out recovery and control equipment, and removing operation are guided and displayed in a central operation chamber continuously as to the operation in the central operation room and site in the real moving operation.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is directed to a combustible gas concentration control device (hereinafter referred to as Fe2) system, which is equipment unique to nuclear power plants. i! ! The present invention relates to a combustible gas concentration control system relocation display system configured to automatically guide and display work procedures when relocating control equipment.

(Prior Art) Some systems of nuclear power plants can be shared by several plants. Conventionally, for Fe8 system, one plant has two
Because the system was installed in a central location, there was no need to move and install equipment from other plants.

However, if it is to be treated as shared equipment, the control equipment will need to be improved to a removable type, and isolation and recovery procedures will be required for relocation.

In operation d, equipment is carried in and out while referring to this isolation/recovery procedure.

(Problems to be Solved by the Invention) The above-described procedure makes it easy for operators working on site to grasp the progress of work. but,
Operators waiting at the central control station (hereinafter referred to as central control) have no means of checking the above procedure. For this reason, it is impossible to judge whether or not the field work is being carried out accurately.

Furthermore, the relocation of control equipment requires emergency work, as the importer wants to do so as quickly as possible.

Therefore, there are concerns about human error during the relocation procedure.

Therefore, there is a need for a system that can check work at the same level at the center and on-site, and that can mechanically grasp the progress of work.

The present invention has been made to satisfy the above-mentioned needs.The present invention has been developed to improve operability so that the progress of field work can be recognized and the relocation procedure can be easily checked using a display output device installed in the central operating room.
Our objective is to provide a C3C3 relocation system.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a method for isolating, relocating, and restoring control equipment in a combustible gas concentration control system of a nuclear power plant from a piping system. A combustible gas concentration control system relocation display system that automatically guides and displays procedures includes guide means for starting relocation and restoration work, valve isolation and restoration, and control equipment removal and import, and information necessary for the relocation. A display output device for processing, a data input/output device, an auxiliary storage device for storing the information, and a 5I! for controlling these devices. Il! 1 device.

(Function) The processing means for outputting and displaying the above information from the storage device is based on a computer software function, which uses a computer to logically determine the processing conditions for loading and unloading, and outputs a message to the operator. conduct.

Isolation and restoration of the system is confirmed by changes in the display color of valves and control equipment displayed in the system, and the progress of the procedure is confirmed by the contents of messages output to the display device and typewriter.

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

In FIG. 1, reference numeral 1 indicates a processing device, 2 indicates a first control section, 3 indicates a second control section, 4 indicates an auxiliary storage device, 5 indicates a display section, 6 indicates an output section, and 7 indicates a printing section. There is. The display unit 5 displays the device name, valve, and system to be guided.

The output unit 6 is an output unit for selecting export, and this information is organized into regular information by the first control unit 2 together with the information on the display unit 5 so that the information does not overlap. Information necessary for carrying out and carrying in is inputted from the auxiliary storage device 4 through the control section 3 by interpreting the selection signal from the exit section 6 and the carry-in signal from the site by the processing device 1, and is displayed on the display section 5.

In other words, in the actual work of relocating the FC3 system, a means is provided to continuously guide and display the work at the central operation and the site to the central operation.

FIG. 2 shows one system of the FC3 system, and the screen configuration includes the main system display on the left half and the guide display on the right half. In this FIG. l:l:-ta15. Recombiner 16. Cooler 14. Through the steam/water separator 13, oxygen m
A simplified system diagram for reducing the hydrogen concentration below the flammability limit and guiding it to the suppression chamber 12 is shown. Reference numbers 18 to 23 indicate remote control valves, and reference numbers 24 to 26 indicate manual valves.

Next, the contents of the guide will be explained with reference to FIG.

Figure 3 is a guide during unloading. LOCA at other plants
If this occurs (101), turn on the FC3 system unload push button (102). FC3 system is not connected (O
If N) is confirmed from the database, the operation will end, but if it is confirmed that the connection is in progress (Yes), (103
) immediately starts displaying the central operation guide (104). The removal procedure at this time is to display a guide for making preparations to prevent unnecessary announcement alarms (hereinafter referred to as ANN) from occurring by relocating the C8 system. By inputting all the operation switches into the computer, it is possible to display the completion judgment.When the central control operation side has completed the unloading operation, the site is contacted (105).From now on, the site situation is recorded on the CRT. This will be confirmed above (106).

The first operation required is to fully close the manual valve.

A message is displayed on the CRT while the valve is closed, and the message is completed when the valve is fully opened. Next, F.C.
It starts when the 3rd system is disconnected, but this is due to the valve drive.
This can be determined by removing the couple connection of the power supply. When all operations are completed, a completion message is printed on the CRT or typewriter and a message is printed on the equipment list 1 that has been carried out to complete the process (108).

The processing related to loading will be explained with reference to the flowchart in FIG.

At the plant where the FC3 system was brought in, there was a loss of coolant accident (
LOCA) has occurred and operators are currently responding to the situation.

Therefore, after a certain period of time after the occurrence of LOCA,
Display is performed by switching the screen to RT (201). The on-site delivery operation display starts when the FC3 system is not connected (203). The timing of the start is determined by the connection of the cable connection explained at the time of carrying out. Further, the switching between the field work and the middle rolling work is performed under the condition that the valve is opened in the procedure explained at the time of carrying out (205). Then, on the central rolling stock side, preparations were made for operating the FC3 system, and when all operations were completed (2
06) , completion message to CRT, typewriter,
The equipment that has been completely delivered is ejected to complete the process (207). Finally, the system is switched to the FC3C3 system, and the series of steps is completed.

The points of procedure switching will be supplementarily explained with reference to FIGS. 5 to 7.

Figure 5 shows that by removing the valve drive power supply cable connector,
A detector failure ANN occurs, but the [C8 detector is not failed. Therefore, the logic is to prevent the occurrence of ANN.

FIG. 6 shows the timing of starting the guide at the time of "carry-in", and is the logic for starting the guide display only when LOCA occurs.

FIG. 7 is a logic diagram showing the state of completion of the final start-up preparation at the import-side plant. When the carry-in operation is completely completed, the FC3 system is displayed, and the FC8 system is put on standby and completed.

[Effects of the Invention] According to the present invention, when relocating the FC3 system to another plant, the central rolling operator can also grasp the work from unloading and loading to completion of the FC3 system standby mode, and this improves monitoring performance. Since the procedure can be supported, operability is improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of an embodiment according to the present invention, Fig. 2 is a partial system diagram of Fe2 displayed with a guide, and Fig. 3 is a flow diagram showing the procedure displayed as a guide in a plant to which the FC3 system is exported. Figure 4 is a flowchart showing the procedure that will be displayed as a guide to the plant where the FC3 system will be brought in. Figure 5 shows how to prevent the occurrence of a detector failure ANN by removing the cable connector of the valve drive power supply during the procedure. Fig. 6 is a logic diagram showing the guide start timing when the FC3 system is brought in during the procedure, and Fig. 7 is a logic diagram showing the guide start timing when the FC3 system is brought in during the procedure.
6) is a logic diagram for displaying the &B system. 1... Processing device 2... First control section 3... Second control section 4... Auxiliary storage device 5... Display section 6... Output section 7... Printing 11. ... Drywell 12 ... Suppression chamber 13 ... Steam-water separator 14 ... Cooler 15 ... Heater 16 ... Recombiner 17 ... Blower 18 to 22 ... Remote control valve 23-25...Manual valve (8733) Agent Patent attorney Yoshiaki Inomata (Idiot)
1 person) Ward 3, Figure 4

Claims (1)

[Claims] Combustible gas concentration control system relocation display that automatically guides and displays the isolation, relocation, and restoration work procedures when the control equipment in the combustible gas concentration control system of a nuclear power plant is isolated from the piping system and relocated or restored. In the system, the relocation/restoration work starts, valve isolation/restoration, control equipment removal/
It has a guide means for carrying in, a display output device for processing information necessary for the relocation, a data input/output device, an auxiliary storage device for storing the information, and a processing device for controlling these devices. A relocation display system for a flammable gas concentration control system.