JP4861600B2 - Regular inspection support equipment for nuclear power plants - Google Patents

Description

The present invention relates to periodic inspection support in a nuclear power plant.

FIG. 1 is an overview diagram related to a conventional periodic inspection. The main points that require periodic inspection are the control rod (6) in the reactor building (2), the measuring device (7), and the reactor pressure vessel (4) containing the nuclear fuel. The double-ended arrows indicate how the signals go and go.
Control of the operation of the nuclear reactor or the like is performed in the adjacent central control room (1). The central control room (1) has a plant integrated control device (3), and there are various operation buttons on the panel. The plant integrated control device (3) sends a signal to a control machine (6) such as a control rod in the reactor building (1) or receives a signal from the measuring device (7) to monitor a reactor operation state. .
At the time of periodic inspection, various periodic inspection devices (8) are brought into the reactor building from the door (9).
Process management, such as the progress of periodic inspections, is carried out by a periodic inspection management computer (11) placed in a building on the reactor power plant site. A large number of LAN personal computers (12) are LAN-connected to the periodic inspection management computer (11).
A regular inspection process for a conventional boiling water reactor is shown in FIG. 2 (Non-Patent Document 1).
Periodic inspections are judged by the auditing body approved by the supervisory body, and then passed or rejected. In detail, as shown in FIG. 3, it is shown as an example (non-patent document 2) of the periodic inspection content description table. It covers a wide variety of areas, such as shipping inspections that check for leaks through the fuel rod hair, disassembly and maintenance of safety valves, operation tests, and diesel engine appearance inspections. The periodic inspection management computer (11) is used to confirm the progress of the periodic inspection.
Page 17 of “The Manual for Periodic Inspection of Nuclear Power Plants”, Japan Thermal Engineering Association. Electric Power Shinposha, Nuclear Power Generation Division "Nuclear Power Handbook '76", p. 360

Recently, various regulations relating to nuclear power plants have changed, and even if the quality under new conditions deteriorates over time, the nuclear power plants can be operated if the required functions and quality can be maintained. However, when defects are detected by periodic inspections, etc., repair work is required, the inspection itself is required to be rigorous and reported to relevant places, and in some cases it has become strict to apply and obtain permission. . It has become important not to perform construction or change or repair parts without permission.
Even if it is an examination by a third party examination organization, the subjectivity of the examiner is included. This is different from the judgment of the nuclear power plant owner. If both sides do not agree, it is possible that power generation will stop for a long time.
The subjectivity of both the examiner and the owner of the nuclear power plant is eliminated as much as possible, and if there is a difference in opinion, it is impossible to generate electricity unless the examination passes. It is necessary to promptly provide such judgment materials (such as supervisory bodies) that can be quickly judged and understood by both parties.

As shown in FIG. 4 as an example, the periodic inspection content description table in the present invention inspects the inspection of the equipment j of the electric work i by attaching the serial number as i for the electric work and the number as j for the equipment. (I, j), which makes it easier to manage. The period diagram showing the progress of the inspection of the electric workpiece shown in FIG. 5 is created with reference to the previous periodic inspection process diagram regarding the electric workpiece. The period diagram indicating the progress of the inspection of the equipment belonging to the electric workpiece i shown in FIG. 6 is created with reference to the previous periodic inspection process diagram regarding the equipment belonging to the electric workpiece i.
FIG. 7 is an overview diagram relating to the periodic inspection support apparatus of the present invention. Thick lines in the figure indicate connections such as wireless and optical cables for information transmission.
The apparatus of the present invention is connected to the new periodic inspection control computer (11 1) of the present invention via a LAN, the camera 1 (121) carried in to monitor the periodic inspection in the central control room (1), and the reactor building (2) Camera 2 (131) and periodic inspection device (8) for monitoring that can be carried in at the time of periodic inspection, and a loading / unloading control device (140) that is installed at the time of periodic inspection, and LAN connection with bracket power key It consists of an S personal computer (114), a LAN connected Si personal computer (115) with a metal power key, and a LAN connected Sij personal computer (116). The externally connected personal computer is an externally connected SS personal computer (113) with a metal power key.
The camera 1 (121) monitors and records a control rod operation confirmation test and the like performed in the plant integrated control device (3) in the central control room (1).
The carry-in / out control device (140) comprises a carry-in / out control computer (141) connected to the new periodic inspection control computer (11) via a LAN, a carry-in / out monitoring camera 3 (142), and a gate (143). The output control computer (141) connects the gate (143) and the camera 3 (142) via LAN, reads the records from the IC tag attached to the periodic inspection-related materials, and compares the weight and shape of the actual product with the gate (143). Open / close control is automatically performed, and the situation is monitored and recorded by the camera 3 (142).
By connecting the periodic inspection device (8), which is carried into the reactor building (2) during the periodic inspection, to the new periodic inspection control computer (11 1) via a LAN, the new periodic inspection control computer (11 1) can be connected to an electric power company and a third party. The inspection standard is controlled by comparing the built-in inspection standard that has been agreed with the general inspection organization and the measured value of the periodic inspection device (8) inspection, and this situation is monitored and recorded by the camera 2 (131).
The periodic inspection is controlled by the above equipment that is connected to the LAN with the software built in the new periodic inspection control computer (11). In particular, the work order is controlled from the time when processing is performed or the time when transmission / reception is performed. If the pre-processing is not completed by checking a prescribed electronic signature or the like, post-processing is restricted and a warning is issued.

Since the electric company and the third-party examination organization have agreed to the computer the examination standards that have been agreed upon, it is difficult for human judgments such as speculation to enter the examination results and examination results.
Since the inspection status is monitored and recorded by the camera, the inspection is less likely to be falsified and becomes evidence later.
The person in charge only needs to perform his / her own duties, and he / she does not have to worry and is less tired and less mistakes. Periodic inspection is performed quickly and reliably, management costs are reduced, and power generation costs are reduced.
In carrying out the inspection work this time, it becomes possible to perform image training by looking at the recording of the previous periodic inspection, thereby reducing work mistakes and improving work efficiency.
Even if the screening side has an error or oversight, the screening time will be inadvertently spent due to damages such as compensation, and the screening will proceed quickly because there will be less demand for pass / fail.
In order to eliminate the possibility that the management of the auditing organization will suffer damage due to excessive auditing by the auditors, the management of the auditing organization will have the right to instantaneous personnel and the final final auditing right to the auditor, and the supervisory authority will manage the auditing organization. It will give a sense of security to the electric utility to be judged.

The in-house supervisor S manages the S PC (1 1 4) and the SS PC (1 1 3). Each electric work i shown in FIG. 5 has a password for locking and unlocking. The in-house supervisor S manages the power sources of the new periodic inspection control computer (11 1), the camera 1 (1 2 1), the camera 2 (1 3 1), and the carry-in / out control device (1 4 0). The in-house supervisor S puts the site manager S i under control by managing the password K i for locking and unlocking the inspection of the electric work i, but as a general rule, it cannot stand on the site. Contact with the external reviewing organization is limited to the in-house supervisor S, and contacts are made from the SS personal computer (1 1 3) via encrypted e-mail.
The site manager Si manages the inspection of the equipment belonging to the electric workpiece i. Management is performed in accordance with a period diagram showing the progress of inspection for each facility j of the electric workpiece i shown in FIG. The site manager Si manages the Si personal computer (115) and can also use the S ij personal computer (1 1 6). The person in charge S ij is put under control by managing the password for locking and unlocking in the inspection (i, j). If the electric workpiece i is not unlocked, the period diagram indicating the progress of the inspection of the equipment j of the electric workpiece i shown in FIG. 5 cannot be opened. If there is a change in the periodic inspection process, it has the authority to modify the process period diagrams in FIGS.
The person in charge S ij inspects the inspection (i, j). The person in charge S ij can use the S ij personal computer (1 1 6). The S ij personal computer (1 1 6) can also be brought into the work site as a wireless connection portable terminal.
Each person will sign or end the work with an electronic signature. The recipient will reply within 5 minutes. Five
If there is no response within minutes, the sender contacts the mobile phone to himself and a permanent person (eg, a security room that constantly monitors the camera). When there is no more, the sender has the authority of the receiver and can contact each place.
The person in charge of periodic inspections is obliged to have a camera-equipped mobile phone that can be connected to the new periodic inspection control computer (11 1) by IP, and in the case of out-of-service or power-off, the new periodic inspection control computer (11 1) is transferred to the security room (2 0 0) An alarm is issued.
The inspector, the in-house supervisor S, the site manager S i and the person in charge S ij will become independent.
8, 9 and 10 are flowcharts. In the figure, the broken line frame represents the process performed by the in-house supervisor S, the long two-dot chain line frame represents the process performed by the site manager Si related to the electric workpiece i, and the solid line frame represents the equipment j of the electric workpiece i. It represents the processing performed by the person in charge S ij involved.
Process 1 (5 0 1) starts periodic inspection.
Process 2 (5 0 2) is a process for the internal supervisor S to start a periodic inspection.
・ In-house supervisor S turns on the power to the SS PC (1 1 3) and S PC (1 1 4) from the bracket key.
・ Send a power activation signal from the S PC (1 1 4) to the new periodic inspection control computer (1 1 1). An activation signal is sent to the camera 1 (1 2 1), the camera 2 (1 3 1), and the carry-in / out control computer (1 4 1). Camera 3 (1 4 2) is automatically activated.
Command the guard room (2 0 0) to monitor the monitor (2 1 0).
・ By the electronic signature of the in-house supervisor S from the S personal computer (1 1 4), the electric work i is obtained from the periodic inspection process diagram shown in the previous figure 5 of the electric work built in the new periodic inspection control computer (11 1). Unlock with password OK i (process period line blue). Change password to Ki and unlock again with Ki.
The above work is carried out on each electric workpiece.
・ Send work start instructions to all site managers simultaneously by e-mail and mobile phone.
Process 3 (5 0 3) is a process for the site manager S i to start the periodic inspection of the electrical work i by receiving the work start instruction from the in-house supervisor S by e-mail and mobile phone. is there.
・ The site manager Si turns on the power to the Si personal computer (1 1 5) from the bracket key.
・ Start periodic inspection of electrical work i from the Si personal computer (1 1 5) with the electronic signature of the site manager Si.
・ Each equipment j is password O from the periodic inspection process diagram shown in the previous figure 6 for equipment belonging to electrical work i
Unlock with K ij (process period line blue). Change the password to K ij and unlock again with K ij.
Convert the process period line from blue to black.
・ Automatic creation of a black line diagram of the process period with the previous periodic inspection start date for each equipment j as zero.
・ Automatic creation of a black line diagram of the process period with the current periodic inspection start date for each equipment j as the current date.
・ Send the work start instruction to all persons under the supervision of the on-site manager Si at the same time by e-mail and mobile phone.
・ (All site managers carry out this work)
In process 4 (5 0 4), the person in charge S ij receives the work start instruction from the site manager S i by e-mail and a mobile phone, thereby inspecting the equipment j of the electric workpiece i (i, j). Start inspection.
-The person in charge S ij starts a periodic inspection (i, j) from the S ij personal computer (1 1 6) by electronic signature.
-Convert black line to red line during the process period under inspection.
・ Begin inspection after digital photography of on-site photographs.
Process 5 (5 0 5) is the inspection of the company in charge S ij
If there is no abnormality, go to Process 6 (5 0 6).
If there is no “abnormality”, go to Process 9 (5 0 9).
Process 6 (5 0 6) is the process of the person in charge S ij when the inspection is “no abnormality”.
The person in charge S ij converts the red line during the process being inspected into a blue dotted line.
・ Send “no abnormality” to the site manager Si and send it by e-mail and mobile phone.
Process 7 (5 0 7) is a process of the site manager Si when the inspection is “no abnormality”.
・ The site manager S i checks “no abnormality” on site, converts the blue dotted line from the S ij personal computer (1 16) to the blue solid line, and locks it with K ij.
-Perform the above operations on all facilities under the control of the site manager Si.
Process 8 (5 0 8) is a process of the site manager Si when all the inspections related to the electric workpiece i are “no abnormality”.
・ After confirming that the process period lines are all blue solid lines, the site manager S i confirms that there is no abnormality in the electrical work i at the site and inspects each site from the S ij personal computer (1 16) An e-mail is sent to the in-house supervisor S about the completion of the inspection of the electric work i together with the comparison result that the difference between the front and back digital field photographs is smaller than the prescribed value.
・ Turn off the power of the Si PC (1 1 5) with the bracket key.
・ Go to Process 2 4 (5 2 4).
Process 9 (5 0 9) is the process of the person in charge S ij when the inspection is “abnormal”.
• The person in charge S ij performs the given emergency process. For example, if there is a misfire, inform the surroundings loudly and at the same time serve as an initial fire extinguisher, and the surrounding person and the discoverer inform the monitor (2 1 0) monitor in the security room (2 0 0) with the mobile phone fire alarm button.
・ After the situation has subsided, send “Abnormal” to the site manager Si.
-Convert the red line during the working process into a red dotted line.
Process 1 0 (5 1 0) is a process of the site manager Si when the inspection is “abnormal”.
・ The site manager S i locks the inspection (i, j) with K ij on the S i personal computer (1 1 5) or S ij personal computer (1 1 6) after confirming the site.
The site manager Si displays an abnormality report memo screen in a predetermined format such as the power plant name, installation location, and output.
・ Inform the person in charge S ij that “Fill the screen” with a mobile phone or e-mail.
In Process 1 1 (5 1 1), the person in charge S ij uses S ij personal computer (1 1 6) to write necessary items such as equipment, date and time, inspection status, etc. on the abnormality report memo screen. Notify i by mobile phone and e-mail.
In Process 1 2 (5 1 2), field manager Si confirms that there are no errors in the abnormal report memo screen, and after electronic signature, informs internal supervisor S by mobile phone and e-mail.
Process 1 3 (5 1 3) is as follows: Internal supervisor S signs an error report memo on S PC (1 14) and then passes from SS PC (1 1 3) to external auditing organization via CD-ROM. Send notes electronically.
Processing 1 4 (5 1 4), site manager S i is the person in charge S ij and new the proceedings in which the study of repair called the officials of manufacturers such as periodic inspection control computer (1 1 1) to the input memory To do.
Process 1 5 (5 1 5) is the result of the examination in Process 1 4 (5 1 4)
If “repair is necessary”, go to processing 2 0 (5 2 0).
If it is not “repair required”, go to Process 1 6 (5 1 6).
Process 1 6 (5 1 6) is a process of the site manager S i when “repair is not necessary”. Site manager Si corrects the title of the abnormal report memo as “Application for Repair Not Required (Draft)” and notifies the in-house supervisor S by mobile phone and e-mail after electronic signature.
Process 1 7 (5 1 7) is the process of the internal supervisor S when “repair is not necessary”.
・ In-house supervisor S digitally signs the “Repair Not Required Application Form (Draft)” on the S PC (1 14) and makes it “Repair Not Required Application Form”.
・ Send electronically from an SS PC (1 1 3) to an external examination organization via CD-ROM. Receive "Repair not accepted" from the reviewing organization.
If “repair required” is received from the auditing organization, the site manager Si is consulted with the auditing organization.
If “repair is necessary”, go to processing 2 1 (5 2 1).
・ Instruct the site manager Si to receive "no repair required" from the S PC (1 1 4) via mobile phone and e-mail, and instruct the inspection to continue.
In the process 18 (5 1 8), the site manager S i transfers “repair not accepted” to the person in charge S ij, unlocks the inspection (i, j) with the password K ij and instructs to continue the inspection.
In process 19 (5 1 9), the person in charge S ij converts the red dotted line into a red line during the process period and continues the inspection.
-Go to process 4 5 0 4).
Process 20 (5 2 0) is a case where “repair is necessary” of process 15 (5 1 5).
Process 2 1 (5 2 1) is a process of the site manager Si when “repair is necessary”. The site manager Si corrects the title of the abnormality report memo as "Application for repair required (draft)" and notifies the internal supervisor S by mobile phone and e-mail after electronic signature.
Process 22 (5 2 2) is a process of the internal supervisor S when “repair is necessary”.
・ In-house supervisor S electronically signs the “repair application (draft)” on the S PC (1 14) and makes it a “repair application”.
・ Send from CD-ROM from SS PC (1 1 3) to reviewing organization. Receive “Repair Application Acceptance” from the certification body.
-E-mail "Repair Application Acceptance" from the S PC (1 1 4) to the site manager Si and instruct to create a repair plan.
・ In-house supervisor S sends a CD-ROM containing a “repair plan” with electronic signatures S ij, S i, and S to the examination body.
・ After receiving "Repair Plan Acceptance" from the inspection body, inform the site manager Si of "Start Repair" via mobile phone and e-mail.
In the case where “repair plan required correction” is received from the inspection body, the site manager Si is consulted with the inspection body. When amended, the revised version shall be the “Repair Plan”.
Process 2 3 (5 2 3) is the site manager S i transfers the “Repair Plan Acceptance” to the person in charge S ij, unlocks the inspection (i, j) with the password K ij and starts “Repair”. Notify by mobile phone and e-mail.
・ After repair is completed, return to Process 4 (5 0 4).
Process 24 (5 2 4) is a process of the internal supervisor S when the inspection of the electric workpiece i in process 8 (5 0 8) is completed.
-After receiving the completion from the site manager S i, the in-house supervisor S confirms the results of the comparison of the on-site photos before and after the inspection, and after electronic signature, locks the inspection of the electrical work i with the password Ki.
-Apply for the witnessed examination of electrical work i from the SS personal computer (1 1 3) to the examination body.
・ (Continue until all electrical work inspection is completed and all process period lines become blue lines)
Process 2 5 (5 2 5) is an witnessed audit by the certification body.
If unsuccessful, internal supervisor S unlocks with password Ki. Return to process 3 (5 0 3).
If it passes, the process proceeds to process 2 6 (5 2 6).
Process 26 (5 26) is the process of the internal supervisor S when it passes the witness examination by the examination body of Process 25 (5 25).
・ In-house supervisor S confirms that the process period line of all electric works is a blue line, and withdraws periodic inspection equipment (8), camera 1 (1 2 1), camera 2 (1 3 1) Check with a photo of a vacuum cleaner on site to confirm that there are no extra items.
-After confirming the material balance of the loading / unloading control computer (1 4 1), digitally sign and send a power off signal.
The camera 3 (1 4 2) is automatically turned off.
-Send an e-mail from the SS PC (1 1 3) to the examination body to confirm the end of the periodic inspection, and apply for a general witness examination.
Process 27 (5 2 7) is a comprehensive witnessed audit by a certification body.
If electric work i is unacceptable, unlock with K i and return to process 3 (5 0 3).
If it passes, proceed to Process 2 8 (5 2 8).
Process 2 8 (5 2 8) Internal supervisor S receives a letter of acceptance from the certification body.
-Send a power-off signal to the new periodic inspection control computer (1 1 1).
・ Turn off the power of the SS PC (1 1 3) and S PC (1 1 4) with the bracket key.
Periodic inspection ends.

Other Example 1

A wide-angle lens that monitors the entire liquid level of the reactor pressure vessel (4) when performing periodic inspection by opening the lid in the reactor pressure vessel (4) that encloses and burns the nuclear fuel in the reactor building (2) A monitoring device comprising one 8mm camera with a reactor and a reactor pressure vessel (4) several regular lens 8mm cameras that monitor the whole liquid level with several units and a recording device. In order to monitor the fall of the foreign matter, the liquid surface ripple is monitored.
It is difficult to confirm the fall of small objects. However, if it is a ripple, it can be confirmed that there was a fallen object because the sign remains large and long. The time and the approximate position of the ripples are identified from the recording of the 8mm camera with a wide-angle lens, and the fallen object can be identified by playing back the recording of the normal lens 8mm camera several seconds before.
During the period when the reactor pressure vessel (4) is not inspected after the reactor pressure vessel (4) is opened, a plastic transparent lid or a reactor pressure vessel is used to prevent falling objects to the reactor pressure vessel (4). Put a transparent cover about 2m high around (4).
Observation of the reactor pressure vessel (4) is performed by remotely operating a self-propelled normal telephoto camera or a self-propelled underwater telephoto camera in order to prevent an object from falling from an inspector's pocket or the like.

Component performance degrades over time. If a given performance can be maintained, it can continue to be used. Periodic inspections must be rigorous according to maintenance standards. If you do it efficiently, the cost will increase. The inspector becomes conservative and shrinks. Since the person in charge only needs to work in accordance with the control of this apparatus, it is unnecessary to take extra care and do not get tired.
Electric power companies have become free from power supply obligations due to the liberalization of electric power and are allowed to pursue profits alone. Currently, electric power companies have a wide range of management including thermal power, nuclear power, wind power generation, power distribution, distributed power supply sales, and telecommunications business. It may be more efficient to become a specialized company that only sells non-nuclear power and be criticized to an anomaly, or an existing nuclear power company to purchase in bulk. By adopting this equipment by a specialized company, there will be no omissions in procedures and communication in equipment management inspection, and efficiency will be improved. By adopting this device with efficient electronic trading features, power generation costs will not increase even if one company has one power plant. Moreover, even if there is a defect in the inspection, it is a defect of the device, and it is less likely to hurt employees because it can be improved with the advice of the external committee. In particular, if the president resigns for each scandal, human resources will be exhausted. It is possible to protect human resources that become scarce as you go upstream.

Overview of conventional regular inspection. Regular inspection process for conventional boiling water reactors. An example of the conventional regular inspection content description table. An example of the regular inspection content description table | surface of this invention. The period diagram which shows the progress of the inspection of an electric workpiece. The period diagram which shows the progress of the inspection of the equipment which belongs to the electric workpiece i. 1 is an overview diagram related to a periodic inspection support device of the present invention. The processing flowchart by the software built in a new type periodic inspection control computer (111). Continuation of FIG. Continuation of FIG.

Explanation of symbols

1 is a central control room.
2 is a reactor building.
3 is a plant integrated control device.
4 is a reactor pressure vessel.
6 is a control machine such as a control rod.
7 is a measuring instrument.
8 is a periodic inspection device.
9 is a door.
11 is a periodic inspection management computer.
12 is a LAN connection personal computer.
13 is an externally connected personal computer.
14 is an e-mail connection personal computer.
111 is a new periodic inspection control computer.
113 is an SS personal computer.
114 is an S personal computer.
115 is a Si personal computer.
116 is a Sij personal computer.
Reference numeral 121 denotes a camera 1.
131 is a camera 2.
140 is a loading / unloading control device.
141 is a carry-in / out control computer.
Reference numeral 142 denotes a camera 3.
143 is a gate.
200 is a security room.
210 is a monitor.
Reference numeral 501 denotes processing 1.
502 is process 2.
Reference numeral 503 denotes process 3.
Reference numeral 504 denotes processing 4.
Reference numeral 505 denotes processing 5.
Reference numeral 506 denotes processing 6.
Reference numeral 507 denotes processing 7.
Reference numeral 508 denotes processing 8.
Reference numeral 509 denotes processing 9.
510 is process 10.
Reference numeral 511 denotes processing 11.
512 is process 12.
Reference numeral 513 denotes processing 13.
Reference numeral 514 denotes processing 14.
Reference numeral 515 denotes processing 15.
Reference numeral 516 denotes processing 16.
Reference numeral 517 denotes processing 17.
Reference numeral 518 denotes processing 18.
Reference numeral 519 denotes processing 19.
Reference numeral 520 denotes processing 20.
Reference numeral 521 denotes processing 21.
Reference numeral 522 denotes processing 22.
Reference numeral 523 denotes processing 23.
Reference numeral 524 denotes processing 24.
Reference numeral 525 denotes processing 25.
Reference numeral 526 denotes processing 26.
Reference numeral 527 denotes processing 27.
Reference numeral 528 denotes processing 28.

Claims (1)

The periodic inspection support device of the nuclear power plant includes a periodic inspection control computer (111), a camera 1 (121) carried into the central control room (1), connected to the periodic inspection control computer (111) by a LAN, and an atom It consists of a camera 2 (131) carried into the furnace building (2), a periodic inspection device (8), a carry-in / out control device (140), and a personal computer with a metal power key.
The carry-in / out control device (140) includes a carry-in / out control computer (141), a camera 3 (142), and a gate (143) connected to the periodic inspection control computer (111) via a LAN. The record is read from the IC tag attached to, and the opening and closing of the gate (143) is controlled and compared with the weight and shape of the actual product, and the situation is monitored and recorded.
The periodic inspection control computer (11 1) has a built-in examination standard that can be said to be normal, and can compare the examination standard with the measurement value of the periodic inspection device (8). 2 (131) can record the status of periodic inspections, and can enter the minutes of examinations regarding repair,
A periodic inspection support device for nuclear power plants, characterized by suppressing inspection errors.

Images