JP2003248080A - Working dose managing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost working dose managing system, in which a processing time of an i/o area is shortened to eliminate a waiting time at an i/o port, an employee's load can be relieved in view of a processing operation, without association with a large-scale construction. <P>SOLUTION: A working dose managing system comprises a reserving unit having a terminal 10 for a contract enterpriser and a WID 20 or the like, a dose portable case 30 previously recording qualifying information in the case 30, and a dosimeter charging and lending unit 50 lending a dosimeter 40, based on the qualification information. Thus, the communication of data to radiation protection and safety computer 90 at the i area time to a radiation control section E2 is eliminated. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work dose management system for managing entry / exit to and from a radiation control area of a worker who works in a radiation handling facility such as a nuclear power plant and a work dose.

[0002]

2. Description of the Related Art As a system of this type, an entrance / exit control device (ARG) having gate means is installed at the entrance / exit of a radiation control area, and it monitors and controls various radiation-related equipment. It is known that it is connected to a discharge computer online. The discharge pipe computer records the information of all work workers who have completed the worker registration procedure necessary for entering the facility.In the conventional system, the personal information registered at the time of entry and the entry into the radiation control area are recorded. In the area, the personal information sent from the entry / exit management device shall be checked to determine the entry qualification by the discharge computer, and the result of this determination shall be sent from the discharge computer to the entry / exit management device. In this way, the entry of workers into the radiation controlled area is controlled.

[0003] In some cases, the worker is allowed to select the scheduled work subject in the entrance / exit control device because the exposure dose is managed in association with the work subject. If you do not select the work subject to be performed with the entry / exit control device, use the work information input device (WID) installed at the work site to start the work and assign the work subject to the dosimeter carried by each person. It is necessary to enter.

There are the following two types of entry / exit management devices. One is a type that starts processing when a personal information medium such as a dosimeter carried by an employee and an ID card is set in a predetermined part.
It takes about 8 to 15 seconds in total to complete the entry process such as setting cards etc., communicating with the discharge computer, selecting the subject of the work to be performed, etc.

The other is a type in which the processing is started when a personal identification information medium such as an ID card is set, and the dosimeter is lent only to workers who are qualified to enter the area. Similarly, it takes about 8 to 15 seconds to complete the entry process such as setting the ID card, communicating with the discharge computer, selecting the work to be performed, and discharging the dosimeter.

It is essential that any type of entrance / exit management device be connected to a discharge computer online.
The system installation work is inevitable. In addition, when the worker arrives at the radiation controlled area, the entry / exit management device sends the data to the online discharge control computer side, and the discharge control computer executes the entry qualification determination process. Therefore, it is difficult to shorten the processing time, and it takes about 15 seconds per person including the operation of the worker. Therefore, especially in the time zone when the worker is concentrated such as at the beginning of work, A queue may occur in front of the management device.

Further, in the conventional system, as for the exit processing from the radiation controlled area, the worker who has finished the work starts the processing after coming to the radiation controlled area exit (entrance / exit area). It's taking time. That is, the entrance / exit management device reads personal information, integrated dose, etc. from the dosimeter carried by the worker and transmits it to the discharge control computer, and the discharge control computer stores the dose data and determines the exit qualification. By sending this qualification judgment result from the discharge control computer to the entrance / exit control device, the exit from the radiation controlled area is controlled. As in the case of the entrance process, processing time of about 8 to 15 seconds is required, including the operation of the worker.
A queue may occur during the hours when there are many workers, such as at the end of work hours.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to shorten the processing time for entry / exit and eliminate the waiting time at the entrance / exit. In addition, it is possible to reduce the burden on the worker in terms of processing operation, and to provide a low-cost work dose management system that does not involve large-scale construction.

[0009]

In order to solve such a problem, in the invention of claim 1, a reading unit for reading dose information from a dosimeter (40), a memory, and a communication unit capable of wireless communication with the outside. Dosimeter carrying case (30), and a discharge tube computer (90) equipped with a database for recording identification information, work content information and various qualification information of the worker, and at least the worker It has a means for inputting reservation information including identification information and scheduled work information, is connected to a discharge computer on-line, and provides data including the entry qualification information of the worker given by the discharge computer side. Reservation device to write in the dosimeter carrying case (30) in advance
(Terminal for contractor 10, WID20) and multiple dosimeters (40)
It has a storage part for storing the dosimeter in a locked state and a reading part for reading the data recorded in the dosimeter carrying case (30), and unlocks the dosimeter for workers by predetermined conditions ( 40) It consists of a dosimeter charging / renting device (50) installed on the route to the radiation controlled area that enables renting, and the dose is given only to the workers who have the access qualification information "accessible". A total of (40) was rented and allowed to enter the radiation controlled area.

In the invention of claim 1, the third aspect of the invention is provided.
Data including engagement permission information for seed work may be automatically written in the dosimeter carrying case (30) (the invention of claim 2). In the invention of claim 1 above,
When entering the radiation controlled area, the worker
(0) is a portable check device (60) for checking whether or not the dosimeter carrying case (30) is properly mounted, and the dosimeter (40) is used for a certain period of time after renting. First detection means for detecting whether or not the dosimeter (40) is attached to the dosimeter carrying case (30), and a signal from a tag added to the dosimeter carrying case (30) during passage of a worker. Install a portable check device at the entrance of the radiation controlled area, which comprises a second detection means for detecting the presence / absence of an alarm and an alarm generation means for issuing an alarm based on the outputs of the first and second detection means. Is preferred (the invention of claim 3).

Further, the invention of claim 4 is a dosimeter carrying case (30) having a reading unit for reading dose information from the dosimeter (40), a memory, and a communication unit capable of wireless communication with the outside, and the work described above. A discharge pipe computer (90) equipped with a database for recording worker identification information, work content information and various qualification information,
It is installed in front of the exit in the radiation controlled area (E2) and is equipped with a look-ahead device (70) that communicates with the dosimeter carrying case (30) and collects dose information and sends it to the discharge tube calculator. And the data including the withdrawal eligibility determination information and update information executed by the discharge computer based on the above dose information,
It was given to the leaving communication device (80) capable of communicating with the dosimeter carrying case (30) installed at the controlled area exit, and the information recorded in the dosimeter carrying case (30) was rewritten. Characterize.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a work dose management system according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing an outline of a work dose management system according to the present invention. Further, FIG. 2 is a diagram for explaining the flow of the entrance process, and FIG. 3 is a diagram for explaining the flow of the exit process.

As shown in FIG. 1, this work dose management system 100 includes a contractor terminal device 10 provided in a house E1 (contractor station) and a dose installed in a non-controlled area in the facility. Total charging / renting device 50, portable check device 60 provided near the entrance / exit of radiation control area E2, multiple WIDs 20 provided in work area E3 in radiation control area E2, read-ahead device 70, exit area The communication device 80 and the discharge computer 90 are included. The contractor terminal device 10, the leaving communication device 80, and the prefetching device 70 are online connected to the discharge computer 90 via the bus B. The white arrow in FIG. 1 indicates the movement route of the work follower.

(Registration by designated worker) First, the worker is
Using the contractor terminal 10 connected to the discharge computer 90 in the dealer house E1, the procedure for the designated worker registration necessary for entering the facility is completed. Specifically, personal information (name and affiliation), history of radiation protection education, expiration date of health checkup, presence / absence of WBC examination, etc. are entered, and these data are released to the facility side. It is transmitted to the computer 90.

In response to this, the facility collates the above-mentioned data with the records of the expulsion notebook, confirms whether there is an input error, authenticity, etc., and if there is no problem, approves the registration as a worker. To do. Then, the personal identification number (personnel ID) is issued and recorded together with the above data in the database of the discharge computer 90. After the completion of this procedure, the worker can access the discharge computer 90 based on the ID.

The work in the radiation controlled area is divided into a plurality of work types according to the radiation exposure dose, and work in places where the possibility of contamination by radioactive substances is low is defined as Type 3 work. There is. Therefore, when registering this worker,
It is also possible to automatically register the work permission information of the “type 3 work” for all the workers. By doing this, for workers who carry out only Type 3 work without risk,
There is no need to input the work information (subject).

(Admission to the area) The contents of work performed by each worker in the radiation controlled area on that day are often fixed on the day or the day before, and usually the final contents before entering the radiation controlled area. A confirmation meeting (TBM) is being held. The worker uses the contractor's terminal 10 to send reservation information including information (work title) of the scheduled work specified by this TBM to the discharge computer 90. Then, the discharge computer 90 refers to the information of the worker recorded in the database, performs the qualification determination process, and receives the data including the access qualification information from the contractor terminal 10
Send to the side. If it is determined that the work is possible, the data in which the entry qualification information is “enterable” is transmitted to the contractor terminal 10 side.

The worker writes the data transmitted from the discharge computer 90 to the contractor's terminal 10 into the memory of the dosimeter carrying case 30 passed to each person. At this time, the data writing target is not limited to the dosimeter carrying case 30, but may be another recording medium such as an IC card. When a device other than the dosimeter carrying case 30 is used as a recording medium, a communication means between the recording medium and the dosimeter 40 is separately provided.

It is desirable that the information (work title) of the work to be performed can be input by using the WID 20 (work information input device) connected to the terminal device 10. WI installed in this house E1
If D20 is the same as the work information input device installed in the work area E3, which will be described later, the operation procedure is instructed to workers who have no experience in the field without feeling anxiety. Can be convenient.

The worker who has finished writing various data to the dosimeter carrying case 30 moves toward the radiation area E2. (Entry Area) A dosimeter charging / renting apparatus 50 is installed on the way to the radiation controlled area E2. The dosimeter charging / renting device 50 includes a storage unit that stores a plurality of dosimeters 40 in a locked state, and a reading unit (reception unit) for reading the data recorded in the dosimeter carrying case 30. The lock is released under the condition that the access qualification information is "accessible", and the dosimeter 40 is discharged to enable lending.

When a recording medium other than the dosimeter carrying case 30 is used, it is possible to judge the access qualification information by the dosimeter 40 and to generate an alarm in the dosimeter 40 when "do not enter". . At this time, it is not necessary to lock the dosimeter 40 in the dosimeter charging / renting device 50, and any dosimeter 40 can be taken out. In addition,
The dosimeter charging / renting device 50 also has a function of charging the dosimeter 40 in the stored state.

At this dosimeter charging / renting device 50, the worker directs the dosimeter carrying case 30 toward the reading section of the dosimeter charging / renting device 50 and takes out the unlocked dosimeter 40, The dosimeter 40 is attached to the dosimeter carrying case 30. At this time, data is transmitted and received between the dosimeter carrying case 30 and the dosimeter 40, and the dosimeter 4
The alarm set value is written in 0. A recording medium such as an IC card may be used for data communication with the dosimeter 40, and may be used instead of the dosimeter carrying case 30. In this case, since the dosimeter charging / renting device 50 does not lock the dosimeter 40, any dosimeter 40 can be taken out.

Next, the worker is in the radiation control area E2.
The portable check device 60 is installed in front of the entrance. The portable check device 60 is for checking whether or not a worker has the dosimeter 40 in a state where the dosimeter 40 is properly attached to the dosimeter carrying case 30 when entering the radiation controlled area E2. . When a recording medium other than the dosimeter carrying case 30 is used, it is used to check that possession of the recording medium and the dosimeter 40 and mutual communication are established.

In this embodiment, the first step is to detect whether or not the dosimeter 40 is attached to the dosimeter carrying case 30 by the time when the dosimeter 40 is rented out by the dosimeter charging / renting device 50 until a certain time elapses. Based on the outputs of the first detecting means and the second detecting means for detecting the presence or absence of a response signal from the tag added to the dosimeter carrying case 30 while the worker is passing through. And a determination unit that gives a determination signal of whether or not an alarm is generated to the alarm generation means. When a recording medium other than the dosimeter carrying case 30 is used, the first detecting means for detecting whether or not the communication between the dosimeter 40 and the recording medium is established, and the dosimeter 40 or while the worker is passing through The determination is made based on the output of the second detection means for detecting the presence or absence of the response signal from the tag added to the recording medium. The alarm issuing means may be provided in the portable check device 60, or the alarm generator provided in the dosimeter 40 may be used.

Table 1 shows a judgment table of the portable check device 60.

[0026]

[Table 1] (Work Site) The worker who has passed in front of the portable check device 60 performs the work scheduled to be performed in the work area E3 in the radiation control area E2. In addition, when it becomes necessary to perform work other than the “type 3 work”, the WIDs installed in each work place (work place A, work place B, ... N).
20 is used to enter the work subject to be carried into the dosimeter carrying case 30.

As the WID 20 installed in each work place, a known device having a wireless communication section and capable of inputting information by a bar code may be used, but in the present embodiment, a touch panel is provided for each WID 20. An expression display is added. When the dosimeter carrying case 30 is held over the communication section of the WID 20, the work information stored in the dosimeter carrying case 30 is read out and displayed on the screen. The worker can easily input the work subject simply by selecting the corresponding work subject from the displayed work subjects. In addition, the selected work subject, work start time,
Information including the cumulative dose at the start of work is recorded in the dosimeter carrying case 30 as work information. The exposure dose value measured by the dosimeter 40 in this work is also recorded in the dosimeter carrying case 30. (Exit) When the worker finishes the work in the work area E3, he / she approaches the look-ahead device 70 arranged on the way to the entrance / exit area (exit) of the radiation control area E2 and carries the dosimeter. The dose data stored in the case 30 is read. This dose data includes ID, radiation exposure dose equivalent,
It is data such as work time and work subject.

FIG. 4 is a diagram showing an outline of the prefetching device 70. As shown in the figure, the communication unit 31 of the dosimeter carrying case 30 communicates with the reading unit 71 of the prefetching device 70, so that the dose data of the dosimeter carrying case 30 is read into the prefetching device 70 side. The read dose data is processed by the signal processing unit 72 and then transmitted to the discharge pipe computer 90.

On the discharge pipe computer 90 side, the dose data transmitted from the prefetching device 70 is stored in the database. Then, the exposure dose of this time is added to the past exposure dose that has already been managed, and the withdrawal eligibility primary judgment is made as to whether or not this added value exceeds the specified value. The result is sent to the leaving communication device 80. Further, the discharge control computer 90 determines whether or not the next entry into the radiation controlled area E2 is permitted, and changes based on this next entry determination result and the present exposure dose. The update information including the alarm setting value of the work follower is sent to the leaving communication device 90.
Send to.

The worker who has passed through the prefetching device 70 is
It reaches the leaving communication device 80 installed in front of the entrance / exit area (exit) of the radiation controlled area E2. When a worker puts the dosimeter carrying case 30 over the communication part of the leaving communication device 80,
The withdrawal communication device 80 starts the measurement of the body surface contamination, and performs the withdrawal eligibility secondary determination as to whether or not the measurement result exceeds a predetermined value. And this secondary judgment result and discharge pipe computer 9
Based on the withdrawal qualification primary determination result of the worker already transmitted from 0, the withdrawal eligibility determination as to whether or not the withdrawal from the radiation control area E2 is permitted is performed. For workers who are rejected, the judgment will be made again after decontamination.

Further, the exit processing device 80 is the discharge pipe computer 9
All determination results transmitted from 0 and update information such as alarm set values are written in the dosimeter carrying case 30. When another recording medium is used instead of the dosimeter carrying case 30, the determination result and update information are written in the recording medium. After exiting the radiation control area E2, the worker who has completed the processing by the exit processing device 80 removes the dosimeter 40 from the dosimeter carrying case 30, and places the dosimeter in the storage part of the dosimeter charging / renting device 50. 40 is inserted and returned. When a recording medium other than the dosimeter carrying case 30 is used, the recording medium is removed from the dosimeter 40 and returned to the dosimeter charging / renting device 50. In addition, since the latest update information is recorded in the dosimeter carrying case 30 or a recording medium as an alternative thereto, if the radiation management area E2 is temporarily withdrawn due to a break or the like, return to the house E1. It is possible to quickly re-enter the radiation controlled area E2 without operating the terminal.

[0032]

According to the invention of claim 1, a reservation device for writing in advance the data including the on-line qualification information of the worker in the dosimeter carrying case is provided, and the on-line qualification information is "accessible". Since only persons who enter the radiation controlled area are allowed to enter the radiation controlled area, there is no need to send and receive data to and from the discharge control computer when entering the radiation controlled area.
This has the effect of significantly shortening the entry waiting time. In addition, there is no need to connect the dosimeter charging / renting device to the discharge pipe computer online, and since the dosimeter charging / renting device has a function as an entrance / exit management device, installation work is easy. The cost can be reduced.

According to the second aspect of the present invention, since the data including the work permission information of the third type work is automatically written in the dosimeter carrying case, it is necessary to input the work scheduled work information. It will disappear and rational operation will be possible. According to the invention of claim 3, upon entering the radiation controlled area, a portable check device is provided for checking whether or not the worker is properly wearing the dosimeter in the dosimeter carrying case. Therefore, the dose data can be collected more reliably.

According to the invention of claim 4, a look-ahead device is provided in front of the exit in the radiation controlled area, which communicates with the dosimeter carrying case, collects the dose information, and transmits it to the discharge tube computer. Since the data including the information on the withdrawal eligibility determination executed by the management computer and the update information is intended to be given to the withdrawal communication device in advance, there is an effect that the time for the withdrawal processing can be shortened. Further, since the information recorded in the dosimeter carrying case is rewritten, even if the radiation control area E2 is temporarily withdrawn, it is possible to promptly re-enter the radiation control area E2. Become.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a work dose management system according to the present invention.

FIG. 2 is a diagram for explaining a flow of entry processing.

FIG. 3 is a diagram illustrating a flow of a withdrawal process.

FIG. 4 is a perspective view showing an outline of a prefetching device 70.

[Explanation of symbols]

10 ... Terminal for contractor, 20 ... Work information input device (W
ID), 30 ... Dosimeter carrying case, 40 ... Dosimeter, 50
… Dosimeter charging / renting device, 60… Portable check device,
70 ... Look-ahead device, 80 ... Exit communication device, 90 ... Discharge computer, E1 ... Supplier house, E2 ... Radiation control area, E3
... work area, B ... bus, 100 ... work dose management system.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsutomu Kato             1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa             Within Fuji Electric Co., Ltd. (72) Inventor Nobuyoshi Takeuchi             1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa             Within Fuji Electric Co., Ltd. F term (reference) 2G075 CA48 DA08 FA18 FB16 GA15                       GA36                 2G088 AA07

Claims (4)

[Claims] 1. In a work dose management system for managing a work dose of a worker working in the radiation control area to and from the radiation control area, and a work dose, a reading unit for reading dose information from a dosimeter, and a memory. A dosimeter carrying case having a communication unit capable of wireless communication with the outside, a discharge pipe computer having a database for recording identification information of the worker, work content information, and various qualification information, and at least the work It has a means to enter the reservation information including the identification information of the worker and the work to be performed, and is connected to the discharge computer online and contains the entry qualification information of the worker given by the discharge computer side. A reservation device for writing data in the dosimeter carrying case in advance, a storage unit for storing a plurality of dosimeters in a locked state, and recording in the dosimeter carrying case Dosimeter charging / installation on the route to the radiation controlled area that has a reading unit that reads the stored data and enables the rental of dosimeters to workers by releasing the lock under certain conditions. A work-dose management system comprising a lending device, wherein the dosimeter is lent only to the workers who have the access qualification information "accessible", and the entrance to the radiation control area is permitted. system. 2. The work dose management system according to claim 1, wherein the data including the work permission information of the third type work is automatically written in the dosimeter carrying case. 3. A portable check device for checking whether or not a worker is carrying a dosimeter in a carrying case of a dosimeter when entering the radiation controlled area after the dosimeter is lent. A first detection means for detecting whether or not the dosimeter is attached to the dosimeter carrying case until a certain time has passed, and a signal from a tag added to the dosimeter carrying case during passage of a worker. A portable checking device comprising a second detecting means for detecting the presence or absence of an alarm and an alarm generating means for generating an alarm based on the outputs of the first and second detecting means is installed at the entrance of the radiation controlled area. The working dose management system according to claim 1, wherein: 4. A work dose management system for managing entry and exit of a worker who works in a radiation controlled area into and out of the radiation controlled area, and a work dose management system, a reading unit for reading dose information from a dosimeter, and a memory. , A dosimeter carrying case having a communication section capable of wireless communication with the outside, a discharge tube calculator equipped with a database for recording the identification information of the worker, work content information and various qualification information, and a radiation controlled area In addition to being installed in front of the exit inside, it is equipped with a look-ahead device that communicates with the dosimeter carrying case and collects dose information and sends it to the discharge tube calculator. The data including the information on the executed exit qualification judgment and the updated information is given to the exit communication device capable of communicating with the dosimeter carrying case installed at the exit of the controlled area, and the dosimeter carrying case is set. Working dose control system being characterized in that so as to rewrite the information recorded on the.