JP2000137079A - Individual exposure dose control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an operator to easily and surely find the equivalent of exposure dose and remaining working hours of the operator during operations in a radiation controlled area. SOLUTION: This system has a large display device 6 which makes wireless communications with a wireless communications type individual warning dosimeter 1a and which, when either the equivalent of the exposure dose of an operator 5 carrying the dosimeter 1a or remaining working hours of the operator 5 or both have reached set levels, displays at least the name of the operator 5 and the numerical value reaching the set level, to let the operator 5 working in a working area 7 know that condition by viewing. An alarm device using voices may be effective in place of the large display device 6, and a more reliable system can be obtained if alarm means using voices are added to the large display device 6 to use both the display and the voices.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal exposure dose management system for managing the radiation exposure dose of a worker working in a radiation control area (hereinafter, abbreviated as a control area) such as a nuclear power plant.

[0002]

2. Description of the Related Art Conventional methods for managing individual exposure doses of workers working in a controlled area are as follows.

FIG. 5 is a block diagram for explaining a method of managing a personal exposure dose currently being implemented. Workers are required to enter a personal alarm dosimeter (APD below) at the entrance of the controlled area.
1) and inserts it into the entry / exit area management device 2. The entry / exit area management device 2 corresponds to the entry information such as the radiation dose equivalent value (hereinafter abbreviated as the dose equivalent value) to which the worker has already been exposed and the allowable dose equivalent value calculated from the information. The setting level to be set is received from the central computer 3 which is a management computer and input to the APD 1. A worker carries the APD 1 and enters a management area to perform a predetermined operation. The APD 1 being carried measures and stores the dose equivalent value during this time, and issues an alarm when the dose equivalent value reaches a set level. At the time of departure, the worker also carries the APD 1 carried by the entry / exit management device 2
Insert The entrance / exit area management device 2 reads personal information such as an exposure dose equivalent value exposed during work in the management area from the APD 1 and transmits the information to the central computer 3. The worker is A
Leave PD1 with PD1.

If the worker wants to know the dose equivalent value up to that point while working in the controlled area,
It is necessary to take out the carried APD 1 from a pocket or the like and confirm the numerical value by displaying the exposure dose equivalent value.

[0005] In such exposure dose management, only an alarm is issued when the cumulative dose equivalent value reaches a set level during operation, and the information obtained is limited from the time of entry to the time of exit. It is only the total dose equivalent value obtained. Therefore, in the case of work in a place having a high radiation dose rate that needs to be managed in real time, only collective management can be performed, and the breakdown of the dose equivalent value of each work cannot be grasped.

FIG. 6 is a block diagram showing a configuration of an exposure dose control apparatus disclosed in Japanese Patent Application Laid-Open No. 59-126980. This exposure dose control device is a radio communication type APD1a, a plurality of antennas 411, 421, etc. arranged in a specific control area and individually connected to the control area or a non-control area (non-control area in FIG. 6). And a central computer 3a connected to the transceivers 41, 42 and the like.

[0007] When working in a specific management area, a worker carries the wireless communication type APD1a. This APD1a
Wirelessly transmits the measured dose equivalent value to the central computer 3a in real time via an antenna 411 or the like disposed near the device and a transceiver 41 or the like connected to the antenna 411 or the like. The central computer 3a computes the exposure dose equivalent value data, and transmits the computation result and necessary alarm signals to the antenna 41a.
It transmits to the wireless communication type APD1a via 1 or the like. The central computer 3a can also determine the work position of the worker by determining the signal from which antenna. According to the radiation dose management device, the radiation dose equivalent value of each worker can be managed in real time, and the breakdown of the radiation dose equivalent value for each work can be grasped.

[0008] However, if a worker working in the control area wants to know the exposure dose equivalent value up to that point during the work, take out the carried APD1a from a pocket or the like and check it. It is necessary to personally carry an external display with a built-in reading means and display it on the external display.

[0009] In the personal radiation dose management system according to the prior art described above, the worker who is working in the control area can know the exposure equivalent value during the work because the APD 1a which is carried by the worker. Is taken out of a pocket or the like and checked, or in the case of a wireless communication system, it is displayed on an external display device carried for personal use.
For this reason, when the worker checks the dose equivalent value, it is necessary to suspend the work, and there is a margin whether the worker is approaching the set level set to, for example, 90% of the allowable dose equivalent value. It is difficult to check if there is any without interrupting the work.

[0010] Also, with regard to the working time of the work in the control area, a set level of an alarm for the remaining work time is set in consideration of the time required for leaving, and the remaining work time reaches the set level. Then it is required to issue an alarm.

Further, in the case of a noisy environment, the APD
There is a risk of overlooking the warning sound emitted by 1 or 1a.
It is necessary to have a certain level to generate a sufficiently loud alarm sound without overlooking it.
It is incompatible with miniaturization and emitting a sufficiently loud alarm sound.

[0012]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art dose management, and to provide one or both of the dose equivalent value of the worker and the remaining time of the work. Has reached a reference value (described as a setting level in the prior art), the name of the worker and the corresponding numerical value can be easily and reliably notified to the worker, and In the case of a worker whose numerical value does not reach the standard value, it is possible to easily and surely confirm the numerical value according to the worker's request, and furthermore, it is possible to reduce the size of the APD. Is to provide a system.

[0013]

According to the present invention, there is provided an APD for measuring the radiation dose exposed by a worker working in a controlled area in a managed area, the dose equivalent value of the exposed radiation, Exposure management device that sends and receives personal data such as ID number and dose equivalent value to and from the APD when entering and exiting a controlled area, and personal exposure managed using a central computer that centrally manages personal data In the dose management system, the APD is a wireless communication type APD, and by performing wireless communication with the wireless communication type APD, an ID number and a dose equivalent value of a worker carrying the APD are read, and the dose equivalent is read. The time required for the value to be equal to or greater than the reference value or for the remaining work time to depart (reference value)
In either case or both cases, at least the name of the worker and the numerical value of the dose equivalent value and the remaining work time corresponding to the above case are visually inspected from the work position or a position close thereto. There is provided a display device for displaying the image in a size as large as possible (the invention of claim 1).

In the case where the dose equivalent value is equal to or higher than the reference value or the remaining work time is within the time required for retreating, or in both cases, the name of the worker and at least the corresponding numerical value are changed. It is displayed in a size that can be seen from the work position or a position close to it, so that the worker, the worker working together, and the worker working in the same work area know the state. It is possible for other workers to inform the person if the person does not notice.

[0015] Further, an APD for measuring the radiation dose exposed by a worker working in the control area in the control area, a dose equivalent of the exposed radiation, and an APD when the worker enters and leaves the control area. In an entry / exit area management device that sends and receives personal data such as an ID number and an exposure equivalent value to and from an APD, and in a personal exposure dose management system that uses a central computer or the like that manages personal data, the APD uses a wireless communication type APD.
The access control device is provided with a means for wirelessly communicating with the wireless communication type APD, and the wireless communication means uses the ID number and the dose equivalent value of the worker carrying the APD. Is read and the dose equivalent value is above the reference value and / or the remaining work time is within the time required for regression, or both,
At least a display device is provided that displays the name of the worker and the numerical value corresponding to the above-mentioned case among the dose equivalent value and the remaining work time from the work position or a position close to the work position. (Invention of claim 2).

According to the present invention, the APD communicates with the access control device by radio, and, similarly to the first aspect of the present invention, it is necessary for the exposure equivalent value to be equal to or more than the reference value or for the remaining working time to be reduced. In either case or within both hours, at least the name of the worker and the corresponding value of the dose equivalent value and the remaining work time from the work position or a position near the work position It is displayed in a size that can be seen, so that the worker, the worker working together, and the worker working in the same work area can know the state, and Even if you do not notice, you will be able to be informed to the person from other workers. In the present invention, since the wireless communication is performed with the entry / exit management device, the display device does not need the wireless communication function.

According to the first or second aspect of the present invention, a worker working in the control area requests that the display device display his or her dose equivalent value and the remaining work time. A display requesting means.
Invention).

Since the display request means is provided, the worker can display and confirm his / her dose equivalent value and the remaining work time on the display device by the means.

In the invention of claim 3, the display request means is a worker entering a predetermined area near the display device of the worker (the invention of claim 4).

When the worker approaches the display device,
The dose equivalent value of the worker and the remaining work time are displayed on the display device, so the worker who wants to check the dose equivalent value and the remaining work time can easily obtain the values just by approaching the specified area. And reliably.

Further, the radiation dose that the worker working in the radiation control area has been exposed in the radiation control area is
A personal alarm dosimeter that measures the dose equivalent value of the exposed radiation, and a personal alarm dosimeter that exchanges personal data such as ID numbers and radiation dose equivalent values when workers enter and leave the controlled area. In a personal exposure dose management system that manages using a retreat management device and a central computer that centrally manages personal data, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the wireless communication personal alarm dosimeter is used. By reading the ID number and radiation dose equivalent value of the worker carrying the personal alarm dosimeter by wireless communication, the work time when the radiation dose equivalent value is equal to or greater than the reference value or remains At least one of the time required for the operation, or at least both of the name of the worker, the radiation dose equivalent value and the remaining work time. Appropriate alarm device for informing by sound and numerical values are provided (the invention of claim 5).

If the radiation exposure dose equivalent value is equal to or greater than the reference value or the remaining work time is within the time required for retreat, or both, at least the name of the worker Since the radiation exposure dose equivalent value and the numerical value corresponding to the above case of the remaining work time are notified by a sound from the alarm device, the relevant worker or a worker working together, A worker working in the same work area hears the voice alarm, and if another person misses the voice alert, the worker can be notified by another worker. Moreover, in this case, it is not necessary to provide the APD with a warning means.

[0023] Furthermore, a personal alarm dosimeter for measuring the radiation dose exposed by the worker working in the radiation control area in the radiation control area and the dose equivalent value of the exposed radiation; An individual who manages personal data such as an ID number and radiation dose equivalent value with a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data. In the radiation dose management system, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the access control device is provided with a means for wireless communication with the wireless communication personal alarm dosimeter. By means, the ID number and radiation exposure equivalent of the worker carrying the personal alarm dosimeter are read, and the radiation exposure equivalent is equal to or greater than the reference value or remains. If the time is either within the time required to Shisaiki, or if both, at least,
An alarm device is provided to notify by voice the name of the worker and the numerical value corresponding to the above-mentioned case among the radiation exposure dose equivalent value and the remaining work time (the invention of claim 6).

According to the present invention, the APD communicates wirelessly with the entrance / exit area management device, and, similarly to the invention of claim 5, the APD required for the exposure time equivalent value to be equal to or more than the reference value or for the remaining working time to elapse. In either case or within both hours, at least the name of the worker and the corresponding value of the radiation exposure dose equivalent value and the remaining work time in the above case shall be spoken by the alarm device. Will be informed
Applicable workers and workers working together,
Further, a worker working in the same work area hears the voice alert, and even if the worker misses the voice alert, the worker can be notified by another worker. Moreover, in this case, it is not necessary to provide the APD with a warning means.

[0025] In the first or second aspect of the present invention, the display device may be configured such that the radiation exposure dose equivalent value of the worker is equal to or more than a reference value or the remaining work time is within a time required for retreating. In either case, or in both cases, at least an audio output unit that notifies by sound the name of the worker and the numerical value corresponding to the above-mentioned case of the radiation exposure dose equivalent value and the remaining work time. (Invention of claim 7).

Since the display device and the alarm device are used together,
The alert notification to the relevant worker becomes more reliable, and in this case, it is not necessary to provide the APD with an alarm means.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a personal exposure dose management system according to the present invention will be described using an embodiment. It is to be noted that the same reference numerals are used for portions having the same functions as those of the conventional technology.

[First Embodiment] FIG. 1 is a conceptual diagram showing the configuration of a first embodiment of the personal exposure dose management system according to the present invention.

The worker 5 borrows the wireless communication type APD 1a in the non-managed area and enters the managed area through the access control device 2 provided at the boundary between the unmanaged area and the managed area. At this time, the access control device 2 is controlled by wireless communication.
The personal information such as the exposure dose equivalent value is input to the APD 1a.

The worker 5 carrying the APD 1a to which the personal information has been input goes to the designated work area 7 and executes the designated work. In this work area 7, one or both of the exposure dose equivalent value and the remaining work time of the worker are communicated with the APD 1a of all the workers working in the work area 7 one by one. A large display device 6 is provided for determining whether or not the value has been reached, and displaying the value when the value has been reached. Although not shown, the large-sized display device 6 is connected to a central computer, and the above-mentioned display is executed by personal data, a calculation function, and a judgment function of the central computer.

Hereinafter, the above display will be described in more detail.

The large display device 6 is provided by the worker 5
By wirelessly communicating with the PD1a, the ID number and the real-time dose equivalent value of the worker 5 carrying the APD1a are read and transmitted to the central computer. Since the worker 5 is specified by the ID number,
The central computer determines whether or not the transmitted dose equivalent value has reached a reference value which is an alarm level of the specified worker 5.
The name corresponding to the number and the exposure equivalent value are displayed on the large display device 6. In addition, the central computer sends the transmitted I
The entry time of the worker 5 is read from the D number, the remaining work time is calculated by comparison with the current time, and it is determined whether or not it is within a time required for leaving (also referred to as a reference value). It is determined that the remaining work time is displayed on the large-sized display device 6 when the difference is within the reference value.

When one or both of the exposure dose equivalent value and the remaining work time have reached the reference value, the name of the worker 5 and the numerical value reaching the reference value are displayed in red. That the alarm level has been reached. Numerical values that have not reached the reference value are displayed in green.

In FIG. 1, the worker whose exposure dose equivalent value has reached the reference value is indicated by 5r, and the worker 5r
Indicates the APD carried by 1ar, the worker whose remaining work time has reached the reference value is indicated by 5t, and the APD carried by the worker 5t is indicated by 1at.

Further, the worker 5a who wants to check the dose equivalent and the remaining work time is required to be in a predetermined area on the front of the large display device 6.
By entering the area 71, it is possible to display the own exposure equivalent value and the remaining work time on the large display device 6.
In this display, the large display device 6 detects that the APD 1aa carried by the worker 5a is within the predetermined area 71,
The APD 1aa and the large-sized display device 6 wirelessly communicate with each other, and the ID number and the exposure equivalent value of the worker 5a are read out.

FIG. 2 is a diagram showing a display example of such a display device.

The reference value of the dose equivalent value is often set to 90% of the allowable dose equivalent value. The allowable dose equivalent value varies depending on various situations of the worker 5 at that time, but is generally about 0.3 mSv.
Here, the allowable dose equivalent value is 0.3 mSv, and therefore, the reference value of the dose equivalent value is 0.27 mSv. In addition, the reference value of the remaining work time is set to 30 minutes, which is the time required for leaving.

In the case of Mr. Fujitaro who is a worker 5r whose dose equivalent value has reached the reference value, his name and the dose equivalent value are displayed in red on the large display device 6,
The remaining work time is displayed in green. In addition, in the case of Mr. Hanako Fuji, who is 5r and 5t, both the exposure dose equivalent value and the remaining work time have reached the reference values, the name, the dose equivalent value, and the remaining work time are All are displayed in red. Furthermore, in the case of Mr. Fuji Jiro who is a worker 5a who has entered the predetermined area 71 in order to check his own dose equivalent value and the remaining work time, his name, dose equivalent value, remaining work time and Is displayed in green.

In this manner, the dose equivalent value and the remaining work time of the worker 5 working in the management area are managed, and when one or both of them reach the reference value, that is, the alarm level Is reached, an alarm is issued from the APD 1ar or 1at, and at the same time, the name and the numerical value reaching the reference value are displayed by the large display device 6 provided for each work area 7.
All the workers 5, 5r, 5t and 5a working in the work area 7 are displayed in a state where they can be confirmed. Even if the worker does not notice, the other worker notices and informs the worker. Contact can be made, and the worker who has reached the reference value can easily and surely confirm that. In FIG. 1, only one large display device 6 is installed. However, depending on the situation of the work area 7, a plurality of large display devices 6 are required so that the work position can be confirmed. Sometimes it becomes.

In this embodiment, as a means for confirming the exposure dose equivalent value and the remaining work time, the user enters the predetermined area 71. However, an external push button switch provided on the APD 1a, etc. Can be adopted. In any case, with such a display requesting means, it is possible to easily and surely confirm one's own dose equivalent value and the remaining work time, and easily and surely grasp one's current situation. Can be.

[Second Embodiment] FIG. 3 is a conceptual diagram showing the configuration of the second embodiment.

This embodiment is different from the first embodiment in that
Having an access control device 2a capable of wireless communication with the wireless communication type APD 1a in the work area 7a,
The large display device 6a does not have a wireless communication function.

Since the work area 7a has the access control device 2a, the access control device 2a communicates with the APD 1a by radio, and the ID number and the dose equivalent value of each worker 5 etc. Is read, and the central computer determines whether or not each reference value has been reached, and displays the result on the large-sized display device 6a.

The function is exactly the same as in the first embodiment,
The number of components can be reduced as a whole system by using the wireless communication function of the existing access control device 2a.

In the above embodiment, the large-sized display device 6 or 6a has been described as a display device. However, any display device can be used as long as the display can be read from anywhere in the work area 7 or 7a. Will not need to be explained.

In the above embodiment, APD1a
The ID number and the dose equivalent value are read out from the CPU, and all calculations and determinations are executed by the central computer. However, the APD 1a stores more information, for example, the entry time and the reference value, and displays the information on the display device. It is also possible to provide a function for calculation and determination.

[Third Embodiment] FIG. 4 is a conceptual diagram showing the configuration of the third embodiment.

In this embodiment, an alarm means by sound is added to the function of the large-sized display device 6 of the first embodiment, and a plurality of speakers 81 and the like are used to notify that the reference value has been reached. I have.

More specifically, the large display device 6b
Wirelessly communicates with the APD 1a of the worker 5 to read the ID number and the real-time dose equivalent value of the worker 5 carrying the APD 1a and transmit them to the central computer. Since the worker 5 is specified by the ID number, the central computer determines whether or not the transmitted dose equivalent value has reached the reference value which is the alarm level of the specified worker 5, If the reference value has been reached, the name corresponding to the ID number and the exposure dose equivalent value are displayed on the large display device 6b. Further, the central computer reads the entry time of the worker 5 from the transmitted ID number, calculates the remaining work time by comparing with the current time, and calculates the time required for leaving (also referred to as a reference value). )
It is determined whether it is within the reference value, and if it is within the reference value, the remaining work time is displayed on the large display device 6b. The functions up to this point are the same as in the first embodiment.

The large display device 6b has the above functions,
A speaker 81 is provided as a sound output unit, which has a function of notifying by sound the dose equivalent value and the remaining work time that have reached the reference value to be displayed, in association with the name of the worker.
For example, the information is broadcast to a work area where the worker is working, and necessary operations are instructed. According to the voice, the information is instantly notified to the worker. The voice output is output by a synthesized voice, and the name of the worker is continuously called in order to surely inform the worker.

The position and number of the speakers 81 and the like are adjusted in accordance with the size of the work area and the noise generation state so that the notification can be made surely. If only one can be notified to the entire work area, only one device can be used. FIG. 4 shows an example in which five devices are installed at the center of four sides and the center of the room.

Further, since the position of the worker can be grasped from the state of wireless communication, the speaker 81 and the like can be selectively driven according to the position of the worker, and the volume can be adjusted. Is also effective.

Similarly, it is effective to provide the large-sized display device 6a of the second embodiment with a function of notifying by a similar sound.

In addition to the above-described system in which the display device 6 and the like are provided with an alarm function by voice output, a system in which the display device is replaced with a voice output alarm device is also effective. In the case of alarm notification by voice output, it is not necessary to provide the APD 1a with an alarm means.
This type of system is very effective for reducing the size of the PD.

[0055]

According to the present invention, an APD for measuring a radiation dose exposed by a worker working in a control area in the control area, and a dose equivalent value of the exposed radiation;
When an employee enters or exits a controlled area, the information is managed using an entry / exit area management device that exchanges personal data such as an ID number and an exposure equivalent value with the APD, and a central computer that manages the personal data. In the personal dose management system, APD
Is a wireless communication type APD, and reads the ID number and the dose equivalent value of the worker carrying the APD by wirelessly communicating with the wireless communication type APD. If at least one of the remaining work hours is less than the time required to leave, or both, at least the name of the worker,
A display device is provided to display the exposure dose equivalent value and the numerical value corresponding to the above-mentioned case in the above-mentioned case from the work position or a position close to the work position, so that the worker or the worker can work together. Working workers,
Further, a worker who is working in the same work area can visually recognize the state, and even if the worker does not notice, the worker can be notified by another worker.

Therefore, even in a noisy work area, if at least one of the dose equivalent value of the worker and the remaining time of the work has reached the reference value, at least the name of the worker is required. And a corresponding numerical value can be provided to the worker easily and surely by visual observation from the work position, thereby providing a personal exposure dose management system (the invention of claim 1).

Also, an APD for measuring a radiation dose exposed by a worker working in the management area in the management area, a dose equivalent of the exposed radiation, and an APD when the worker enters and leaves the management area. In an entry / exit area management device that sends and receives personal data such as an ID number and an exposure equivalent value to and from an APD, and in a personal exposure dose management system that uses a central computer or the like that manages personal data, the APD uses a wireless communication type APD.
The access control device is provided with means for wirelessly communicating with the wireless communication type APD, and the wireless communication means uses the ID number of the worker carrying the APD, the exposure dose equivalent value, and the like. Is read and the dose equivalent value is above the reference value and / or the remaining work time is within the time required for regression, or both,
At least a display device is provided that displays the name of the worker and the numerical value corresponding to the above-mentioned case among the dose equivalent value and the remaining work time from the work position or a position close to the work position. Therefore, the same function as the first aspect of the present invention can be realized by a display device having no wireless communication function.

Therefore, even in a noisy work area, if one or both of the dose equivalent value of the worker and the remaining time of the work has reached the reference value, at least the name of the worker is required. And a corresponding numerical value can be provided to the worker easily and reliably by visual observation from the work position, and a personal exposure dose management system with a simpler configuration can be provided (the invention according to claim 2). ).

According to the first or second aspect of the present invention, a worker working in the control area requests that the display device display his or her dose equivalent value and the remaining work time. Since the display request means is provided, the worker can display his / her own exposure dose equivalent value and the remaining work time on the display device and confirm it.

Therefore, when the dose equivalent value of the worker and the remaining time of the work have reached the reference values, at least the name of the worker and the corresponding numerical value are given to the worker at the work position. In the case of a worker who can easily and surely be notified by visual inspection from those who have not reached the standard value, those figures can be reported to the worker according to the worker's request. (A third aspect of the present invention).

According to the third aspect of the present invention, since the display request means is an entry of a worker into a predetermined area near the display device, the worker who wants to check the dose equivalent value and the remaining work time is required. Can be easily and reliably confirmed by simply approaching a predetermined area.

Therefore, when the dose equivalent value of the worker and the remaining time of the work have reached the reference values, at least the name of the worker and the corresponding numerical value are given to the worker at the work position. In the case of a worker whose numerical value does not reach the reference value, the numerical value can be easily and reliably notified by visual observation from (A fourth aspect of the present invention).

Further, the radiation dose exposed by the worker working in the radiation control area in the radiation control area is
A personal alarm dosimeter that measures the dose equivalent value of the exposed radiation, and a personal alarm dosimeter that exchanges personal data such as ID numbers and radiation dose equivalent values when workers enter and leave the controlled area. In a personal exposure dose management system that manages using a retreat management device and a central computer that centrally manages personal data, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the wireless communication personal alarm dosimeter is used. By reading the ID number and radiation dose equivalent value of the worker carrying the personal alarm dosimeter by wireless communication, the work time when the radiation dose equivalent value is equal to or greater than the reference value or remains At least one of the time required for the operation, or at least both of the name of the worker, the radiation dose equivalent value and the remaining work time. A warning device is provided to notify the user of the relevant numerical value by voice, so that the relevant worker, the worker working together, and the worker working in the same work area can hear the sound. When an alert is heard and another person misses the alert, another worker can notify the person. Moreover, in this case, it is not necessary to provide the APD with a warning means.

Therefore, it is possible to easily and surely inform the worker who is to be warned of the situation.
It is possible to provide a personal exposure dose management system capable of miniaturizing a PD (the invention of claim 5).

Further, a personal alarm dosimeter for measuring the radiation dose exposed by the worker working in the radiation control area in the radiation control area and the dose equivalent value of the exposed radiation, An individual who manages personal data such as an ID number and radiation dose equivalent value with a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data. In the radiation dose management system, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the access control device is provided with a means for wireless communication with the wireless communication personal alarm dosimeter. By means, the ID number and radiation exposure equivalent of the worker carrying the personal alarm dosimeter are read, and the radiation exposure equivalent is equal to or greater than the reference value or remains. If the time is either within the time required to Shisaiki, or if both, at least,
An alarm device is provided to notify by voice the name of the worker and the corresponding value of the exposure dose equivalent value and the remaining work time in the above case. Workers who are working in the same work area, as well as those who are working in the same work area, can hear the sound alert so that other workers can notify the person if they miss it. become. Moreover, in this case, it is not necessary to provide the APD with a warning means.

Therefore, it is possible to provide a personal radiation dose management system capable of easily and surely notifying the worker who is to be alerted of the situation and further reducing the size of the APD. ).

According to the first or second aspect of the present invention, the display device may be configured such that the radiation exposure dose equivalent value of the worker is equal to or more than the reference value or the remaining work time is within a time required for the regression of the working time. In either case, or in both cases, at least a voice output unit for notifying by voice the name of the worker and the numerical value corresponding to the above-mentioned case of the dose equivalent value and the remaining work time is provided. Therefore, the alarm notification to the relevant worker is more reliable, and in this case, it is not necessary to provide the APD with an alarm means.

Therefore, it is possible to provide a personal radiation dose management system that allows a worker to be alerted to confirm the situation easily and more reliably, and that can reduce the size of the APD. invention).

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing the configuration of a first embodiment of a personal exposure dose management system according to the present invention.

FIG. 2 is a diagram showing a display example of a display device in the embodiment.

FIG. 3 is a conceptual diagram showing the configuration of a second embodiment.

FIG. 4 is a conceptual diagram showing the configuration of a third embodiment.

FIG. 5 is a personal exposure dose management system 1 according to the related art.
Block diagram showing example configuration

FIG. 6 is a block diagram showing a configuration of another conventional example.

[Explanation of symbols]

 1 Personal alarm dosimeter 1a, 1aa, 1ar, 1at Wireless communication personal alarm dosimeter 2, 2a Access control device 3, 3a Central computer 41, 42, 43 Transceiver 411, 412, 413 Antenna 5, 5a, 5r , 5t Worker 6, 6a, 6b Large display device 7, 7a Work area 71 Predefined area 81, 82, 83, 84, 85 Speaker

Claims (7)

[Claims] 1. A personal alarm dosimeter for measuring the radiation dose exposed by a worker working in a radiation control area in the radiation control area, and a dose equivalent value of the exposed radiation; Personal exposure management using an entry / exit management device that sends and receives personal data such as ID numbers and radiation exposure dose equivalent values to and from a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data In the dose management system, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the ID number of the worker who carries the personal alarm dosimeter by wireless communication with the wireless communication personal alarm dosimeter. Read the radiation dose equivalent value, and if the radiation dose equivalent value is above the reference value or the remaining work time is within the time required for retirement, or both In such a case, at least a display device that displays the name of the worker and the numerical value corresponding to the above-described case of the radiation exposure dose equivalent value and the remaining work time from the work position or a position close thereto is visible. An individual dose management system, which is provided. 2. A personal alarm dosimeter for measuring a radiation dose exposed by a worker working in the radiation control area in the radiation control area and a dose equivalent value of the exposed radiation; Personal exposure management using an entry / exit management device that sends and receives personal data such as ID numbers and radiation exposure dose equivalent values to and from a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data In the dose management system, the personal alarm dosimeter is a radio communication type personal alarm dosimeter, and the access control device is provided with a means for radio communication with the radio communication type personal alarm dosimeter. The ID number and radiation exposure equivalent value of the worker carrying the personal alarm dosimeter are read, and the work time when the radiation exposure equivalent value is equal to or greater than the reference value or remains. At least one of the time required to leave the area or both, and at least the name of the worker and the corresponding value of the radiation exposure equivalent value and the remaining work time. A personal exposure dose management system, comprising: a display device for displaying an image in a size visible from a work position or a position close to the work position. 3. A display device for requesting that a worker working in the radiation control area display his or her radiation exposure dose equivalent value and the remaining work time on the display device. The personal exposure dose management system according to claim 1 or 2, wherein 4. The display request means according to claim 3, wherein said display request means detects an entry of a worker into a predetermined area near said display device, and determines that there is a display request based on said detection.
An individual dose management system according to item 1. 5. A personal alarm dosimeter for measuring a radiation dose exposed by a worker working in the radiation control area in the radiation control area, a dose equivalent value of the exposed radiation, and a worker Personal exposure management using an entry / exit management device that sends and receives personal data such as ID numbers and radiation exposure dose equivalent values to and from a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data In the dose management system, the personal alarm dosimeter is a wireless communication personal alarm dosimeter, and the ID number of the worker who carries the personal alarm dosimeter by wireless communication with the wireless communication personal alarm dosimeter. Read the radiation dose equivalent value, and if the radiation dose equivalent value is above the reference value or the remaining work time is within the time required for retirement, or both In this case, an individual is provided with an alarm device that notifies at least the name of the worker and the numerical value of the radiation exposure dose equivalent value and the remaining work time corresponding to the above case by voice. Dose management system. 6. A personal alarm dosimeter for measuring the radiation dose exposed by a worker working in the radiation control area in the radiation control area, and a dose equivalent value of the exposed radiation; Personal exposure management using an entry / exit management device that sends and receives personal data such as ID numbers and radiation exposure dose equivalent values to and from a personal alarm dosimeter when entering and leaving the area, and a central computer that centrally manages personal data In the dose management system, the personal alarm dosimeter is a radio communication type personal alarm dosimeter, and the access control device is provided with a means for radio communication with the radio communication type personal alarm dosimeter. The ID number and radiation exposure equivalent value of the worker carrying the personal alarm dosimeter are read, and the work time when the radiation exposure equivalent value is equal to or greater than the reference value or remains. At least one of the time required to leave the area or both, and at least the name of the worker and the corresponding value of the radiation exposure equivalent value and the remaining work time. A personal radiation dose management system, comprising an alarm device for notifying by voice. 7. The display device according to claim 1, wherein the radiation exposure dose equivalent value of the worker is equal to or more than a reference value, or the remaining work time is within a time required for retreating, or both cases. , At least, the name of the worker,
The personal exposure dose management according to claim 1 or 2, further comprising: a voice output unit that notifies the user of the radiation exposure dose equivalent value and the numerical value corresponding to the case in the remaining work time by voice. system.