JPH1164522A - Monitor for out-going personal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitor not causing workmen having entered it uneasiness by a short inspection time. SOLUTION: A stature datum of a workman is previously inputted into an ID card for identifying the individual, the individual management number and the stature datum are read from the ID card when the workman is going the enter monitor, and position of an overhead radiation detector is adjusted based on the stature data. Further, the stature datum is previously inputted into a data processing device of the monitor, and the overhead radiation detector can be also adjusted by receiving the stature datum from the data processing device interlockingly with reading of the ID card.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for inspecting a worker who has worked in a radiation control area, such as a nuclear power plant, when the worker leaves the control area, the state of contamination by radioactive substances.

[0002]

2. Description of the Related Art When a worker who works in a radiation control area such as a nuclear power plant leaves the control area, the status of contamination of the worker by radioactive substances is inspected by a discharge monitor. This exit monitor has the function of adjusting the position of the overhead radiation detector according to the height of the worker,
The measurement accuracy is enhanced by measuring the radiation detector above the head close to the head.

FIG. 4 is a perspective view showing an appearance of an example of such an exit monitor 10 , and FIG. 5 is a flowchart of signal processing in the exit monitor 10 . Worker exit monitor 10
When the automatic display mode of the switch / display unit 2 is selected after confirming that the measurement is possible on the entrance display unit 1, the background value (BG) is measured first. When the operator rides on the entrance mat, the mat switch 3 is turned on, the opening and closing of the entrance door 4 is confirmed, and when the entrance door 4 is closed, it is opened. The entry of the worker into the monitor is detected by the human body detection sensor 5, and the human body detection sensor 5
When the human body is detected and turned on, the height measurement sensor 6 starts measuring the height of the worker. The height measurement first determines whether the height is 1700 mm or more, and if it is less than 1700 mm, confirms the entry of the worker into the monitor, closes the entrance side door 4, and at the same time, the head detector 7 To the top of the head. The measurement is started when an operator inserts a hand into the hand insertion section 8. Note that the position of the crown detector 7 corresponds to the position of the overhead radiation detector.

If the height of the worker is 1700 mm or more, 50
It detects whether it is more or less than every millimeter, and when it becomes less, moves to the process after entry confirmation into the monitor.
In this way, the position of the crown detector 7 is adjusted to a position corresponding to the height of the worker, and the contamination state of the worker is inspected. When the result of the inspection is “normal”, an exit door (not shown) opens, the operator leaves the exit monitor 10 and the inspection ends.

However, if the result of the inspection is "contamination", an alarm is issued, the contaminated site and the degree of contamination are displayed on the switch / display unit 2, and these are printed out as necessary, and the entrance side is displayed. Door 4 opens. The operator causes the ID card reading section (not shown) to read the ID card, exits from the entrance side door 4, cleans the contaminated site, and monitors the exit again.
Take the test at 10 . In this way, when the inspection result becomes “normal”, the worker exits from the exit door of the exit monitor 10 . In the case of "contamination", the personal management number of the ID card and the inspection result are transmitted to a data processing device (hereinafter abbreviated as DPU) of the exit monitor 10 and recorded.

The exit monitor according to the prior art as described above.Ten
Detects the worker's height in 50 mm increments with the height measurement sensor 6
And adjust the position of the crown detector 7 according to the result.
So it takes a long time to make the worker uneasy
There is a problem that.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an exit monitor in which the inspection time is short and the operator is not worried.

[0008]

According to the present invention, when a worker who has worked in a radiation control area such as a nuclear power plant leaves the control area, the monitor is used to check the state of surface contamination of the worker. A height monitor for coarsely adjusting the position of the overhead radiation detector in accordance with the height of the worker in an exit monitor having means for adjusting the position of the overhead radiation detector in accordance with the height of the worker; Height data written on the ID card of the worker is used as the data.

[0009] Since the worker's height data written on the ID card is read and the position of the radiation detector above the head is adjusted, the inspection time can be reduced. Also, when a worker working in a radiation control area such as a nuclear power plant leaves the control area, the monitor is an exit monitor that checks the surface contamination status of the worker. In the exit monitor equipped with a means for adjusting the position of the radiation detector, the height data for coarsely adjusting the position of the overhead radiation detector according to the height of the worker is input in advance to the DPU of the exit monitor. The height data of the worker is read from the DPU by reading the worker's ID card and transmitting the data to the DPU to be used.

[0010] By causing the exit monitor to read the ID card, the height data of the worker is received from the DPU of the exit monitor, so that the inspection time can be reduced in this case as well.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An exit monitor according to the present invention records height data of a worker directly or indirectly by recording height data of the worker in advance and reading an ID card of the worker. Receive and adjust the position of the radiation detector above the exit monitor based on the data.

An embodiment of the exit monitor according to the present invention will be described below. The parts having the same functions as those of the prior art are denoted by the same reference numerals. [First Embodiment] FIG. 1 is a flowchart showing signal processing in a first embodiment of an exit monitor according to the present invention, and FIG. 3 is a perspective view showing an appearance thereof.

The exit monitor 10a of this embodiment does not have the human body detecting sensor 5 and the height measuring sensor 6 provided in the exit monitor 10 according to the prior art, and instead has an ID card reading section 9 disposed on the front. . Worker exit monitor 10
Switch to check the display of the measurement Allowed a of the entrance display section 1
When the automatic mode of the display unit 2 is selected, first, a background value (BG) is measured. When the operator causes the ID card reading unit 9 to read the ID card and at the same time rides on the entrance mat to turn on the mat switch 3, the opening and closing of the entrance side door 4 is confirmed, and the entrance side door 4 is closed. Opened in case. The ID card reading section 9 reads the personal management number and height data recorded on the ID card, and the top detector 7 descends to the standby position and stands by according to the height data. Subsequently, after confirming that the worker has entered the monitor 10a , the entrance side door 4 is closed, the parietal detector 7 descends, and the parietal detector 7 is detected and stopped. The measurement is started by hand insertion. Subsequent operations on the measurement result are the same as those in the related art, and thus description thereof is omitted.

In this embodiment, since the height data of the worker recorded on the ID card is read by the ID card reading section 9 and the position of the top detector 7 is adjusted, the height measuring sensor as in the prior art is used. The time for measuring the height in increments of 50 mm can be omitted, and the inspection time is shortened. [Second Embodiment] FIG. 2 is a flowchart showing signal processing in a second embodiment of the exit monitor according to the present invention, and its appearance is as shown in FIG. 3 as in the first embodiment.

In this embodiment, instead of recording the worker's height data on the ID card, the exit monitor 10a
Is input in advance to a DPU (data processing device), and when an operator causes the ID card reading unit 9 to read the personal management number of the ID card at the time of inspection, the number is transmitted to the DPU, and the worker is transmitted from the DPU. And the head detector 7 is lowered to the standby position based on the data. The following flow is the same as in the first embodiment, and a description thereof will not be repeated.

In this embodiment, similarly to the first embodiment, the time for measuring the height with the height measuring sensor can be omitted as in the prior art, and the inspection time can be shortened.

[0017]

According to the present invention, there is provided an exit monitor for inspecting a surface contamination state of a worker who has worked in a radiation control area such as a nuclear power plant when the worker leaves the control area, In an exit monitor equipped with means for adjusting the position of the overhead radiation detector according to the height of the worker, as height data for coarsely adjusting the position of the overhead radiation detector according to the height of the worker, Since the height data written on the worker's ID card is used, the time for adjusting the position of the overhead radiation detector can be shortened, the examination time can be shortened, and the worker does not have to worry.

Further, when the worker who has worked in the radiation control area such as a nuclear power plant leaves the control area, the monitor is an exit monitor for inspecting the surface contamination state of the worker. In the exit monitor equipped with a means for adjusting the position of the radiation detector above the head, the height data for coarsely adjusting the position of the radiation detector above the head according to the height of the worker is stored in advance in the DPU of the exit monitor. Since the input height data of the worker is read from the DPU by reading the worker's ID card and transmitting the data to the DPU, the inspection time can be shortened in this case as well, making the worker uneasy. Disappears.

[Brief description of the drawings]

FIG. 1 is a flowchart showing signal processing in a first embodiment of an exit monitor according to the present invention;

FIG. 2 is a flowchart showing signal processing in a second embodiment of the exit monitor according to the present invention;

FIG. 3 is a perspective view showing the appearance of an embodiment of the exit monitor according to the present invention.

FIG. 4 is a perspective view showing the appearance of an example of an exit monitor according to the related art.

FIG. 5 is a flowchart showing signal processing in an exit monitor according to the related art.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1 entrance display section 2 switch / display section 3 mat switch 4 entrance side door 5 human body detection sensor 6 height measurement sensor 7 top detector 8 hand insertion section 9 ID card reading section 10 , 10a exit monitor

Claims (2)

[Claims] An exit monitor for inspecting the surface contamination status of a worker who has worked in a radiation control area such as a nuclear power plant when the worker leaves the control area, the monitor being adapted to the height of the worker. In an exit monitor equipped with means for adjusting the position of the radiation detector above the head, the height data for coarsely adjusting the position of the radiation detector above the head according to the height of the worker is stored in the ID card of the worker. An exit monitor using the written height data. 2. An exit monitor for inspecting a surface contamination state of a worker who has worked in a radiation control area such as a nuclear power plant when the worker leaves the control area, the monitor being adapted to the height of the worker. In an exit monitor provided with means for adjusting the position of the overhead radiation detector, a data processing device of the exit monitor as height data for coarsely adjusting the position of the overhead radiation detector according to the height of the worker. An exit monitor characterized in that the worker's height data, which has been input in advance, is received from the data processing device by reading the worker's ID card and transmitting the data to the data processing device.