JPH09159768A - Body surface contamination detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the physical and mental burden of inspection for a leaving person and rationalize the inspection by avoiding special inspection time. SOLUTION: Each monitor 11b to 13b for inspecting put-off gloves, cap, socks, working wear and under wear, a monitor 14 for inspecting the sole of a foot during hand washing, each monitor 15 and 16 for inspecting hands and face while drying hands are placed along with the leaving path so that the contamination inspection of each part of body surface of a leaving person is directly or indirectly done in a natural manner in the process that the leaving person is to treat when going out from a monitored area to non-monitored area. On the other hand, in parallel to this body surface inspection, the contamination of small articles are inspected with other monitors.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting the body surface contamination of a person who has entered a radiation controlled area such as a nuclear power plant, a nuclear research institute, a radiation equipment manufacturing factory, etc. at the time of leaving, and particularly Instead of confining a person in a specific space for inspection, placing monitors for each part along the exit route directly
The present invention relates to an apparatus for inspecting body surface contamination, which is used for indirect inspection, which reduces the physical and mental burden on the inspection of the leaving person, and rationalizes the inspection by eliminating the need for special inspection time.

[0002]

2. Description of the Related Art Conventionally, in nuclear power plants, nuclear research institutes, manufacturing plants for radiation equipment, etc., in order to reduce exposure and prevent the spread of contamination by radiation isotopes, a radiation-controlled area has been set up The surface contamination of people who leave (mainly radiation workers) and carry-out articles such as carry-out tools and portable items (hereinafter referred to as small articles) is monitored to be below a predetermined limit value. For this monitoring or inspection, a body surface contamination monitor (hereinafter referred to as a body surface monitor) relating to the body contamination of the leaving person and a small article monitor relating to the small article are used.

FIG. 4 is a conventional inspection process diagram. In FIG. 4, a dressing room, a body surface monitor for monitoring, and a small article monitor are installed in the boundary area between the management area and the non-management area, which belongs to the management area side. Exiters proceed along the path indicated by the thick arrow. First, stop in front of the shoe box 31, take off the shoes that were lent and worn in the controlled area, and put them in the shoe box 31. A circle indicates a position where a motion is stopped while moving (for example, the wearer takes off the clothes), and a broken line arrow indicates a direction of the motion (for example, the clothes are taken off). While proceeding, a basket 32 for accommodating the hat that was lent and worn similarly, a basket 33 for gloves, a basket 34 for socks, a basket 35 for overalls (work clothes),
Put the corresponding items in the underwear basket 36.
Here, underwear refers to shirts, pants, etc. for rent that are worn directly on bare skin or on personal underwear.

Next, the hands are washed with water or soap in the hand washing area 37, and the wetness is dried by a hand dryer 38 (or a hand-wiping paper) on the opposite side of the hand dryer. After that, the small article is set on the small article monitor 39, and the surface contamination is inspected. The small articles that have been inspected will be carried out from the other side (bottom side of the figure) and wait for the exiter to receive them. As a final step,
Inspect one's own body surface contamination by entering one of the below-mentioned body surface monitors 60 or 40 installed in parallel. When this is completed, after receiving the small articles that have already been carried out, the process proceeds to the next step, which is the dressing room for personal clothes (the place where the clothes were first undressed). Whenever contamination is found during the inspection process, the staff will give appropriate instructions each time.

Now, one conventional body surface monitor 60 will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view seen from the radiation control area. In FIG. 5, when an exiter from the radiation controlled area steps on the entrance mat 66, the entrance door 61 that has been closed until then opens, and “Measurable” on the display 67.
Is displayed. Also, when the leaving person is new to pollution measurement like a visitor and is not used to it, the switch 62
Is operated in advance. Now, when an exiting person enters inside and places his / her both feet on the platform 63, this is detected by a foot sensor (not shown). Next, when the evacuee puts his or her palms vertically and inserts them into the right hand insertion opening 64 and the left hand insertion opening 74 hidden behind the entrance door 61 (see FIG. 6),
This is detected by a hand position sensor (not shown). Then, the head measuring unit 65 starts descending toward the head of the leaving person, and finishes the overhead positioning suitable for the contamination measurement of the head. Overhead positioning is a height measurement sensor 68
Is done via

As described above, the preparation for the contamination measurement of the leaving person is completed. However, when the visitor-corresponding switch 62 is operated in advance, the entrance door 61 is closed at a stage as late as possible on condition that this preparation preparation is completed. . This is to prevent an exit person, such as an observer, who is unfamiliar with the contamination measurement from feeling uneasy or scared about closing the entrance door 61 at an early stage. On the other hand, when the visitor-corresponding switch 62 is not operated in advance, that is, when the exiter is accustomed to measuring contamination, the exiter puts the entrance door 61 at an early stage when he / she puts both feet on the platform 63.
Is closed.

Next, the measurement of the body surface contamination of the evacuated person is carried out for a total of 17 sites through the measurement sensor efficiently arranged on the body surface. Specifically, the measurement site includes the top of the head, the left and right soles, the back of each hand, the palm, the front (face, chest, abdomen, front thighs, front legs), the back (back of the head, upper back, lower back, Posterior thigh, posterior leg), side (upper, lower, middle on each side).

FIG. 6 is a perspective view seen from the non-managed area side. In FIG. 6, reference numeral 71 denotes an exit door, which is closed by stepping on the exit mat 76 when an exiting person goes out to the non-controlled area after finishing the contamination measurement, and closes it through a switch attached thereto. The hand insertion opening 74 is for the left hand as described above, and is paired with the hand insertion opening 64 for the right hand in FIG. The prismatic unit installed upright on the left side in FIG. 6 has an upper display section 77,
It is an integral structure consisting of a lower maintenance unit with no reference numeral. The display unit 77 displays the measurement result, the measurement end, and the like on the exit side, and provides guidance and instructions regarding the measurement to the person leaving the monitor.

In the conventional body surface monitor 60, when a person leaving the radiation controlled area is not used to measuring contamination like a visitor, he or she operates the switch 62 corresponding to the visitor in advance so that the entrance is as late as possible. The door 61 is closed to prevent anxiety and fear. However, it is still undeniable that there is a ceiling above the subject's head, and the surrounding area is completely enclosed, leaving a sense of oppression. Also,
In addition to the overall structure, there is room for improvement in anxiety, such as inconvenience, coldness, and firmness.

Another body surface monitor 40, which has taken measures against the above-mentioned improvements, will be described with reference to FIGS. 7 and 8.
FIG. 7 is a perspective view of the same as seen from the management area side. The body surface monitor 40 includes an entrance door 41, an exit door 42 (see FIG. 8) that is opposed to the entrance door 41, a left front wall body 43, a right rear wall body 44, and a base 45. It has a rectangular tubular structure with an open top. On the front wall 43, an exhibition window unit 80 is provided on the left front side end face thereof, an indicator light 47 on the upper face thereof, and a display unit 100 for displaying various information relating to the measurement process as guidance and instructions. However, a pair of left and right hand measuring units 90 are also provided on the upper right side (inside).
Each is provided. In addition, the entrance door 41 and the exit door 42 (see FIG.
As shown by hatching, a wood-grained decorative plate 49 is attached to each upper edge of the front wall 43 and the front wall 43. Further, on the exit side, an exit mat 46 having an inclined surface is installed so as not to fall over due to a step. It is desirable to have a similar entrance mat on the entrance side as well, but since care is taken when entering it, there is little risk of stumbling at a step and it is often omitted. In the exhibition unit 80, images, photographs, and still life items that have the effect of calming and relaxing the feeling will be displayed in the space inside the window.

A person exiting the radiation controlled area enters the inside of the embodiment from the front left side (at that time, the entrance door 41 is open and the exit door (not shown) opposite thereto is closed), and the front wall Faced to the body 43, thus standing upright with the back facing the back wall body 44, and inserting both hands into the insertion parts of the left and right hand measuring units 90, this was attached to the foot sensor and the hand insertion part not shown. Detected via the hand sensor, the entrance door 41 is closed, and the contamination measurement on the body surface of the leaving person is started.

By looking at the exhibits in the display window unit 80 before entering for the measurement, the evacuee eliminates the anxiety and resistance to the contamination measurement, which is likely to be caused by unfamiliarity, and is as calm as possible. I feel at ease.
Since the head of the leaving person has a shape protruding upward from the embodiment when inside the body surface monitor 40, he or she can feel a sense of liberation, and anxiety and resistance to the contamination measurement are alleviated.
The pair of right and left hand measurement units 90 can be variably positioned up and down, so a comfortable position suitable for the subject is selected, and the display unit 100 is placed vertically according to the height of the subject. The shake angle is automatically set, and the subject can easily see the display screen and can easily grasp various information accurately. At the upper edge of each of the entrance door 41, the exit door 42, the front wall body 43, and the back wall body 44, the wood-grained decorative plate 49 provided in the main part visible to the subject is the coldness of the previous monitor. By removing the hardness, it is possible to give the subject a sense of security and familiarity. Some of the considerations mentioned above exert synergistic effects to help untrained exiters relieve their anxiety and resistance to pollution measurements, and thus facilitate accurate measurements.

FIG. 8 is a perspective view of the entrance door 41 and the exit door 42 opened and viewed from the management area side. On the inlet side end surface of the front wall body 43,
The display window unit 80 is a partial door type, and a maintenance door whose end face on the exit side is not marked is also installed on the entire surface. The waiting time indicator 48 located above the display window unit 80 shows the approximate waiting time until the next measurement (until the current measurement is completed) to the next exiter. A pair of foot detectors 56 in the center of the base 45, a left side detector 51 for exiters at the upper inner surface of the entrance door 41, a right side detector 52 at the upper inner surface of the exit door 42, and a rear wall 44 A back detector 55 is installed at the bottom of the inner surface, and a front wall 43
Although not visible here, each of the upper and lower detectors on the front is equipped on the inner surface of the.

[0014]

[Problem to be Solved by the Invention] Conventional body surface monitor 40
So, when the inside of the monitor has a cylindrical structure with the top of the monitor open, the head protrudes from the monitor so that you can feel a sense of liberation. You will be facing the exhibition window, and you will be able to see the scenery and still life displayed in it that have the effect of calming and peaceful feelings, giving the examinee a sense of familiarity and security, for example With the idea that a decorative board such as wood grain is installed in the main part visible from the exit, such as the upper edge of the entrance door, exit door, front wall and back wall, It is expected that the sense of intimacy and security will alleviate the anxiety and resistance to the contamination test, and that an appropriate body contamination test can be carried out smoothly. However, there is still a fundamental problem in confining the evacuee in a specific space and intensively inspecting body surface contamination, and rationalization of inspection from this viewpoint is strongly desired.

The problem to be solved by the present invention is to provide a body surface contamination inspection device which solves the above problems of the conventional technique and further rationalizes the inspection.

[0016]

SUMMARY OF THE INVENTION The present invention is an apparatus for inspecting a body surface contamination of a person who enters a radiation controlled area at the time of exit thereof, and inspects the hat, gloves and socks taken off by the person. A first monitor; a second monitor for inspecting the work clothes taken off by the person; a third monitor for inspecting the underwear taken by the person; Or a fourth monitor for inspecting the contamination of the soles of the hands when drying the hands; and fifth and sixth monitors for respectively inspecting the contamination of the hands and the face when the person dries the hands; It is arranged along the normal route when exiting.

Further, the present invention is provided with a carrying means and a container for placing and carrying each of a set of a hat, gloves and socks, work clothes, and underwear, and a container, and each of the first, second and third monitors. Is provided near the corresponding transporting means or container, or a small article monitor unit for inspecting the contamination of small articles worn by the person, for example, transporting to place and carry small articles and carry them out to the outside. It is preferable to separately provide a unit having a carry-out means and a small article monitor for inspecting the contamination of the small article before the carry-out.

Therefore, according to the present invention, the hat, gloves and socks, workwear, and underwear each of which a person who has entered the radiation controlled area and takes off in the process of following the normal route when exiting is contaminated first. , The second and third monitors. Further, when the person washes his hands or dries them, the contamination of the soles of the feet is examined by a fourth monitor, and when he dries his hands, the contamination of the hands and the face respectively. It is inspected by each of the fifth and sixth monitors. In addition, the contamination of the small articles worn by the person is caused by the contamination of the small article monitor unit (for example, the carrying / unloading means for placing / transporting the small articles and carrying them out to the outside, and the small articles before the carrying out. Consists of a small article monitor to inspect).

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the inspection process chart of FIG. In FIG. 1, a dressing room, a monitor for each part for monitoring and a small article monitor are installed in a boundary area between the management area and the non-management area, which belongs to the management area side. The evacuee proceeds along the path indicated by the thick arrow, first stops in front of the shoe box 31, removes the shoes worn in the controlled area, and puts them in the shoe box 31. ○ indicates the motion that is stopped while the process is in progress (such as taking off the clothes)
The location and the dashed arrow with the symbol ~ indicate the direction of operation (inserting things that have been taken off, etc.). Next, the small article reception 18 deposits (puts in) the small article worn by the exiter.
The deposited small articles are placed and transported via the belt conveyor 19, sent into the small article unloading warehouse 20 at the end thereof, and the contamination is inspected by the monitor provided in the warehouse before unloading. Later, they will have to wait for the evacuee to carry it out. The peripheral structure of the small article carrying-out / delivering room 20 will be described later.
Note that this monitor may be provided in the middle of the belt conveyor 19. Now, while the small articles are transported and inspected, the contamination of the body surface of the leaving person is inspected directly or indirectly as described below.

The monitor unit 11 for gloves, hats and socks,
Belt conveyor 11a for placing and carrying gloves, hats and socks
, Monitors for contamination inspection provided above and below the middle point 1
It consists of 1b and a basket 11c to be stored after transportation. The leaving person places the removed gloves, hat, and socks on the belt conveyor 11a in front of the monitor unit 11 for gloves, hat, and socks. These are conveyed by a belt conveyor 11a, and in the middle of them are inspected for contamination from both upper and lower sides via a monitor 11b, and then stored in a basket 11c. This item will be retrieved later by an attendant. Here, the monitor 11b can be provided near the basket 11c. Whenever abnormal contamination is detected by the monitor 11b, a staff member gives an appropriate instruction each time.

Along with the monitor unit 11 for gloves, hats and socks, the monitor unit 12 for overalls (work clothes),
The underwear monitor unit 13 is arranged in parallel. Belt conveyors 12a, 13a that correspond to overalls (work clothes) and underwear
Is placed on, is transported, and is housed in each of the baskets 12c and 13c provided at the terminal end. Each monitor 12b, 13b is provided so that it can be inspected from the upper and lower sides at an intermediate position of the corresponding belt conveyor 12a, 13a. For convenience of explanation, the monitor unit 11 for gloves / hat / socks, the monitor unit 12 for overalls (work clothes), and the underwear monitor unit 13 are distinguished, but only the objects to be handled (wearing items) are different,
Each actual unit configuration is the same. Although rare, monitor units for overalls (work clothes) and underwear
Sometimes 12,13 are not used, that is, pollution inspection may be omitted.

This monitor unit 1 for gloves, hats and socks
1, the overall (work clothes) monitor unit 12, and the underwear monitor unit 13, each inspection, instead of directly inspecting each part of the body surface of the evacuee, the clothing that covers each part Indirect inspection is performed, and the contamination of each part is considered to correspond to the contamination of the clothing. This inspection method can significantly reduce the physical and mental burden on the leaving person.

Next, when the hands are washed with water or soap in the hand washing area 37, the foot monitor 14 laid on the floor or the table directly inspects the soles for contamination. After washing your hand, stand in front of the hand dryer 38 across from it to dry your wet hand and at the same time your hand from both sides.
From 15 the face is directly inspected for contamination by the face monitor 16 directly from the front.

The arrangement of the foot monitor 14, hand monitor 15 and face monitor 16 will be described with reference to FIG. 2, which is a schematic view thereof. The evacuee on the left is to rest on the floor, on the platform 17 with a footstep showing the foot position, and to wash at the washroom.
Wash your hands at 37 (faucet). At that time, the sole of the foot is inspected by the foot monitor 14 laid on the step 17. The exit person on the right sits on the platform 17 on the floor, and the hand dryer 38
Put your wet hand on the place where the warm air blows and dry.
In the description with reference to FIG. 1, the leaving person changes the direction only at the same location to wash and dry his hands, but in actuality, he / she will actually move the positions to wash and dry. Now, a hand monitor 15 is arranged so as to sandwich the hand of the leaving person from both sides, and a face monitor 16 is arranged so as to face the face. The foot monitor 14 is a step on the side of the washroom 37.
Step 17 on the side of the hand dryer 38 instead of 17 (on the left side of the figure)
It can also be laid on the right side of the figure. These soles and hands
Each face inspection is performed by operating each monitor assuming that the face is properly positioned, based on the detection of a position sensor (not shown), and placing the platform 17 supports the normal positioning. The inspection of the soles of the feet, hands and face is automatically and naturally performed in each process of washing and drying the hands originally required when leaving, thus reducing the physical and mental burden on those who leave. Will help.

With the above, the predetermined processing that the leaving person should take is completed, and the person exits the management area side to the non-management area side. The exiter receives the small articles waiting to be received at the small article carry-out box 20, and then moves to the next step, the dressing room. Now, the peripheral structure of the small article unloading warehouse 20 will be described with reference to FIG. 3 which is a perspective view. The small article carrying-out garage 20 is located at the end of the belt conveyor 19 and is partitioned by an entrance door 21 and an exit door 22 which can be moved up and down. When the small article 30 is conveyed by the belt conveyor 19, the entrance door 21 rises and opens, and the small article 30 is carried into the small article unloading / unloading box 20.
After being placed, the entrance door 21 descends. Each monitor pair 23, 24, 25 is provided to inspect the small articles 30 in the small article unloading box 20 from front, rear, left and right, and up and down directions. The monitor pair 23 is installed inside the entrance door 21 and the exit door 22, the monitor pair 24 is installed inside the side wall 26, and the monitor pair 24 is installed at an upper position opposite to the bottom surface of the small article carrying-out box 20. Only one of the pair of monitors 23 and 24 is shown, and the other is hidden behind the object and cannot be seen. On the pair of monitors 25, the bottom side is displayed as a broken line and the upper position is virtually displayed. Further, in practice, a multi-tiered shelf is installed in front of the exit door 22, and the small articles 30 are temporarily placed and stored in this shelf in the order in which they are carried out, waiting for receipt by the leaving person.

[0026]

According to the present invention, the following excellent effects can be expected. (1) Unlike the conventional method, instead of confining an exiter in a specific space and inspecting it intensively, contamination of each part of the body surface is inspected directly or indirectly in the exiting process of the exiter. It is possible to reduce the physical and mental burden on the patient and to rationalize the inspection by eliminating the need for special inspection time. The basis for this is that the hat, gloves and socks, workwear, and underwear that are taken off one after another in the process of exiting are inspected on the first, second, and third monitors.
This means that the corresponding part of the body surface is indirectly examined for contamination. Further, when the person is washing or drying his hands, the sole of the foot is inspected for contamination by a fourth monitor, and when the person is drying his hands, the contamination of the hands and face is respectively the fifth and fifth. This is because the sixth monitor is inspected, that is, the contamination of the corresponding portion of the body surface is directly inspected. (2) Since the part of the body surface that is highly likely to be contaminated is inspected, the content of the inspection is reduced accordingly, and the inspection man-hour is shortened and the management becomes easier. (3) Compared with the conventional method, it is not necessary to carry small articles when leaving, and the inspection is performed in parallel with the body surface inspection, which is convenient because it saves trouble and shortens the total processing time.

[Brief description of the drawings]

FIG. 1 is an inspection process diagram of an embodiment according to the present invention.

FIG. 2 is a schematic diagram relating to a foot monitor, a hand monitor, and a face monitor in the embodiment.

FIG. 3 is a perspective view of the vicinity of the small article carrying-out / removing unit in the embodiment.

FIG. 4 is an inspection process diagram of a conventional example.

FIG. 5 is a perspective view of one conventional body surface monitor viewed from a management area.

FIG. 6 is a perspective view of the body surface monitor as seen from an uncontrolled area.

FIG. 7 is a perspective view of another conventional body surface monitor viewed from a management area.

FIG. 8 is a perspective view of the body surface monitor as seen from the control area with each door opened.

[Explanation of symbols]

11 monitor unit (for gloves, hat, socks) 12 monitor unit (overall (work clothes)
13) Monitor unit (underwear) 11a, 12a, 13a Belt conveyors 11b, 12b, 13b Monitors 11c, 12c, 13c Basket 14 Foot monitor 15 Hand monitor 16 Face monitor 17 Step board 18 Small article reception 19 Belt conveyor 20 Small article carry-out Storage 21 Inlet door 22 Outlet door 23, 24, 25 Monitor pair 30 Small articles 31 Shoe box 38 Hand dryer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsutomu Kato 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (72) Hiroshi Sato 1 Nitta Tanabe, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 inside Fuji Electric Co., Ltd.

Claims (4)

[Claims] 1. A device for inspecting a body surface contamination of a person who has entered a radiation controlled area at the time of leaving, and a first monitor for inspecting the contamination of a hat, gloves and socks taken off by the person; A second monitor to inspect the work clothes taken off for contamination;
A third monitor that inspects the underwear that the person has taken off;
A fourth monitor for inspecting sole contamination when the person is washing or drying his hands; and a fifth monitor for inspecting hand and facial contamination, respectively, when the person is drying his hands , A sixth monitor; and a sixth monitor; are arranged along the route when exiting. 2. The apparatus according to claim 1, further comprising a transporting means and a container for placing and transporting each of a set of a hat, gloves and socks, work clothes, and underwear, and a container. An apparatus for inspecting body surface contamination, characterized in that each third monitor is provided in the vicinity of a corresponding transportation means or container. 3. The device according to claim 1, wherein
An apparatus for inspecting body surface contamination, further comprising a small article monitor unit for inspecting the contamination of small articles worn by the person. 4. The apparatus according to claim 3, wherein the small article monitor unit includes a carrying / unloading means for placing and carrying the small article and carrying it out to the outside, and a small article for inspecting the contamination of the small article before carrying out. An apparatus for inspecting body surface contamination, comprising: an article monitor.