JPH0476590B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a contamination inspection tape for measuring the surface contamination density by taking a sample from the surface of an object to be inspected such as a drum can.

"Prior Art" Generally, radioactive waste generated at nuclear power plants and the like is packed into drums as a solidified substance and stored in a storage and processing facility. When carrying out this storage treatment, it is necessary to measure the surface contamination density from the viewpoint of transportation and storage management of radioactive waste.

By the way, conventionally, the above-mentioned surface contamination density was measured by
The worker presses the smear filter paper against the surface of the object to be inspected, wipes off the radioactive substances adhering to the surface of the object, and uses a measuring device to measure the amount of radioactive substances adhering to the smear filter paper to determine surface contamination. Density was being measured.

``Problems to be solved by the invention'' However, in the measurement work described above, the worker must get close to the object to be inspected (drum), so the radiation level of each object to be inspected is Even if the exposure level is low, if you work for a long time, the amount of radiation exposure may become non-negligible. For this reason, it is desired to automate and remotely measure the surface contamination density, and various measuring devices have been proposed (for example, Japanese Patent Application Laid-open No. 143797/1983). In addition to being unsatisfactory in terms of reliability and work efficiency when attempting to perform measurements across multiple locations, it is also difficult to identify the contaminated location or There is a problem that it is difficult to remove pollutants.

As a result of various studies, the inventors of the present invention have developed a new surface contamination density measuring device. and,
The present invention provides a contamination inspection tape that is easy to handle, improves measurement efficiency, and allows easy identification of contaminated locations when used in this surface contamination density measuring device. With the goal.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a sample collection sheet material having a width narrower than that of a long transporting core material approximately at the center of the long transporting core material. At the same time, locking holes are formed in the side edges of the conveying core material to engage with sprockets for guiding and conveying the conveying core material.

"Function" In the contamination inspection tape of the present invention, by engaging the locking hole of the conveying core material with the sprocket and guiding and conveying the conveying core material, Contaminants attached to a sample collection sheet provided in the center are continuously collected and transported to measure the contamination density.

"Embodiment" Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 33.

FIG. 1 is a diagram showing an example of the contamination inspection tape T of the present invention, in which the contamination inspection tape T has a central portion of the conveyance core material Ta made of a long polyester or the like. Sample collection sheet material made of smear filter paper or non-woven fabric with a width narrower than Ta
Tb is adhered thereto, and locking holes Tc that engage with sprockets for guiding and conveying the conveying core material Ta are formed at appropriate intervals on both side edges of the conveying core material Ta.

The contamination inspection tape T is used in a surface contamination density measuring device whose overall configuration is shown in FIG. This surface contamination density measuring device uses a turntable (rotation mechanism) on which a drum (inspected object) D is placed and rotates the drum D.
1, a top plate sampling device 2, a side plate sampling device 3, and a bottom plate sampling device 4 for collecting contaminants (radioactive substances) attached to the top plate Da, side plate Db, and bottom plate of the drum D. The basic structure consists of a measurement chamber 5 for measuring samples collected by each of the sample collection devices 2, 3, and 4, and a disposal box 6 for collecting the samples measured by the measurement chamber 5. And the above turntable 1
As shown in FIG. 20, the drum D is supported and rotated by three or more truncated conical rotating rollers 1a.

Each of the sample collecting devices 2, 3, and 4 includes a pair of support columns 7c, a square threaded rod 7d each, and a reinforcing column between an upper bearing pedestal 7a and a base 7b, which are arranged vertically opposite to each other and separated from each other. Support stand 7 formed by standing up 7e.
The top plate, side plates, and bottom plate arms 20, 30, 40 are supported by both the pillars 7c and the square threaded rod 7d so as to be movable up and down, respectively, and the top plate, side plates, and bottom plate arms 20, 30, 40 are A lifting mechanism 2 that is provided in and that lifts and lowers each arm 20, 30, 40
1, 31, 41, and each of the above arms 20, 30, 4
The top plate, side plates, and bottom plate arm heads 22, 32, 32, and 42 are movably provided in the horizontal direction.
and these arm heads 22, 32, 32, 4
Forward and backward movement mechanism 23, 33, 33, 4 that moves 2
3, and each of the arm heads 22, 32, 32, 4
2 and a belt feeding mechanism 24 that is installed between each arm 20, 30, 40 and the entrance of the measurement chamber 5 and conveys the sample to the measurement chamber 5;
34, 34, and 44.

Base plate 20a of the top plate arm 20
as shown in FIG. 7, to both supports 7c via the slide bearing 20b, and as shown in FIG.
They are each supported via bearings 20c by vertical drive nuts 21a that are engaged with square threaded rods 7d. A gear 21b is externally mounted on the vertical drive nut 21a, and this gear 21
b is meshed with a gear 21d of a reduction gear 21c installed on the base plate 20a. Further, the speed reducer 21c is connected to a vertical drive motor 21f with a brake installed on the base plate 20a via a coupling 21e. The base plate 20a is moved up and down along the pillars 7c and the square threaded rod 7d by the vertical drive motor 21f, and these vertical drive nuts 21a, gears 21b, 21d, and speed reducer 21c, the coupling ring 21e, and the vertical drive motor 21f constitute the elevating mechanism 21.

A pair of upper and lower guide rails 20d arranged parallel to the base plate 20a includes a sliding member 2.
A slide plate 22b of the top plate arm head 22 is supported via 2a so as to be movable in the horizontal direction. Between the two guide rails 20d, the ball screw shaft 23a is parallel to the two guide rails 20d, and the bearing members 20e, 20
It is attached to the base plate 20a via f. A ball screw nut 23b is attached to this ball screw shaft 23a, and this ball screw nut 23b is fixed to the slide plate 22b. In addition, the ball screw shaft 23a
A gear 23c is attached to the base end of the gear 23c, and a gear 23e attached to the rotating shaft of a forward/reverse drive motor 23d installed on the base plate 20a is meshed with the gear 23c. The slide plate 22b is reciprocated in the horizontal direction along both guide rails 20d and the ball screw shaft 23a by the forward and backward drive motor 23d.
3a, ball screw nut 23b, gear 23c, 2
3e, the forward and backward movement mechanism 23 is constituted by the forward and backward movement drive motor 23d.

A tape cutting mechanism 25, a sub-tape transport mechanism 26, and a tape pressing mechanism 27 are attached to the slide plate 22b of the top plate arm head 22 in this order from the base end to the distal end. This tape cutting mechanism 25 includes a cutter cylinder 25a fixed to a slide plate 22b, a movable blade 25b connected to the tip (lower end) of a piston rod of this cutter cylinder 25a, and a movable blade 25a.
Fixed blade 25c installed below 5b, and the front and back of this fixed blade 25c (left and right in Fig. 16)
The contamination test tape (sample collection tape) T conveyed along the tape guide 25d is
By operating the cutter cylinder 25a, the cutter cylinder 25a is inserted between a movable blade 25b and a fixed blade 25c arranged above and below for cutting.

Further, as shown in FIG. 11, the sub tape transport mechanism 26 includes a sub roller drive device 26a installed on the slide plate 22b, and a sub roller drive device 26a that is connected to the slide plate 22 of the sub roller drive device 26a.
Gear 26 attached to the tip of the rotating shaft passing through b
b, a drive shaft 26d with a gear 26c meshing with the gear 26b attached to one end and rotatably supported by the slide plate 22b via a bearing member 22c, and a drive shaft 26d attached to the other end of the drive shaft 26d;
A sub-transport roller 26f has teeth (sprockets) 26e formed at both ends, and a locking portion 26g having a concave cross-section and engages with both the teeth 26e.
A presser roller 26h formed with a presser roller 26h, and a lever whose proximal end is rotatably supported by a lever fulcrum shaft 26i fixed to a slide plate 22b, and the presser roller 26h is rotatably held at a bifurcated portion at the distal end. 26j, and a tension coil spring 26l stretched between the intermediate part of this lever 26j and a spring hanging shaft 26k fixed to the slide plate 22b, and the auxiliary roller drive device 26
a to rotate the sub-conveyance roller 26f, and a tension coil spring 26l to rotate the presser roller 26h around the lever fulcrum shaft 26i to press it against the sub-conveyance roller 26f.

Furthermore, as shown in FIG. 10, the tape pressing mechanism 27 includes a pressing cylinder 27b provided at the top of the tip of the slide plate 22b via a bracket 27a, and a pressing cylinder 27b.
A movable shaft 27 is bendably connected to the tip (lower end) of the piston rod via a link ball 27c.
d, a hollow gear shaft 27g that supports the movable shaft 27d slidably in the vertical direction via a slide bearing 27e, and is rotatably attached to the slide plate 22b via a bearing member 27f; Gear 27 attached to the top of gear shaft 27g
h, and a gear 27i meshed with this gear 27h.
This gear 27i is attached to the rotating shaft, and the oscillating drive device 27j is installed on the slide plate 22b, and the slide plate 22b.
A supply reel 27l for contamination inspection tape T is provided via a mounting member 27k on the surface opposite to the surface on which the swing drive device 27j is installed, and a supply reel 27l is attached to the tip (lower end) of the movable shaft 27d. It is composed of a pressure roller support section 8.

Further, the pressure roller support section 8 includes a pair of parallel, substantially triangular roller frames 81 and 82 attached to the tip of the movable shaft 27d via a joint 80, and both roller frames 81 and 82.
82, the tape guide 83 provided between the upper left corner, both roller frames 81,
A press roller 84 is rotatably attached between the lower corners of 82 and has a soft resin such as urethane attached to its surface; Rollers 85, 8 are attached to the rollers 85, 8 and have sprockets 85a, 86a at both ends
6, and a pair of levers 87 rotatably attached to both roller frames 81 and 82, respectively, at positions above these rollers 85 and 86.
is rotatably attached to the tip of each pair of levers 87, and has the teeth 85a, 86a at both ends.
Presser rollers 88, 89 formed with locking portions 88a, 89a that engage with the presser rollers 88, 8
9, and each presser roller 88, 8
A tension coil spring 90 for pressing the rollers 85 and 86 against each of the rollers 85 and 86, and a tension coil spring 90 installed in the middle of the roller frame 81 via a mounting plate 91, and supplying an adhesive tape 92 between the roller 86 and the presser roller 89. The main tape transport mechanism 94 is provided between both roller frames 81 and 82 and transports the contamination test tape T. Both locking portions 88a of the presser roller 88 are formed with a concave cross-section, and both locking portions 89a of the presser roller 89 have rectangular grooves formed in the cylindrical surface (see FIG. 12). and Figure 13).

The main tape transport mechanism 94 includes a main roller drive device 94a installed between both roller frames 81 and 82, a motor pulley 94b attached to a rotating shaft of the main roller drive device 94a passing through the roller frame 82, and a roller frame 82
A tension pulley 94c is vertically adjustable and rotatably attached to the drive shaft 94d, and a drive shaft 94d is rotatably supported by both roller frames 81 and 82.
and a drive shaft 94 passing through the roller frame 82.
The driven pulley 94e attached to one end of
A drive roller 94h is attached to the drive shaft 94d and is attached to the roller frame 81, and a gear 94h is attached to the other end of the drive shaft 94d passing through the roller frame 81. A gear 94j, a snap shaft 94k having the gear 94j attached to one end and rotatably supported by both roller frames 81 and 82, and a snap shaft 94k mounted on the snap shaft 94k between both roller frames 81 and 82, and A conveyance roller 94m provided with sprockets 94l at both ends, a pair of levers 94n rotatably attached to both roller frames 81 and 82 above the conveyance roller 94m, and these levers. A presser roller 94q is rotatably supported at the tip of the presser roller 94n and has locking portions 94p formed at both ends to engage with the tooth portions 94l, and a presser roller 94
The tension coil spring 94s is attached between both ends of the support shaft 94r of the roller q and appropriate positions of the roller frames 81 and 82, and is used to press the presser roller 94q against the conveyance roller 94m. Then, the contamination testing tape T with the adhesive tape 92 attached to the sample collection sheet material Tb is connected to the transport roller 94m and the presser roller 9.
After passing between 4q and converting the 90° angle,
The tape is supplied to the sub-tape transport mechanism 26.

In the belt feeding mechanism 24, a pair of parallel support plates 24b supporting four rotatable rollers 24a each on the upper and lower sides are fixed to the slide plate 22b via frame supports 24c.
In addition, a pair of upper and lower rotatable rollers 24a are installed at appropriate positions on the base plate 20a to support the frame support 24.
A pair of parallel support frames 24e that support four rotatable rollers 24a and four upper and lower tension adjustment mechanisms 28 are attached to the base end of the base plate 20a via frame supports 24d. At the same time, a drive motor 24f is installed at the entrance of the measurement chamber 5.
A pair of upper and lower drive pulleys 24 driven by
g and one rotatable roller 24a are installed. These rollers 24a and drive pulleys 24g each have a ring-shaped protrusion 24h formed at both ends, and a center part of each roller 24a and drive pulley 24g.
A pair of upper and lower timing belts 24i are wound around the belt. The contamination inspection tape T is sandwiched between both timing belts 24i, and is mainly conveyed by the lower timing belt 24i. The tension adjustment mechanism 28 also includes a bearing member 28 that supports a rotatable roller 28a.
b is provided in the longitudinal direction of a long hole 24j bored in the support frame 24e so as to be slidable along the guide rod 28c, and the bearing member 28b
and the support frame 24 on one end side of the elongated hole 24j.
Between the rod bearing 28d attached to e,
A compression coil spring 28e is attached to the guide rod 28.
The roller 28a is arranged to move from side to side so that the spring force of the compression coil spring 28e and the tension of the timing belt 24i are balanced.

In addition, the side plate arm 3 of the side plate sample collection device 3
As shown in FIG. 27, the base plate 30a of the No.
In addition, they are each supported via a bearing 30c by a vertical drive nut 31a that meshes with a square threaded rod 7d. The elevating mechanism 31 includes a vertical drive nut 31a, gears 31b and 31d, a speed reducer 31c, a coupling 31e, and a vertical drive motor 31f. Furthermore, the pair of upper and lower forward and backward movement mechanisms 33 installed on the base plate 30a each have a ball screw shaft 33a,
Ball screw nut 33b, gears 33c, 33e,
The base plate 30a is composed of a forward and backward drive motor 33d.
A pair of upper and lower guide rails 30d arranged parallel to
A slide plate 32b is attached so as to be movable in the horizontal direction via a sliding member 32a, and is configured to reciprocate along a ball screw shaft 33a attached to the base plate 30a via bearing members 30e and 30f. . These lifting mechanisms 3
1 and the forward/backward movement mechanism 33 are similar in configuration to the elevating/lowering mechanism 21 and the forward/backward movement mechanism 23 of the above-mentioned top plate sample collection device 2, so detailed description thereof will be omitted.

The slide plate 32b of the side plate arm head 32 has a tape cutting mechanism 35, a sub-tape transport mechanism 36, and a tape pressing mechanism 37 attached in this order from the base end side to the distal end side. This tape cutting mechanism 35 is installed on a cutter plate 35b attached to a slide plate 32b via a support 35a, and the other configuration is the same as that of the tape cutting mechanism 25 described above, so the same reference numerals are used in the description. omitted. Further, the sub tape transport mechanism 36 is installed on an intermediate plate 36b attached to the slide plate 32b via a support 36a, and the tape pressing mechanism 37 is installed horizontally at the tip of the slide plate 32b. There is. These sub tape transport mechanisms 3
6 and the tape pressing mechanism 37 are the same as those of the sub-tape transport mechanism 26 and tape pressing mechanism 27, so the same reference numerals are given and the description thereof will be omitted. Furthermore, the belt feeding mechanism 34 is similar to the belt feeding mechanism 24, so a description thereof will be omitted.

Further, the bottom plate sampling device 4 has substantially the same configuration as the top plate sampling device 2. That is, the tape pressing mechanism 27 of the top plate sample collection device 2
The pressure roller support part 8 of the bottom plate sampling device 4 is installed facing downward, whereas the pressure roller support part 8 of the tape pressing mechanism 47 of the bottom plate sampling device 4 is installed facing upward, and the pressure roller support portion 8 of the bottom plate sampling device 4 is installed facing upward. The tape pressing mechanism 47 of the bottom plate sampling device 4 is the one in which the tape pressing mechanism 27 is arranged oppositely to its center line.
matches.

Furthermore, the measurement chamber 5 is connected to the belt feeding mechanism 24, 34, 34, 44 at its entrance, and has a contamination density measurement chamber 5a surrounded by lead formed therein. A tape guide 5b is arranged passing through the contamination density measurement chamber 5a. Furthermore, a pair of upper and lower rollers 5c and 5d driven by a drive motor 5h are arranged at the exit of the measurement chamber 5, and the tape T for contamination testing is thrown into the waste box 6. A shooter 5g is installed with its upper end rotatable and its lower end supported via an adjustment plate 5e and a lever 5f.

Next, a case will be described in which the surface contamination density of the drum D is measured using the surface contamination density measuring device configured as described above.

Samples are collected from the top plate Da, side plate Db, and bottom plate Dc of the drum can D in parallel by each sampling device 2, 3, and 4, but since they are almost the same in all cases, the top plate Da is representative. To explain in detail how to collect a sample from
Then, operate the forward/backward movement mechanism 23 to bring the pressure roller support portion 8 at the tip of the top plate arm head 22 into contact with the top plate Da of the drum can D, and press the tape press mechanism 2
The pressure roller 84 at the tip of the pressure roller support part 8 is pressed against the top plate Da by the pressure cylinder 27b of 7.
While pressing with a predetermined pressure, the main tape transport mechanism 94, the sub tape transport mechanism 26, and the belt transport mechanism 24 are operated. At this time, contamination inspection tape T
The tip of the tape is located immediately in front of the tape cutting mechanism 25, and the contamination testing tape from this tip to the pressure roller 84 is an idle running range (for example, 200 mm) in which no sample is collected. Then, the contamination inspection tape T wound around the supply reel 27l is sent to the press roller 84 by the main tape transport mechanism 94, passing between the roller 85 and the press roller 88. In this case, the pressure roller 84 is pressed against the top plate Da of the rotating drum D with its axis substantially aligned with the radial direction of the top plate Da of the rotating drum D. The tape T is transferred while pressing the sample collection sheet material Tb against the top plate Da. As a result,
Contaminants from the arc-shaped (link-shaped) portion of the top plate Da adhere to the sample collection sheet material Tb in sequence.
The rotational speed of this drum D and the contamination inspection tape T
For example, the relationship between the sampling area of the drum D and the area of the contamination testing tape T is set to be 20:1. Therefore, on the top plate Da of the drum D, the main tape transport mechanism 94 is operated to slow down the tape feeding speed as the pressing roller 84 moves closer to the center of the top plate Da. When the rotational speed of the drum D is high, the oscillating drive device 27j is operated to tilt the axis of the pressure roller 84 at a predetermined angle from the radial direction of the top plate Da of the drum D, so that the contamination inspection tape T The sampling width may be narrowed.

Next, the contamination inspection tape T that has passed through the pressure roller 84 is passed through the roller 86 and the pressure roller 8.
9, the adhesive tape 92 wound around the tape reel 93 is sandwiched at the same time, thereby adhering the adhesive tape 92 onto the sample collection sheet material Tb of the contamination testing tape T. . Then, the contamination inspection tape T to which this adhesive tape 92 is attached is wound around the drive roller 94h of the main tape transport mechanism 94, passes between the transport roller 94m and the presser roller 94q, and is further rotated in the transport direction by 90 degrees. The tape is twisted to maintain a horizontal state, and is sandwiched between the sub-transport roller 26f and presser roller 26h of the sub-tape transport mechanism 26, and is transported to the tape cutting mechanism 25. In this way, the contamination test tape T is transferred from the supply reel 27l to the tape cutting mechanism 25, but in this case, rollers 85 and 86 having sprockets 85a and 86a at both ends are arranged before and after the pressure roller 84. A contamination inspection tape T is held between press rollers 88 and 89 having locking portions 88a and 89a at both ends, and a core material Ta for conveying the contamination inspection tape T.
The locking holes Tc formed on both sides of the tape engage with the sprockets 85a and 86a of the rollers 85 and 86, so that the contamination inspection tape T does not meander in its width direction and can be rolled smoothly. You will be guided. Therefore, when the contamination test tape T is pressed against the top plate Da, the contamination test tape T does not move in the width direction of the pressing roller 84, so that the sample collection range of the top plate Da is prevented from shifting. can be prevented,
This allows for more accurate identification of contaminated locations.
In addition, the drive roller 94 of the main tape transport mechanism 94
h, conveyance roller 94m and sub tape conveyance mechanism 2
The sub conveyance rollers 26f of 6 each have sprockets 94g, 94l, 26e at both ends, so when the contamination inspection tape T is conveyed by the rollers 94h, 94m, 26f, , 26e are engaged with the locking holes Tc of the contamination test tape T, and the contamination test tape T can be transported reliably and at a predetermined feed speed, and the contamination test tape T can be moved in its width direction. Meandering can also be prevented. Furthermore, when the contamination inspection tape T is transported from the main tape transport mechanism 94 to the sub tape transport mechanism 26, it is twisted by 90 degrees, but in this case, both the transport mechanisms 94,
26 between the main tape transport mechanism 94 and the sub tape transport mechanism 26.
By appropriately slackening the contamination inspection tape T, it can be transported smoothly.

Next, the pressing roller 84 is appropriately moved in the radial direction of the top plate Da of the drum can D by the forward and backward movement mechanism 23, and when the sample collection operation is completed over the entire surface of the top plate Da, the lifting mechanism 21 is moved. Therefore, after releasing the pressure roller 84 from the top plate Da, the tape transport mechanisms 94 and 26 described above
Fast forward the contamination inspection tape T. Then, sample collection range of contamination test tape T (e.g. 600mm)
When the terminal end of passes through the tape cutting mechanism 25,
The tape T for contamination inspection is cut by the tape cutting mechanism 25. As a result, the length of the cut contamination inspection tape T is the sum of the free running range and the sample collection range (for example, 800 mm).

Next, the cut contamination inspection tape T is
It is guided into the measurement chamber 5 through a pair of upper and lower endless timing belts 24i that are run by the drive motor 24f of the belt feeding mechanism 24. The free running range of the contamination test tape T passes through the measurement chamber 5 as it is, and then, when the sample collection range of the contamination test tape T reaches the contamination density measurement chamber 5a of the measurement chamber 5, the drive motor 24f and The contamination test tape T is intermittently fed by a drive motor 5h installed on the exit side of the measurement chamber 5 at predetermined intervals (e.g.
Measure the contamination density every 20mm). thus,
When the measurement of all sample collection areas is completed, the contamination test tape T leaves the measurement chamber 5,
It is stored in the waste box 6.

As described above, the sample collection from the drum D and the measurement of the contamination density are carried out smoothly.
In this case, the tape T for contamination inspection after sample collection is cut by the tape cutting mechanism 25 and then sent to the measurement chamber 5. Samples can be collected continuously from the plate Da, side plate Db, and bottom plate Dc, resulting in extremely high work efficiency. In addition, the contamination inspection tape T is pressed against the surface of the drum can D while being conveyed, and the contamination inspection tape T is
Since the contact surface between the drum D and the drum D changes sequentially, even if a part of the surface of the drum D is contaminated with contaminants, the contamination range will expand due to contact with the contamination inspection tape T. Not only is there no
Of the sample collection range of the contamination test tape T mentioned above,
Since the location where the contaminant is attached is known, it is easy to identify which part of the drum D is contaminated.

In addition, samples were collected from the side plate Db and bottom plate Dc of the drum D, and the contamination density was measured using the top plate Da mentioned above.
Although it is omitted because it is the same as in the case of , in the case of collecting a sample from the side plate Db, the lifting mechanism 31 moves the pressing roller 84 in the vertical direction to continuously carry out the collecting operation. Furthermore, the present invention can be similarly applied to surface contamination measurement and decontamination of containers or objects other than drums, and it goes without saying that the present invention can also be applied to toxic substances other than radioactive substances and toxic microorganisms as contaminants. stomach.

"Effects of the Invention" As explained above, according to the present invention, a sample collection sheet material having a width narrower than the transporting core material is provided approximately in the center of a long transporting core material, and Since a locking hole is formed in the side edge of the core material to engage with a sprocket for guiding and conveying the core material for conveyance, it is possible to engage the locking hole of the core material for conveyance with the sprocket. By guiding and conveying the conveying core material, contaminants adhering to the sample collection sheet material provided approximately at the center of the conveying core material are continuously collected and conveyed to reduce the contamination density. It is easy to measure, easy to handle, improves measurement efficiency, and allows easy identification of contaminated locations.
It also has excellent effects such as removal of pollutants.

[Brief explanation of the drawing]

Figures 1 to 33 show an embodiment of the present invention. Figure 1 is a perspective view showing an example of the contamination inspection tape of the present invention, and Figure 2 shows the overall configuration of a surface contamination density measuring device. 3 is a front view of the top sample collection device, FIG. 4 is a plan view of the top sample collection device, FIG. 5 is a front view of the top arm, and FIG. 6 is a front view of the top arm. , FIG. 7 is a side view of the top plate arm, FIG. 8 is a sectional view taken along the - line in FIG. 5, FIG. 9 is a sectional view taken along the - line in FIG. 5, and FIG. A side view of the tape pressing mechanism, FIG. 11 is a sectional view of the sub-tape transport mechanism, FIG. 12 is a view taken along the - line in FIG. 10, and FIG. 13 is a view of the presser roller 8.
9, FIG. 14 is a view taken along the - line in FIG. 10, FIG. 15 is a sectional view of the pressure roller support, FIG.
The figure is a sectional view taken along the - line in Figure 3.
The figure is a cross-sectional view taken along the - line of Figure 3.
Figure 9 is a cross-sectional view taken along the - line in Figure 3;
Figures 0 to 29 show the side plate sample collection device; Figure 20 is a front view, Figure 21 is a plan view, Figure 22 is a front view of the side plate arm head, and Figure 23 is a plane view of the side plate arm head. Figure 24 is a front view of the side plate arm, Figure 25 is a plan view of the side plate arm, Figure 26 is a sectional view taken along the - line in Figure 24, and Figure 27 is a sectional view of the side plate arm.
FIG. 28 is a front view of the sub-tape transport mechanism and tape cutting mechanism, and FIG. 29 is the − of FIG. 28.
30 is a front view showing the bottom plate arm head of the bottom plate sampling device, FIG. 31 is a front view of the measurement chamber, FIG. 32 is a side view of the measurement chamber, and FIG. 33 is FIG. 31. of-
It is a sectional view along a line. T...Tape for contamination inspection (tape for sample collection),
Ta... Core material for transport, Tb... Sheet material for sample collection, Tc... Locking hole, 26e... Teeth (sprocket), 85a, 86a... Teeth (sprocket), 94g... Teeth ( sprocket), 94l...
...Teeth (sprocket).

Claims (1)

[Claims] 1. A sample collection sheet material having a width narrower than that of the long transporting core material is provided approximately in the center of the long transporting core material,
A tape for contamination inspection, characterized in that a locking hole that engages with a sprocket for guiding and conveying the core material for conveyance is formed on a side edge of the core material for conveyance.