JPS5844376A - Collecting and measuring apparatus for radioactive gas - Google Patents

Abstract

PURPOSE:To facilitate the measurement of the concentration of iodine at the time of trouble, by arranging a holding member, a collecting member and a slide function sequentially, in this order, along the circumferential path of the rotating motion of a filter cartridge conveying mechanism. CONSTITUTION:A swivelling arm plate 31 is made to swivel at an angle of about 180 deg. from a holding member 8 to a slide mechanism 60. When a conveying member 30 is turned clockwise and a material hand mechanism 36 is brought to a collecting member 4, the plate 31 is stopped. When the conveying member 30 is turned clockwise again and the material hand mechanism 36 is brought onto a slide mechanism 60, the plate 31 is stopped. After the conveying member 30 catches a filter cartridge 5 at the holding member 8 in this way, the plate 31 turns at an angle of 180 deg. clockwise to convey the cartridge to the collecting member 4 and the slide mechanism 60. It turns again for return at an angle of 180 deg. thereafter.

Description

[Detailed description of the invention]

The present invention relates to an apparatus for automatically collecting and measuring radioactive gases. Prompt monitoring of the atmosphere inside the reactor containment vessel when a nuclear reactor accident occurs is extremely important, not only because it makes it possible to estimate the scale of the accident, but also because it provides powerful information for determining appropriate measures to deal with the accident. It is. Due to fuel rod damage

[A very important fission product released is highly volatile iodine. and noble gases (Kr, Xs, etc.). These radioactive gaseous substances can cause damage to fuel rods! ! This is important not only for estimating degree A, but also for evaluating the effects of radiation on the human body. Among the internal exposures received when inhaling released fission products, radiation from radioactive iodine is predominant. However, sampling the air inside the reactor containment vessel during an accident has the following two major differences compared to normal sampling. (1) The conditions of the air to be sampled are severe (and the concentration of radioactive gas substances in the air is extremely high).For these reasons, it is difficult to overcome the various abnormal conditions at the time of an accident and measure the iodine concentration. The present invention was made in view of these demands, and an object of the present invention is to provide a radioactive gas collection and measurement device that can easily measure iodine (i.e., radioactive gas) at the time of an accident. According to the present invention, a plurality of filter cartridges made of a radioactive gas collection material are housed and the filter cartridges are automatically brought into a state ready to be transported to one unit. U, a storage section and a pipe through which a sample gas containing radioactive gas is guided) a radioactive gas collection section that can be airtightly attached to the filter cartridge and the pipe, which is covered with CII; a filter cartridge conveying mechanism that has an arm capable of grasping the cartridges and rotates to convey the filter cartridges one by one from the storage section to the collecting section; The filter cart 11. which collected the radioactive gas from the section. The filter cartridge is provided with a slide mechanism for transporting the filter cartridge, a measuring section in which the filter cartridge is set at a measurement position by the slide mechanism, and the filter cartridge is arranged along approximately the circumference of the rotational motion of the filter cartridge and the transport mechanism. This is achieved by arranging the storage section, the collection section, and the slide mechanism at the same location. Next, embodiments of the * invention will be described in detail based on aspect (ii). FIG. 1 is a schematic diagram of a system in which the radioactive gas collection and measurement device of the present invention is used. The sample air is guided into the pipe 1 from within the containment vessel of the reactor, for example. This piping IK
G! First, a dehumidifier 2 and a heater 3 are sequentially installed. As a remover 2. For example, a water-cooled cooler, an air-cooled cooler, a semipermeable membrane dehumidifier, or an F-dryer can be used. This dehumidifier 2 is provided in order to remove moisture V# from sample air containing a large amount of moisture, so as not to reduce the ability to collect elements in the sample air in the collection section, which will be described later. It is something that The sample air is cooled and its temperature is lowered in the pipe line guided from inside the reactor containment vessel into the pipe l or by passing through the dehumidifier 2. In that case, the relative humidity of the sample air increases, so in the present invention, the sample air is heated to about (capital) °C with heating rI3 in order to uncover the relative humidity and maintain a high reagent efficiency of iodine. are doing. A collection section 4 is provided in the pipe 1 downstream of the heater 3. In this collection section 4, iodine in the sample air is collected by adhering to a filter cartridge and difiKt. This filter cartridge and diS are composed of a collection material consisting of activated carbon, impregnated activated carbon, or silver zeolite. The filter cartridge used in vermilion is passed through and set in the okara collection section 4 in the collecting section 4.The sample air flows through the filter cartridge and the okara collection section 4 in the collecting section 4.
Is) Elements in the air are adsorbed to the collection material in the cartridge and the filter and collected. The ridge sample air that has flowed through the collection s4 is sucked in by the pongua via the flow rate measurement s6 and finally returned to the containment vessel. The radioactivity level of the adsorbed iodine is monitored by the level monitor 9 in the collecting section 4 of the filter car. After the iodine collection is completed, the flow of sample air is stopped, and purge air or nitrogen or the like is supplied into the pipe 1 via the purge gas supply pipe 17. The water flows through the filter cartridge and 5. This blows away rare gases other than iodine that have adhered to the collection material of the filter cartridge and the filter cartridge 5. After the purging is completed, the cartridge and the filter cartridge 5 are moved to the measuring section 21K.
The measuring unit 21 is equipped with a high level monitor W and 11 low level monitors. A filter cartridge is selected depending on the size of the cartridge, and a cartridge is provided in the storage section 8. (6) Several tens of cartridges and cartridges 5 are stored, and the above-mentioned measurement operation is repeated as these cartridges and cartridges are used up. Each level monitor 9#10, 11 has a measuring device 13.
are connected to each other, and the outputs of these measuring instruments 13 are led to a computing unit 14. Therefore, in this calculation D14, the iodine concentration in the sample air is calculated based on the output of each level monitor 9elO, tl and the output of the flow rate measuring section 6. After the measurement, each filter cartridge 5 is automatically transported from the measuring section 21 to a cartridge storage 111 and discarded. In addition, in 1st V4, 16 is piping 1. The purge gas supply pipe 17 and the sample air atmospheric discharge pipe 19K are each provided with a solenoid valve, and 18 is a pressure reducing valve provided in the pipe IK.The sample air has a higher pressure (4 kg/mG) than this pressure reducing valve 18K. The pressure is reduced from to about atmospheric pressure. Also, %15 is for each level monitor □, evening 9.10, 1lt-
Each is covered by a lead shield. Figures 2 through 8 are schematic diagrams of a first embodiment of the radioactive gas automatic collection and measurement apparatus according to the present invention. First, refer to Figure @2. This FIG. 2 shows a plan view of the measuring device. This measuring device has a basic frame structure 120, and on top of this basic frame structure 120 there are a collection part support frame structure 100, a constant part support frame structure 11O, a filter cartridge, and a conveyor part support frame. Construct 130. A filter cartridge, a di-storage support frame structure 140 and 74/a filter cartridge, and a di-slide mechanism support frame 150 are provided, respectively. The frame structure 1oo Vc has a collection unit 4, the frame structure 110 has a measuring unit 21, the frame structure 130 has a filter car), a conveyor s30, and the frame structure 140 has a filter cartridge, The storage section 8 is
A filter cartridge slide mechanism ω is supported in each of the seven frame members 150.Storage portions 8.
The collection section 4 and the slide mechanism 4 are disposed on the shoes along the circumferential path RK of the rotational movement of the conveyance section. 3114 and @
As shown in detail in Sa, the filter cartridge, di-54-
It mainly consists of a storage tube. This storage tube is open at both ends, and can store a filter cartridge and a filter cartridge through the upper S opening, but is designed to prevent the cartridge and cartridge from falling out from the lower opening. In addition, the storage section 8 contains a 4-ta-shi, a shaft device that can be moved up and down by this ta-shi, and two rims, a tosui, and a chi-hen. The shaft unit is driven by the motor 88C, enters the storage cylinder from the lower opening of the storage cylinder, and then, by means of the door 92, the filter cartridge and the shaft 5 stored in the storage cylinder are driven by the motor 88C. push upward. In the storage section r, in this embodiment, there are (capital) cartridges, :) B
When the fist cartridge, which can be stored in a large amount, is pushed out from the upper opening of the storage tube 5, it causes
90, and the drive of the motor is stopped. From there, one cartridge 5 is placed in a state where it can be transported by a cartridge and a mail sending unit 30, which will be described later.
l#, 91 is for detecting the lower limit position of the shaft device (9). As shown in detail in FIGS. 4 and 116, the collecting section 4 mainly includes a cartridge, a lower part 79 for receiving a cartridge, and an upper fitting 804 for receiving a cartridge and a lower fitting 79 through a through hole 79A. 5 and O surrounding this through hole 79A.
-The ring is installed. Furthermore, 1 through hole 79A
A conduit 81 constituting a part of the piping 1 is connected to. The lower metal fitting 79 is supported by a rectangular movable frame 76. Guide pieces 77 are fixed to each side of the movable frame 76K. These guide pieces 77 are fixed to the support frame respectively.
: A curved guide rod 78 passes through it. Note that the support frame B is fixed to the base frame structure 120K. On the other hand, the bottom of the movable frame 76 is coupled to the movable shaft of the electric cylinder 75. This electric shilling π is supported by the basic frame structure 120 i'j via the support frame 82. A spring gap is inserted in the bottom of the movable frame 76. Furthermore, a moving rod r is coupled to the movable shaft of the electric cylinder 5. The movement of this moving rod r is the upper limit Jv) Sui, Chita 5o (l
O) and the lower limit is detected by Riki, Tosui, and Chi96. - The upper metal fitting for the cartridge and the jig is formed in the shape of a cylindrical container and similarly has a through hole 80A in the bottom 11. This through hole of 80mm is inserted into the upper metal fitting 80.
Rubber pad and Kin 85 are installed. A level monitor 9 is inserted inside the upper metal A80. A lead shield 15 is attached to cover the level monitor 9. The upper fitting 80 and the lead shield 15 are supported by the frame structure Zoo K. Furthermore, a pipe l is connected to the metal fitting 80 through a lead seal y ts t#. Note that the level monitor 9 consists of an ionization chamber. Therefore, a filter cartridge and a conveyor 1130, which will be described later,
As shown in 1Ia11, it is assumed that the 74 kl cartridge and the cartridge 5 are transported and placed on the lower metal fittings. Then, by driving the electric cylinder 5. The movable frame body 76 is moved upward using the guide rod as a guide, and the lower metal fitting 79 is brought into close contact with the upper metal fitting.
Even after they are in close contact, the electric cylinder 1 pushes the movable frame 76 upward, but the pushing force is absorbed by the spring.
, the pressing force prevents the ↑:1 convergence part 4 from being damaged, and then, by the action of the upper limit switch 950, the upper limit of the movable axis of the a-shift cylinder (i.e., the movement @ 4J197
(upper till) is detected, and the electric cylinder 75 is stopped. After that, sample air from each house piping 1 to between the upper metal fittings and the level monitor 9, through J hole 80A, 74 filter cartridge 5. Flow sequentially flows through the through holes 79 and the conduits 81. At that time, the sample in the nitrogen atmosphere is deposited and collected on the filter cartridge 5).In that case,
Level monitor 9 allows samples to flow from cartridges, pipes and pipes! Radioactivity in the air will be monitored. Thereafter, by sequence control, the movable shaft of the electric cylinder 75, that is, the lower metal A79 is lowered downward, and the lowering is stopped. When detected by the switch 96, it is stopped and returned to its original state 11.The filter car > VW dislide mechanism is mainly shown in detail in Figures 2 and 7. A movable member M63 having a hole, a shaft connected to this movable plate, a guide plate 64 having a hole on which the movable plate 8 is placed, and a movable member 863 that drives the shaft 62. It consists of a motor 61 that slides on a guide plate 64. The motor 61 is fixed to a support frame 70, and this frame 70 is fixed to a seven-frame sliding body 150. The guide plate 64 passes through a measuring section 218, which will be described later, and the kneading machine is equipped with 11 mm and toss switches 65, 66, and 67. When the filter cartridge 5 of the collection unit 4 is moved onto this slide mechanism ω by the transport unit 30, 31 = traverse, the filter cartridge 5 is transported directly above the hole cylinder in the pronated state in Figure 17. , the edge of the conveying section 30 is marked, the material node mechanism is replaced, and the filter car) +
1, the jig 5 is dropped into the hole cylinder of the movable plate 8. Thereafter, by sequence control, the shaft 62, that is, the movable plate ω, is moved in the direction of arrow A without operating the motor 61, and at the same time, the filter cartridge, :) in the bore cylinder is also carried in the direction of the arrow on the guide plate 0. 0 movable plate 63 is 114
, ) When reaching the temperature 7, the operation of the motor 61 is stopped, and then the radioactivity of the filter cartridge 5 is measured by the measuring section 21 K (13). At that time, filter cartridge. is brought to the center of the measuring section 21. In FIG. 7, (3) shows this measurement state. After the end of the measurement, the motor 61 is operated again, and the movable plate B is moved in the direction of arrow B. It is detected that the movable plate B has reached the position where the hole tube of the movable plate 63 and the hole 69 of the guide plate example coincide with each other by the cooperative action of the protrusion ξ, tosui, and chiro 6 provided on the movable plate 63K. and the motor 61 is stopped again. In FIG. 7, (C) shows this state. Due to the coincidence of the hole cylinder of the movable plate 63 and the hole θ of the guide plate 6, the filter cartridge and the filter cartridge are connected to the filter cartridge and the filter storage part 12 through the hole cylinder. ’. Thereafter, the operation of the motor 61 is restarted, the movable Iida is moved in the direction of the arrow C, and the protrusions provided on the movable plate are moved 5, 5, 5, 5, 5, and 5, and the motor 61 is stopped and movable. Plate 8 is in its original state (7th s(2)
) 11) Returning the filter cartridge 1130, as shown in detail in FIG. 2a and FIG.
, the material hand mechanism shaft, the turning shaft (14) 44, the Geneva mechanism for driving the turning shaft (motive wheel 4 and slave mJ48), and the Tanabasha that drives the driving wheel 47 and the material hand mechanism 36. It is made up of a motor. Open the material hand mechanism. Two wooden arms intersecting each other 41, 4! An arm plate 31 rotatably supports these arms 41 and 42.
The fixed shaft 35 to which the VC is fixed, the tension spring 39 connected between the arms 41 and 42, and the arms 41 and 42 in the same manner! j! The rotary rod blade is rotated by a tanabata 34 via a shaft 37. In addition, 3
3 is the bearing. 40.45.46 and 49 beams ξy) Sui, 1,000% kudzu is a counterweight. In material hand mechanism 361C, two wooden arms 4
1 and 42 are brought into a closed state by the action of a tension spring 390. -v The hand mechanism arm is brought to the filter cartridge, the storage *S, the yarn catching section 4 or the slide mechanism ω, and when it is necessary to open it, the motor arm operates to rotate the rotary rod arm 41. , 42 are opened against the force of tension spring 390. 7-When 41.41 is opened,
The operation of the motor M is stopped due to the contact with the motor 32. Therefore, the operation of the motor M is stopped. Material hand mechanism father-in-law is filter cartridge. The filter cartridge and filter cartridge 5 can be stored in the filter cartridge storage section 8. In the collecting section 4, the filter cartridge 5 can be once tightened and then gripped again, and furthermore, in the entry/ride mechanism 601C, the filter cartridge can be moved. The rotating arm @ 31 is shown in FIG.
Slide mechanism 60f from storage section 8! It will make about 1800 turns. This turning drive is performed by rotating the turning shaft 44 by the motor 50 via a Geneva mechanism consisting of a prime mover 47 and a driven wheel. Transport 1B
The first position state of 30 is material hand mechanism storage s
8, which is the balance weight 43 and l
, Tosui, and Chi 45 are detected. This causes the motor father to stop. In the second cause, 11
When the feed section is rotated clockwise by the operation of the motor and the material hand mechanism is brought to the collection section 4, this position is also in the equilibrium state. 1. ) Detected through cooperation with the switch.
Thereby, the motor lead is stopped again. This positional part becomes the second position state of the transporting part If1.Next, by restarting the operation of the motor, the transporting part s30 is further rotated clockwise, and the material hand mechanism iris is dropped onto the slide mechanism. This positional state is detected by the cooperative action of the balance weight C and Rimi, Tosui, and Chitsu. From that k,
The motor connection is again stopped. This position state becomes the third position state. In this way, the conveyor @31) moves the filter cartridge in the storage section 8, the bale holding the filter cartridge 5, rotates 180 degrees clockwise, and collects the filter s4 and the slide mechanism 601C.
transport. Then, it returns to 180° and rotates again.Measure! 1121 is as shown in detail in Figure 3.
t are arranged vertically facing each other, and a guide plate 6 of the slide mechanism ω is arranged between them.The high level monitor 10 consists of an ionization chamber, and the low level monitor 11 consists of a NaI scintillation detector. A filter cartridge consisting of the filter cartridge 5 is carried between the two layers 10 and 110 by a slide mechanism 60 and measured. Next, a series of operations of the above-mentioned automatic collection column determination device will be explained. In this measuring device, various motor control beams i,
Sequence control 7 is performed based on the actions of Tosui and Chi. In the state before starting measurement, the material hand mechanism is placed in the storage aS, and the arms 41 and 42 are opened. If you turn on the power in this condition, 1. When the filter cartridge 5 does not transmit a detection signal, the motor is operated to push the filter cartridge 5 upwardly in the housing cylinder group. That's k6. If the filter cartridge comes into contact with the filter cartridge, screwdriver, or wheel, the motor will stop operating. The motor U of the conveyor 1130 is operated, the material hand mechanism door is closed, and the arms 41 and 42 grab the filter cars F and S. Riki, Tosui, and Chi 40 confirm that the material hand mechanism door is closed. When detected, 4
-The firefly is stopped by the evening wing. (18) The owner was made to drive the whetstone, and while holding the filter cartridge and the wheel, the material hand base part was attached to the metal fitting 79 of the collection unit 4.
t 80 B K carried. So, the material hand mechanism was opened, the filter car) I+, and the 5 were wL.
As shown in Figure 6, the metal fitting 79 is placed on the metal fitting 79. Then, the electric cylinder is operated to bring the metal fitting 79 into close contact with the metal fitting 81C, and then the sample 9 is allowed to flow directly through the filter cartridge, and the iodine is supplemented. A purge gas is supplied to the primary tank where the gas is collected, and the rare gas adhering to the filter cartridge and pipe is blown away. Then, by operating the electric cylinder 5 again. The metal fitting 79 is lowered. After the material hand mechanism has collected the iodine, grab the filter cartridge. Then, by driving the motor, the material hand mechanism is brought onto the slide mechanism ω, and the arms 41° and 42
1 Open the cartridge and drop it into the hole of the movable plate of the slide mechanism After the measurement is completed between the level monitor IO and the low level monitor 11, the cartridge is stored in the storage section 12 through the hole 69 in the guide plate by the operation of the mokro 1 as described above. On the other hand, when the material hand machine!36 releases the cartridge :), it turns 180 degrees in the direction of the arrow in Figure 2 and returns to its original state! Return to l (cart, storage section 8 position Ii). With this 'IK', - collection/measurement cycle is completed. Figures w49 to 11 are schematic configuration diagrams of the second embodiment of the present invention. The basic structure is a filter cartridge storage section 8. Collection part 4. Filter Cart II: This is the same as the first embodiment in that it includes a system slide mechanism ω, a 1111 fixed part 21, a filter cartridge, and a conveyor part. However, the specific structure of each main component is slightly different from the first embodiment. The configuration will be briefly explained below, focusing on the differences. In the filter cartridge storage section 8, the filter cartridge and the filter cartridge 5 are stored in the storage section 287, and are taken out from the lower opening of the storage tube 287. That is, the filter cartridge and the filter cartridge 5 in the storage tube 287 are From the bottom, motor 2
It is projected by a projection rod 289 driven by 88 and carried out onto the conveyor table 141. - Due to the sliding, the cart and the jig b are set in the conveyor shape 111 (see No. 109). Collection s4 is almost the same as the embodiment of $1 (11th
(see figure). In this second embodiment, the filter cartridge transport section I is arranged in a vertical configuration so as to be movable up and down. That is, the motor 50 is fixedly supported by a support frame 204, and this support frame 204 is supported by a guide piece 203 fixed thereto.
The fixed frame 201K can be moved up and down by an electric cylinder 205 under the guidance of a fixed guide rod 202 (see Figure 10). By operating this electric cylinder 205, the filter cartridge and the conveying section (materials) can be moved up and down.
Therefore, even if the installation heights of the storage SS and the collection section 4 are different, it can be well adapted. This filter cartridge, the di-slide mechanism mark, is a working filter cartridge that rotates once to complete one conveying period. A guide plate 264 and a movable 4 that receives the filter cartridge 6 from the guide plate 264 and the kit conveyor 6 on the guide plate.
[263] and an electric cylinder 261 connected to this movable plate via a shaft 262 (see 1011); a filter cartridge;
When the filter cartridge and filter cartridge are placed on the movable plate 263 by the filter transport 1130, the movable plate is pulled towards the electric cylinder IIK by the operation of the electric cylinder 261. Ru. III fixed f! , the filter cartridge is in its original condition (
It is returned to the receipt form 1) and is transported by the transport section 30K to a filter cartridge storage section 12, which will be described later. The measuring part 21 is the same as in the second embodiment. The filter cartridge storage part 12 is mainly composed of one 11II-mouth storage @ 210 (see 1111@) in this second embodiment. The filter cartridge and cartridge conveyed from the movable plate 21111 of the slide mechanism are stored in the storage cylinder 21O from the upper sR opening (22).The shaft 212 can enter into the storage cylinder 210 from the lower opening thereof. There's 'C. shaft 212
is coupled to a spindle 21B which is rotationally driven by a motor zxlk via a coupling piece 21B:! - When the spindle 2115 rotates, it is moved up and down.As a result, the shirt 212 enters the storage tube 21o and pushes up the cartridge inside the storage tube 210. That K
From there, the filter cart 1J, the discarded yAK, and the cartridge stored in the storage section 210fiK. can be taken out. In addition, 214 is the shaft 21
20 bearings. Therefore, the transport section (material) is the transport platform 1 in the storage section 8.
Grasp the filter cartridge on 41 with its gusset 1J Al hand l11136, 9G'l! After the sample is transferred to the collecting section 4 and collected with iodine in the nitrogen atmosphere, the slide ta111 #6o is transferred to the movable mounting 211! IJ=KIl
After determining the concentration of iodine collected in one filter cartridge at 11i21, it is first transported to the storage section and disposed of in the storage section 210.After that, 90
@Totente. It returns to the storage section 8 again and begins preparations for the first measurement cycle.In this way, one measurement cycle ends. Note that all controls are performed by sequence control. FIGS. 12 to N14 are schematic configuration diagrams of a third embodiment of the present invention. In this third embodiment. The structures of the filter cartridge, the storage section 8, the filter cartridge, and the slide mechanism ω are fundamentally different from those of the first embodiment. Therefore, the structures of both will be mainly explained below. In the filter cartridge storage section 8, the filter cartridge and the filter cartridge are stored in a storage tube 387. A rotary disk 310 having a hole 311 is arranged below the storage tube 38 . This rotating disk 310 is a stand 31
A one-rotation disk 31Q placed on the top of the rotor 2 is rotationally driven by a motor 313. The rotating circle @
A hole 314 is formed on the circumference of the hole 311 of 310. Therefore, the rotary disk 3 is
10, the filter cartridge is dropped into the hole 311,
Then, when the rotating disk 310 is driven to rotate. The filter cartridge is conveyed by its rotating disk 310 and dropped onto the frame 14θ from the hole 314 of the stand 312. Below the hole 314 of the stand 312 is the material hand mechanism of the filter cartridge conveyance mechanism (9). is on standby, ready to send the monks. On the other hand, in the third embodiment of the filter cartridge slide mechanism, a rotating disk 30 having a hole 301 is used.
0, a motor 303 that rotationally drives this rotating disk 300 via a Geneva mechanism 304, and a stand 302 fixedly arranged below the rotating disk 300. This stand 302 has a notch 3 at a point leading to the storage section 12.
06 is formed. This is the support frame for the 305 motor 303. Therefore, the slide mechanism mark is applied to the filter car ()+1. When the filter cartridge receives a certain amount of friction, the filter cartridge is rotated 900 times and the filter cartridge is set at the measuring position of the measuring section 21. ＃ll Go Go Sara K 9
Rotate by 0° and insert the filter cartridge into the storage room B12 from the notch 30g of the stand 3o2. In addition. 11E 12 @ K Oite-350ha storage @ 12
Jri 74 le/ * - Tori, J) It's a dropout (25) That's all Kl! As explained above, full automation is possible with the radioactive gas collection and measurement device according to the present invention. Even in the event of a nuclear reactor accident, the presence of radioactive gas, especially iodine, in the containment vessel can be confirmed, and the presence of air in the containment vessel can be confirmed by installing the filter cartridge in the storage part and removing it from the storage part. Collecting and confirming the radioactive gas can be carried out without any manual effort, thereby reducing the radiation exposure of one worker and saving labor. Note that the measurement system according to the present invention can be used not only during a nuclear reactor accident but also during normal times, and can be applied not only to the atmosphere inside the containment vessel but also to other locations.

[Brief explanation of the drawing]

1, 111 is a schematic diagram of a radioactive gas collection and measurement system. jII2IllI to 1114■ indicate the first embodiment of the radioactive gas collection and adjustment device according to the present invention;
is its approximate plane a! i, ll3I11 is a partial cross-section of the genus (26). Figure 4 is a view taken along the arrow A-A in Figure 1, and #! Figure 5 shows an example of the filter cartridge and conveyance section in the radioactive gas collection and measurement device, (4) is a schematic plan view thereof, (81
is a partially sectional front view of the same, and Figure 6 shows the collection section of the radioactive gas collection and measurement device! 11B enlarged sum, By diagram is a schematic front view of the filter cartridge slide mechanism in the radioactive gas collection and measurement device.% (&), (B)
, (Q is a diagram to explain the different operating states, and Figure 8 is a filter car in the radioactive gas collection and measurement device)! FIG. 7 is a schematic configuration diagram of the storage section. Figures 9 to 11 show a second embodiment of the amount of radioactive gas collected and measured values according to the present invention. It is a partially sectional side view. Ii! Figures 12 to II and 14 show the third implementation of the radioactive gas collection and measurement device according to the present invention, *12111
Figures 11 and 13 are a partially sectional front view thereof, and Figure 14- is a partially sectional side view (2) thereof. l...sample air piping, 2...dehumidifier, 3...
Heater, 4... Collection section, 5... Filter cartridge,
Ji. 6...Flow rate measuring section, 8...Filter cartridge, storage section, 9...Level monitor, 10...High pressure monitor. DESCRIPTION OF SYMBOLS 11...Low level monitor, 12...Filter cartridge, storage part, 13...Measurement 11.14-...Arithmetic unit, 15...Lead shield 117...Purge gas supply pipe, 18...・Reducing valve, 21...Radioactivity measuring section・ Figure 7z Figure 5 Figure 6 Figure 7 Figure (A) (51o 8
July resistance diagram f'' 12 Figure □□-'' = 404 '4' 74 Continuation of figure 1 page 0 Inventor: Yuji Noda, 2-1-82 Watanabe-dori, Chuo-ku, Fukuoka City, Kyushu Electric Power Co., Inc. 0 Invention Satoshi Imai 1-6-1 Otemachi, Chiyoda-ku, Tokyo Japan Atomic Power Co., Ltd. Applicant Hokkaido Electric Power Co., Inc. 1-2 Odori Higashi, Chuo-ku, Sapporo @ Applicant Kansai Electric Power Co., Inc. Osaka City Kita 3-3-22 Nakanoshima, Ward ■Applicant: Shikoku Electric Power Co., Ltd. 2-5 Marunouchi, Takamatsu City ■Applicant: Kyushu Electric Power Co., Ltd. 2-1 Watanabe-dori, Chuo-ku, Fukuoka-shi 1-6 Otemachi, Chiyoda-ku, Tokyo Address No. 1'・

Claims (1)

[Claims] 1) A filter car F in which a plurality of filter cartridges made of a radioactive gas collecting material are housed. r) A filter cartridge, which automatically brings the filter cartridge into a ready-to-transport state, is connected to a pipe KJI through which a sample gas containing a radioactive gas is guided, and the filter cartridge and the pipe are arranged in an airtight climate. The collection part k19 has a radioactive gas collection part that can be attached to the storage part, and a γ-me that can grip the filter cartridge, and performs a rotational movement to remove the filter cartridge and the part one by one from the storage part. a filter cartridge that collects the radioactive gas from the collection section by a transport mechanism, a filter cartridge slide mechanism that transports the filter cartridge, and a transport mechanism that transports the filter cartridge; and a measurement section in which the camera is set at the measurement position,
A radioactive gas collection and measurement device characterized in that the storage-2 collection section and the slide mechanism are arranged in this order along a circumferential path of rotational movement of the filter cartridge transport mechanism.