KR100605085B1 - Radioactive wast control inspection for life - Google Patents

Abstract

The present invention relates to a radioactive waste management lift. The present invention is to measure the weight and surface radiation rate of the waste drum while fixing and lifting the radioactive waste drum, the drum holder for fixing the waste drum, is inserted into the guide groove of the first and second guide members movably A moving member having a rotating roller rotatably provided at a rear surface thereof; First and second holder members which are pivotally arranged on both sides of the front surface of the movable member to stably hold the waste drum and are formed in a semicircular shape; And a closing and holding member formed integrally with each other of the distal ends of the first and second holder members, the closing part having a pin insertion hole formed therein, and a fixing pin inserted through the pin insertion hole of the closing part. It consists of.

The present invention configured as described above is capable of measuring the weight of the drum in which the radioactive waste generated from the nuclear power plant is stored, and the radiation dose rate of the upper, middle, and lower parts can be measured by dividing the drum into quarters, and the weight of the measured drum It is easy to check the amount of radiation dose rate, and it is also possible to move the waste drum once one weight and dose rate measurement is completed, and then to re-measure to obtain accurate measurement value, making it easier to manage the history of the waste drum. The measurement time incurred by the practitioner directly by using the target equipment is reduced, and the effect of protecting workers from radiation exposure and radiation dose is provided.

Surface radiation dose, waste drum, lift,

Description

Radioactive Waste Management Lift {RADIOACTIVE WAST CONTROL INSPECTION FOR LIFE}

1 is a side view showing a lift structure for radioactive waste management according to the present invention.

2 is a rear view of FIG. 1.

3 is an exploded perspective view of main parts of FIG. 1;

4 is an operational state diagram of FIG.

Figure 5 is an exploded perspective view of the main portion showing a rotating device of the radioactive waste management lift according to the present invention.

6 is a cross-sectional view of the coupled state of FIG.

<Description of the symbols for the main parts of the drawings>

1: Base 3: Waste Drum

10: waste drum shangdong device 12: guide home

13,14: 1st and 2nd guide member 20: drum holder

21: rotating roller 22: moving member

24,25: first and second holder member 30: closing holding member

32: pin insertion hole 33,34: closed part

36: fixed pin 40: hydraulic cylinder

42: load 44: lift jack

50: waste drum rotation device 52: seating groove

53: fitting hole 54: bearing

55: fixed shaft 56: rotary table

57: weight scale 60: rotating member

62: mounting groove 63: motor shaft

64: motor 65,67: 1st and 2nd sprocket

66: Chain 70: Timer

72 control unit 84 measuring instrument

90 monitor 98 shield plate

A: means of moving the drum holder B: control means

C: Surface radiation rate measuring means D: Monitoring means

The present invention relates to a radioactive waste management lift, and more particularly, to a radioactive waste management lift capable of easily measuring the weight and surface radiation dose rate of a drum for history management with respect to a drum storing radioactive waste generated from a nuclear power plant. will be.

In general, radioactive waste generated from nuclear power plants is stored inside specially manufactured steel drums and stored safely inside concrete structures. In this case, the weight and surface radiation dose rate of the drum is measured and recorded for the history management of the drum in which the radioactive waste is stored.

Thus, in order to measure the weight and surface radiation dose rate of the conventional radioactive waste stored in the drum, it takes a lot of time according to the measurement by the worker directly using the target equipment, and also accompanied by radiation exposure and radiation dose A serious problem has arisen for the safety of workers.

The present invention has been made to solve such a conventional problem, the present invention is for radioactive waste management that can safely measure the weight, surface radiation dose rate of the drum within a short time for the history management for the drum in which the radioactive waste is stored The purpose is to provide a lift.

Technical problem of the present invention for achieving the above object, the first and second guide members and the guide groove is formed on the base provided with a moving means at the bottom, and moved up and down along the guide groove and the waste drum A drum drum for moving waste comprising a drum holder for holding and a drum holder for moving the drum holder in a vertical movement; A waste drum rotating device on which the waste drum is seated, the weight of which is measured, and which rotates the waste drum to measure surface radiation rate; A horizontal member fixed horizontally between the first and second guide members, a vertical member fixed vertically between a central region of the lower portion of the horizontal member and an upper portion of the base, upper, middle, and lower portions of the front surface of the vertical member, and the like; Surface radiation rate measuring means is installed at intervals consisting of a measuring instrument for measuring the surface radiation rate of the waste drum; And monitoring means installed at appropriate heights of the rear parts of the first and second guide members and configured to monitor the weight of the waste drum and the surface radiation rate of the waste drum measured from the measuring instrument. In the radioactive waste management lift configured to include, The drum holder, The rotating member is rotatably inserted into the guide groove of the first and second guide members rotatably provided on the rear; First and second holder members which are pivotally arranged on both sides of the front surface of the movable member to stably hold the waste drum and are formed in a semicircular shape; And a closing and holding member formed integrally with each other of the distal ends of the first and second holder members, the closing part having a pin insertion hole formed therein, and a fixing pin inserted through the pin insertion hole of the closing part. It is achieved by the configuration.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view illustrating a lift structure for managing radioactive waste according to the present invention, FIG. 2 is a rear view of FIG. 1, FIG. 3 is an exploded perspective view of the main part of FIG. 1, and FIG. 4 is of FIG. 3. 5 is an operation state diagram, Figure 5 is an exploded perspective view of the main portion showing a rotating device of the radioactive waste management lift according to the present invention, Figure 6 is a cross-sectional view of the combined state of FIG.

As shown in Figures 1 to 6, the radioactive waste management lift according to the present invention is a waste drum shangdong device 10, waste drum rotating device 50, surface radiation rate measuring means (C) and monitoring means ( D)

The waste drum moving device 10 is installed at the same height above the base 1 having a plurality of moving means at the bottom, and the first and second guide members 13 and 14 having the guide groove 12 formed therein. Wow; A drum holder 20 which is moved up and down along the guide grooves 12 of the first and second guide members 13 and 14 and holds the waste drum 3 in which the waste is stored; It consists of a drum holder movement means (A) for moving the drum holder 20 in the vertical movement.

The drum holder 20 has a plurality of rotating rollers 21 rotatably inserted into the guide grooves 12 of the first and second guide members 13 and 14 so as to be rotatable on the rear surface thereof. )Wow; First and second holder members 24 and 25 pivotally arranged on both sides of the front surface of the movable member 22 to stably hold the waste drum 3; The first and second holder members 24 and 25 are provided at the ends of the first and second holder members 24 and 25 to maintain the closing member 30.

The first and second holder members 24 and 25 are formed to maintain a semi-circular shape so as to be in close contact with the outer diameter of the waste drum 3 so that the circular shape is maintained when the waste drum 3 is closed. At this time, the waste drum (3) is formed in the upper outer diameter area, the locking jaw (3a) is caught by the locking jaw (3a) is caught in the first and second holder members 24, 25, the waste drum (3) is downward Departure to

The closing and holding members 30 are integrally formed at upper and lower ends of the first and second holder members 24 and 25 at opposite ends, and are closed parts 33 and 34 having pin insertion holes 32 to be matched with each other. ; It consists of a fixing pin 36 is inserted through the pin insertion hole 32 of the closing portion (33) (34).

The drum holder moving means (A) is installed on the base (1), the hydraulic cylinder 40 is operated as a hydraulic pressure; A rod 42 inserted into the hydraulic cylinder 40 so as to be extensible and stretchable and having an upper portion fixed to the rear of the movable member 22 of the drum holder 20; The hydraulic cylinder 40 and the flow path (油路) is configured to be formed of a lift jack 44 for extending the rod 42.

The waste drum rotating device 50 includes a seating groove 52 formed by maintaining an appropriate diameter on one surface of the base 1; A through-hole 53 formed through the central region of the seating groove 52 and having a bearing 54 formed therein; A fixed shaft 55 protruding downward through the bearing 54 and rotatably constructed is provided in the lower central area, and the waste drum 3 is placed on the upper part so as to protrude upward in the seating groove 52. A rotating table 56; The fixed shaft 55 is provided at a lower outer diameter and a lower portion of the base 1 at a proper position, and includes a rotating member 60 for selectively rotating the rotary table 56.

The rotary table 56 is equipped with a weigh scale 57 for accurately measuring the weight of the waste drum 3.

The rotating member (60) is installed in the installation groove (62) installed at an appropriate position under the base (1), and a motor (64) provided with a motor shaft (63) rotatably at the front end thereof; A first sprocket (65) rotatably arranged on the motor shaft (63); The second sprocket 67 is connected to the first sprocket 65 by a chain 66 and is rotatably arranged under the fixed shaft 55.

The first and second sprockets 65 and 67 are installed such that the rotation ratio is 4: 1. That is, when the motor 64 rotates once, the rotation table 56 rotates 1/4. When 64 is rotated four times, the rotary table 56 rotates once.

At this time, the control of controlling the rotational force of the motor 64 so that the motor 65 stops operation for an appropriate time (about 2 seconds) every time the motor 64 is rotated, that is, every 1/4 rotation of the rotary table 56. Means B are provided.

The control means (B) includes a timer (70) provided at an appropriate position of the motor (64) to count the number of revolutions of the motor (64); The control unit 72 stops the rotation of the motor 64 for a proper time (about 2 seconds) for each revolution counted by the timer 70, and rotates again.

The surface radiation rate measuring means (C) comprises a horizontal member (80) fixed horizontally between the first and second guide members (13, 14); A vertical member 82 vertically fixed between the central region of the lower portion of the horizontal member 80 and the upper portion of the base 1; The upper and middle portions of the front surface of the vertical member 82 are installed at equal intervals, and the measuring unit 84 measures the surface radiation rate of the waste drum 3.

At this time, the measuring instrument 84 is installed on the vertical member 82 appropriately to the height of the waste drum (3) to measure the surface radiation rates of the upper, middle, and lower portions of the waste drum (3).

The monitoring means (D) is installed at an appropriate height of the rear of the first and second guide members (13) and (14), and the weight of the waste drum (3) measured from the weigh scale (57) mounted on the rotary table (56). And a monitor 90 for monitoring the surface radiation rate of the waste drum 3 measured from the measuring instrument 84.

At this time, the monitor 90 is connected by wire from the weighing meter 57 and the measuring instrument 84 so that the operator can see the weight and surface radiation rate of the waste drum 3 at a glance.

Between the rear parts of the first and second guide members 13 and 14 maintains a proper thickness and height, a shielding plate 98 of lead material is installed to protect the worker.

Referring to the operating state of the present invention configured as described above, in order to measure the weight and surface radiation rate for the drum (3) in which the radioactive waste is stored as shown in Figure 1 to 6, first, the waste as a moving means such as a crane The drum 3 is moved to be stably placed on the rotary table 56 constituting the waste drum rotating device 50.

Then, the weight of the present waste drum 3 measured by the weight scale 57 mounted on the rotary table 56 is installed at an appropriate height of the rear of the first and second guide members 13 and 14. It is displayed on the monitor 90 of the means D.

At the same time, between the horizontal member 80 between the first and second guide members 13 and 14 constituting the surface radiation rate measuring means C, and vertically between the horizontal member 80 and the upper part of the base 1. Upper and middle waste drums 3 on the rotary table 56 are measured by measuring a plurality of measuring instruments 84 installed at equal intervals on the front, middle, and bottom of the front of the vertical member 82 to be fixed. The lower surface radiation rate is measured and displayed on the monitor 90.

In this state, the waste drum rotating device 50 is operated. That is, the motor 64 of the rotating member 60 constituting the waste drum rotating device 50 is rotated.

Accordingly, as the motor shaft 63 is rotated and the first sprocket 65 installed on the motor shaft 63 is rotated, the rotational force of the motor 64 is transferred to the second sprocket 67 through the chain 66. By being transmitted, the fixed shaft 55 built into the bearing 54 inserted into the fitting hole 53 of the base 1 is rotated by the rotational force of the bearing 54 to be seated in the seating groove 52 of the base 1. The rotary table 56 is rotated.

At this time, the rotation ratio of the first and second sprockets 65 and 67 is maintained so that 4: 1 is maintained. When the motor 64 is rotated once, the rotation table 56 is rotated in 1/4 and the motor 64 is rotated. When 4 turns, the turntable 56 rotates once.

At the same time, each rotation of the motor 64, i.e., every time the rotary table 56 is rotated quarterly, the rotational force is controlled by the control means B such that the motor 65 is stopped again for an appropriate time (about 2 seconds). To control.

That is, when the motor 64 rotates once, the rotation speed is counted by the timer 70, and the control unit 72 recognizes the rotation speed counted by the timer 70, and the rotation of the motor 64 is performed every rotation. The rotation will stop for about 2 seconds.

At this time, when the rotary table 56 is stopped by 1/4 rotation, the waste drum 3 whose surface radiation rate is measured as described above is rotated quarterly, and thus, on the waste drum 3 of the rotated portion. The surface radiation rate with respect to the middle part and the lower part is measured by the measuring instrument 84.

As described above, the measurement of the waste drum 3 is completed and the motor 64 in the stopped state is rotated again by the control of the controller 72. When the measurement is completed, the rotation of the motor 64 is stopped. In this order, the cylindrical waste drum 3 is divided into quarters, and the surface radiation rate is sequentially measured.

On the other hand, when the measurement of the waste drum (3) is completed by operating the waste drum shangdong device 10 to move the position for the waste drum (3) (see Figs. 2 and 3).

In more detail, the flow path to the hydraulic cylinder 40 of the drum fixing platform moving means A constituting the waste drum shangdong device 10 is blocked.

Then, the rod 42 is stretched and stretched in the hydraulic cylinder 40 and the upper part is fixed to the rear of the movable member 22 of the drum holder 20 to expand and contract along the hydraulic cylinder 40. The moving member 22 of the fixing table 20 is gradually moved downward.

That is, as the rotary roller 21 is moved downward along the guide groove 12 of the first and second guide members 13 and 14, the moving member 22 is moved downward to the waste drum 3 position. Is moved.

In this state, the closing retaining member 30 at the tip of the first and second holder members 24 and 25 rotatably arranged on both sides of the front surface of the movable member 22 constituting the drum holder 20 is separated.

That is, the fixing pins 36 in the state inserted through the pin insertion holes 32 of the closing parts 33 and 34 formed integrally with each other at the upper and lower ends of the first and second holder members 24 and 25. After leaving the upper portion, the first and second holder members 24 and 25 are rotated outward. Then, the first and second holder members 24 and 25 having a semicircular shape are rotated to the outside at a proper angle to be opened.

Then, the waste drum 3 is pushed into the first and second holder members 24 and 25. Then, the cylindrical waste drum 3 is caught on the inner end of the first and second holder members 24 and 25 that are rotated in the outwardly open state so that the first and second holder members 24 and 25 are driven by this force. Is rotated inward to surround the outer diameter of the waste drum (3).

At the same time, the pin insertion holes 32 of the closing portions 33 and 34 formed integrally with each other at the upper and lower ends of the first and second holder members 24 and 25 are coincident with each other. By inserting the fixing pin 36 through the waste drum (3) is to hold stably.

At this time, the latching jaw 3a formed in the upper outer diameter area of the waste drum 3 is caught by the first and second holder members 24 and 25, thereby preventing the waste drum 3 from falling down. 4 Reference)

In this state, after connecting the flow path to the hydraulic cylinder 40 of the drum fixing means A, the lift jack 44 configured to form the flow path with the hydraulic cylinder 40 is operated. As a result, the rod 42 extends upward along the hydraulic cylinder 40.

Accordingly, the moving member 22 of the drum holder 20 in which the waste drum 3 is stably held is gradually moved upward while being separated from the rotary table 56.

As such, the waste drum 3 is spaced apart from the rotary table 56 at an appropriate distance, and then lowered again as described above and lowered on the rotary table 56. Then, the waste drum is again subjected to the same process as described above. The weight of (3) and the surface radiation rates for the upper, middle, and lower parts of the waste drum (3) are sequentially measured.

That is, the waste drum 3 is removed from the rotary table 56 by the waste drum moving device 10, and then the weight of the waste drum 3 and the surface radiation rate for the waste drum 3 are measured again. The history of the waste drum (3) is compared with the measured result.

In this way, the waste drum 3 finally completed is moved to another place by another means of transportation and stored safely.

On the other hand, after the first and second guide members 13 and 14 maintain the appropriate thickness and height, a shielding plate 98 of lead material is installed to protect the worker from radiation.

According to the radioactive waste management lift of the present invention described above, it is possible to measure the weight of the drum in which the radioactive waste generated in the nuclear power plant is stored, and the radiation dose rate for the upper, middle and lower parts by dividing the drum by 1/4 It is possible to easily check the weight and radiation dose rate of the measured drum, and move the waste drum once the weight and radiation dose rate measurement is completed, and then re-measure the measured value so that the history management of the waste drum is accurate. It is also easy, and the measurement time generated by the conventional operator directly using the target equipment is reduced, and there is an effect to safely protect the workers from radiation exposure and radiation dose.

While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to the embodiments described above, and is typically defined in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with knowledge of the world can make many variations.

Claims (6)

First and second guide members installed in the upper portion of the base provided with a moving means in the lower portion and the guide groove, the drum holder to move up and down along the guide groove and to hold the waste drum, and to move the drum holder up and down Waste drum shangdong device made of a drum fixing means for moving; A waste drum rotating device on which the waste drum is seated, the weight of which is measured, and which rotates the waste drum to measure surface radiation rate; A horizontal member fixed horizontally between the first and second guide members, a vertical member fixed vertically between a central region of the lower portion of the horizontal member and an upper portion of the base, upper, middle, and lower portions of the front surface of the vertical member, and the like; Surface radiation rate measuring means is installed at intervals consisting of a measuring instrument for measuring the surface radiation rate of the waste drum; And monitoring means installed at appropriate heights of the rear parts of the first and second guide members and configured to monitor the weight of the waste drum and the surface radiation rate of the waste drum measured from the measuring instrument. In the radioactive waste management lift configured to include, The drum holder may include a moving member rotatably provided at a rear surface of the rotating roller which is inserted into the guide groove of the first and second guide members; First and second holder members which are pivotally arranged on both sides of the front surface of the movable member to stably hold the waste drum and are formed in a semicircular shape; And A closing and holding member formed integrally with each other of the distal ends of the first and second holder members, the closing portion having a pin insertion hole formed therein and a fixing pin inserted through the pin insertion hole of the closing portion; Radioactive waste management lift, characterized in that consisting of. delete delete According to claim 1, The waste drum rotating device, A through-hole formed in the center of the seating groove formed on one surface of the base and having a bearing formed in the inner diameter thereof; A rotary table rotatably arranged in the bearing, a fixed shaft having an end protruding downward, and a seating table mounted on the seating groove, on which the waste drum is mounted, and a weighing scale mounted thereon; And A rotating member provided at the fixed shaft lower outer diameter and the base lower proper position to rotate the rotary table; Radioactive waste management lift, characterized in that consisting of. delete 2. The radioactive waste management lift according to claim 1, wherein a lead plate shielding plate is installed between the rear parts of the first and second guide members to maintain an appropriate thickness and height.

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