SU133984A1 - Container for storing gamma radiation sources - Google Patents

Description

The subject of the invention is a multi-container for group transportation and storage of powerful sources of gamma radiation, allowing transportation of 10-30 sources with a diameter of 11 mm and a height of 83 mm, or several tens of smaller ones.

A multi-container for storing radioactive substances is known, made in the form of a vertical cylindrical lead drum mounted in a steel case and equipped with seven longitudinal steel canisters for sources.

The proposed container is characterized by the use of a locking system for loading and unloading openings by introducing an additional locking drum, allowing use of the space occupied in the central drum by the check, and increasing the number of nests for sources, as well as locking the checks, structurally associated with the locking drum, which increases the useful container capacity. In the container, it is possible to load and unload any nest of the central drum independently of the other nests, and the elimination of the slot for checks in the central drum eliminates filling the checks with the source, and thus prevents the possibility of an accident.

Pa figs. 1 shows a container, vertical section; in fig. 2 - container disk with the cover removed, top view; in fig. 3 - locking axis of the locking drum; in fig. 4 is a transverse section of the container through a locking device and nests for sources.

The container consists of a cast-iron case / filled with lead 2 and having a discharge tube 3 at the bottom, checks 4 in the form of a vertical rod, a stopper 5, a central drum 6 and a stop drum 7№ 133984-2. The case has two bolts 8 for picking up the container during transportation and rests on legs. The inner part of the body is limited by the cylinder 9 and the bottom flange 10. The cylinder and the flange are fastened with a pin 11. In the lower part of the body, under the screw thread tube 3, there is a fixing head 12 for water flow.

The stopper 5 consists of an upper flange 13, a disk 14, a cup 15 and tubes 16 through which the axes of the drums and the check pass. The parts of the cork are made of stainless steel, and the cork itself is filled with lead. The disk 14 has locking cells, operation indicators and slot numbers of the central drum 6. The cork is bolted to the casing 17. The disk 14 is attached to the flange 13 with screws 18. A calibration sleeve 19 is pressed into the upper part of the opening for checks 4. The cork is closed by a lid 20 having rails to seal the container.

The central drum 6 has a steel cylinder 21 with eleven through-holes 22, an axis 23 and a handle 24. The ten holes of the cylinder serve as sockets for placing radiation sources in them, and the eleventh for passing checks. The handle of the central drum is similar to the handle of the locking drum, has a locking ball 25 with a spring 26 in the sleeve 27 and is attached to the axis of the drum with a pin 28.

The locking drum 7 is a disc with a hole 29 for passing the end of the checks 4 or sources when the container is unloaded and has an axis 30 with a handle 24 and a lock 31. The clamp consists of a ring 32, a spring 33 and a slider 34 with a rectangular ring 35.

The check 4 has the form of a rod, terminating in a tube 36, filled with lead. On the rod there is a step 37 for fixing the checks in the upper position and a head 38 with a ring 39.

To load the container, the lid 20 is removed, the check 4 is lifted up to the stop, and the locking drum handle 24 is placed in the loading position, after which the check 4 is taken out. The handle of the central drum rotates to the extreme position corresponding to the slot /, which is placed under the loading opening container. The discharge opening remains blocked by a stop drum. The container is then lowered to the bottom of the basin in which the sources are stored.

The radiation sources, when lowering the calibration sleeve 19 to the charging opening, pass the calibration sleeve 19 and fill the first slot of the central drum. After filling it, the drum is rotated by the handle to the next position and the second slot is filled, etc. After loading the last slot of the check, it is inserted all the way, the stop drum is turned to the unloading position and the check is pushed into the container to the end. The container is then removed from the pool, closed with a lid and sealed.

For unloading, the container is positioned by the locking head 12 above the corresponding source location, the cover 20 is removed and the check 4 is lifted to the upper position until it stops in which it is held by the slider 34 of the clamp 31. The handle turns the central drum to unload and the nests are emptied through the unloading tube 5. Upon completion of unloading, the check is moved inside the container and the container is removed

If it is necessary to unload only one or several defined slots of the central drum of the check 4, it rises up to the stop, the locking drum turns to the loading position at which

the discharge opening is blocked, the handle of the central drum is set to the position corresponding to the number of the unloaded nest, the stop drum is turned in the opposite direction, and the nest is released from sources.

Subject invention

A container for storing gamma radiation sources, consisting of a body filled with lead and equipped with a discharge tube, a central drum with vertical sockets for sources, a lid and checks, characterized in that, in order to increase the useful capacity of the container and ease of loading and unloading it, an additional drum is mounted in it, which blocks and opens the discharge opening by turning the handle and is equipped with a blocking device made in the form of a slide with a spring-loaded rectangular ring holding the check in the up position for use of its place by the central drum.

- 3 - № 133984

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