JPS5833600Y2 - Radioactive solid waste pneumatic transportation equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to pneumatic transportation equipment for radioactive solid waste.

Currently, with the expansion of nuclear administration, volume reduction treatment of radioactive waste is being promoted at nuclear fuel research and development facilities, nuclear power plants, and facilities that use radioisotopes (RI), and the transportation of radioactive solid waste is being promoted. Opportunities are increasing.

Radioactive solid waste is generally transported in sealed containers such as drums and pails to prevent leakage into the environment.

However, this transportation method requires repeated extraction and filling of radioactive solid waste in each container, consuming a great deal of labor and increasing the risk of radiation exposure for workers.

For example, when radioactive solid waste is transported using loading equipment such as conventional conveyors, it is difficult to completely seal the loading equipment, and it is necessary to isolate the entire loading equipment in a glove box, airtight room, etc. be.

Isolating the entire facility in this way has many difficulties in terms of effective use of the site and space of the treatment facility, and maintenance and management of loading equipment.

Therefore, the present invention provides a pneumatic transport facility for radioactive solid waste that solves these problems.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 is a radioactive solid waste supply port; 2 is a receiving container that communicates with the supply port 1 via a duct 3 connected to the upper end opening;
4 is a radioactive solid waste discharge port; 5 is an air and solid separator whose lower end opening communicates with the discharge port 4; 6 is a transport pipe that communicates the separator 5 with the receiving container 2; and 7 is a transport pipe that communicates with the receiving container 2; A pipe 8 connected to the discharge port of the compressor 7 is divided into two parts, and one branch pipe 8 is a compressor.
a is connected to the lower part of the receiving container 2, and the other branch pipe 8b is connected to a portion of the side wall of the receiving container 2 opposite to the transport pipe 6.

Therefore, the compressed air that entered the receiving container 2 through one branch pipe 8a will be used to remove the radioactive solid waste 9 in this container 2.
The compressed air that enters the receiving container 2 through the other branch pipe 8b sends the fluidized radioactive solid waste 9 into the transport pipe 6.

10 is a sealed tube that is fitted concentrically to the transport tube 6;
Reference numeral 11 denotes a radioactive material leakage detector that receives air in the sealed tube 10 via a pipe 12 and detects the presence or absence of radioactive material leakage.

13, 14, and 15 are filters connected to the discharge port of the detector 11, the central cylinder 5a of the separator 5, and the suction port of the compressor 7, respectively, and 16 is a double gate provided in the duct 3. .

The operation of the above configuration will be explained.

First, the double gate 16 is opened and the radioactive solid waste 9 is put into the receiving container 2 from the supply port 1. Then, when the compressor 7 is activated, the clean air that has passed through the filter 15 is passed through the branch pipes 8a and 8b. is supplied into the receiving container 2,
The radioactive solid waste 9 in this container 2 is fluidized, and the fluidized radioactive solid waste 9 enters the transport pipe 6 and is sent into the separator 5.

Inside the separator 5, the radioactive solid waste 9 descends due to its own weight and is discharged into the discharge port 4.

Furthermore, the air from which the radioactive solid waste 9 has been separated passes through the filter 14 from the central cylinder 5a and is released into the atmosphere as clean air.

Also, during this work, the detector 11 is operated, so that in the unlikely event that a pinhole or crack occurs in the transport pipe 6 and radioactive material leaks, the detector 11 will detect the leaked radioactive material. A warning should be issued.

Note that the air brought to the detector 11 passes through a filter 13 and is dissipated into the atmosphere.

As described above, according to the radioactive solid waste pneumatic transportation equipment of the present invention, radioactive solid waste is fluidized and transported from the supply port to the discharge port, so when it is packed in a conventional container and transported. Compared to conventional methods, not only is the work of filling and extracting radioactive solid waste unnecessary, but also a large amount of waste can be transported continuously in a short period of time.

In addition, it can be transported in a completely sealed state, and even if the transport pipe cracks due to wear or corrosion, it can be detected immediately by a detector, so there is no risk of radiation exposure to workers. Extremely safe.

Furthermore, since only a compressor is used to transport waste and there is no other drive mechanism, it has the great advantage of being able to be used with almost no maintenance.

[Brief explanation of drawings]

The figure is a schematic sectional view showing an example of the present invention. 1...Radioactive solid waste supply port, 2...
・Receiving container, 4...Radioactive solid waste outlet,
5...Separator, 6...Transport pipe, 7...
...Compressor, 8,12...Pipe,
9... Radioactive solid waste, 10... Sealed tube, 11... Radioactive material leak detection meter.

Claims (1)

[Scope of utility model registration request] a receiving container communicating with the radioactive solid waste supply port, an air-solid separator communicating with the radioactive solid waste discharge port, a transport pipe communicating the separator with the receiving container with each other; A compressor is provided for supplying compressed air into the receiving container to fluidize the radioactive solid waste in the container and to send the fluidized radioactive solid waste into the separator through the transport pipe, and the transport pipe 1. A pneumatic transport facility for radioactive solid waste, characterized in that a sealed pipe is fitted onto the outside of the pipe, and a radioactive material leakage detector is installed to detect the presence or absence of radioactive material leakage by receiving and taking air inside the sealed pipe.