High-activity spent radioactive source conditioning method and special device thereof

Abstract

The invention belongs to the technology of processing radioactive wastes, and in particular relates to a high-activity spent radioactive source conditioning method and a special device thereof. The method comprises the following steps of: dismantling the original container in a dismountable moving device; taking a high-activity spent radioactive source out of the original hanging basket and encapsulating; putting the encapsulated tube into an encapsulatable container; putting the container into a long-term storage container which can be stored for a long time directly; or taking the container out of the long-term storage container and storing the container in a deep well. The device comprises a device main body, wherein a shielding body is arranged on the device main body and is provided with a mechanical hand and a liquid observation window; a control part of the mechanical hand is arranged outside the device main body; and a lifting device and a welding device are arranged in the device main body. The high-activity spent radioactive source which is conditioned through the method has the characteristics that the source has high volume reduction rate, is retrievable and can be stored in a pit or the deep well. The conditioning device has a modular and dismountable structure and is convenient to move and operate.

Description

technical field [0001] The invention belongs to radioactive waste treatment technology, and in particular relates to a preparation method for high-activity waste radioactive sources and a special device thereof. Background technique [0002] The application of radioactive sources produces highly active spent radioactive sources. High-activity disused radioactive sources need to be managed safely because of their high activity, high dose rate, and high hazard. [0003] In addition to returning to production units and exporters, domestic high-activity waste radioactive sources are stored in the national centralized storage of waste radioactive sources, or temporarily stored at user sites. However, some high-activity waste radioactive sources temporarily stored at the user site cannot be transported due to lack of suitable transport containers, posing a major safety hazard, and should be prepared as soon as possible for safe storage. [0004] At present, China has promulgated...

AI Technical Summary

Problems solved by technology

[0006] (1) The cost of the fixed heat chamber is high; for every high-activity waste radioactive source that cannot be transported, it is unrealistic to rebuild a fixed high-activity waste radioactive source preparation device

[0007] (2) The demolition, reconstruction and reuse of the old fixed heat chamber requires high technology, long time and qualified technicians

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