High-level radioactive industrial cobalt source anti-leakage packaging structure and packaging technology

Abstract

The invention relates to a high-level radioactive industrial cobalt source anti-leakage packaging structure and a packaging technology. The packaging structure comprises a sealing body and a metal sealing structure, wherein the sealing body is used for sealing cobalt particles in a sealed manner and is made of a low-melting-point material; the metal sealing structure is arranged outside the sealing body in a sealed manner. The sealing body made of the low-melting-point material is increased outside the cobalt particles, so that the cobalt source is conveniently recycled, and the problem that the cobalt source is heated by a high temperature to produce radioactive aerosol so as to pollute the hot chamber and the environment due to cutting manners such as laser, flames or other ions in the process of recycling the cobalt source can be solved.

Description

technical field [0001] The invention relates to the fields of radioactive sealed sources, radioisotopes and nuclear technology applications, and more specifically relates to a leak-proof packaging structure and packaging process for strong radioactive industrial cobalt sources. Background technique [0002] The high-activity cobalt-60 sealed radioactive source standard GB7465-2015 stipulates the external dimension requirements and safety performance requirements of the cobalt source. The existing cobalt source is sealed by double-layer stainless steel fusion welding. The standard requires that under the specified use environment and conditions, the safe use period of cobalt radioactive sources is 15 to 20 years. Cobalt 60γ sources for industrial irradiation are stored in water wells or dry wells (rooms), and radioactive sources must be returned to water wells or dry wells (rooms) for storage during non-working periods. [0003] Affected by the water quality in the well, th...

AI Technical Summary

Problems solved by technology

The leakage of the cobalt source may cause environmental pollution, and its use must be terminated, and the cost of accident handling is high

[0004] The welding process of stainless steel is relatively complicated. Due to high welding temperature and thermal stress, the surface coating of cobalt particles will easily fall off, and radioactive aerosols containing cobalt will be produced, which will pollute the environment or cause internal exposure accidents.

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