Radioactive storage tank sediment sampler and using method thereof

Abstract

The invention belongs to the technical field of sampling operation of radioactive sites, and in particular relates to a radioactive storage tank sediment sampler and a using method of the radioactivestorage tank sediment sampler. The sampler comprises a sampling bowl, a scissor frame, a cylinder and a connecting piece; the sampling bowl is formed by closing two half-bowl structures, the front endof the scissor frame is fixedly connected with the sampling bowl, and the rear end of the scissor frame is connected with the cylinder through the connecting piece. The sampler adopts a long-distancemanually controlled cylinder to automatically clamp sediments in a radioactive waste liquid storage tank, and has the advantages of wide application range, flexible and convenient use and the like, and can realize sampling in a deformed container by penetrating through an arc-shaped channel or irregular channel through connecting a rigid sampling rod or a flexible sampling rod. The sampler can beused not only for sampling the sediments in low-level waste liquid storage tanks, but also can be suitable for sampling the sediments in medium and high-level waste liquid storage tanks and waste liquid, and realizing sampling operations in the field of chemical industry or other toxic and hazardous industries.

Description

technical field [0001] The invention belongs to the technical field of sampling operations in radioactive places, and in particular relates to a sediment sampler for radioactive storage tanks and a method for using the same. Background technique [0002] During the decommissioning process of nuclear facility storage tanks, due to the long-term storage of radioactive waste liquid in the radioactive waste liquid storage tank, sediments of different thicknesses are deposited at the bottom of the radioactive waste liquid storage tank. source item information, etc., must be analyzed through sampling. Due to the early construction of the facility, no special sampling system for radioactive sediments was designed. The high, medium and low level waste liquids in the storage tanks are all equipped with special sampling systems. Cannot be used for sediment sampling work. Due to the low level of radioactivity in the low-level waste liquid storage tank, the degree of damage to personn...

AI Technical Summary

Problems solved by technology

This method is difficult to carry out storage tank sediment sampling, the dose received by personnel is increased, the representativeness of the collected sediment samples is not good, the state of sediment accumulation affects the sampling volume, and it cannot be applied to sediment sampling in medium and high-level radioactive waste liquid storage tanks And other issues

And in the previous work, it was found that the instrument bushing entering the tank had been bent to a certain extent due to the impact of the earthquake and the tank drift event, so that the rigid straight pipe sampler could not enter the radioactive waste liquid storage tank to complete the sampling work

After investigation, it is not found that the prior art has a directly applicable sampling device through the arc channel

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