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A recovery method for low-level radioactive waste in a waste pit

A waste pit and waste technology, applied in radioactive purification, nuclear engineering, etc., can solve the problems of being unable to freely grasp waste pits and low efficiency of waste retrieval, and achieve the effects of preventing collisions, prolonging the use cycle, and ensuring safety

Active Publication Date: 2017-12-12
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low waste recovery efficiency in the existing low-level waste recovery method in the waste pit
The purpose of the present invention is to provide a method for retrieving low-level waste in waste pits. According to the radiation level and volume of low-level waste in waste pits, the combined operation of power manipulator and electric grabbing is used to retrieve the waste, which solves the problem of waste in conventional retrieval methods. Technical problems such as low retrieval efficiency and inability to freely grab according to the characteristics of the waste pit

Method used

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  • A recovery method for low-level radioactive waste in a waste pit
  • A recovery method for low-level radioactive waste in a waste pit
  • A recovery method for low-level radioactive waste in a waste pit

Examples

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Effect test

Embodiment 1

[0050] The invention discloses a method for replaying low-level waste in pits. The power manipulator is used to grab the waste in the mouth of the waste pit to the orthographic projection area below the mouth of the waste pit, and then use the electric gripper to grab the waste in the orthographic projection area below the mouth of the waste pit. Waste is grabbed outside the waste pit and packed into waste bins or transfer containers.

[0051] This method is applicable to the retrieval of all types of low-level waste from pits.

Embodiment 2

[0053] The invention discloses a method for replaying low-level radioactive waste in pits, aiming at figure 1 The shown waste pit, its retrieving method comprises the following operating steps, as figure 2 as shown,

[0054] Step 1): Open the pit mouth cover of the waste pit, the powered manipulator holds the γ camera, scans the waste in the waste pit, obtains the radiation hotspots of the waste in the waste pit, and determines the grabbing step according to the number and area of ​​the radiation hotspots;

[0055] Step 2): Use a power manipulator to grab the waste with a radiation level greater than 10mSv / h out of the pit and put it directly into the dump container beside the pit. After it is full, use a crane to transfer the dump container to the gamma detector. After the waste is scanned and measured, it is transferred to the sorting platform, where the crane can be a 3t crane for lifting the dumped container, and the crane can also be replaced by a powered manipulator cr...

Embodiment 3

[0072] On the basis of the above examples, if image 3 As shown, the electric grab is defined as an electro-hydraulic four-lobe grab. The electro-hydraulic four-lobe grab includes a grab body 3, and a guide cap 1 is provided around the opening end of the grab body 3. The guide cap 1 It is formed by connecting two circular steel bars with multiple arc steel bars around the opening end of the grab body 3, the diameter of the circular steel bar at the upper end of the two circular steel bars is smaller than that of the circular steel bar at the lower end. The diameter of the bar.

[0073] Preferably, a guide angle is provided at the connecting end of the circular steel bar at the upper end and the arc-shaped steel bar, and the angle range of the guide angle is 110-160°.

[0074] Preferably, the main body of the grab fuselage 3 is provided with a protective device 2 around, and the protective device 2 is formed by interweaving a plurality of longitudinally arranged circular steel...

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Abstract

The invention discloses a method for retrieving low-level radioactive waste in waste pits. Power manipulators are used to grab the waste in the mouth of the waste pit to the orthographic projection area below the mouth of the waste pit, and then use electric grabbers to grab the waste under the mouth of the waste pit. Waste in the orthographic area is grabbed outside the waste pit and packed into waste bins or transfer containers. The method for retrieving low-level waste in the waste pit of this technical scheme combines the power manipulator and the electric gripper according to a certain operation sequence during the operation process, which solves the technical problem of retrieving low-level waste in the pit. The decommissioning of the waste warehouse provides reference and reference value; compared with the existing technology, the use of robot grasping improves the retrieval efficiency of low-level radioactive waste; reduces the exposure dose of operators and ensures the safety of operators.

Description

technical field [0001] The invention relates to the technical field of decommissioning of military nuclear facilities and civil nuclear facilities and the treatment of radioactive waste, in particular to a method for retrieving low-level radioactive waste in waste pits. Background technique [0002] During the development of the nuclear industry for more than 60 years, a large amount of radioactive solid waste has been produced and accumulated. Since the concept of early waste classification management has not been established, most of these wastes are piled up in various types such as warehouses, wells, and pits. Waiting in the waste warehouse. These waste repositories do not meet the current radioactive waste management requirements, and as the facilities age, this extensive waste temporary storage method can easily cause the migration and loss of radionuclides, posing a potential threat to the environmental safety of the area where they are located. Once the waste has cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F9/28G21F9/30G21F9/34
CPCG21F9/28G21F9/30G21F9/34
Inventor 徐江李振臣童刚李文钰张劲松黄文涛李兴义章航洲陈莉张家衡张永康谢刚贵张井田林煜崙戴钧
Owner NUCLEAR POWER INSTITUTE OF CHINA
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