Method and facility for placing decommissioned large equipment in disposal unit

Abstract

The invention provides a method and facility for placing decommissioned large equipment in a disposal unit, and the method comprises the following steps: installing a lifting platform in the disposal unit, lifting the lifting platform until the top of the lifting platform extends out of the disposal unit, hoisting the decommissioned large equipment by adopting a heavy crane, and placing the decommissioned large equipment in the disposal unit under the state that the heavy crane still hoists the decommissioned large equipment. The decommissioned large equipment is lowered to the bottom face of the decommissioned large equipment to abut against the top face of the lifting platform, then the lifting platform is lowered, meanwhile, the heavy crane synchronously lowers the decommissioned large equipment, and after the lifting platform abuts against the ground of the disposal unit, hoisting of the decommissioned large equipment by the heavy crane is relieved; the large equipment can be accurately and stably placed at the originally designed position in the repository, it is guaranteed that the large equipment is always in a horizontal and stable state in the process of being placed into the disposal unit, the process is safe, reliable and economical, the work amount for installing the large hoisting equipment is greatly reduced, and the work efficiency is improved. And the space waste of the disposal unit is avoided.

Description

technical field [0001] In particular the invention relates to a method and facility for placing large decommissioned equipment in a disposal unit. Background technique [0002] Calculated according to the design life of nuclear power units in operation at this stage, there will be a peak of nuclear power decommissioning in the next 20 to 30 years. In order to cope with the upcoming peak of decommissioning of nuclear power plants, relevant work on the disposal of large nuclear power decommissioning equipment should be carried out as soon as possible. [0003] The focus of decommissioning large-scale equipment is whether to cut the large-scale equipment. If the treatment plan of cutting is selected, the subsequent disposal work is relatively simple. The cut parts of large-scale equipment can be processed and prepared with standard waste bags, and there are no difficulties in subsequent transportation and disposal. If you choose to keep the complete treatment plan of large equ...

AI Technical Summary

Problems solved by technology

But at present, regardless of the form or size of the low-level repository unit, its lifting device is designed for standard waste packaging, and can only lift standard waste packages, and cannot lift large equipment in the disposal unit

To dispose of large equipment in the disposal unit, a heavy-duty gantry or two large hydraulic cranes or a large tower crane with fixed points are required. Equipping these equipments is not only a huge amount of work and costly, but also places a heavy burden on the foundation The force requirement is high, and it may not be realized due to the limitation of the disposal unit structure

If large-scale equipment is to be disposed of separately, the disposal unit needs to be constructed separately, and the design and construction work volume is larger and the cost is higher

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