Spent fuel storage tank storage and recovery method

Abstract

The invention discloses a spent fuel storage tank storage and retrieval method which comprises the following steps: S1, setting a reference positioning identifier which comprises a horizontal concretemodule identifier, a transfer bracket identifier, a hydraulic cylinder identifier and a ground center line identifier; S2, initially positioning and centering a transfer bracket; S3, centering the initial horizontal plane of a transfer container; S4, centering the initial vertical surface of the transfer container; S5, accurately centering the transfer container on the horizontal plane for the first time; S6, accurately centering the vertical surface of the transfer container for the first time; S7, pushing the transfer container into a door opening of a horizontal concrete module to make contact with the step surface; S8, accurately centering the final horizontal plane of the transfer container; S9, accurately centering the final vertical surface of the transfer container; S10, centeringthe horizontal plane of a hydraulic cylinder of the transfer bracket; S11, centering and rechecking the vertical surface of the hydraulic cylinder of the transfer bracket; S12, pushing a spent fuel storage tank into the horizontal concrete module; and S13, compensating the bending amount, and recycling the hydraulic cylinder.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a method for storing and retrieving spent fuel storage tanks. Background technique [0002] At present, the horizontal device storage system consists of spent fuel storage tanks, transfer containers and horizontal devices. Taking the authorized invention patent horizontal device for dry storage of spent fuel (authorized announcement number CN1083357767B) and nuclear power plant spent fuel storage tank (authorized announcement number CN109599198B) as examples, in order to facilitate transfer and storage, it is usually necessary to set up support on the transfer trailer Brackets for horizontal support of the upper and lower trunnions of the transfer container. A hydraulic corbel is set under the support bracket, a hydraulic cylinder is set on the support bracket, and a grab head is set on the top of the hydraulic cylinder. Push into horizontal...

AI Technical Summary

Problems solved by technology

[0003] Since the thickness of the spent fuel storage tank is usually only 12 to 14 mm, the structural strength is low, and the weight of the entire storage tank is close to 50 tons when fully loaded

When pushing the spent fuel storage tank into the module, due to the deviation of the horizontal and vertical planes, the structure of the storage tank will be jammed and collided. Security Risk

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