Heavy water reactor spent fuel basket testing inspection device

Abstract

The invention belongs to the technical field of nuclear power station spent fuel dry storage, and particularly relates to a heavy water reactor spent fuel basket testing inspection device. The invention aims to develop a spent fuel basket testing inspection device, that is, a manufactured spent fuel basket is transferred to the testing inspection device, a dial indicator is erected after the inspection device is in place, the circularity, the coaxiality and the flatness of the fuel basket can be tested by rotating the fuel basket, and a cover of the fuel basket is opened to check whether the internal structure is completed or not. The characteristics lie in that the heavy water reactor spent fuel basket testing inspection device comprises a supporting and hanging bracket, a hand-cranking winding device, a supporting and hanging bracket supporting and locking device, a basket cover gripping apparatus, a rotating inspection platform, a base and a measuring and inspecting dial indicator device. The spent fuel basket testing inspection device disclosed by the invention is accurate in measured data, safe, reliable, convenient to operate and improved in work efficiency, can ensure subsequent relevant operations to be conducted normally before the fuel basket is loaded with spent fuel rod bundles, and ensures the integrity of fuel rod bundles and welding of upper and lower welding seams of the fuel basket to meet requirements of a welding technology.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant spent fuel dry storage, and in particular relates to a test and inspection device for heavy water reactor spent fuel baskets. Background technique [0002] There are two heavy water reactor nuclear power units in the third plant of China National Nuclear Corporation. Its main advantage is non-stop refueling. A corresponding amount of spent fuel is discharged from the reactor every day and stored in the fuel pool. Due to the limited capacity of the fuel pool to store spent fuel , can only be stored for 6.5 years. If the spent fuel in the fuel tank is not transferred out, the fuel tank of the reactor cannot be unloaded, and the reactivity in the reactor will decrease, resulting in power reduction of the unit or forced shutdown of the reactor. In order for the heavy water reactor unit to operate stably, the heavy water reactor nuclear power plant needs to load the pool spent fuel bundles ...

AI Technical Summary

Problems solved by technology

[0002] There are two heavy water reactor nuclear power units in the third plant of China National Nuclear Corporation. Its main advantage is non-stop refueling. A corresponding amount of spent fuel is discharged from the reactor every day and stored in the fuel pool. Due to the limited capacity of the fuel pool to store spent fuel , can only be stored for 6.5 years. If the spent fuel in the fuel tank is not transferred out, the fuel tank of the reactor cannot be unloaded, and the reactivity in the reactor will decrease, resulting in power reduction of the unit or forced shutdown

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