Straight nuclear reactor fuel assembly refueling, loading and unloading technique

A nuclear reactor fuel and fuel assembly technology, applied in reactor fuel elements, reactors, nuclear engineering, etc., can solve the problems of inoperable spent fuel assemblies, increasing the radioactive dose level of the reactor building, and unfavorable control of the temperature and humidity of the reactor building, etc. To achieve the effect of improving economy, reducing cost and fast time

Active Publication Date: 2006-06-21
NUCLEAR POWER INSTITUTE OF CHINA
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AI Technical Summary

Problems solved by technology

Using this refueling operation process cannot operate the spent fuel assemblies located in the spent fuel pool in the reactor building when the reactor is running, which is not conducive to the control of the temperature and humidity of the reactor building, and increases the radioactive dose level of the reactor building

Method used

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  • Straight nuclear reactor fuel assembly refueling, loading and unloading technique
  • Straight nuclear reactor fuel assembly refueling, loading and unloading technique

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Embodiment Construction

[0009] Such as figure 1 and figure 2 As shown, a fuel assembly refueling and loading and unloading process for a straight-running nuclear reactor includes the following operations:

[0010] (1) The fuel transport container containing the new fuel assembly is hoisted to the fuel tank pool 5 by a 130-ton fuel plant crane; the 5-ton fuel plant auxiliary crane lifts the new fuel assembly from the tank to the new fuel inspection and storage room 12 Carry out inspection and storage; before refueling, transfer the new fuel assembly to the designated grid position of the spent fuel storage pool 4 for storage.

[0011] (2) When the reactor is shut down, the top cover of the reactor pressure vessel 1, the control rod drive mechanism, and some reactor internals are removed before refueling operation, and stored in the reactor internals storage pool 2. Open the refueling gate 11 between the reactor building 7 and the fuel building 8 and the connection gate 10 between the reactor pool 9...

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Abstract

The invention discloses a fuel component refueling handling technology of rectilinear atomic pile, which contains new fuel receiving, checking and storing, core refueling, spent fuel component transportation and sending, wherein the core refueling, spent fuel component transportation and sending is finished by digital control handler on the magnet track between the reactor pile department and fuel department. The invention improves the refueling efficiency and economity, which reduces the system cost and operator working strength.

Description

technical field [0001] The invention belongs to the improvement of a nuclear reactor fuel assembly refueling loading and unloading process. Background technique [0002] The existing pressurized water reactor nuclear power plants in my country, such as Qinshan Nuclear Power Plant and Daya Bay Nuclear Power Plant, use the underwater turning process to realize the transfer of fuel components between the nuclear reactor building and the fuel building. This refueling process and its system are complicated, have poor reliability, take a long time for refueling, and have a high probability of fuel assembly hoisting accidents, which pose a great threat to nuclear safety. The Tianwan NPP has no fuel building, and new fuel assemblies are stored above the solid waste repository, while spent fuel assemblies are stored in the spent fuel pool of the reactor building. Fuel loading and unloading and storage do not have the problem of transshipment of old and new fuel assemblies between th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/00
CPCY02E30/30
Inventor 秦忠刘勇罗树新黄新东
Owner NUCLEAR POWER INSTITUTE OF CHINA
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