Fuel storage tank for nuclear power plant spent fuel dry-type storage

A technology for spent fuel and nuclear power plants, which is applied in the field of dry storage of spent fuel in nuclear power plants, can solve the problems that operators are exposed to large radiation doses, the fuel storage tanks cannot be reused, and the welding grooves are difficult to process, so as to achieve the realization of reuse. , Fast loading and retrieval, ensuring the effect of sealing performance
CN105261402AActive Publication Date: 2016-01-20CHINA NUCLEAR POWER DESIGN COMPANY +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NUCLEAR POWER DESIGN COMPANY
Publication Date
2016-01-20

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Abstract

The invention discloses a fuel storage tank for nuclear power plant spent fuel dry-type storage. The fuel storage tank comprises a storage tank body and a storage tank support structure fixed at the periphery of the storage tank body. The storage tank body comprises a cylinder, an outer top cover, an inner top cover, a flange and a base plate. The base plate is fixedly connected at the bottom of the cylinder. The flange is fixedly connected at the top of the cylinder. The top of the flange is equipped with a step sealing surface. The inner top cover and the outer top cover are connected with different steps of the step sealing surface of the flange through bolts. Compared with the prior art, the fuel storage tank employs a flange-type top cover structure, thus the fuel storage tank top cover sealing performance is ensured, and the sealing operation difficulty is lowered. A spent fuel assembly can be loaded and taken out and recycle of the fuel storage tank can be achieved.
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Description

technical field

[0001] The invention relates to the field of nuclear power plant spent fuel dry storage, and more specifically, the invention relates to a fuel storage tank for spent fuel dry storage. Background technique

[0002] At present, the mainstream dry storage scheme for spent fuel in the world is the concrete silo storage scheme, and its basic container includes two fuel storage tanks and concrete silos. Among them, the fuel storage tank is used to load spent fuel components and contain radioactivity. It is generally a steel sealed container filled with a certain pressure of inert gas to provide an inert storage environment for spent fuel components; concrete silos are used to store fuel storage tanks , provide the function of shielding and physical isolation, and conduct the heat release inside the fuel storage tank in a passive way.

[0003] The main functions of the fuel storage tank are: 1) providing a seal to contain radioactive substances; 2) providing struc...

Claims

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