Secondary neutron source rod

A secondary neutron and neutron source technology, applied in the field of nuclear power, can solve problems such as affecting the health of nuclear power plant workers, in vivo exposure hazards, and low metabolic rate, to reduce the risk of melting, reduce tritium emissions, and improve heat transfer performance. Effect

Pending Publication Date: 2022-03-22
CHINA NUCLEAR POWER TECH RES INST CO LTD +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low metabolic rate of organic tritium in organisms and the gradual enrichment with the migration of nutrients in the food chain, it will cause continuous internal radiation hazards to organisms
[0010] (2) Harm to the human body
[0013] Tritium is easy to permeate in the cladding tube of the currently used secondary neutron source rod, so radioactive tritium easily penetrates the cladding tube and enters the coolant, causing pollution, which greatly affects the health of nuclear power plant workers

Method used

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Embodiment Construction

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that, unless otherwise clearly stipulated and limited, if terms such as "connection", "fixation" and "installation" appear in the text, they should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, or It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element, or one or more intervening elements may also be present. If the terms "first", "second", "third", etc. appear in the text, they are ...

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Abstract

The invention provides a secondary neutron source rod which comprises an outer cladding and an inner pipe section arranged in the outer cladding, the inner pipe section comprises an inner cladding, a neutron source core block used for providing neutrons and a lining pipe used for adsorbing tritium, the neutron source core block and the lining pipe are arranged in the inner cladding, a hole is formed in the center of the neutron source core block, the lining pipe is axially arranged in the hole in a penetrating mode, and the neutron source core block is arranged in the inner cladding. And tritium generated by the neutron source pellet is adsorbed. The secondary neutron source rod can reduce tritium emission, protect the health of nuclear power station workers, and reduce the risk of neutron source material melting at the same time.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a secondary neutron source rod. Background technique [0002] Most pressurized water reactors (Pressurized Water Reactor; a nuclear reactor that uses high-pressure water to cool nuclear fuel) usually include fuel assemblies, moderators, control rod assemblies, burnable poison assemblies, neutron source rods, core baskets, and pressure vessels etc. It belongs to the type of reactor with a large number of applications and a large capacity in nuclear power plants. [0003] Neutron source rods provide initial neutron levels for reactor charging and start-up to meet oversight requirements. The neutron source rods include primary neutron source rods (Primary Neutron Source Assembly) and secondary neutron source rods (Secondary Neutron Source Assembly). [0004] The secondary neutron source assembly is equipped with several secondary neutron source rods, and the rest are resista...

Claims

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Application Information

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IPC IPC(8): G21C7/103G21G4/02
CPCG21C7/103G21G4/02Y02E30/30
Inventor曹进蔡智毅张利斌林少芳李长征李颖虹宋子凡邓勇军聂立红陈建新
OwnerCHINA NUCLEAR POWER TECH RES INST CO LTD