Nuclear technology equipment including containment and depressurization systems
A nuclear technology and containment technology, applied in nuclear engineering, nuclear power generation, reactor fuel elements, etc., to achieve the effect of effective H2/CO decomposition and component reduction
Active Publication Date: 2017-04-12
FRAMATOME ANP
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Nevertheless, it cannot be guaranteed in all cases that H 2 break down
Method used
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[0063] Identical or identically acting components are provided with the same reference symbols in all figures.
[0064] figure 1 The partially illustrated nuclear technology installation 2 is a nuclear power plant, for example of the pressurized water reactor type or boiling water reactor type. The nuclear technology installation 2 has a containment vessel 4 , also referred to as the reactor vessel, which here is in the form of a steel hood which is only partially visible. The containment vessel 4 hermetically isolates the nuclear system components and non-nuclear system components in the inner chamber 6 from the environment in the outer chamber 8 .
[0065] In order to be able to reduce the excess pressure in the inner chamber 6 due to the release of steam and gases in the event of an accident, a pressure relief line 10 is led through the containment vessel 4 . The pressure relief line 10 forms part of a pressure relief system 12 . During normal operation of the nuclear in...
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The invention is based on the task of strengthening a nuclear technology installation (2) comprising a containment vessel (4) and at least one pressure relief line (10) extending from the containment vessel (4) and being able to be closed with a shut-off valve (14) in such a way that Wherein the pressure relief flow can flow through the pressure relief line when the shut-off valve (14) is opened during the pressure relief operation, i.e. it is designed for particularly reliable control while releasing hydrogen (H2) and / or carbon monoxide (CO) in a safe Critical occasions where a significant pressure rise occurs within the shell (4). To this end, according to the invention, each pressure relief line (10) is provided before the inlet side with a gas flow treatment device (24) located in the containment (4), which has a gas flow treatment device surrounded by a side peripheral surface (28) and has The chimney-shaped flow channel (26) of the lower inlet hole (30) and the upper inlet outlet (32), wherein the hydrogen gas in the lower inlet hole (30) or in the region is provided with a (H2) and / or carbon monoxide (CO) of the first set of catalytic components (34), and the pressure relief line (10) has a The inlet (22) provided in the peripheral surface (28), so that there is hydrogen (H2) and / or hydrogen (H2) and / or In the event of a critical failure or accident of carbon monoxide (CO) release, the flow channel (26) will flow through the gas mixture located in the containment (4) from bottom to top according to the principle of natural convection. The principle flows into the flow channel ( 26 ) from below and preferably also from above and flows away as relief flow through the relief line ( 10 ).
Description
technical field [0001] The invention relates to a nuclear technology installation comprising a containment vessel and at least one relief line extending from the containment vessel and capable of being closed with a shut-off valve, through which a relief flow can flow during a relief operation when the shut-off valve is opened. Pressure pipeline. Background technique [0002] In the event of failures and accidents in nuclear power plants, relatively large quantities of hydrogen and carbon monoxide, as well as water vapor, may be released into containment containers, also known as reactor enclosures, enclosures, or containment vessels, which separate the internal environment from the The outside environment is shielded in an airtight manner. [0003] If no countermeasures are taken, it may occur that flammable gases may accumulate in the secure container environment, with the result that an explosive mixture may form. In addition, especially in the case of release of steam ...
Claims
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IPC IPC(8): G21C9/004G21C9/06G21C19/317
CPCG21C9/004G21C9/06G21C19/317Y02E30/30G21C13/02G21C19/303
Inventor S·布尔曼伯恩特·艾卡特诺伯特·洛施
Owner FRAMATOME ANP