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Stable startup system for a nuclear reactor

A technology for nuclear reactors and startup systems, applied in nuclear reactors, reactors, thermal reactors, etc., can solve problems such as unstable startup of natural circulation nuclear reactors

Active Publication Date: 2013-02-13
NUSCALE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The close connection between nuclear physics and thermodynamics makes the start-up of a natural circulation nuclear reactor potentially unstable when the control rods are raised to bring the core to a critical state where heat is added to the fluid

Method used

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  • Stable startup system for a nuclear reactor
  • Stable startup system for a nuclear reactor
  • Stable startup system for a nuclear reactor

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Embodiment Construction

[0019] specific implementation plan

[0020] Passive reactor systems, including those that rely on natural circulation, have a reduced number of mechanically moving devices, motors, pumps, and connections compared to conventional systems that may require repair or ongoing maintenance during the lifetime of the reactor. Some degree of maintenance to the reactor may be acceptable when changing fuel or during intermediate periods of the reactor's useful life. However, by reducing or eliminating the number of maintenance periods, the reactor can be used for a longer duration, thereby increasing efficiency and effectively reducing the cost of the energy produced by the reactor.

[0021] figure 2 A novel power module assembly 25 including a stable start system 20 is shown. The stable start system 20 may generate heat to provide initial fluid flow and establish operating temperature and pressure conditions of the power module assembly 25 . In one embodiment, the operating tempera...

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Abstract

A nuclear reactor module includes a reactor vessel containing coolant, a reactor core submerged in the coolant, and a heat exchanger configured to remove heat from the coolant. The nuclear reactor module further includes one or more heaters configured to add heat to the coolant during a startup operation and prior to the reactor core going critical.

Description

Background technique [0001] In a nuclear reactor designed with a passive operating system, the laws of physics are applied to ensure that, during normal operation, or even in an emergency, safe operation of the nuclear reactor can be maintained for at least some period of time without operator intervention or supervision scheduled time. The Multi-Application SmallLight Water Reactor, implemented with support from the Idaho National Engineering and Environmental Laboratory, NEXANT, and the Nuclear Engineering Department of Oregon State University Water Reactor) project seeks to develop a safe and economical natural light water reactor. figure 1 One nuclear reactor design5 derived from this project is shown. [0002] The nuclear reactor design 5 includes a reactor core 6 surrounded by a reactor vessel 2 . Water 10 in the reactor vessel 2 surrounds the reactor core 6 . The reactor core 6 is also located in a shield 22 which surrounds the reactor core 6 around its sides. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C1/08G21C15/26
CPCG21Y2004/302G21Y2002/207G21C15/26G21Y2004/40G21C1/08Y02E30/40Y02E30/30
Inventor J·N·雷斯J·T·格鲁姆吴樵B·G·伍兹T·S·帕尔默
Owner NUSCALE LLC