PX-An Innovative Safety Concept for an Unmanned Reactor

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• 作者：Sung-Jae Yi ; ^{sjlee2@kaeri.re.kr" class="auth_mail" title="E-mail the corresponding author} ; Chul-Hwa Song ; Hyun-Sik Park
• 关键词：Cooling geometry ; Fast heat transfer ; Passive system ; PX ; Unmanned reactor
• 刊名：Nuclear Engineering and Technology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：48
• 期：1
• 页码：268-273
• 全文大小：1638 K

文摘

An innovative safety concept for a light water reactor has been developed at the Korea Atomic Energy Research Institute. It is a unique concept that adopts both a fast heat transfer mechanism for a small containment and a changing mechanism of the cooling geometry to take advantage of the potential, thermal, and dynamic energies of the cold water in the containment. It can bring about rapid cooling of the containment and long-term cooling of the decay heat. By virtue of this innovative concept, nuclear fuel damage events can be prevented. The ultimate heat transfer mechanism contributes to minimization of the heat exchanger size and containment volume. A small containment can ensure the underground construction, which can use river or seawater as an ultimate heat sink. The changing mechanism of the cooling geometry simplifies several safety systems and unifies diverse functions. Simplicity of the present safety system does not require any operator actions during events or accidents. Therefore, the unique safety concept of PX can realize both economic competitiveness and inherent safety.