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首页> 外文会议>International meeting on severe accident assessment and management 2012: Lessons learned from fukushima dai-ichi >SUCCESSFUL COLD SHUT DOWN OF ONAGAWA: THE CLOSEST NPS TO THE 3/11/'11 EPICENTER
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SUCCESSFUL COLD SHUT DOWN OF ONAGAWA: THE CLOSEST NPS TO THE 3/11/'11 EPICENTER

机译：成功切断奥那加瓦河：11年3月11日EPICENTER最近的NPS

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摘要

This paper presents the primary factors that Onagawa nuclear power station (NPS) reached a state of cold shut down, even though it suffered the highest ground acceleration and tsunami which was comparable to that of Fukushima Daiichi NPS. The key points for safety cold shutdown was, first, plant site level was higher than the maximum tsunami height level; next, emergency diesel generator for each unit and one of the off-site electrical power lines remained available. In addition to the above factor, preparedness (such as seismic reinforcements for all three units, update the tsunami prediction where appropriate, and continuous drills for fire and simulator trainings for loss of off-site-power) contributed greatly. However, we must achieve higher standards of safety. From Fukushima Daiichi accident, we learned that it is important to protect from flooding, to enhance electric power supply system and confinement system. We have already taken some safety measures such as the construction of levee whose height is 17m above sea level, and the installation of air-cooled diesel generator. We will continue to implement various enhancements in order to avoid a similar severe accident again. Moreover, as further steps, we are planning to set up the mitigation system such as a filtered primary containment vessel (PCV) venting system.
机译：本文介绍了尽管Onongawa核电站遭受了最高的地面加速和海啸，但其可与福岛第一核电站相提并论，但其达到冷关闭状态的主要因素。安全冷停车的关键点是，首先，工厂现场的水位高于海啸的最高高度。接下来，每个单元的应急柴油发电机和一条场外电力线仍然可用。除上述因素外，备灾工作（例如，对所有三个单位进行地震加固，在适当的情况下更新海啸预测，进行连续演习以进行失火和模拟器培训以减少场外电力）也发挥了重要作用。但是，我们必须达到更高的安全标准。从福岛第一核电站事故中，我们了解到防洪，加强电力供应系统和封闭系统非常重要。我们已经采取了一些安全措施，例如修建海拔17m的堤岸，以及安装风冷柴油发电机。我们将继续实施各种增强功能，以避免再次发生类似的严重事故。此外，作为进一步的步骤，我们计划建立缓解系统，例如过滤后的主安全壳（PCV）通风系统。

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