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首页> 外文会议>Proceedings of the international topical meeting on advanced reactors safety >Long-Term Passive CANDU Containment Response After a Design-Basis Accident
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Long-Term Passive CANDU Containment Response After a Design-Basis Accident

机译：设计基准事故后的长期被动CANDU遏制响应

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摘要

A "passive" CANDU® containment system, currently being developed, is aimed at limiting the consequences of a postulated accident, by ensuring the structural integrity of the containment building and limiting fission-product release to within siting dose limits, without operator action or reliance on ac power for up to 3 d. All main functions of the containment system, i.e. energy removal, hydrogen mitigation, and fission-product retention, are to be accomplished passively.rnThe passive CANDU containment relies on the passive emergency water system (PEWS) for energy removal after an accident and on passive autocatalytic recombiners (PAR) for hydrogen removal. The key feature of this concept, is a recirculating, buoyancy-driven flow through the recombiners and the tube banks of the PEWS.rnThis paper presents preliminary design calculations for the PEWS tank and tube banks and a simulation of the long-term passive containment response, based on the current CANDU-6 containment, to a large loss-of-coolant/loss-of-emergency coolant injection (LOCA/LOECI) using the GOTHIC code. It is shown that a 1500-m~3 PEWS tank, connected to tube banks with a total surface area of 1800 m~2, can limit the second pressure peak to about 300 kPa(a) if a recirculating flow is established in the containment building. The PEWS tank water is boiling in the long term, and the peak containment temperature is 114℃.
机译：当前正在开发的“被动式”CANDU®密闭系统旨在通过确保密闭建筑物的结构完整性并将裂变产物的释放限制在选址剂量范围内，从而限制假定的事故后果，而无需操作员采取行动或依靠使用交流电源最多3 d。密闭系统的所有主要功能，即能量去除，减氢和裂变产物保留，都必须被动完成。rn被动CANDU密闭依靠被动应急水系统（PEWS）来在事故发生后去除能量，并依靠被动自催化重组器（PAR）用于除氢。该概念的关键特征是通过PEWS的重组器和管束的再循环，浮力驱动的流动。本文介绍了PEWS储罐和管束的初步设计计算以及长期被动安全壳响应的模拟，根据当前的CANDU-6密闭度，使用GOTHIC代码进行大量的冷却液损失/紧急情况下的冷却液注入（LOCA / LOECI）。结果表明，如果在安全壳中建立了循环流，则连接到总表面积为1800 m〜2的管束的1500 m〜3 PEWS储罐可以将第二个压力峰值限制在300 kPa（a）左右。建造。 PEWS储罐水长期处于沸腾状态，最高安全壳温度为114℃。

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  • 来源
  • 会议地点 Orlando FL(US)
  • 作者

    M. Krause; P.M. Mathew; N.J. Spinks; Y.S. Chin;

  • 作者单位

    Atomic Energy of Canada Limited Containment Analysis Branch Whiteshell Laboratories Pinawa, MB, Canada R0E 1L0;

    Atomic Energy of Canada Limited Containment Analysis Branch Whiteshell Laboratories Pinawa, MB, Canada R0E 1L0;

    Atomic Energy of Canada Limited Containment Analysis Branch Whiteshell Laboratories Pinawa, MB, Canada R0E 1L0;

    Atomic Energy of Canada Limited Containment Analysis Branch Whiteshell Laboratories Pinawa, MB, Canada R0E 1L0;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 反应堆安全与控制;
  • 关键词

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