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首页> 外文会议>Proceedings of the international topical meeting on advanced reactors safety >Tests of Passive Catalytic Recombiners (PARS) for Combustible Gas Control in Nuclear Power Plants
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Tests of Passive Catalytic Recombiners (PARS) for Combustible Gas Control in Nuclear Power Plants

机译：用于核电站中可燃气体控制的被动催化重组器（PARS）的测试

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摘要

This paper describes a test program supporting the introduction of passive autocatalytic recombiner (PAR) technology as an alternative to electric recombiners for controlling combustible gases produced in postulated accidents in both future Advanced Light Water Reactors (ALWRs) and operating nuclear plants. PARs catalyti-cally recombine hydrogen and oxygen, gradually producing heat and water vapor. They have no moving parts and are self-starting and self-feeding, even under relatively cold and wet containment conditions. Buoyancy of the hot gases they create sets up natural convective flow that promotes mixing of combustible gases in a containment. In non-inerted PWR or BWR containments, PARs alone can control radiolytic hydrogen produced in design basis accidents (DBAs). For certain operating and future PWRs in the US, PARs could be used in combination with igniters to control combustible gases produced by metal-water reaction in severe accidents. In pre-inerted BWRs, PARs can control oxygen buildup during DBAs (inerting itself controls severe accident combustible gases). Tests were performed on small-size models of two PAR designs. The effects of the following parameters on PAR recombination capacity were evaluated: initial hydrogen concentration, initial ambient gas temperature and pressure, steam and nitrogen as inertants, low oxygen as in a BWR, and potential poisons such as carbon monoxide and cable burn products. In addition, the effects of wetness and low ambient temperature on PAR startup delay time were studied. Data from this test program supplement the existing PAR test database with performance data under conditions of interest to US plants. Results support the general conclusion that PARs show great promise for being a cost-effective means for controlling combustible gases in ALWRs and operating plants worldwide.
机译：本文介绍了一个测试程序，该程序支持引入被动式自动催化重组器（PAR）技术，以替代电动重组器，以控制未来的先进轻水堆（ALWR）和运行中的核电厂在假定的事故中产生的可燃气体。 PAR催化地重组氢和氧，逐渐产生热量和水蒸气。它们没有运动部件，并且即使在相对寒冷和潮湿的密闭条件下也能自动启动和自动进给。它们产生的热气体的浮力建立了自然对流，从而促进了可燃气体在安全壳内的混合。在非惰性PWR或BWR密闭容器中，仅PAR就能控制设计基准事故（DBA）中产生的放射性氢。对于美国某些正在运行的PWR和未来的PWR，可将PAR与点火器结合使用，以控制严重事故中由金属与水反应产生的可燃气体。在预先惰化的BWR中，PAR可以控制DBA期间的氧气积累（惰化本身可以控制严重的事故可燃气体）。测试是在两种PAR设计的小型模型上进行的。评估了以下参数对PAR重组能力的影响：初始氢浓度，初始环境气体温度和压力，蒸汽和氮气作为惰性气体，BWR中的低氧气以及潜在的毒物，例如一氧化碳和电缆燃烧产物。此外，研究了潮湿和低环境温度对PAR启动延迟时间的影响。在美国工厂感兴趣的条件下，此测试程序中的数据补充了现有PAR测试数据库的性能数据。结果支持一个普遍的结论，即PARs有望成为控制ALWR和全球运营工厂中可燃气体的一种经济有效的手段。

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  • 来源
  • 会议地点 Orlando FL(US)
  • 作者

    O. Braillard; S. Guieu; J. Hosier; G. Sliter;

  • 作者单位

    Centre d'Etudes de Cadarache Commissariat a' l'Energie Atomique 13108 Saint Paul lez Durance, France;

    Service Etudes et Projets Thermiques et Nucleaires Electricity de France 12-14 Avenue Dutrievoz 69628 Villeurbanne, France;

    Nuclear Power Group Electric Power Research Institute 3412 Hillview Avenue Palo Alto, California 94303;

    Nuclear Power Group Electric Power Research Institute 3412 Hillview Avenue Palo Alto, California 94303;

  • 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;
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