共查询到19条相似文献,搜索用时 78 毫秒
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介绍了对福岛事故中应急柴油发电机组运行情况,并针对我国核电厂应急柴油发电机组现状进行了分析,从加强核电站应急供电系统可靠性的角度,提出了移动式应急柴油发电机组的改进方案和具体实施措施,进一步完善了核电厂应急电源供电策略和纵深防御体系。 相似文献
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通过开展严重事故下功能需求分析、中压应急移动电源的带载能力分析,结合人员可达性、操作时效性要求,给出了严重事故期间中压应急移动电源的应用策略,完善了严重事故应对手段. 相似文献
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介绍某核电项目调试过程中应急柴油发电机组启机失败的过程、原因、整改措施及处理结果,为今后该类型问题的解决提供参考。 相似文献
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核电站应急柴油发电机组作为核电站的应急电源,是保证核电站安全运营的最后一道屏障,而机组的调速系统作为机组的核心控制部件,对机组的稳定可靠运行起着至关重要的作用。对核电站应急柴油发电机组调速系统的工作原理、工作模式及常见故障进行分析,为应急柴油发电机组的成套设计提供参考。 相似文献
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铀矿冶井巷工程的电力保障工作受气候、地质、施工条件等因素限制存在诸多不可接受风险,须因地制宜开展研究工作,配备柴油发电机组作为应急电源,以提高供电系统安全度,确保极端情况下的安全生产。 相似文献
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核电是1种新能源,核电厂的安全稳定运行受到社会的广泛关注.文中利用PCRAN软件仿真分析了WWER1000核电厂一回路失水、蒸汽管道破裂及蒸汽发生器传热管断裂事故,研究了核电厂的事故过程及暂态运行特性,比较分析了不同破口的失水事故、蒸汽管道破裂事故以及单根和多根蒸汽发生器传热管断裂事故时核电厂暂态运行特性.结果表明:核电厂发生大破口失水事故、蒸汽管道大破裂事故及多根U型传热管完全断裂事故可能会对核电厂安全产生较严重影响,同时,核电厂内部发生严重事故导致核电厂紧急停堆、停机,对电网会造成影响. 相似文献
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V. G. Petrosyan E. A. Yeghoyan A. D. Grigoryan A. P. Petrosyan M. R. Movsisyan 《Thermal Engineering》2018,65(2):79-87
One of the main objectives of severe accident management at a nuclear power plant is to protect the integrity of the containment, for which the most serious threat is possible ignition of the generated hydrogen. There should be a monitoring system providing information support of NPP personnel, ensuring data on the current state of a containment gaseous environment and trends in its composition changes. Monitoring systems’ requisite characteristics definition issues are considered by the example of a particular power unit. Major characteristics important for proper information support are discussed. Some features of progression of severe accident scenarios at considered power unit are described and a possible influence of the hydrogen concentration monitoring system performance on the information support reliability in a severe accident is analyzed. The analysis results show that the following technical characteristics of the combustible gas monitoring systems are important for the proper information support of NPP personnel in the event of a severe accident at a nuclear power plant: measured parameters, measuring ranges and errors, update rate, minimum detectable concentration of combustible gas, monitoring reference points, environmental qualification parameters of the system components. For NPP power units with WWER-440/270 (230) type reactors, which have a relatively small containment volume, the update period for measurement results is a critical characteristic of the containment combustible gas monitoring system, and the choice of monitoring reference points should be focused not so much on the definition of places of possible hydrogen pockets but rather on the definition of places of a possible combustible mixture formation. It may be necessary for the above-mentioned power units to include in the emergency operating procedures measures aimed at a timely heat removal reduction from the containment environment if there are signs of a severe accident phase approaching to prevent a combustible mixture formation in the containment. 相似文献
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AP1000核电厂220 kV辅助电源与施工电源采用共建的设计方案时,需考虑其安全性,以满足核安全相关法规和准则的需要.以辽宁徐大堡核电厂为例,采用定性分析的方法,对徐大堡核电厂辅助电源与施工电源采用共建方案进行了初步的安全分析,论证其可行性. 相似文献
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