共查询到19条相似文献,搜索用时 296 毫秒
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重水堆机组大修期间核燃料仍保持在堆芯,同样存在反应堆意外临界、堆芯余热不能正常导出引起燃料元件损坏等核安全风险,而且这种风险还由于停堆大修期间核电站系统配置薄弱、交叉作业多等因素而增加.文章分析了秦山三厂典型的大修关键路径安排中存在较大核安全风险的几个阶段,并介绍了在历次大修中结合重水堆机组特点所采取的一系列核安全风险管控措施,以确保机组大修期间的核安全. 相似文献
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秦山第三核电厂的CANDU-6型重水堆已经进入商业运行阶段,上海监督站在对重水堆的监督过程中遇到了一些新的问题,如重水泄漏与损失、燃料棒束包壳破损以及在电厂大修期间由启动仪表导致第一停堆系统误动作等.本文就这些特殊问题的处理原则进行探讨,并提出了自己的见解. 相似文献
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有效降低厂用电率并提高发电经济性将成为未来核电厂必须面对的现实性问题之一。本研究以秦山三期重水堆机组为对象,通过对重水堆慢化剂热传输系统的优化设计,将1号低压加热器入口凝结水作为慢化剂热交换器壳侧冷却水,利用慢化剂中的低品位热量可使1号低压加热器入口的凝结水温度提升近32℃,减少的低压缸抽气继续用于级中做功,产生的额外电能约为30.92 MW。对该系统优化设计的经济性评估,核电厂每年可新增收益2.11亿元,而核电厂需承担循环冷却水泵更换、管道安装等一次性改造成本约200万元。 相似文献
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A huge number of components are typically scheduled for maintenance when a nuclear power plant is shut down for its planned outage. Among these components, a number of them are risk significant so that their operability as well as reliability is of prime concern. Lack of proper maintenance for such components during the outage would impose substantial risk on the nuclear power plant (NPP) operation. 相似文献
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日本福岛核电事故虽然未对我国的环境造成严重影响,但是该事故的发生对我国后续核电的发展必然产生重大影响。我国庞大、密集的核电发展规划在世界能源发展领域是绝无仅有的,无论是在技术路线、标准制订还是在建造、运行的组织管理上,我国核电建设者和管理者都将面临巨大考验。通过分析和借鉴本次日本福岛核电事故的发生、处理过程,将对我国核电发展在多方面提供重要参考,从而促进我国核电规划及核电事故应急体系的持续完善。 相似文献
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Human cognitive reliability (HCR) model is a very useful quantitative model to the reliability research of nuclear power plant (NPP) operators based on simulators. The event non-response probability versus normalized time curve of HCR can be evaluated by statistical distributions such as three-parameter Weibull distribution and lognormal distribution. The paper analyses the HCR model and the characteristics of Chinese NPP operators. Firstly, two-parameter Weibull distribution is used to evaluate the fitting curve of HCR. Then the reliability of NPP operators and the verification of HCR model are studied. The research shows not only the quantitative results of Chinese NPP operators but also a new method to verify HCR model, and can be referred to the real NPP operation, and hence, is of importance to safe operation of NPP. 相似文献
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换料报告是营运单位在换料停堆前向国家核安全局提交的综合报告,主要描述换料停堆期间将要进行的所有维修,试验,在役检查,装卸料等活动。通过对该报告的审评来验证营运单位所计划的活动是否满足核安全规范的要求及核电厂安全运行的需要。本文介绍了国家核安全局对大亚湾核电站两台机组第三次停堆换料报告审评时所采用的方法及审评中发现的问题。 相似文献
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Correct communication between main control room (MCR) operators is an important factor in the management of emergency situations in nuclear power plants (NPPs). For this reason, a standard communication protocol for the management of emergency situations in NPPs has been developed, with the basic direction of enhancing the safety of NPPs and the standardization of communication protocols. To validate the newly developed standard communication protocol, validation experiments with 10 licensed NPP MCR operator teams was performed. From the validation experiments, it was found that the use of the standard communication protocol required more time, but it can contribute to the enhancement of the safety of NPPs by an operators’ better grasp of the safety-related parameters and a more efficient and clearer communication between NPP operators, while imposing little additional workloads on the NPP MCR operators. The standard communication protocol is expected to be used to train existing NPP MCR operators without much aversion, as well as new operators. 相似文献
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核电厂应急操作规程的几个问题 总被引:1,自引:1,他引:0
本文介绍了作者多年在核电厂模拟机事故培训中所积累的一些亲身体会,其中包括如何正确理解的使用应急规程,以及应急规程使用中对核电厂操纵人员的要求等。 相似文献
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