基于FMECA的城市地铁火灾危险源辨识及风险防范

在基于FMECA方法和地铁火灾危险源识别的基础上,介绍了FMECA的工作原理和具体方法,选取成都地铁一号线车站FAS系统为研究对象,对地铁FAS系统的可靠性进行了风险分析,并提出相应改进措施：技术方面设计遵守国家规范和消防标准、制订备用方案、安装完成后进行功能性测试;制定规范的设备采购流程;运营管理时应建立FAS系统相应规程、建立健全消防安全管理制度等。     

某型自行火炮通信系统在线检测仪的设计

介绍了便携式某型自行火炮通信系统在线检测仪的设计;并对数据采集系统和监测、管理等分系统的功能进行了分析.探讨了通信系统RBD框图的建立与存储、系统FMECA设计、运用神经网络的模块化设计、基于故障树的专家系统模块设计.     

Matrix Approach to Analysis of Human Errors and their Prevention by Quality Engineering and Managerial Tools

We apply well‐known quality engineering matrix techniques such as quality function deployment; Teoriya Resheniya Izobretatelskikh Zadatch (TRIZ); and failure mode, effects, and criticality analysis for characterizing, mapping, and preventing human error (or, at least, reducing damage caused by errors). Human errors (‘WHATs’, in the language of quality function deployment) are classified according to 10 characteristics, while 20 typical types (or protective layers)—‘HOWs’—in quality assurance systems are proposed for preventing/stopping/minimizing to some extent damage caused by the error. During the analysis of a specific system, any error is estimated according to its likelihood and severity, and every protective layer receives a score according to its effectiveness in preventing errors. Synergy or antagonism between protective layers may also be taken into account when calculating the effectiveness. The approach facilitates evaluation and comparison of the effectiveness of different quality assurance systems dealing with human errors. The authors emphasize the need to create a ‘recipe book’ based on a historical database, which will enable, after characterizing the potential human errors according to the 10 criteria mentioned earlier, application of the optimal prevention efforts. The proposed approach is illustrated by an example of product delivery errors analysis. Copyright © 2015 John Wiley & Sons, Ltd.     

压水堆堆内构件老化评估方法及其应用

本文介绍了压水堆堆内构件老化分析评定方法。该方法通过建立老化机理筛选准则、初步分类、堆内构件的故障模式、影响及危害分析(FMECA)以及识别主要潜在老化部件等步骤,最终完成堆内构件老化程度的评估。老化评估结果为堆内构件的老化管理奠定基础。该老化评估方法已首次成功应用于秦山CNP320机组和CNP650机组堆内构件的老化评估。     

基于模糊综合层次评判法的精密齿轮制造工艺优化优先度分析

传统故障模式影响及危害度分析(FMECA)多应用于产品故障模式风险分析,而未涉及产品制造流程工艺参数优化优先度分析,且其风险优先数(RPN)分析无法对严酷度、发生概率和检测难易程度进行权重分配。因而参照传统FMECA中的RPN分析方法,以精密齿轮制造工艺流程为研究对象,并考虑齿轮制造当前工艺水平和工艺改进成本等因素,提出优化优先数分析法从而代替RPN分析法,并结合层次分析法-模糊综合评判的方法对齿轮制造流程的各个工艺参数进行优化优先等级评判并排序。最终根据评判结果,提出对重要工艺参数改进的方案,从而提升精密齿轮产品的可靠性和保障性水平。     

关于船用泵产品设计研制阶段可靠性分配方法的研究

采用传统可靠性分配方法进行泵类产品设计研制阶段可靠性指标分配时存在各种不足,文中提出了一种基于FMECA技术及T-FAHP法的可靠性分配新方法。该方法利用相似产品的FMECA分析结果,采用三标度模糊层次分析方法构建产品各功能部件各风险评价因子的判断矩阵,在综合考虑设计者意愿、顾客反馈及专家意见的基础上确定各功能部件的可靠性指标分配权重,使分配结果更加符合工程实际。最后通过实例计算证明了方法的科学性和合理性。     

基于FMECA的智能电能表关键元器件风险评估

基于FMECA相关理论与风险优先数方法,对智能电表的关键元器件开展风险评估工作。文中针对故障树与FMEA方法不足提出将FMECA方法应用于智能电表的质量评估工作;随后,依据智能电表的实际情况对风险优先数方法进行了优化;最后,结合某省2018年智能电表故障统计数据,对智能电表关键元器件进行风险评估并给出排序结果,为智能电表的设计、生产与质量提升工作提供参考依据。     

Multi-criteria risk analysis to improve safety in manufacturing systems

The drive to lower operating costs and improve manufacturing efficiency has led many manufacturing companies to implement different methodologies in order to identify a suitable risk assessment model. So, the concern for safety in industrial activities, both inside the establishments and in their surroundings, has a crucial role. As a result, many laws, regulations and risk analysis techniques are well adapted to industry needs since they were developed for its purpose. However increasing safety is often difficult, especially when you have already obtained good results, so the aim of our paper is the proposal of a new methodological approach called the safety improve risk assessment (SIRA) by integrating the conventional aspects of the popular failure mode, effects, and criticality analysis (FMECA) procedure with economic considerations in order to take into account the risk and to minimise the total safety costs by defining a specific index called total risk priority number (TRPN) index. The index proposed is based on the improved risk priority number (IRPN) and the analytic network process (ANP), a multi-criteria decision-making technique.     

传统糕点食品质量安全控制技术研究

以我国传统糕点食品(月饼)质量安全控制技术为研究对象,以HACCP理论、FMECA方法和模糊分析为核心,结合ISO22000:2005<食品安全管理体系-对食物链中任何组织的要求>和PDCA循环理论,研究一套高效实用的我国传统糕点食品质量安全控制方法,建立一套质量安全控制体系,实现传统糕点食品质量安全控制技术的提高,保障其质量安全.     

基于FMECA知识的故障诊断贝叶斯网络建模研究

为了构建具有较完备知识的贝叶斯网络诊断模型,提出了一种基于FMECA知识的故障诊断贝叶斯网络建模方法,该方法根据产品FMECA分析所得故障模式、故障原因、故障影响之间的因果关系构建贝叶斯网络拓扑结构,通过历史数据确定网络各节点的先验概率和条件概率分布,进而利用建立的贝叶斯网络进行故障诊断推理决策,最后通过某型飞机平视显示器的故障诊断贝叶斯网络建模及诊断实例,验证了方法的正确性及可行性。