CAJ | 학술논문

为了保证余热锅炉安全运行，预防爆炸事故发生，利用FMECA方法和模糊FTA方法，研究余热锅炉事故致因。通过对余热锅炉潜在危险因素的分析辨别，探讨设备故障类型、原因及相应处理方法，引入模糊FTA对余热锅炉爆炸事故定性和定量分析，进而构建了基于FMECA与模糊FTA的余热锅炉安全分析框架，并计算得出事故发生的模糊概率以及对基本事件的敏感性分析。研究表明，余热锅炉系统的可靠度大约为96.92％，未按规定排污，报警器失灵，安全阀压力连接管堵塞及除氧器不合格事件对顶事件发生概率的影响最大，从而为该系统的安全决策提供支持。
위료보증여열과로안전운행，예방폭작사고발생，이용FMECA방법화모호FTA방법，연구여열과로사고치인。통과대여열과로잠재위험인소적분석변별，탐토설비고장류형、원인급상응처리방법，인입모호FTA대여열과로폭작사고정성화정량분석，진이구건료기우FMECA여모호FTA적여열과로안전분석광가，병계산득출사고발생적모호개솔이급대기본사건적민감성분석。연구표명，여열과로계통적가고도대약위96.92％，미안규정배오，보경기실령，안전벌압력련접관도새급제양기불합격사건대정사건발생개솔적영향최대，종이위해계통적안전결책제공지지。
In order to ensure the safe operation of waste heat boiler and prevent explosion accident , the FMECA and fuzzy FTA methods were applied to study the accident causes of waste heat boiler .Through analysis and identi-fication on potential risk factors of waste heat boiler , the types, reasons and corresponding solutions of equipment faults were explored .The fuzzy FTA was introduced to qualitatively and quantitatively analyze the explosion acci-dents of waste heat boiler , the framework of safety analysis on waste heat boiler based on FMECA and fuzzy FTA was constructed , and the fuzzy probability of the accident and the sensitivity analysis on the basic events were also acquired .It showed that the reliability of waste heat boiler is approximately 96 .92%, and the events including drain contamination without according to stipulations , malfunction of alarm, pressure connection tube plugging of safety valve and unqualified deaerator have the biggest impact on the occurrence probability of top event .It provides support for the safety decision of this system .