CAJ | 학술논문

　　针对安全仪表系统安全完整性等级验证（SIL）和机械装置的失效模式、影响及诊断分析（FMEDA）缺乏特定工厂环境、联锁回路中的产品（如阀门、变送器、逻辑控制器等）失效数据这一关键不足，提出了一种基于主观估计法和皮尔逊卡方检验法的失效数据分析方法，并以丙烯腈反应器出口温度高联锁回路中的气动薄膜调节阀为例，应用该方法估计产品寿命分布和实际失效率；应用机械FMEDA法和故障树（FTA）法对回路进行SIL验证，给出改进措施。结果表明，应用该方法获取的产品失效数据对相应联锁回路进行SIL验证比应用国外通用数据库更准确。
　　침대안전의표계통안전완정성등급험증（SIL）화궤계장치적실효모식、영향급진단분석（FMEDA）결핍특정공엄배경、련쇄회로중적산품（여벌문、변송기、라집공제기등）실효수거저일관건불족，제출료일충기우주관고계법화피이손잡방검험법적실효수거분석방법，병이병희정반응기출구온도고련쇄회로중적기동박막조절벌위례，응용해방법고계산품수명분포화실제실효솔；응용궤계FMEDA법화고장수（FTA）법대회로진행SIL험증，급출개진조시。결과표명，응용해방법획취적산품실효수거대상응련쇄회로진행SIL험증비응용국외통용수거고경준학。
To solve the key defect that Safety Integrity Level(SIL)verification of safety instrumented system and mechanism Failure Modes, Effects and Diagnostic Analysis(FMEDA)both lack in product(such as valves, transmitters and logic controllers and so on)failure rates obtained from special factory environment and interlock loops, a new method based on subjective esti-mation method and Pearson chi-square method is proposed to analyze failure data. The method is applied to estimate the life dis-tribution and actual failure rate of pneumatic diaphragm control valve used in the interlock loop upon high exit temperature of acrylonitrile reactor. SIL verification of the loop is carried out by mechanism FMEDA and Fault Tree Analysis and further sug-gestions are presented. The result shows that SIL verification with data provided by the method is more accurate than others with foreign databases.