HAZOP分析中LOPA的应用研究

Study on Application of LOPA in HAZOP

通过分析危险与可操作性研究(HAZOP)方法的不足和保护层分析(LOPA)方法的功能,提出将LOPA融入HAZOP分析中,能进一步提高HAZOP的事故预防能力和丰富HAZOP的分析结果。介绍LOPA基本方法,阐述LOPA融入HAZOP的机理、衔接关系及分析步骤,并通过一个化工工艺流程危险性分析实例说明LOPA的作用及如何将LOPA融入HAZOP分析中。结果表明:在HAZOP分析中融入LOPA方法,能实现对现有保护措施的可靠性进行量化评估,确定其消除或降低风险的能力,从而寻求是否需要附加减少风险的安全保护措施。

Based on the analysis of the deficiencies of Hazard and Operability study （HAZOP） and the function of Layer of Protection Analysis （ LOPA）, it is presented that the integration of HAZOP with LOPA can greatly improve HAZOP＇s abihty to prevent accidents and enrich its analysis results. This article firstly introduces LOPA method, and elaborates the mechanism of integrating LOPA into HAZOP, their connec- tion relation and the analysis step of the integrated method. Then, an example of chemical process hazard analysis is given to illustrate LOPA＇s function played in HAZOP and how to integrate LOPA into HAZOP. The result indicates that the integrated method can make a quantitative assessment on the reliability of the existing to learn safeguards , determine their ability to eliminate or reduce risks, which is helpful for risk managers whether additional safeguards are needed to install into the system.