By layer of protection analysis (LOPA), we can decide whether the system safe or not.
对分析结果进行防护层分析，可以确定系统是否达到安全要求。
This paper introduces the process of protection layer analysis, and USES the examples to illustrate each step of the analysis.
主要介绍保护层分析的步骤，并结合实际工艺案例加以说明。
According to field structural testing and environmental analysis, the main factor, which causes reinforcement corrosion, is due to construction quality of concrete protection layer.
经现场结构检测与环境分析，发现混凝土保护层的施工质量及偏差是引起目前钢筋腐蚀的主要原因。
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