(71bh) PROBLEMS AND RESOLUTIONS OF SIS ENGINEERING APPLICATION

This article systematically introduced the basic conceptions of safety instrumented system (SIS), safety instrumented function (SIF), safety instrumented levels(SIL)  as well as SIS specific methods in the practical application, pointed out problems and resolutions of SIS in domestic engineering application, thereby it can help operators to analyze, judge and solve SIS problems in production and design.