by Michael D. Scott, P.E., aeSolutions Founder
This paper will discuss how quantitative methods can be utilized to select the appropriate Safety Integrity Level associated with Burner Management Systems. Identifying the required amount of risk reduction is extremely important especially when evaluating existing legacy Burner Management Systems. Selection of an overly conservative Safety Integrity Level can have significant cost impacts. These costs will either be associated with increased Safety Instrumented System functional testing or complete removal / upgrade of the existing Burner Management System. In today’s highly competitive business environment, unnecessary costs of any kind cannot be tolerated.
KEYWORDS: IEC/ISA 61511, Safety Instrumented Systems, BurnerManagement Systems, Safety Integrity Level, Probability of Failure on Demand