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The 2nd edition of IEC 61511 now requires – by use of the word “shall” – that a Stage 4 Functional Safety Assessment (FSA) be conducted...

OSHA contended that the boiler was interconnected to a covered process through the refinery fuel gas system and steam header. The 10th Circu

by Richard E. Hanner & aeSolutions Technical Team There are many critical activities and decisions that take place prior to and during the Safety Integrity Level (SIL) Verification and other Conceptual Design phases of projects conforming to ISA84 & ISA/IEC 61511. These activities and decisions introduce either opportunities to optimize, or obstacles that impede project flow, depending when and how these decisions are managed. Implementing Safety Instrumented System (SIS) pr

by aeSolutions Technical Team 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 Sa

This paper will discuss the issues, decisions, and challenges encountered when attempting to initially apply the concepts of the Safety Life

Implementing a Safety Instrumented Burner Management (SI‐BMS) can be challenging, costly, and time consuming. Simply identifying design shor

This paper will cover: the development of a SIS front end loading package the project cost savings realized attributed to following the saf

A systematic database approach can be used to design, develop and test a Safety Instrumented System (SIS) using methodologies that are in co

Are random hardware failures the only thing that cause a safety instrumented function (SIF) to fail? What if our assumptions are wrong? What