Our Stories

A collection of our Blogs, Articles, and Whitepapers

Don’t Dismiss Stage 4 of an SIS Functional Safety Assessment!

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

Linking PSM, NFPA, and ISA/IEC 61511 for Fired Equipment: The Wynnewood Refining Co. Case

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

Lessons Learned on SIL Verification and SIS Conceptual Design

by Richard E. Hanner & Ravneet Singh There are many critical activities and decisions that take place prior to and during the Safety...

Burner Management System Safety Integrity Level Selection

by Michael D. Scott, P.E., aeSolutions Founder This paper will discuss how quantitative methods can be utilized to select the appropriate...

Identifying Required Safety Instrumented Functions for HIGH-TECH & SEMICONDUCTOR MANUFACTURING

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

Implementing Safety Instrumented BMS: Challenges and Opportunities

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

Case Study of a Safety Instrumented Burner Management System (SI-BMS)

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

A Database Approach to the Safety Life Cycle

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

What is Truth? Do SIL Calculations Reflect Reality?

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