Our Stories

A collection of our Blogs, Articles, and Whitepapers

The Purpose of Performing a PHA - 2 Minute Topic

The ISA/IEC 61511 Safety Life Cycle starts with a Process Hazard Analysis (PHA) and a Risk Assessment. What is a PHA? Why do we do it?...

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...

SIL ratings and certification for fire & gas system hardware | Is industry barking up the wrong tree?

There are many devices (sensors, logic solvers and final elements) used in safety instrumented systems that are independently certified...

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...

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