Our Stories

A collection of our Blogs, Articles, and Whitepapers

Using the STAMP Systems-Based Approach to Identify Hazards for the Transient Operating State

STAMP (Systems Theoretic Accident Model and Processes) is a relatively new accident causality model based on systems theory. It draws its...

How Can I Effectively Place My Gas Detectors

Instrumentation, Reduction of Risk, Risk Assessment, Protection, Detection System, Alarms and Operator Interventions, Detector, Gas Detecti

Does Your Facility Have the Flu? Use Bayes Rule to Treat the Problem Instead of the Symptom

Is our industry addressing the problems facing it today? We idealize infinitesimally small event rates for highly catastrophic hazards,...

Designing Operator Tasks to Minimize the Impact of Heuristics and Biases

This paper proposes a combined approach of discussing the cognitive psychology behind System 1 and System 2 thinking, the types of heuristic

Improving Barrier Effectiveness using Human Factors Methods

by Dave Grattan The Process Industry has an established practice of identifying barriers to credit as IPLs (Independent protection...

Improving Human Factors Review in PHA and LOPA

Having a working knowledge of these five tools will improve a PHA‐LOPA facilitator’s awareness and ability to better evaluate human error re

Improving the Safety Instrumented System (SIS) Design Process with Graphic Diagrams

Examples of the different types of graphic diagrams, methods in which the diagrams were utilized, and the benefits that each provided in th

FGS1400 MKII - Evolution of the traditional Fire panel

To develop the Fire and Gas system requirements needed by industry, we first needed to understand the regulatory requirements, applicable in

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...

Methodologies in Reducing Systematic Failures of Wired IPLs

by Richard E. Hanner & Tab Vestal The history of high consequence incidents in industry reveals that most accidents were the result of...