exida Recorded Webinars

Introduction to LOPA: Layer of Protection Analysis

Recording Date: April 2014

This webinar covers an overview of the key facets of performing layer of protection analysis (LOPA). It provides an understanding of the terminology, explains the transition from HAZOP to LOPA and lays the foundation for the basic probability math used by the methodology. Topics such as corporate risk criteria, human error, and common mode failure are addressed as they relate to LOPA.

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About the Presenter:

Hal Thomas, CFSE

Hal Thomas Hal Thomas is widely recognized as an expert in functional process safety analysis, including safety instrumented systems and high availability automation systems. He helped pioneer the use of HAZOP, fault tree analysis, consequence analysis, LOPA, and introduction of the SIS work process while at Air Products. He was formerly an Engineering Associate – Process Safety and Technology Manager for Safety Instrumented Systems at Air Products and Chemicals, Inc. His principle work responsibilities included assisting and mentoring process safety and process control engineers in hazard identification, the use of fault tree analysis, LOPA, SIL assessment, SIL verification, leading new technology hazard reviews, as well as to write standards and procedures to promote high quality and consistent results. He is a member of the CFSE Governing Board and is a senior member of ISA. He has authored numerous published papers.