Defining Risks

Date: May 26, 2022 12:00 pm (ET)


  • Marcello Oliverio
    Olitech Consulting Inc.

The seminar will discuss the following topics, but will focus on process safety – i.e., acute events with acute effects involving hazardous chemicals 

  • Risk: what is risk; how is it related to safety; what do we mean by process safety; how do we measure risk; why do we consider risk? 
  • How do we analyze and evaluate risk – “the risk assessment”.  This will consider the different types of risk assessments including PHA and QRA, including how they differ, how they are or can be related, and the pros and cons of each method 
  • Special emphasis will be provided on risk evaluation (tolerance) criteria, including risk matrices, individual risk and societal risk
  • Risk management – the risk management framework in CSA Z767 will be described and how it should be used to manage process safety. 


Marcello Oliverio, P.Eng.
Senior Consultant and President, Olitech Consulting Inc. 

Marcello Oliverio is a nationally recognized subject matter expert in process safety, risk assessment, and risk management related to hazardous chemicals, with over 35 years experience.  He has worked in numerous roles, including consulting and with operating companies, and in different industries, including oil & gas, nuclear, chemical and utilities. This experience includes leading edge knowledge of the tools, methods, science, and key issues associated with risk assessment, risk management and process safety management.    

Marcello is a past recipient of the national Canadian Society for Chemical Engineering Process Safety Management award (2019).  He is currently a member of the CSChE PSM Division and was a past chair (2013-15).  He is a member of several CSA technical committees, including CSA Z767 (Process Safety Management).  In addition, he teaches / has taught the following courses at the University of Toronto (Chemical Engineering): Risk assessment for Chemical Process Safety and Risk Based PSM (2015-2019).