On-line Training Session for Chemical Hazard Engineering Fundamentals (CHEF) for use with Risk Analysis Screening Tools (RAST) | AIChE

The 10-session series of 2-hour webinars via the Zoom Platform will be held by the Center for Chemical Process Safety (CCPS) after the Global Congress on Process Safety (GCPS) on April 18 – April 23, 2021. 

Our apologies, registration has closed.

  • Session 1: April 27, 2021 (Tuesday)
  • SESSIONS 2-10: May 5 to June 30, 2021 (Wednesdays)

The series follows the steps in performing a Hazard Identification and Risk Analysis (HIRA) study with an emphasis on the use of simplified quantitative techniques. These simplified quantitative methods will help evaluation teams make better informed Process Safety decisions, prioritize their risk reduction efforts, and improve the analysis consistency between different teams.

Each 2-hour session will consist of two topics (two 40-45 minute presentations) with time for questions. Worked example problems will be shared in addition to references providing additional topic information. Participants will also receive one Professional Development Hour (PDH) per session hour attended. 

Registration Categories:

Note: CCPS and EPSC participants must register using Company email

CCPS Member Company Employees  Free
EPSC Members Company Employees Free
Non-Members   $300 

Session Schedule and Topics

Session 1 - What are the Hazards? (The only session to be held on Tuesday)

April 27th, 9:00 AM - 11:00 AM Eastern Standard Time

  • Flammability
  • Toxicity

Session 2 - What are the Hazards? (continued) (The first of the next nine Sessions to be held on Wednesdays)

May 5th, 9:00 AM - 11:00 AM Eastern Standard Time

  • Reactivity
  • Other Hazards

Session 3 - What can go Wrong?

May 12th,  9:00 AM - 11:00 AM Eastern Standard Time

  • Inherently Safer Design
  • Overview of Hazard Evaluation Techniques

Session 4 - What can go Wrong? (continued)    

May 19th, 9:00 AM - 11:00 AM Eastern Standard Time

  • HAZOP
  • Development of Incident Scenarios

Session 5 - How Bad Could It be? (or Consequence Analysis)

May 26th, 9:00 AM - 11:00 AM Eastern Standard Time

  • Source Models
  • Vapor Dispersions

Session 6 - How Bad Could It Be? (continued)

June 2nd, 9:00 AM - 11:00 AM Eastern Standard Time

  • Explosions
  • Impact Assessment

Session 7:  How Often Might It happen?

June 9th, 9:00 AM - 11:00 AM Eastern Standard Time

  • Frequency Evaluation
  • Overview of Risk Analysis

Session 8 - Is the Risk Tolerable? 

June 16th, 9:00 AM - 11:00 AM Eastern Standard Time

  • Scenarios, Enabling Conditions, and Conditional Modifiers
  • Procedures and Human Performance

Session 9 - Is the Risk Tolerable?  (continued)

June 23rd, 9:00 AM - 11:00 AM Eastern Standard Time

  • Preventive Safeguards/Protection Layers
  • Mitigating Safeguards/Protection Layers

Session 10 - Case Studies  

June 30th, 9:00AM - 11:00AM Eastern Standard Time

Participants of this training are encouraged to download our CHEF Guide (this guide is available for active participants of the CHEF sessions).

CHEF Guide

For more information, please contact Dr. Bruce K. Vaughen (brucv@aiche.org) or Mr. Ken First (kefirst@aol.com).