Advanced Course on Gas Explosion Hazards

Instructor : Dr. Madhat Abdel-jawad and Dr Mel Suraweera – GexCon AS
Upcoming session : Bandung, 18-20 September 2013

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Course Introduction:
Gas explosion is defined as a process where combustion of a premixed gas cloud, i.e. fuel-air or fuel/oxidizer is causing rapid increase of pressure. Gas explosions can occur inside process equipment or pipes, in buildings or off-shore modules, in open process areas or in unconfined areas. We put tremendous effort to mitigate the gas explosion to happen, from the initial project development, engineering phase till start-up and normal operation.
In this course, we will go through from the basic principle of gas explosion, risk analysis, release and dispersion, until the mitigation control and the explosion modeling. Buncefield accident and Rough 47/3B explosion will be discussed to represent both offshore and onshore explosion hazard. On the last day, there is a case study discussion on modeling consequences in an LNG plant.
This Advance Course on Gas Explosion Hazard is dedicated for you, who work for operating oil and gas companies or engineering firms or risk assessment companies as well as government/regulatory body to have in-depth understanding on gas explosion. The instructors – Dr. Madhat Abdel-jawad and Dr Mel Suraweera – are recognized as expert in the area of gas explosion. They are from GexCon AS – the world leading company in blast prediction and accident investigations which has carried out several high profile accidents including for Buncefield and Piper Alpha.

Course Content:

  • Gas Explosion Basics : Combustion mechanisms, Fuel reactivity, Positive feedback mechanism, Effect of geometrical aspects, Explosion tests
  • Risk Analyses : An introduction. What is risk? QRA, Acceptance criteria, Risk perception, Consequence and probability data.
  • Explosion Accidents: Statistics and Examples. Overview and analysis of explosion incidents offshore
  • Explosion Investigation of Rough 47/3B Platform : DVD “Incredible – What really happened”
  • Release and Dispersion in Offshore Facilities : Potential leak sources, Process streams, High and low momentum releases, Phase transition, Ventilation, Congestion and confinement, Modelling examples, Statistics
  • Ignition Sources : Mechanical ignition sources, Static electricity, Electrical ignition sources, Statistics
  • Preventive Measures : Hazardous area classification, Ventilation, Choice of equipment, Maintenance and procedures, Inventory, ESD
  • Mitigation and Control : Layout, Use of explosion venting devices, Effect of water spray, Escalation: Loading on equipment and piping, Passive fire protection
  • The Buncefield Accident : What really happened? How unexpected congestion caused a large escalation in overpressures and a potential detonation.
  • Special Topic : Modelling of Safety Gaps onshore installations. Example of safety gap modelling in an LNG plant.
  • Explosion Modelling : Explosion modelling, Why simple models do not work, CFD, FLACS
  • Explosion Analyses Part 1: Objective and Motivation. Risk acceptance criteria, What to protect
  • Explosion Analyses Part 2: Explosion Risk Analyses – Simple Approach. Worst case, Case study, Advantages /Disadvantages
  • Explosion Analyses Part 3: Explosion Risk Analyses – Advanced Approach. Probabilistic Analysis, Advantages/disadvantages
  • Explosion Analyses Part 4: Selected Analyses Examples. Factors affecting overpressures and impulses. Congestion/Confinement. Layout optimization, Screening analyses for concept choice, Gas detection system optimization.
  • Structural Response : Static pressure versus dynamic pressure loads, SDOF versus FEM
  • Case Study Presentation : Modelling Consequences in an LNG PLANT

Who Should Attend:
The course is dedicated for those whose works related to operate and design oil and gas processing facility both onshore and onshore as well as risk assessment companies and government regulatory bodies which includes but not limited to:

  • Operation managers
  • HSE managers
  • Process/Facility engineers
  • Operation supervisors / superintendent
  • HSE personnel
  • Safety Engineers
  • Operating and craft personnel
  • Government officials
  • Insurance/risk assessor