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Technical Presentations

On the Potential of Mitigating Vapour Cloud Explosions Using Flame Inhibitors

Mar 13, 2011
Kees Van Wingerden
Very few measures are taken to mitigate the possible consequences of vapour cloud explosions. The main attention is given to prediction of the consequences, which is used to consider strengthening structurally or re-locate occupied buildings such as control rooms. However little is undertaken to...

Preparing for the Chemical NEP

Mar 23, 2010
Mark S. Dreux
On July 27, 2009, OSHA issued a National Emphasis Program for the chemical industry (“the Chemical NEP”). Pursuant to the Chemical NEP, OSHA will conduct PSM inspections of numerous chemical facilities. This presentation will review lessons learned from OSHA's Refining NEP, particularly the OSHA...

Modification of Risk Using Barrier Methodology

Mar 23, 2010
Robin Pitblado
Risk assessments use frequency data mostly from generic sources, typically from the North Sea offshore environment or from process facility records mainly from Europe. As QRA's are being applied increasingly in North America and in the developing world, novel techniques are necessary to establish...

Complying with OSHA's RNEP, CNEP, and VPP RAGAGEP

Mar 23, 2010
Chad Patschke
The OSHA Refinery National Emphasis Program (NEP) and OSHA Voluntary Protection Program (VPP) PSM Supplement ask specific questions relative to many recognized and generally accepted good engineering practices (RAGAGEP). Many of the same RAGAGEP can be expected in the planned OSHA Chemicals NEP as...

Elements of Human Factors Missing from Process Safety

Mar 23, 2010
Revonda Tew
Process safety is about controlling risk of failures and errors; controlling risk is primarily about reducing the risk of human error. All elements of Risk-Based Process Safety (RBPS) and alternative standards for process safety (such as US OSHA's standard for Process Safety Management [PSM] or ACC...

An Integrated Toolkit for Addressing Human Factors Issues in Process Safety

Mar 23, 2010
David Embrey
This paper describes an integrated toolset, called the Human Factors Workbench, which addresses the proactive and reactive control of human error in process operations. It is a practical application of the tools described in the CCPS publication: ‘Guidelines for Preventing Human Error in Process...

Gas Piping and Equipment Commissioning Risks "10 Key Things Everyone Should Know"

Mar 23, 2010
John R. Puskar
There have been a number of devastating incidents related to natural gas piping system and the start-up and commissioning of equipment. It's very rarely that an incident occurs when equipment is at the ready and in some normal operating routine. The vast majority of incidents are directly related...

Investigation of an Explosion in a Gasoline Purification Plant

Mar 23, 2010
Kees Van Wingerden
On May 24, 2007 an explosion and subsequent fire destroyed a tank farm located at a gasoline purification plant in Sløvåg, Norway. In addition to the tank farm, an office building and some neighboring tank trucks were destroyed. There were no casualties in the accident, but at least two people...

A Framework for Human Error Analysis of Emergency Situations

Mar 23, 2010
Travis JB Deacon
Human factors play an important role in the escape, evacuation and rescue process. Human factors analysis is rooted in the concept that the frequency and consequences of human errors are related to work environment, work culture and procedures. This can be accounted for in the design of equipment,...

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