Commitment to Process Safety

The Cornerstone of process safety excellence. A workforce that is actively involved and an organization that fully supports process safety as a core value will tend to do the right things in the right ways at the right times-even when no one else is looking.

Fatal Exposure: Tragedy At DuPont

Apr 4, 2012
Marc G. Sáenz
This investigation by the United States Chemical Safety and Hazard Investigation Board (CSB) provides unique lessons in process safety. Three incidents occurred over a 33-hour period at the DuPont plant in Belle, WV. The most serious incident occurred on January 23, 2010, when a release of highly...

Proven in Use (What's the Quality of Your Data)

Apr 4, 2012
Harold W. Thomas
To perform LOPA's, fault tree analysis, SIL verifications and other quantitative likelihood analyses requires data. As much as everyone wants data, it always seems to be elusive or lacking in quality. This paper explores various issues that the authors have experienced when dealing with end user...

Design Challenges in Tankage Modernization

Apr 4, 2012
James Kong
In order to comply with regulation requirements, a refinery needs to perform major revamps to produce different grades of Diesel, namely ULSD, Off-road Grade and Regular Diesel. The existing tankage allocation needs to be changed to accommodate the hydrotreater feed components and the new products...

Explosions in Transformer and Circuit-Breaker Tanks Due to Arcing Events

Apr 4, 2012
Timothy L. Morse
Industrial transformers and circuit breakers operate with large voltage differences between current-carrying internal components and the grounded tank walls. A breakdown in the dielectric strength of the insulating oil in the tank due to contamination or other causes can lead to the formation of an...

Evaluation of Dispersion Models for LNG Siting Applications

Apr 4, 2012
Andrew Kohout
The federal safety standards for LNG facilities under 49 CFR Part 193 approves the use of specific dispersion models for performing vapor-gas dispersion exclusion zones. In addition, provisions allow for the use of alternative models if approved by PHMSA. In 2010, PHMSA, in consultation with FERC,...

Flash Fire From a Hot Combustible Liquid

Apr 4, 2012
Russell A. Ogle
A truck driver loading a tanker was fatally injured in a flash fire. The accident occurred at the loading rack of a petroleum refinery. The truck driver was on top of the tank trailer loading a liquid petroleum byproduct material similar to asphalt through an open hatch on the trailer. The material...

More LOPA Misapplied: Common Errors and How to Avoid Them

Apr 4, 2012
Karen Study
Layer of Protection Analysis (LOPA) continues to be more and more widely utilized in the Petrochemical and other industries. LOPA is a “simplified” tool, which is true relative to tools such as Quantitative Risk Assessment and Fault Tree Analysis. However, simplified does not mean simple on an...

Beware of the Black Swan

Apr 4, 2012
In 16 th century London, a statement that describes impossibility was referred to as a “black swan” because all historical records of swans up to that time had reported that swans only had white feathers. The Greek philosopher Aristotle first used the term “white swan” as an example of necessary...

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