We'll show you what ioMosaic can do to improve process safety in your organization.
A versatile tool for risk analysis, facility siting, PRFS evaluation and design, and more
Simplify the recording of findings and tracking of follow-up from PHAs
Browse training, attend courses, and get certified anytime and anywhere with our easy to use LMS
Boost your process safety with a 24/7 on-demand digital video streaming platform
Maximize your process safety management program with a PSM toolbox
Manage your critical process safety management data in one integrated platform
View the Newsletter
The Williams Geismar olefins plant explosion and fire on June 13, 2013, demonstrated the catastrophic consequences that can result from thermal liquid expansion. The catastrophic reboiler rupture, explosion, and fire killed two Williams employees.
Pressure relief is required for thermal expansion. This is especially important for liquids and liquid mixtures where initial conditions are saturated/subcooled and/or where the conditions due to expansion caused by heating can lead to a superheated liquid or liquid mixture with respect to ambient pressure. Read this newsletter by Georges Melhem, Ph.D., FAIChE, for a discussion on catastrophic vessel failure mechanisms and an analysis of the June 2013 Williams Geismar olefins plant explosion. Topics include:
BLEVE and BLCBE Olefins Plant Reboiler Rupture Analysis Upper Limits for Relief Device Set Pressure Recommendations for Prevention
Bonus!
This newsletter also includes access to the 16-minute presentation, PStv® Safety Moment - Thermal Expansion of Liquids, for important lessons learned from the fatal incident at the petrochemical facility in Geismar, LA.
Have a great and safe day.
Jun 2-3, 2025
Jun 2-5, 2025
June 10, 2025