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Polymerization Modeling for Relief Systems Design

This 1,3-Buatadiene Polymerization Case Study was presented to the DIERS User Group on April 28-30, 2003 in Philadelphia, PA. Some conclusions that can be drawn from this presentation include: Free radical polymerization models should be run in parallel with thermally initiated polymerization models, It is possible for a free radical/anion initiated polymerization to “jump-start” thermally initiated polymerizations if sufficient initiator is present, and polymerization models are simple and can easily be applied in SuperChems™ for DIERS or other simulation computer codes for performing relief design for reactive systems and process optimization as well. Read more

Preventing Hidden Risks in BESS Using PHA Techniques

OSHA’s high hazard chemicals aren't the only chemicals that can cause a process safety incident. In April 2019, a fire and explosion of a Battery Energy Storage System (BESS) at an Arizona electrical substation injured eight firefighters and threw one person over 70 feet. Read more

Reactive Storage Vessels Presentation

How to Determine if your Insulation is Going to Work Read more

Reactivity Screening Made Easy

This presentation provides guidance on a systematic chemical hazards evaluation work process that improves chemical reactions hazards prediction methods. Read more

Sizing Relief Systems for High Viscosity Two-Phase Flow

High viscosity two-phase (HVTP) flow occurs in many industrial scale reactors, particularly when runaway reactions (e.g. during polymerizations) are vented through an emergency relief system. The design of a relief system for two-phase discharge can be complicated, as it involves a fluid with a liquid-like density and a gas-like compressibility. Read more

Systematic Evaluation of Chemical Reaction Hazards

Effective thermal hazard evaluation requires an integrated approach to assessment of chemical reactivity. A variety of theoretical and experimental methods can be used to determine the thermal stability of specific compounds or reactive systems. Notwithstanding this, recurrent problems occur with materials and/or reactions which are known to be inherently unstable. Correct application of physical tests and interpretation of output data is essential for effective thermal hazard evaluation. Read more