Our Publications

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    1,3-butadiene monomer undergoes thermally initiated, reversible dimerization / trimerization reactions with essentially the same kinetics in both the gaseous and liquid phases.
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    Version 7.2 of the ASTM CHETAH computer program was issued in 1998. This version, the successor to Version 7.0, provides a convenient spread-sheet style means for estimating the standard heat of formation of chemical compounds by use of the Benson group additivity system.
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    HETAH incorporates very convenient means for using the Benson group contribution system to estimate, from chemical structure alone, thermochemical data such as heat capacity, ideal gas entropy, heat of formation, equilibrium constants and heats of combustion for a multitude of compounds.
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    It is mandatory to have fire water in an operational refinery or plant according to NFPA regulatory codes. Any plant emergency may not be adequately reacted to and overcome if there is no fire protection and fire water system. Facilities can prepare the appropriate amount of fire water by deciding on the worst-case scenario in case of a plant emergency.
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    This article proposes a risk-based method for domino effect characterization and potential escalation for process equipment affected by thermal radiation (i.e., fires).
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    On October 18, 2007, OSHA published a directive for inspection of workplaces that create or handle combustible dusts. On March 3, 2008, OSHA reissued this directive “to increase its enforcement activities and to focus on specific industry groups that have experienced either frequent combustible dust incidents or combustible dust incidents with catastrophic consequences.”
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    Reactive chemicals are materials capable of giving rise to an uncontrolled chemical reaction (a.k.a., a runaway reaction). Reactions with a significant release of heat, gas and/or toxic materials have the potential to cause harm to people, property or the environment.
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    Many industries — from chemicals, plastics, and pharmaceuticals to food processing and mineral recovery — face combustible dust hazards in their facilities.
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    This paper presents an advanced modeling approach which significantly improves predictions of reaction rates and critical data that engineers need to design effective pressure relief systems.
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    DIERS Users Group awarded Arthur D. Little, Inc. a contract to provide the next generation computer program for emergency relief system and effluent handling designs.
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    The OSHA Process Safety Management National Emphasis Program will soon apply to the chemical industry, targeting compliance with safety standards associated with chemical hazards. The U.S. Occupational Safety and Health Administration's (OSHA) process safety management (PSM) standard sets requirements for the management of hazards associated with processes that use highly hazardous chemicals (HHC) - e.g., chemicals that are toxic, reactive, flammable or explosive.
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    This poster illustrates how QRA results can provide valuable information for blast loading characterization at a given location of interest.
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    This poster focuses on illustrating a risk-based fire assessment in order to provide detailed results for domino effects/escalation analysis.
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    The potential for pressure relief valve instability (chattering) is a known hazard. Because of this, relief systems design basis documentation must demonstrate expected stable pressure relief valve (PRV) operation and performance for a multitude of credible scenarios.
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    After much anticipation, the new 2013 Edition of NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing and Handling of Combustible Particulate Solids, has finally been issued. This is one of the key standards utilized for safe handling of combustible solids.
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