For over 25 years, Dr. David Leggett has combined an extensive knowledge of chemistry with a diverse chemical process safety background and experience to provide hazard identification and risk reduction consulting services. Clients include the chemical, pharmaceutical, and petrochemical industries both nationally and internationally (for details see "Expertise"). He has participated in several industrial chemical releases, fires, and explosion investigations, and has provided expert opinion for these accidents. He has also given expert testimony in lawsuits involving accidents caused by chemical reactivity and process safety issues. Dr. Leggett specializes in process safety management matters related to OSHA regulatory compliance, and NFPA standards applicable to chemical handling and storage.
During his career in chemical safety and loss prevention, Dr. Leggett has performed over 200 risk reviews and analyses in The Americas, Europe, and Asia using all of the accepted and approved hazard evaluation techniques. Approximately two-thirds of these reviews have been directed toward chemical reactivity and its impact on the management of chemical process risk. These reviews and risk assessments have analyzed the hazards of all unit operations that are commonly encountered in pilot plant through full-scale continuous operations. His fifteen years of first-hand experience in university and industry R&D chemical labs provides clients with unique insights into risk mitigation for the R&D environment. He has written extensively on the issues of hazard identification and risk analysis for R&D, pilot, and plant scale chemical operations.
Dr. Leggett has conducted hazard identification and risk assessments on the majority of the chemical and pharmaceutical industries' operations:
- polymerizations using olefins, esters, carbonates, acrylates, latexes, and urethanes;
- inorganic chemicals including chlorine, caustic, cal hypo, hydrogen peroxide, magnesium, aluminum, and lithium;
- highly hazardous and reactive molecules such as alkylene oxides, isocyanates, azides, silane, organic peroxides, halocarbons, nitroalkanes and arenes, metal alkyls, triazoles and organo-carbonates;
- high hazard reactions including diazotizations, oxidations, metallations, nitrations, epoxidations, reductions, Grignard, Friedel Crafts, and cryogenic reactions;
- bulk storage and handling of reactive monomers and Class 3 and 4 oxidizers.
He has developed company-wide chemical hazard identification and evaluation programs for several corporations. These programs have focused on both risk identification and minimization activities including the necessary management structures and training.
During the last seven years, Dr. Leggett has developed and presented nationally a series of tools and techniques designed to simplify the tasks of risk analysis of reactive chemistries for use by the non-specialist practitioners. He has published over fifty technical papers in externally refereed journals, and has presented over sixty papers at local, national and international meetings. He is a member of the American Chemical Society; the Royal Society of Chemistry; the American Institute of Chemical Engineers; and the National Fire Protection Association.