Sam MannanM. Sam Mannan+, PhD, PE, CSP, was a chemical engineering professor and director of the Mary Kay O'Connor Process Safety Center at Texas A&M University. He was an internationally recognized expert on process safety and risk assessment. His research inerests included hazard assessment and risk analysis, flammable and toxic gas cloud dispersion modeling, inherently safer design, reactive chemicals and run¬away reactions, aerosols, and abnormal situation management. Read More Read Less