Process Safety and Design. CHEN 4470 – Process Design Practice Dr. Mario Richard Eden Department of Chemical Engineering Auburn University Lecture No. 18 – Process Risk Assessment & Inherently Safe Process Design March 19, 2013
CHEN 4470 – Process Design Practice
Dr. Mario Richard EdenDepartment of Chemical EngineeringAuburn University
Lecture No. 18 – Process Risk Assessment & Inherently Safe Process Design
March 19, 2013
Material Developed by Dr. Jeffrey R. Seay, University of Kentucky - Paducah
T2 Laboratories Inc – Jacksonville, FL
December 19, 2007
4 Killed and 13 Wounded in reactor explosion in manufacture of gasoline additive.
BP America Refinery – Texas City, TX
March 23, 2005
15 Killed and 180 Wounded in isomerization unit explosion and fire.
West Pharmaceutical Services – Kinston, NC
January 29, 2003
6 Killed and Dozens Wounded in dust cloud explosion and fire from release of fine plastic powder.
Source: U.S. Chemical Safety Board, www.chemsafety.gov
1st Layer of
2nd Layer of
3rd Layer of
Layer of Protection Analysis
Each layer must be: Independent; Effective; Reliable; Auditable.
Continuous reactor vs. batch reactor
Change of feedstock
Limitation of effects
Minimization of storage volume
Gravity flow vs. pumping