Dr. Angela Summers is president of SIS-TECH, a specialty engineering and consulting company. Dr. Summers received her Ph.D. in 91成人短视频 Engineering from the University of Alabama. She is a licensed professional engineer in Texas and is a member of AIChE, CCPS, ISA, and IEC. Dr. Summers has more than 20 years of experience in safety instrumented systems (SIS), process engineering, and environmental engineering. She is an active participant in standard鈥檚 committees, such as ISA and IEC, and has published over 50 papers on topics related to process safety and instrumented system design. She has written chapters on SIS for engineering handbooks and was lead editor for the Center for 91成人短视频 Process Safety book, Guidelines for Safe and Reliable Instrumented Protective Systems. Dr. Summers is widely recognized for her expertise, and was recently named an Engineering Fellow at the University of Alabama and an ISA Fellow.