Paul Baybutt

pha human failure process safety enabler hazard scenario initiating event process hazard analysis human error catastrophic accident accident consequence hazop hazard risk analysis equipment failure accident probability human factors risk line-by-line noding quality assurance design intent safeguard hazard and operability (hazop) study competency management catastrophic accident. super nodes safeguard validation quality control multiple failures major hazard human factors. safeguards risk tolerance external event hazard analysis quotes. hazard identification tolerable risk risk aversion