Archives For FHA

Just finished updating the Functional Hazard Analysis course notes (to V1.2) to expand and clarify the section on complex interaction style functional failures. To my mind complex interactions are where accidents actually occur and where the guidance provided by various standards, see SAMS or ARP 4754, is also the weakest.

One of my somewhat perennial concerns when reviewing a functional hazard analysis (FHA) is what’s termed the completeness question. In this case whether all the potentially hazardous functional failure modes have been considered, and to what degree? Continue Reading…