HIPPS Justification - High Integrity Pressure Protection System
A HIPPS measures pressure (usually using redundant transmitters), utilizes a logic solver (many technologies and configurations are acceptable), and closes valves. While such designs are allowed per current codes, the justification of such a system requires careful analysis by a team of specialists. The justification and analysis must consider all operating and upset conditions that might cause an overpressure. Process dynamics must be analyzed to determine if the HIPPS can respond quickly enough to prevent the hazard.
Without an adequately sized conventional relief system, the HIPPS represents the last line of defense against an overpressure event. Subsequently, many end users require an independent, third party review of the justification of such a system.