Lifecycle of the ESD valve – Install-and-forget device?[R]

Author: Ville Kähkönen Director Metso Flow Control

Company: Metso Flow Control

• A SIF protects against a single hazard, but a Safety Instrumented System (SIS) implements one of more SIFs
• SIS takes the process to a safe state in case of emergency
• SIS consist of three elements: sensor, logic solver, final element