Elliott Group’s Pneumatic Trip System has received IEC 61508 SIL 3 Capable safety certification. IEC 61508 SIL 3 is an international standard for functional safety. It requires a detailed review and analysis of the design process. The objective is to design in high quality from the start.
Available with or without partial stroke actuation, Elliott’s Pneumatic Trip System provides a vital safety function for steam turbines. In response to an overspeed event, it shuts the turbine down to prevent damage or catastrophic failure. Partial stroke functionality gives operators a way to exercise the pneumatic trip valve without interfering with the turbine’s operation or the system’s ability to trip the turbine if an overspeed event occurs. (See August 2016 Gas Compression Magazine, p. 35.)