A Methodology for Choosing an Emergency Shutdown System

Emergency Shutdown (ESD) systems are essential parts of each industrial plant. In this paper, essential concepts of ESD systems are reviewed. In addition, more important aspects of an ESD system are surveyed and for instance, Siemens SIMATIC PCS7 failsafe and HIMA HIQuad solutions are reviewed and checked. By using the methodology which is presented here, any automation engineer can find a good solution for ESD system of a plant based on its specification and available solutions