Recent content by AliRiz

  1. A

    Are PLC SIL rated?

    Hi there, I am in a fix during one of the HAZOP LOPA study I was facilitating. Instrument Engineer proposed a PLC which he said is SIL rated. As per my understanding, PLC can't be SIL rated due to its high pfd. Please correct me if I am wrong and share your thoughts on this topic. Thank...