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Ask the Expert: Selecting the Right Safety Logic Solver for Hazardous Process Control Operations

May 9, 2024
Gain expert insight into key operational and resource restraints for logic solvers, sharing SIS data with other plants and mitigating cybersecurity risks.

Hazardous operations in industrial process plants can pose significant risks to plant personnel, physical assets, and the surrounding communities. The IEC 61511-3 family of international process safety standards was developed to help ensure process safety in hazardous plant areas. A comprehensive hazardous operations study enables process industry companies to assess the relative safety risks across their process operations and identify the appropriate required safety integrity levels (SIL).

While the standards do an excellent job of describing the levels of protection required, they don’t prescribe the specific safety instrumented system (SIS) technology to employ. This leaves it up to the end users to select and implement the appropriate technologies, including the critical logic solver for process safety. As the “brain” of an SIS, the logic solver inputs measurements from safety-rated transmitters, performs the necessary calculations, and then outputs appropriate instructions to safety-rated valves and other final control elements.

With today’s shortage of process safety expertise, many end users have expressed confusion about how to select the most cost-effective process safety logic solver(s) for their various safety-related applications. Download the asset below for expert advice from Gary Prentice at Moore Industries. Based on more than 40 years of experience in the process control industries, Gary answers questions related to:

  •        Recent market disruptions
  •     Key operational and resource restraints for logic solvers
  •     Sharing SIS data with other plant systems
  •     Mitigating related process control cybersecurity risks

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