Safety Instrumented Systems (SIS)

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For assistance, please contact:
Steve Papp 281.295.8843


Safety Instrumented Systems  Download PDF

WHY WILSON MOHR

Wilson Mohr has been providing safety systems since we opened our burner management systems integration facility in the 1970’s. We have provided thousands of safety systems, including burner management, process safety and fire and gas systems for customers around the world. Since the adoption of IEC 61511 and ISA 84.00.01 we have provided Safety Instrumented Systems for these same applications. Our functional safety specialists can work with your staff to develop the detailed design including SIL verification, through commissioning and safety validation.

STANDARDS GUIDING SIS IMPLEMENTATION

  • ISA-84.00.01 - Functional Safety: SIS' for the Process Industry Sector
  • IEC 61511 - Functional Safety: SIS’ for the Process Industry Sector

WILSON MOHR SIS EXECUTION ZONE

  • Perform SIS conceptual design & verify it meets the SRS
  • Perform SIS detailed design
  • SIS installation, commissioning & startup acceptance test

WILSON MOHR IS A SYSTEMS INTEGRATOR WITH EXPERIENCE IN SAFETY SYSTEMS

  • Our experience includes performing conceptual SIF designs
  • Selecting technology (sensor, logic solver, final element)
  • Manufacturers Failure Data
  • Failure Rate Database
  • Documents requirements to meet SIL level
  • Selecting architecture (redundancy 1oo1, 2oo4, etc.)
  • Determine test philosophy
  • Reliability safety evaluation
  • SIF detailed design includes:
  • Loop diagrams
  • PLC programming
  • Wiring diagrams
  • Installation requirements
  • Logic diagrams
  • Commissioning requirements
  • Panel layout
  • After SIS fabrication services include
  • FAT
  • Installation, commissioning and acceptance testing
  • Validation through Safety Review