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Locations Dates Duration Tuition
Online (1:00pm EDT) July 29-August 2, 2024 5 half days $1,795
Houston, TX October 15-17, 2024 3 days $2,225

Course Description

ANSI/ISA S84.00.01-2004 / IEC 61511, Functional Safety: Safety Instrumented Systems for the Process Industry Sector requires that claimed Safety Integrity Levels (SILs) be verified by calculation. Calculation modeling methods are chosen based on the circumstances and include simplified equations, fault tree analysis and Markov modeling.

Factors that should be included in the modeling include:

  • Architecture
  • Technology
  • Field device configuration
  • Susceptibility to common cause failures
  • Component failure rates
  • Level of redundancy and voting
  • Proof tests and intervals
  • Diagnostics including reliability, test intervals and coverage
  • Repair times
  • Susceptibility to external influences

A detailed manual is provided for use as a reference after you have completed the course. Workshops are used to practice using the methods taught.

Target Audience

Process safety personnel, instrumentation engineers, reliability engineers and others who need to perform or understand SIL verification calculations.


A degree in engineering or another technical discipline is required. Familiarity with control systems and experience in process safety is helpful.

Course Contents

  • Terms and concepts
  • Requirements for SIL verification
  • Reliability metrics
  • SIL determination
  • SIS components and their failures
  • Diagnostics
  • Common cause failures
  • Systematic failures
  • SIS architectures
  • Test interval
  • Failure rates
  • Simplified equations
  • Sources and use of failure rate data
  • Failure modes, effects and diagnostic analysis
  • Fault tree analysis
  • Markov modeling
  • Uncertainty, sensitivity and correlation analysis
  • SIL verification

Duration / Credits

  • Three days
  • 2.1 CEUs or 21 PDHs awarded (2.8 CEUs awarded for 4 day international courses)


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