Advanced Safety Integrity Level (SIL) Selection (EC52) 

Advanced Safety Integrity Level (SIL) Selection (EC52) builds upon the foundation set in ISA's Safety Instrumented Systems: A Lifecycle Approach (EC50) and explores examples of SIL selections through different techniques and determinations of risk reduction requirements. Students will be better able to save their companies time and money by knowing how to optimize system performance requirements.

ISA Process safety selection specialist badge
This course is part of the ISA/IEC 61511 Safety Instrumented Systems Certificate Program. Course registration includes one exam fee. Pass the exam and earn the ISA/IEC 61511 SIS Selection Specialist Certificate designation. 

Required Prerequisite

Successful completion of ISA Safety Instrumented Systems: A Lifecycle Approach (EC50) and a passing grade for the ISA Certificate Safety Instrumented Systems Certificate exam are required prerequisites for EC52.

Who should attend EC52?

  • Control systems engineers and managers
  • System integrators
  • Plant managers
  • Plant safety and risk management personnel

View Offerings by Format

Classroom (EC52)

Length: 2 days 
CEU Credits: 1.4

View EC52 Offerings

Virtual Classroom (EC52V)

Length: 2 days 
CEU Credits: 1.4

View EC52V Offerings

Learning Objectives

  • Design and implement different SIL selection techniques
  • Review the risk matrix, risk graph
  • Explore the LOPA
  • Determine the appropriate level of performance needed for your safety systems
  • Examine the consequences of over- or under-designing the system requirements

Topics Covered

  • Prevention of system requirements over- or under-design
  • Determination of the appropriate level of performance needed for your safety systems
  • SIL selection hands-on examples
  • 3-Dimensional risk matrix
    • Risk graph
    • LOPA
    • Modified (implicit) LOPA


  • The course consists of multiple application exercises of safety integrity level selection
  • Students are encouraged to bring their own examples to cover in class

Resources Included


  • ISA/IEC 61511 series of standards will be provided for use during the course


A hand-held, scientific calculator should be brought to class.

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