Monday April 6, 2015 at 8:00 AM AKDT
Thursday April 9, 2015 at 4:00 PM AKDT

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JL Towers 
3800 Centerpoint Dr.
Anchorage, AK 99503

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Stevi Lebhart 
907-865-5992 x 4202 

aeSolutions and ISA are pleased to offer:

Safety Instrumented Systems: 
Design, Analysis & Justification (EC50)

Length: 4 days

CEU Credits: 2.8
Course Hours: 8:00 a.m. - 4:00 p.m.
Course: $2505

This course is required for the ISA84 SIS Fundamentals Specialist Certificate Program 


This course focuses on the engineering requirements for the specification, design, analysis, and justification of safety instrumented systems for the process industries. Students will learn how to determine safety integrity levels and evaluate whether proposed or existing systems meet the performance and documentation requirements defined in the ISA 84 (IEC61511) standard.

This course is required for the ISA84 Safety Instrumented Systems Certificate ProgramsYou can register for the exam through ISA after completing the course.

Those who successfully complete this course and pass the exam receive the designation of ISA84 SIS Fundamentals Specialist.

You will be able to:

  • Differentiate between process control and safety control
  • Implement the ISA84 (IEC 61511) standard
  • Evaluate process risk levels
  • Select Safety Integrity Levels (SILs) for Safety Instrumented Functions (SIFs) using a variety of techniques
  • Analyze the performance of different logic system technologies
  • Analyze the performance of various sensor, logic, and final element configurations, as well as the impact of diagnostics, test intervals, common cause, system size, imperfect manual testing, and bypassing
  • Determine optimum system test intervals
  • Specify and select safety instrumented systems
  • Apply the documentation requirements for process safety management, regulations, and industry standards

You will cover:

  • Introduction: Accidents and Resulting Regulations | Lessons Learned From Past Accidents | Standards & Guidelines of Interest
  • Scope & Safety Life Cycle: Management Issues | Design Life Cycle |
  • Safety Layers: Independent Safety Layers | Separation of Control and Safety
  • Risk, Hazard Analysis, Safety Integrity Levels: Hazard Identification | Risk Assessment | Selecting Safety Integrity Levels | Layer of Protection Analysis
  • Failure Modes & Reliability Concepts: Safe vs. Dangerous | Failure Mode vs. Technology | Failure Rates | Modeling Techniques | Test Intervals | Fault Tolerance Requirements
  • System Technologies: Pneumatic | Relay | Microprocessor | Field Devices | Certification | Prior Use
  • System Design: Requirements Specification | General Design Issues (Environment, Interfaces, Bypasses, Resets, etc.)
  • Operations and Maintenance: Installation | Operation & Maintenance | Testing | Management of Change | Decommissioning

Classroom/Laboratory Exercises:

  • Calculate device failure rates
  • Model system performance for relay and software-based logic systems
  • Model the impact of different configurations, field devices, automatic diagnostics, manual test intervals, common cause, and imperfect manual testing and bypassing
  • Determine the SIL (safety integrity level) of a sample functions and design a system to meet the performance requirements

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

Recommended Resources:  Safety Instrumented Systems-Design, Analysis and Justification, 2nd Edition

Includes ISA Standards:

  • ANSI/ISA-84.91.01-2012: Identification and Mechanical Integrity of Safety Controls, Alarms, and Interlocks in the Process Industry
  • ANSI/ISA-84.00.01-2004, Part 1: Framework, Definitions, System Hardware and Software Requirements
  • ANSI/ISA-84.00.01-2004, Part 2: Functional Safety: Safety Instrumented Systems for the Process Industry Sector
  • ANSI/ISA-84.00.01-2004, Part 3: Guidance for the Determination of the Required Safety Integrity Levels - Informative