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Course Description

Layers of Protection Analysis (LOPA) is used with the results of process hazard analysis (PHA) studies to help resolve PHA recommendations and comply with international standards on Safety Instrumented Systems (SISs) such as IEC 61511 and ISA 84. LOPAWorks is a software tool used to document LOPA studies and perform risk evaluations and summations.

The course covers creating new studies, entering information into LOPA worksheets, use of special software features, navigating through projects, and generating reports.

This course will benefit those who have a basic familiarity with LOPAWorks, or those who are using LOPAWorks for the first time.


To learn how to use LOPAWorks most effectively.

Target Audience

Individuals responsible for using LOPAWorks to perform LOPA studies. These individuals may include the Team Leader, Scribe, or other people involved in completing LOPA studies..


Attendees should have a basic understanding of Windows-based software applications. Prior knowledge of LOPA is desirable. Students should come to the course with LOPAWorks installed on a personal computer (a limited number of computers are available for rental from Primatech).

Course Contents

  • Creating LOPA projects
  • Entering study information
  • Using risk tolerance criteria
  • Entering scenario information
  • Using failure data
  • Calculating scenario risk
  • Evaluating scenario risk
  • Using risk summations
  • Identifying dominant contributors to risk
  • Using LOPAWorks® to comply with SIS standards
  • Importing scenarios from PHAWorks 5
  • Navigating worksheets
  • Generating reports
  • Customizing reports
  • Software functions including pick-from lists, Quick Entry lists, formatting, undo/redo, etc.
  • Creating and using project templates
  • Customizing the software user interface

Duration / CEUs

  • One day
  • 0.7 CEUs or 7 PDHs awarded


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