Layer of Protection Analysis


An online self-paced learning path about how to use the Layer of Protection Analysis technique - everything a LoPA study participant or scribe should know.

Layer of protection analysis online course by eFunctionalSafety

LOPA online self-paced training

Process Safety - Layer of Protection Analysis

Processes should be designed as far as possible to be inherently safe. Inherent safety means removing or reducing hazardous inventory, or ensuring that the process design is so robust that the likelihood of a hazardous event is extremely low when compared to other risks.

Using example piping and instrumentation diagrams (P&ID), the course takes you through how the technique is applied in a real-world example. The course authors provide direct individual feedback on exercises that are set at key points in the learning exercises.

At the end of the course you should be ready to participate effectively in a LoPA study as a valued team member


  • Anyone involved with participating in LoPA studies
  • Operations and Maintenance personnel
  • Process engineers
  • Control & Instrumentation Professionals
  • Project engineers and managers
  • Safety system equipment suppliers
  • SHE/HSE and Process Safety Professionals

Learning objectives

  • Learn the latest process risk analysis technique for correctly identifying and crediting protection layers and determining Safety Integrity Level (SIL).
  • Outline different LoPA methods and their possible challenges.
  • Understand frequency and probability for LoPA studies.
  • Correctly identify initiating events from PHA/HAZOP records and P&ID’s.
  • Outline common conditional modifiers and their correct use.
  • Learn typical initiating events and their common frequencies of failure.
  • Source data for independent protection layers and typical probabilities of failure
  • Learn the many pitfalls of incorrectly applying the LoPA technique.

eFunctionalSafety interactive module

Narrated slide with closed captions

eFunctionalSafety interactive online quiz question

Interactive QUIZ question