Introduction to Layer of Protection Analysis (LOPA)


Layer of protection analysis (LOPA) is a semi-quantitative tool for analysing and assessing risk on a process plant. It uses an order of magnitude technique to evaluate the adequacy of existing or proposed layers of protection against known hazards.

Course Objective

Upon completion of the course participants will be able to:

  • Explain the LOPA concept
  • Explain the IPL Terminology
  • Determine Consequence and Tolerable frequency
  • Identify Initiating events and frequency
  • Participate in a LOPA Study
  • Demonstrate the LOPA Method to find residual risk and provide recommendations

Course Content

  • Introduction, Objective, Outcomes and Criteria
  • Hazard and Risk Definition
  • Introduction to Process Safety
  • Introduction to Safety Management and Legal Requirements
  • Risk Tolerance
  • Hazard Identification Methods
  • Introduction to IEC 61508
  • Preparation for LOPA Sessions
  • Overview of LOPA method
  • Introduction to IPL's
  • Scenario Definition
  • Identifying Consequence and Tolerable Frequency
  • Initiating Factors
  • PFD values
  • IPL Identification and IPL Credits
  • Performing Risk Calculations and Risk Assessments
  • LOPA and HAZOP

Course Details

Target Audience Senior Management, Departmental Managers, Engineers, Executives, HSE Officers, and Members of the Occupational Safety & Health Committee
Course Duration 2 Days
Course Delivery English & Bahasa Malaysia.
Lecture, Case Study, Video Presentation and Group Assignments


Dynamic Environ Sdn. Bhd. also known as DESB is one of the pioneers in Malaysia for waste management, shipping and lay up services, and fuel supply services. Our routine complies with accordance...

Read more


Prima Klang Avenue,
B 1-8, Block B, Jalan Kota KS 1,
41000 Klang, Selangor Darul Ehsan


  • Phone: +603 - 3382 1005 / 2005
  • Fax: +603 - 3382 0005