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Accreditations | Dates/Locations | Instructor(s) | For More Information
2-Day Course
Layer of Protection Analysis (LOPA) is the newest methodology for hazard evaluation and risk assessment. On a sliding scale of sophistication and rigor, LOPA lies between the qualitative end of the scale (characterized by methods such as HAZOP and What-if) and the quantitative end (characterized by methods using Fault Trees and Event Trees). LOPA helps the analyst make consistent decisions on the adequacy of the existing or proposed layers of protection against an accident scenario. The decision making process is ideally suited for coupling with a company's risk-decision criteria, such as comparing to targets set by your company for controlling risk to "as low as reasonably practical (ALARP)."
In this course, you will learn how to apply LOPA. The course will fully cover all the topics in the CCPS concept book, Layer of Protection Analysis (2001). You will learn:
- Rules for how and when to use LOPA
- How to develop scenarios for either a new process or change to a process
- How to develop scenarios starting from a qualitative hazard evaluation (e.g., HAZOP)
- How to estimate the frequency category for the initiating event of a scenario
- How to determine the consequence category for the unmitigated scenario
- How to determine which protection layers meet the criteria for independence and uniqueness and for audits
- How to calculate the scenario risk
- How companies around the world are using LOPA to decide which scenarios pose the greatest risk and which scenarios have residual risk that is too high
The course is broken into three major sections:
Risk Judgment Fundamentals. A company should focus its resources on high-risk scenarios. We will explain how companies around the world are using risk acceptance criteria and risk judgment tools to decide which scenarios pose the greatest risk and to decide whether the current risk is unacceptable.
Risk Acceptance Criteria. You will learn how to help your company establish acceptable risk criteria. You will also learn how to explain these criteria in a risk matrix so they can be applied during (1) reviews of new designs, (2) management of change, (3) hazard reviews of existing systems, and (4) resolutions of recommendations.
Risk Judgment Techniques. To judge the residual risk of a scenario, you will learn qualitative, semiquantitative, and quantitative approaches for combining the (1) consequence of a scenario, (2) likelihood of an initiating event, and (3) effectiveness of the safeguards. Finally, you have concrete tools for judging when your layers of defense against an accident are acceptable versus when you need further safeguards.
LOPA can be used for any risk-based decision. And it is particularly useful for moving or strengthening control rooms and equipment because the risk of explosions otherwise cannot be reduced sufficiently and (2) deciding the integrity level necessary for safety interlocks. The course will present specific instruction for how to make these evaluations. Students will work several exercises to apply what they learn.
Accreditations
1.2 CEUs, 1.2 COCs, 2.0 CMs, ABIH approval #06-2834
Dates/Locations
No scheduled public offerings. Onsite offerings at your facility available. Please contact Karen Evans at 865-671-5823.
Instructor(s)
Tom Williams, Don Lorenzo, Henrique Paula
For More Information:
Darryl Brown
Manager - Meeting Planning, ABS Consulting
1-281-673-2921 | dbrown@absconsulting.com
Steve Arendt
1-865-671-5812 | sarendt@absconsulting.com
Henrique Paula (Latin America)
Vice President, Risk Consulting International Operations
1-281-673-2750 | hpaula@absconsulting.com |
