The 3 layers of defence (3LOD) process, incorporating audit, barrier assurance and verification is a widely used concept to understand the health of process safety and integrity management systems. This talk will traverse a variety of concepts such as bow ties, Safety and Environment Critical Elements (SECE), barriers and protocols and operations and corporate risk management and try to show how they can be brought together to avoid serious safety related events and/or major property loss events

A check box conformance approach to meeting requirements in standards needs to be avoided because it creates a cottage industry and does not give the greatest value from limited resources.   t is proposed that the 3LoD approach helps to find holes in preventative and mitigative barriers.   Each of the different approaches contrasts in strengths and weaknesses, barrier assurance needs to undertaken by SMEs and can be focused on risks using a deep and narrow approach where as audit is typically broad and shallow and gives an overview.

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The webinar will be presented by:

Harry Moss DPhil (Oxford), CEng, FIMechE, MSaRS. Harry has experience of working with diverse internal and external stakeholders and in leading geographically dispersed workforces in oil and gas engineering roles and in Upstream, Midstream and Downstream Op. Cos. His main role has been to drive effectiveness and efficiency improvement in asset integrity management programs.  This has included verification, assurance and audit activities and root cause investigation and review.  Such activities have identified risk reduction opportunities to support Safe, Reliable & Compliant operations. Harry likes to think he has added value to organisations by facilitating sound process safety and integrity decision making.


Wednesday, 17th November 2021 at 1:00pm


Wednesday, 17th November 2021 at 2:15pm