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Consequence of Failure (COF)

Overview of Consequence of Failure (COF)

Consequence of Failure (COF) is one part of the equation to determine risk as part of Risk Based Inspection (RBI) methodology. The COF, calculated together with the Probability of Failure (POF), helps establish the risk level for particular piece of equipment and set inspection intervals based on the calculated risk.

COF is calculated by reviewing and ranking the potential consequences for the equipment, personnel, environment, etc. in the event of equipment failure. More details on COF are given in API RP 580 - Risk Based Inspection (RBI), which contains directions on developing, implementing and maintaining an effective RBI program.

 

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Probability of Failure (POF)
Articles about Consequence of Failure (COF)
  • July/August 2017 Inspectioneering Journal
    By Greg Alvarado at Inspectioneering Journal

    Establishing risk targets is an important aspect of any risk-based inspection (RBI) program and is a requirement of API RP 580. Metrics and consistency are important considerations for those using RBI to measure and manage risks as part of their decision-making process.

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    Steam systems account for almost a third of the energy used in industrial applications for product output. Maintaining their integrity and efficiency is vital. Learn how an effective risk-management process aids in the optimization of these critical assets.

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    June 3, 2013 By Greg Alvarado at Inspectioneering Journal

    This is the third of four blogs in a series about Risk Based Inspection (RBI). You can read the previous blogs on a history and reasons for RBI and on starting to define risk. This post deals with the second half of the equation used to define risk...

  • Blog
    May 28, 2013 By Greg Alvarado at Inspectioneering Journal

    This is the second of four blog posts on Risk Based Inspection, or RBI. The first post covered a brief history and started the discussion on why you would want to use RBI. The next step is defining risk. 

  • Blog
    April 29, 2013 By Greg Alvarado at Inspectioneering Journal

    This is my second of three posts on Key Performance Indicators (KPIs) based on requests and discussions on the issue.  In part 1 of this series I provided a brief overview of KPIs and their ability to predict good, poor, and sometimes dangerous performance in our quests to achieve certain objectives and goals.

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  • September/October 2007 Inspectioneering Journal
    By Greg Alvarado at Inspectioneering Journal

    In my travels around the world as one of the primary API RBI 580/581 training course instructors the question always comes up, “What risk threshold or tolerable risk should I be using?” and “If I do not have one, how can I implement RBI?”

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    • Published on March 24, 2017

      Greg Alvarado discusses the concept of "risk in square feet per year", a powerful metric found in the API RP 581 Risk Based Inspection methodology. Understanding metrics such as this one will allow you to begin trending your risks, identifying best practices, and feel comfortable with the decisions you are making in your facility or corporation.

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