Risk-based inspection

<h2 id="prioritization">Prioritization</h2>
<p>Items with high probability and high consequence (i.e. high risk) are given a higher priority for inspection than items that are high probability but for which failure has low consequences. This strategy allows for a rational investment of inspection resources.
</p>
<h2 id="objectives">Objectives</h2>
<p>RBI assists a company to select cost effective and appropriate maintenance and inspection tasks and techniques, to minimize efforts and cost, to shift from a reactive to a proactive maintenance regime, to produce an <a href="/facts/Integrity_engineering_audit/wb87CHzQ">auditable</a> system, to give an agreed-upon operating window, and to implement a <a href="/facts/Risk_management/xGhxtxdp">risk management</a> tool.
</p><p>The purposes of RBI include:
</p>
<ol><li>To improve risk management results</li>
<li>To provide a holistic, interdependent approach for managing risks</li>
<li>To apply a strategy of doing what is needed for safeguarding integrity and improving reliability and availability of the asset by planning and executing those inspections that are needed</li>
<li>To reduce inspections and shutdowns and provide longer run length without compromising safety or reliability</li>
<li>To safeguard integrity</li>
<li>To reduce the risk of failures</li>
<li>To increase plant availability and reduce unplanned outages</li>
<li>To provide a flexible technique able to continuously improve and adopt to changing risks</li>
<li>To ensure inspection techniques and methods consider potential failure modes</li></ol>
<h2 id="standards">Standards</h2>
<p>International engineering standards and recommended practices outline requirements, methodologies and the implementation of RBI.
</p>
<ul><li>EN 16991: Risk-based inspection framework</li>
<li>API 580: Risk-Based Inspection - Recommended Practice (Third edition, February 2016)</li>
<li>API 581: Risk Based Inspection Methodology - Recommended Practice (Third edition, April 2016)</li>
<li>ASME PCC-3: Inspection Planning Using Risk-Based Methods</li>
<li>DNV-RP G101: Risk Based Inspection Of Offshore Topsides Static Mechanical Equipment</li>
<li>EEMUA 159: Chapter 17 - RBI methodology for aboveground storage tanks</li>
<li>EPRI TR-112657: Revised Risk-Informed Inservice Inspection Evaluation</li>
<li>NCHRP Report 782: Proposed Guideline for Reliability-Based Bridge Inspection Practices</li></ul>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Reliability_engineering/cd6AS5w3">Reliability engineering</a></li></ul>

<ul><li>(1) Chapter 008, Risk-Based Inspection Technique by Mohamed El-Reedy (Author) Publisher: Gulf Professional Publishing (17 July 2012) ASIN: B00DGSWO4S</li>
<li>(2) A. Martínez, G. Lara*, R. Pascual, E. Lopez, Optimal failure-finding intervals for heat shields in a gas turbine combustion chamber using a multi-criteria approach, Journal of Engineering for Gas Turbines and Power, 137(7),  2015.</li></ul>

Risk-based inspection open-in-new

Risk-based inspection