Inspectioneering Journal

RBI Implementation for Process Plant Piping — A Case Study Using an Optimized Approach

By Ibrahim Kodssi at Independent Consultant, and Houssam Sabry at ADNOC LNG. This article appears in the March/April 2018 issue of Inspectioneering Journal


In a highly competitive world of challenging oil and gas market prices, operational excellence has become a necessity. Asset Integrity Management (AIM) lies at the heart of Operational Excellence.  One of the AIM optimization tools is Risk-Based Inspection (RBI). RBI provides a framework for understanding, identifying and mitigating business risks to maximize safety and optimize equipment reliability and resource allocation.  This framework follows a systematic approach for evaluating risk, analysing both the Probability of Failure (PoF) and Consequence of Failure (CoF).

Implementing RBI for process piping can be a very tedious and lengthy exercise, especially for major process plants with thousands of feet of interconnected piping. Thus, conducting RBI assessments for all piping can be a very time and resource consuming process.

This article shares the experience of ADNOC LNG following a structured RBI approach for piping groups. Piping was grouped based on process systems, corrosion circuits, PWHT application, corrosion allowances, and representative fluids. Then, RBI assessments were done to establish a representative line for the group while assessment results of risk and mitigation plans were copied to the remaining piping within the group.

The approach described in this article ensures that there is no sacrifice in assessment quality and no gaps would be found in piping integrity. By applying this process, it is estimated that about a million dollars in savings in term of man-hours were achieved when implementing the RBI program.

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Comments and Discussion

Posted by Wahed Gomaa on May 29, 2018
This article gives a great and valuable... Log in or register to read the rest of this comment.

Posted by John Okon on May 30, 2018
Very informative paper. Two thumps up! Log in or register to read the rest of this comment.

Posted by Duncan Humphrey on May 30, 2018
Excellent article. Many thanks for sharing. Log in or register to read the rest of this comment.

Posted by Randal Batiste on May 31, 2018
Very good article, good read and to the point.... Log in or register to read the rest of this comment.

Posted by Ahmed Alowaid on June 15, 2018
Good job and good article. Thanks gents. Log in or register to read the rest of this comment.

Posted by Syed Sher Ali on September 24, 2018
Great job, time and cost effective. Log in or register to read the rest of this comment.

Posted by Mohamed Ebaid on October 18, 2018
Very informative article Thanks Log in or register to read the rest of this comment.

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