Case Studies
Inspectioneering contributors and authors have published numerous mechanical integrity case studies in Inspectioneering Journal and throughout our online resources. This page brings all of these case studies into one location to better help you learn from the experience of others.
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Inspectioneering JournalBy Samer E. Ibrahim at woodHTHA of hydrogen-containing equipment can be prevented with appropriate material selection and fabrication, appropriate welding procedures, regular inspection of equipment using proven, effective technologies and equipment operated by qualified technicians, well monitored and controlled temperatures and hydrogen partial pressure.
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Inspectioneering JournalBy Nayef Alanazi at Saudi Aramco R&D Center, and Muthukumar Nagu at Saudi Aramco R&D CenterThis article presents a case study from a Middle Eastern refinery that explores a heat exchanger that failed unexpectedly after five years in service. There are multiple initiators that can cause under deposit corrosion (UDC) in heat exchangers in addition to sulfur, which is the focus of this article.
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Inspectioneering JournalBy Ralph E. King P.E. at Stress Engineering Services Inc., John Norris, P.E. at Stress Engineering Services, Dr. Kannan Subramanian, Ph. D., P.E. at Stress Engineering Services Inc., and Daniel Ayewah, P.E. at Stress Engineering Services Inc.There is concern in the industry over recent findings of reduced toughness fittings and flanges at risk of brittle fracture. This article provides an overview; possible contributors; measures taken to address; and a proposed FFS approach to address the issue.
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Inspectioneering JournalBy Dhananjay H. Rawal at Systech Consultancy ServicesThis article details the experience an oil company had when using FEA to evaluate the implications of a damaged pipeline. Specifically, it presents an efficient method that combines analytical techniques with FEA to determine the pipeline’s fitness for continued service.
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Inspectioneering JournalBy Geoff Clarkson at UTComp, Inc.With no industry consensus documents in existence that provide guidance for determining FFS of FRP, this article provides a case study that illustrates how an existing European design standard on GRP tanks can be used to calculate expected changes in FRP for FRP vessels.
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Inspectioneering JournalBy Ibrahim Kodssi at ADNOC LNG, and Houssam Sabry at ADNOC LNGImplementing RBI for process piping can be a very tedious and lengthy exercise, especially for major process plants with thousands of feet of interconnected piping. This article shares the experience of ADNOC LNG following a structured RBI approach for piping groups.
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Inspectioneering JournalBy Rami Mattar at Amerapex CorporationThis article features a case study on the feasibility of a wall-sticking drone for effectively conducting ultrasonic testing and other NDT methods on equipment at elevated heights.
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Inspectioneering JournalBy Phillip E. Prueter at The Equity Engineering Group, Inc.Given the concern throughout industry regarding the potential for brittle fracture failures, PWHT guidance to address potential issues arising from the recent changes in PWHT code requirements for carbon steel is examined in this article, and commentary on the potential reduction in fracture toughness due to PWHT is provided based on a review of published literature.
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Inspectioneering JournalBy Greg Alvarado at Inspectioneering JournalMost of us that work integrity and reliability understand what we do and how we do it. But how many of us understand WHY we do things? Understanding the motives behind our activities, initiatives and programs can help to galvanize and lay a foundation for long term success.
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Inspectioneering JournalBy Elizabeth Allen at DNV GL, and Michelle Havlock at DNV GL
This article explains the Statistically Active Corrosion Assessment, which is a tool for determining appropriate and realistic corrosion growth rates which can assist pipeline operators in optimizing the value of in-line inspection data, remediation programs and excavation costs, and determine a re‑inspection interval; all while maintaining safety.
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Inspectioneering JournalBy Geoff Clarkson at UTComp, Inc.This article, part two in a series, provides a case study of an inspection and evaluation of a Fiberglass Reinforced Polymer (FRP) column using nondestructive ultrasound readings on the outer surface of the FRP.
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Inspectioneering JournalBy James R. Widrig at Quest IntegrityIn-service equipment failures present a considerable challenge to reliability engineers. This article presents a case study of a convection tube failure in a furnace and the analyses that were performed to understand the root cause and determine the remaining tube life.
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Inspectioneering JournalBy Daniel Cypriano at Petrobras, and Henrique Ventura at PetrobrasAlthough value-drivers often differ between facilities, all can agree that effective asset management strategies should lead to better decision making. In this case study, the authors detail how process-based risk management strategies can make for improved use of equipment.
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Inspectioneering JournalBy Michael Turnquist at Quest Integrity GroupThis article outlines the engineering and assessment methodologies applied during the analysis of a failure of a 15-foot diameter reactor tank supported by four legs.
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Inspectioneering JournalBy Hossam Aboegla at Lloyd's Register EnergyAsset integrity and life cycle management are unique but intertwined concepts. The dynamic process between these principles has a significant impact on the lifecycle of individual assets and, therefore, the integrity of an entire plant.
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Partner Content
LOTIS utilizes laser profilometry to conduct internal steam reformer tube inspections. The data captured by LOTIS is exceptionally powerful when combined with our LifeQuest™ remaining life assessment capabilities, providing an integrated solution set for the process and syngas industries.
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