Fitness-for-Service (FFS) Archives - Page 2 of 3 - The Equity Engineering Group, Inc.

Leveraging Advanced Analysis for Coke Drum Reliability

May 30, 2023

Coke drums in delayed coker units present many reliability problems because they are subjected to unique types of damage mechanisms due to their operation. Thermal fatigue cracking is common in regions of high thermal stress due to frequent and severe thermal cycling. Bulging is also common because of this severe thermal cycling that creates hot and cold spots due to channeling effects in the coke formation that results in thermal ratcheting or progressive cyclic plastic strain accumulation.

Fundamentals of Design by Analysis

May 30, 2023

Combining design by analysis (DBA) methods with modern computational approaches provides critical engineering tools for evaluating the structural integrity of in-service equipment and new equipment designs. To know which DBA technique to employ, it is essential to understand all possible failure modes based on equipment operation and loading scenarios. In this article, Phillip offers a high-level overview of modern DBA techniques and procedures for providing protection against plastic collapse, local failure, buckling, and cyclic failure.

Proactive FFS for Volumetric Damage

Jan 31, 2023

Performing a proactive FFS assessment on equipment with volumetric wall loss can save both time and money during a turnaround. You can minimize inspection scope and outline a set of well-defined ‘goal posts’ for determining acceptability and identifying a targeted inspection list. In this article, the authors share multiple tips to proactively assess volumetric damage as it relates to the requirements of API 579-1/ASME FFS-1, Part 4 and Part 5.

Proactive FFS: Advantages of Brittle Fracture Screening on Piping and Vessels

Jan 31, 2023

Proactively conducting brittle fracture assessments on higher-risk pressure equipment and piping, even if it was built relatively recently, will help prevent unexpected failures. This article identifies the three components that drive susceptibility to brittle fracture and includes two case studies to help demonstrate the benefits of using a fracture mechanics-based approach.

Hammered Pipe Still Standing: Is It Fit for Service?

Nov 28, 2022

Steam piping systems that are not adequately controlling condensate levels may experience a steam hammer event, which is when a slug of condensate is propelled at high velocity down the piping system. When the large dynamic slug force hits an elbow or pipe cap, it can displace the piping system or slide the pipe shoes off the structural members. In this case study, Kraig Shipley discusses a recent consulting project that used SIMFLEX-IV to determine if a steam header was still fit -for -service after a steam hammer event.

Fitness-for-Service of Aboveground Storage Tanks – Applicability of API 579

May 30, 2022

Fitness-for-Service (FFS) is a recognized industry practice for assessing equipment mechanical integrity when unanticipated damage is found and can often be used to extend service life while minimizing downtime and avoiding costly repairs. In this article, Katelyn Gustoff and Joel Andreani examine the applicability of using API 579-1/ASME FFS-1 (API 579) FFS and API 653 assessment standards with in-service ASTs.

Prevention of Overfill for Atmospheric Storage Tanks

Mar 29, 2022

The 5th edition of the ANSI/API Overfill Prevention for Storage Tanks in Petroleum Facilities was recently released. In this article, read about the recent changes to API 2350 and an 11-step procedure that you can apply at your processing facility.

Mitigating Piping Vibration Risk: Case Studies on Using the Level 1, Level 2, & Level 3 FFS Approach

Nov 30, 2021

Piping vibration failures are not uncommon in the oil and gas, petrochemical, and chemical processing industries. In this webinar, Dr. Bifano discusses and compares the future API 579 Part 15 method to current industry approaches (ASME OM-3) and uses several case studies to help you identify, evaluate, and mitigate piping vibration.

Case Study: Creep Assessment of a Heater Tube Using SagePlus™

Nov 17, 2021

High operating temperatures can lead to a variety of damage, including creep. During the SagePlus™ User Group Meeting, Matt S. Schaser shared a case study that estimated the remaining life of heater tubes operating at temperatures in the creep range.

2021 SagePlus™ and API RBI User Group Round-Up

Nov 17, 2021

“Great effort to provide useful content. I got the feeling I was part of an embracing community working together for the

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