Mechanical & Structural Engineering Archives - Page 2 of 3

Leveraging EP-7-3-3 Series for Equipment Repairs

Nov 1, 2023

The need for post-construction equipment repairs and maintenance best practices has led to ASME PCC-1 and PCC-2 standards becoming valuable resources for many owner-operators, yet these standards inherently maintain a level of generality. In this article, Derek and Neal will explain how the Equity Engineering Practices (EEPs), specifically EP 7-3-3, address the gaps and provide the extra context, details, and guidance to provide more comprehensive solutions for post-construction equipment repairs.

Fitness-for-Service for Asset Management of Air Coolers

Sep 25, 2023

Air-cooled heat exchangers (ACHEs) are designed to use ambient air to cool or condense a process fluid, which eliminates the need for large cooling water capacities. In this article, Kate and Ben discuss how a fitness-for-service (FFS) assessment can be a very powerful tool in air cooler lifecycle management to improve inspection planning and guide run, repair, or replace decisions.

Large-Scale SFS Projects

Jun 27, 2023

Occupational Safety and Health Administration (OSHA) requires owner-users to maintain essential documentation authenticating adequate design and maintenance of pressure vessels and storage tanks. Unfortunately, it is not uncommon to find equipment operating in industry with minimal or no documentation. In this article, Bob Davis and Stephanie Dux discuss how large-scale SFS projects are an efficient and effective way to evaluate equipment on a defined schedule. SFS projects provide guidance on roles and responsibilities, methodologies, assumptions, and documentation of results.

Basics of Rerating Equipment

Jun 27, 2023

Today, most in-service equipment remains in use for many years, or decades, beyond its intended design life. Throughout that extended service life, the process conditions can change, affecting equipment reliability. In this article, Matt Schaser discusses the importance of conducting rerates on equipment to meet jurisdictional requirements and use a variety of case studies to highlight some options available when performing a rerate assessment.

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.

A Deep Dive into Aboveground Storage Tank Settlement Evaluation

Feb 28, 2023

Foundational settlement, particularly non-uniform settlement, poses a significant threat to the integrity and operational reliability of aboveground storage tanks. In this article, Katelyn and Derek take a detailed look into at the most common API 653 evaluation methods to provide insight into the limitations and use of the various techniques and show the potential benefit of conducting a detailed analysis for differential shell settlement and bottom edge settlement.

Buckling Evaluation of Pressure Equipment and Plant Structures

Feb 28, 2023

In any industrial facility or plant, buckling poses a significant risk to nearly all components under compressive stress. Several finite element analysis (FEA) tools are used to solve complex buckling issues; however, without fully understanding the underlying mechanics and other relevant factors, the results can be misleading. In this article, Derek and Matthew review the methodology and limitations of the ASME VIII-1, ASME VIII-2, and AISC 360 standards for assessing buckling in beams, columns, steel structures, and pressure vessels.

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.

Let E²G’s SMEs Train Your Future SMEs!

Jun 28, 2022

Knowing the fundamentals of industry programs, codes and standards, and technology will prepare new engineers for long-term success. At E²G, we have developed a new training course that supports knowledge transfer between industry experts and junior engineers, plus fills the gap for those companies without a formal training program. This article expands upon the June 16th webinar in which Mark Harmody introduced the curriculum for the Fundamentals of Asset Lifecycle Management course (FALCM).

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