Weld Repairs Archives - The Equity Engineering Group, Inc.

Advanced Analysis of Equipment Repairs and Alterations

Jul 30, 2024

Authors: Derek Slovenec, Ph.D., P.E., Group Head – Senior Engineer II; Daniel McArthur, Ph.D., P.Eng., Senior Engineer II; Neal Wagner, Staff Engineer II

Maintenance programs require a significant investment of time, energy, and money to keep facilities and equipment operating safely and reliably. Despite these efforts, there will always be a need for repairs, replacements, or alterations. In this article, the authors use a variety of case studies to discuss how advanced analysis techniques can support several post-construction activities. They offer insight into how to evaluate weld repair plans and post-weld heat treatments, validate rerate conditions, and ensure structural integrity.

Hot Tap Evaluations and Practical Guidance for In-Service Repair Welding

Nov 1, 2023

Author: Raj K. Patadia, E.I.T., Staff Engineer I

In-service welding as part of a maintenance program is a practical and economical way to address leak repairs or new nozzle installations; however, it does come with a few risks, including burn-through and hydrogen-induced cracking. In this article, Raj will discuss the risks involved with in-service welding, thermal analysis to quantify the risks, and practical in-service welding considerations to ensure safe and successful hot tap connections.

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

Nov 1, 2023

Authors: Derek L. Rinas, P.Eng., Consulting Engineer I; Neal Wagner, Staff Engineer II

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.

Fundamentals of Design by Analysis

May 30, 2023

Author: Phil E. Prueter, P.E., Senior Vice President of Consulting

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.

Turnarounds: Executing a Problem-Solving Team

May 25, 2021

Author: Kraig S. Shipley

A successful turnaround has five main stages: setting goals, project scoping, detailed planning, execution, and post-turnaround planning. This article focuses on the advantages of a problem-solving team to resolve equipment inspection discovery and efficiently minimize lost opportunity costs.

The Importance of Pre-Turnaround Reviews

May 25, 2021

Authors: Paul J. Kowalski; Brian L. Jack

A turnaround can cost hundreds of thousands or even millions of a dollars per day. In this article, you’ll learn how Risk-Based Inspection (RBI) helps to manage the costly impact of turnarounds through proper pre-planning to minimize the overall downtime.

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