A Guide to High-Temperature Creep Management

The Equity Engineering Group, Inc., April 13, 2023

API RP 571 - Damage Mechanisms Affecting Fixed Equipment in the Refining Industry

API RP 571, Damage Mechanisms Affecting Fixed Equipment in the Refining Industry, is a recommended practice developed and published by the American Petroleum Institute (API) that provides an in-depth look at nearly 70 different
Corrosion and Materials

Corrosion and Materials is a field of study that focuses on understanding the causes and mechanisms of corrosion. According to API 510...
Creep and Stress Rupture

Creep is the time-dependent deformation of a material under load. It is a generally slow developing form of degradation occurring in metals under stress and higher pressures. The amount of creep deformation that will be experienced is highly dependent upon the level of stress,...
Damage Mechanisms

Damage Mechanism is a general term used to describe mechanical or chemical processes that result in equipment damage or material degradation. These can range from corrosion, to...
Finite Element Analysis (FEA)

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Fitness For Service (FFS)

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Damage Control: Stress Corrosion Cracking Detection

March/April 2022 Inspectioneering Journal

This article provides an overview of some of the more common forms of stress corrosion cracking (SCC) with a focus on effective inspection methods for detecting these forms of cracking.
Damage Control: Stress Corrosion Cracking Assessment

May/June 2022 Inspectioneering Journal

Part 2 of the three-part series on stress corrosion cracking (SCC) that examines common engineering and FFS methods that can be leveraged to understand and evaluate the propensity for an existing form of SCC to lead to loss of containment.
Remaining Life Sensitivity to Longitudinal Weld Seam Peaking in High-temperature Low Chrome Piping

July/August 2016 Inspectioneering Journal

This article summarizes a recent finite element analysis (FEA)-based study that employs creep simulation techniques to investigate the elevated temperature response of piping with peaked longitudinal weld seams.
Managing Reliability of Ethane Crackers using DMR, RBI, and IOWs

May/June 2019 Inspectioneering Journal

A well-implemented and managed reliability program incorporating RBI, DMR, and IOWs can identify potential damage mechanisms, optimize maintenance and inspection activities, reduce risks, and improve the governance in managing Ethane Crackers.
Damage Control: Stress Corrosion Cracking Mitigation

July/August 2022 Inspectioneering Journal

This final installment of a 3-part series on SCC mitigation will provide practical, actionable steps to improve long-term equipment reliability through design, fabrication/welding, heat treatment, maintenance/repair, and process operating practices.

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Overview

High-temperature creep is a time-dependent phenomenon characterized by gradual, continuous deformation, affecting all metals and alloys, under the combined action of temperature and stress.

This eBook will focus on typical damage morphology and inspection methods used to identify and characterize high-temperature creep. A high-level overview of creep behavior in carbon steels and other alloys will also be presented, and generally accepted temperature thresholds defining the lower boundary of the creep regime for varying materials will be discussed.

Additionally, commonly affected pressure equipment in the oil and gas, petrochemical, power generation, and related industries will be outlined, and critical factors influencing damage susceptibility will be reviewed. Furthermore, examples of creep damage and in-service failures will be summarized to offer insight into this complex damage mechanism.

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A Guide to High-Temperature Creep Management

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