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AMPP TM21453-2023, Laboratory Testing for Resistance to Environmentally-Assisted Hydrogen Stress Cracking in Welds

Picture for AMPP TM21453-2023, Laboratory Testing for Resistance to Environmentally-Assisted Hydrogen Stress Cracking in Welds
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This standard covers the testing of welds subjected to tensile stresses for resistance to cracking in aqueous environments containing a source of hydrogen charging. Carbon and low alloy steels and their matching welds are commonly tested for EAC resistance at room temperature where susceptibility is typically high. For other types of alloys, the correlation of EAC susceptibility with temperature is more complicated. For example, dissimilar welds of nickel alloy on carbon or low alloy steel have shown susceptibility at low, seabed temperatures (4 °C [39 °F]). Matching welds made on duplex stainless steels have shown similar susceptibility (DNV RP-F112).

Product Number: AMPP TM21453-2023
Publication Date: 2023
Industries: Oil and Gas , Gas/Liquid Pipelines , Oil and Gas Production
$109.00
$109.00
$109.00

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This standard covers the testing of welds subjected to tensile stresses for resistance to cracking in aqueous environments containing a source of hydrogen charging. Carbon and low alloy steels and their matching welds are commonly tested for EAC resistance at room temperature where susceptibility is typically high. For other types of alloys, the correlation of EAC susceptibility with temperature is more complicated. For example, dissimilar welds of nickel alloy on carbon or low alloy steel have shown susceptibility at low, seabed temperatures (4 °C [39 °F]). Matching welds made on duplex stainless steels have shown similar susceptibility (DNV RP-F112).

Keywords: Environmentally Assisted Cracking (EAC), Hydrogen Stress Cracking (HSC), Delayed Hydrogen Cracking Test (DHCT), subsea weld, hydrogen charging

This standard covers the testing of welds subjected to tensile stresses for resistance to cracking in aqueous environments containing a source of hydrogen charging. Carbon and low alloy steels and their matching welds are commonly tested for EAC resistance at room temperature where susceptibility is typically high. For other types of alloys, the correlation of EAC susceptibility with temperature is more complicated. For example, dissimilar welds of nickel alloy on carbon or low alloy steel have shown susceptibility at low, seabed temperatures (4 °C [39 °F]). Matching welds made on duplex stainless steels have shown similar susceptibility (DNV RP-F112).

Keywords: Environmentally Assisted Cracking (EAC), Hydrogen Stress Cracking (HSC), Delayed Hydrogen Cracking Test (DHCT), subsea weld, hydrogen charging

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Picture for AMPP Guide 21532-2023, Guideline for Materials Selection and Corrosion Control for CO2 Transport and Injection
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AMPP Guide 21532-2023, Guideline for Materials Selection and Corrosion Control for CO2 Transport and Injection

Product Number: AMPP Guide 21532-2023
Publication Date: 2023
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The purpose of this document is to provide guidance on materials selection and corrosion control for engineers in the design and identification of operating limits for projects that involve CO2 transport and injection. It should be used as a guide to help identify specific requirements which can be tailored for each project rather than as definitive requirements used straight from the document. References are also made to other relevant documents and standards. The guidance provided for an initial design should help the engineer focus on the most critical issues related to CO2 transport and injection. It is a rapidly growing subject area and much exploratory technical work is still being executed, and as such this document should be seen as a starting point with future updates and new insights to be expected.
Picture for AMPP TM21451-2023, Evaluation of Carbon and Low-Alloy Steels for Resistance to Stress-Oriented Hydrogen-Induced Cracking (SOHIC)
Available for download

AMPP TM21451-2023, Evaluation of Carbon and Low-Alloy Steels for Resistance to Stress-Oriented Hydrogen-Induced Cracking (SOHIC)

Product Number: AMPP TM21451-2023
Publication Date: 2023
$109.00

Carbon and low-alloy steels in plate form and their welded products may be susceptible to one or more forms of environmental cracking when exposed to wet H2S service conditions. These include, for example, (1) sulfide stress cracking (SSC) of hard zones and welds; (2) hydrogen-induced cracking (HIC) in the parent metal; and (3) stress-oriented hydrogen-induced cracking (SOHIC) in the region adjacent to welds of nominally acceptable hardness. Extensive work has been conducted over many years to understand various fundamental and applied aspects of these phenomena. Experiences in refinery wet H2S operations have directed particular attention to understanding SOHIC and the various metallurgical and environmental parameters that govern its occurrence.

 

Scope

 

This standard was prepared to provide a test method for consistent evaluation of pipeline and pressure vessel steels to SOHIC caused by hydrogen absorption from aqueous sulfide corrosion. The test conditions are not designed to simulate any specific service environment. The test is intended to evaluate resistance to SOHIC only, and not to other adverse effects of sour environments such as sulfide stress cracking (SSC), pitting, or mass loss from corrosion.

 
Picture for NACE SP0113-2023, Pipeline Integrity Management: Methods Selection and Implementation
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NACE SP0113-2023, Pipeline Integrity Management: Methods Selection and Implementation

Product Number: NACE SP0113-2023
Publication Date: 2023
$109.00

This standard practice provides guidance on selecting and implementing the Pipeline Integrity Management (PIM) methods (i.e., technologies and processes) to assess and to mitigate threats to pipeline integrity. Predominant threats to pipeline integrity are external corrosion (EC), internal corrosion (IC), stress corrosion cracking (SCC), mechanical damage (first, second, and third party or vandalism), equipment malfunctioning, manufacturing anomalies, construction anomalies, incorrect operations, weather-related, and external forces. The standard is focused on the “selection” and “implementation” of methods and best practices to manage pipeline integrity, but not necessarily on defining all aspects of PIM programs. 
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