... cracks (SCC), in ammonia-carrying pipelines. A description of the tool qualification and verification procedures will also be outlined. anhydrous ammonia stress corrosion cracking ultrasonic technology Proceedings of the 2024 15th International Pipeline Conference IPC2024 September 23-27, 2024...

... Abstract Fitness for service assessments of stress corrosion cracking (SCC) crack fields must account for in-line inspection (ILI) tool measurement error. In deterministic assessments, the vendor-specified tool tolerance is typically added to the crack field depth and sometimes to the overall...

... Abstract This paper develops a theoretical model to investigate the impact of thermal cycling on the initiation of stress corrosion cracking (SCC). Prior to commissioning, coatings may be disbonded in places due to poor material selection or application. Corrosive gases (i.e., O 2 , CO 2...

... Abstract As data-driven decision making is becoming more critical in managing the integrity of natural gas transmission pipelines, this paper examines statistics on the identification of Stress Corrosion Cracking (SCC) using field excavations. The main tool used to detect SCC...

... Abstract Estimation of representative Crack Growth Rates (CGR) for pipelines with confirmed Stress Corrosion Cracking (SCC) is an Integrity management challenge. Published rates used within the industry can be unreliable, as most estimates assume a particular range of time periods for when...

... liquid (HVL) requirements. Carbon steels in anhydrous ammonia service are susceptible to internal corrosion and stress corrosion cracking (SCC) when certain contaminants are present, such as oxygen, carbon dioxide or sulfur dioxide. SCC can be mitigated by avoiding contamination by air, oxygen...

... assessment methodology addresses the susceptibility of dents to ductile fracture damages and stress-corrosion cracking integrity threats that can develop due to high membrane and bending loads in a dented pipe. This FFS assessment methodology has successfully been utilized to assess dents identified by ILI...

... method for stress corrosion cracking (SCC) based on EMAT-reported ILI data and correlated dig data associated with three natural gas pipelines in Canada. Comprehensive validation was conducted by comparing the EMAT-based mitigation plan with the in-ditch assessment of a large set of dig data. Three key...

... the mitigation plan for corrosion and stress corrosion cracking (SCC) anomalies considering all the uncertainties associated with pipe geometry, material properties, anomaly size, growth rate and assessment model error explicitly. This method enables TC Energy to maintain the annual probability of failure of all...

... Abstract Stress corrosion cracking (SCC) is a type of crack that grows in a corrosive environment, which threatens the integrity of pipeline and may lead to major and/or sudden pipeline failures. The complex mechanism of SCC involves interactions of electrolyte chemistry, coating quality...

...ADVANCED EDDY CURRENT ARRAY TOOLS FOR STRESS CORROSION CRACKING DIRECT ASSESSMENT ON PIPELINES Michael Sirois1, Mathieu Bouchard1, Ahmed Sweedy1 1 Eddyfi Technologies, 3425 rue Pierre-Ardouin, Québec (QC), Canada G1P 0B3 ABSTRACT Magnetic Particle Inspection (MPI) has been the main reference...

... Abstract Nova Transportadora do Sudeste (NTS) own and operate a gas transmission system in Brazil constructed in 1996. One of the confirmed primary integrity threats to this system is axial stress corrosion cracking. The pipelines vary in diameter, weld type, manufacturer and age. One...

... 1 Copyright © 2012 by ASME TOMOGRAPHY OF INCLINED SCC CRACKS IN AUSTRALIAN GAS PIPELINES Erwin Gamboa and Luke Zadow The University of Adelaide Adelaide, South Australia, Australia ABSTRACT Stress Corrosion Cracking (SCC) in pipeline steel occurs when an aggressive environment and tensile stresses...

... 07 04 2011 The stress corrosion cracking (SCC) susceptibility of carbon steel in fuel grade ethanol varies as a function of major and minor constituents in ethanol. The results of a round-robin testing on six different ethanol batches are presented. Significant variations in test...

... corrosion stress corrosion cracking steel non-ferrous metals elastomers DRAFT Copyright 2010 by ASME 1 Proceedings of the 8th International Pipeline Conference IPC2010 September 27 - October 1, 2010, Calgary, Alberta, Canada IPC2010-31050 INTEGRITY MANAGEMENT OF ETHANOL PIPELINES Narasi Sridhar Det...

... of coating and soil conditions. Furthermore, stress corrosion cracking occurs predominantly under disbonded coatings. This paper describes a numerical modeling approach to predict the potential and chemistry under disbonded coating. In addition, the use of a monitoring coupon to simulate pipeline...

... 10 12 2008 Stress corrosion cracking is one among several corrosion processes than can occur on buried pipelines. Efforts must be made in order to prevent this form of corrosion as long as pipeline collapse can cause accidents with high economic costs associated and environmental...

... such as field NDT technology, fitness-for-purpose equations, and SCC initiation and growth causes. Observations and trends related to these activities are also described herein. stress corrosion cracking SCC crack detection in-line inspection ILI ultrasonic crack detection field investigations dig...