...Abstract Hydrogen Induced Cracking (HIC) and Sulfide Stress Cracking (SSC) are major issues of line pipes exposed to sour environment. Severity of sour environment determined in accordance with EFC 16 and NACE MR0175 / ISO15156 for low-alloy steels has been proposed based on experimental SSC...

...sour environment HIC hydrogen permeability in-situ ultrasonic inspection linepipe INTRODUCTION In the oil and gas industry, oil country tubular goods (OCTG) or linepipes are exposed to wet H₂S environments (Sour environments) in some cases. The presence of H₂S...

... induced cracking HIC blistering Thermo-Mechanically Controlled Process TMCP linepipe hardness BACKGROUND The manufacturing and field experience of high strength low alloy (HSLA) steel plates produced by Thermo-Mechanical Controlled Process (TMCP) are well defined in industry standards e.g. American...

...Frequent failures were observed in dead legs associated to piping systems at the oil and natural gas liquids (NGL) units operating in wet sour service environment. The non-HIC resistant carbon steel piping systems are susceptible to wet H₂S damage and acidic sour water corrosion ¹...

... Industrial Project (JIP) was launched at the end of 2015. The objectives were to evaluate how O₂ contamination affects H₂S cracking test results. The experimental program included HIC and SSC exposures with a range of low alloy steels covering all SSC severity regions of ISO 15156-2...

... pollution was added in the system, significantly higher corrosion rates were observed, associated with test solution acidification. At the same time, permeation efficiency was decreased by up to one order of magnitude. H₂S, O₂ HIC SSC hydrogen permeation hydrogen embrittlement X65...

... steels with significant resistance to hydrogen-induced cracking (HIC). These steels are produced through specific technologies for enhanced chemical composition control and microstructural engineering to incorporate the required strength, weld ability and improved HIC resistance. It is well established...

...For the long term plan, the major recommendation is to Replace (21) vessels out of the (30) HIC impacted vessels. These 21 vessels have shown consistent HIC growth. As a result, two capital projects were initiated with FPD to handle the replacement. Short Term Plan It was very important to confirm...

... HIC SOHIC Amine Caustic SCC ACSCC Materials Selection Integrity Operating Window IOW INTRODUCTION In a petroleum refinery, cost of corrosion-caused failures is a high percentage of maintenance cost. According to a comprehensive survey in US (year 1996), the total annual direct cost...

...-point bend 4Pb double-cantilever beam DCB sulfide stress cracking SSC stress-orientated hydrogen-induced cracking SOHIC hydrogen-induced cracking HIC soft-zone cracking SZC fitness-for-purpose OTI 95 635 BS 8701 sour service test method INTRODUCTION Company specifications require...

...Abstract Hydrogen Induced Cracking (HIC) is one of the major issues of line pipes exposed to sour environments. There are some guidelines on materials requirements for carbon and low alloy steels for H₂S-containing environments in oil and gas production. Generally, HIC susceptibility...

... cracking (SCC) and wet H₂S damage (sulfide stress cracking SSC, blistering, hydrogen induced cracking HIC, and stress oriented hydrogen induced cracking SOHIC). Wet H₂S damage occurs when there is increased hydrogen permeation due to increased H₂S partial pressure...

... efficiently reducing the negative impact of cyanides on the system. The main damage mechanisms likely to impact GRUs are sour water corrosion (SWC), hydrogen induced cracking (HIC), and stress oriented hydrogen induced cracking (SOHIC). All these damage mechanisms are closely related to the presence...

... on corrosion and hydrogen charging of steel in an H₂S containing environment. It is well known that H₂S promotes hydrogen entry into steels, that may result in many types of steel failures such as Hydrogen Induced Cracking (HIC), Sulfide Stress Cracking (SSC), and Stress-Oriented Hydrogen...

... corrosion cracking SCC OTI 95 635 BS 8701 sour service test method welded pipe residual stress reeled pipe hydrogen-induced cracking HIC soft-zone cracking SZC fitness-for- purpose The method has advantages over the ‘traditional' small scale tests, since the residual stresses, from pipe...

...Fit-For-Purpose HIC Testing Abstract Resistance testing of low alloyed steel pipes to Hydrogen Induced Cracking (HIC) is performed according to NACE standard TM0284. Within the latest revision of this standard in 2016, fitness-for-purpose testing, where the test environment and partial pressures...

... measurement, which enables readings to be taken from up to four external probes sequentially, within a short time cycle. Prospective applications of the new tool will be discussed in the context of the results presented, such as for hydrogen bake out monitoring. hydrogen permeation flux HIC naphthenic...

..., Steel B had a fine bainite microstructure by starting cooling from austenite region and completely transforming to bainite. HIC test conditions 30-day HIC tests were carried out basically in accordance with the NACE TM0284-2016 in order to clarify pH stability of test solutions for a long period...

...Abstract Hydrogen Induced Cracking (HIC) can be a major issue for line pipe exposed to sour environments. Most commonly, solution A in NACE TM0284 (5.0 wt% NaCl and 0.5 wt% CH₃COOH) is used under 1 bar H₂S to evaluate HIC susceptibility of steel plates and pipe products. High...

... flux emanating from the pipe wall was measured by the hydrogen collection method using a 15 cm diameter hydrogen flux collector. Abstract Steel in sour corrosive service is prone to various forms of hydrogen induced cracking (HIC). This can take several forms, such as center line cracking, surface...