AMPP Store - NACE Conference Papers

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DLC Coatings in High-Temperature Hydrogen Sulfide Environment

Product Number: 51315-5993-SG

ISBN: 5993 2015 CP

Author: Tomasz Liskiewicz

Publication Date: 2015

$20.00

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Domain Diagrams for the Sulfide Stress Cracking Resistance of High Strength Low Alloy steel 41xx Bar Stocks

Product Number: 51320-14590-SG

Author: Vipul Shinde, Manuel Marya

Publication Date: 2020

$20.00

High-strength low-alloy steel bar stocks with 110ksi (758MPa) and 125ksi (862MPa) specified minimum yield strength (SMYS) are in demand for temporary and permanent downhole tools for sour service. NACE MR0175/ISO15156 currently allows the use of low-alloy steel bar stocks without any environmental restrictions up to 22HRC, which, by most specifications, corresponds to 80ksi (552MPa) SMYS. At higher SMYS, and with exclusions of API and proprietary sour tubular grades, NACE MR0175/ISO15156 does not address solid bar stocks, a gap and opportunity addressed by this investigation. Specifically, in this paper, the sulfide-stress cracking (SSC) of commercial UNS G41xxx (41xx) alloys, including 41xxMod (i.e., carefully selected or mill modified) is investigated following a series of NACE TM0177 Method A tests in either Solution B or A (NACE Region 3). Domain diagrams for 41xx alloys are disclosed, all demonstrating that 41xx solid bar stocks are SSC resistant above 150°F (66°C) when under a new and improved specification. When SMYS is raised to 125ksi (862MPa) with 34HRC max, a safe minimum temperature of 175°F (79.5°C) is confirmed for hollow bars, well in line with current NACE MR0175/ISO15156. The metallurgical and hardness requirements of 41xx alloys are also briefly discussed, along with opportunities for further modifications of 41xx bar stocks.

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Don’t Lose Your Head – A Case Study on the Repair of a Vertical Knock-Out Drum

Product Number: 51319-13137-SG

Author: Casey Whalen

Publication Date: 2019

$20.00

A 67” vertical knock-out drum suffered a system upset over three years ago resulting in a localized band of internal corrosion near the entire circumferential dome weld. After performing initial defect assessments it was determined that the pressure vessel could not operate at full capacity without suffering rapid through-wall defects around the entire circumference. Additionally the corrosion occurred beneath the lowest support meaning that a structural failure would result in the drum head detaching.To provide a short-term remediation a composite repair system was custom designed for the operator to address the three primary concerns: through-wall leaking internal pressure containment and preventing dome separation. Three unique systems were combined and used to achieve a successful repair for over three years while a replacement drum was ordered for the next turn-around. This paper will highlight the flexible design capabilities of composite materials in addressing critical component repairs when engineered appropriately.

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Double-Loop Electrochemical Potentiokinetic Reactivation Test For Precipitation Hardened Nickel Alloy UNS N07725

Product Number: 51321-16793-SG

Author: Maria Sofia Hazarabedian; Katerina Lepkova; Zakaria Quadir; and Mariano Iannuzzi

Publication Date: 2021

$20.00

Precipitation hardened (PH) nickel alloy UNS N07725 used in oil and gas subsea service have experienced several brittle fractures linked to hydrogen embrittlement (HE). The alloy’s susceptibility to cracking was associated with the precipitation of a Cr- and Mo-rich phase at grain boundaries (GBs). Since the failed components were compliant with the current standards, developing a new quality control test capable of distinguish susceptible microstructures became a priority for the oil and gas industry.

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Drift in Open-Circuit Potential of Carbon Steel in Nuclear Waste Simulants

Product Number: 51319-13101-SG

Author: Pavan Shukla

Publication Date: 2019

$20.00

A large quantity of high-level radioactive waste is stored in underground carbon-steel storage tanks at the Hanford site. The waste chemistries are alkaline with pH between 12 and 14. Carbon steel is expected to become passive and undergo passive dissolution under the alkaline conditions. Nonetheless certain corrosive species in the waste chemistries such as chloride and nitrate could cause pitting corrosion and stress corrosion cracking (SCC). The risk of pitting corrosion and SCC increases when open-circuit potentials (OCPs) drift in anodic direction compared to the initial values. Therefore it is important to determine the extent of drift as a function of waste chemistry and metal surface characteristics. Electrochemical experiments were conducted to determine extent of drift in the OCPs. The tests were conducted with the following three surface characteristics: (i) surface with passive film developing in waste simulants (ii) surface will mill-scale (iii) surface with combination of mill-scale and passive film developing in waste simulants. A specialized in-situ scratching mechanism was used to obtain desired in-situ surface characteristics. The electrochemical experiments were conducted for approximately 4 months and OCP evolution was recorded. This paper will present the results of the electrochemical tests and provide quantification of the OCP evolution as a function of surface characteristics.

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Drinking Down Under: Great Idea, Second Thoughts, The Right Path

Product Number: 41212-698-SG

Author: Dudley J. Primeaux II

Publication Date: 2012

$20.00

Thick-film elastomeric coating / lining systems have excellent performance characteristics in a variety of potable water lining work, including the polyurea spray elastomer technology. While some have cast doubt on the suitability of a polyurea system for immersion applications, there are a variety of commercial products with the NSF/ASNI-61 certification for potable water use that are performing quite well.

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Ductile Iron Wastewater Force Main Failure Analysis And Service Life Estimation

Product Number: 51321-16976-SG

Author: Stanley C. Agbakansi; Scott Lehman; Farzaneh Nosouhian; Christopher L. Alexander

Publication Date: 2021

$20.00

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Duplex Zinc Corrosion Protection For Marine Structures

Product Number: 51321-16511-SG

Author: M. Gagné

Publication Date: 2021

$20.00

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Durability Assessment of Foul-release Coatings

Product Number: 41212-715-SG

Author: David Tordonato, Dr. Allen Skaja

Publication Date: 2012

$20.00

The Bureau of Reclamation (USBR) is currently investigating the feasibility of using foul-release coatings to mitigate impacts caused by macro-fouling organisms such as zebra and quagga mussels. Durability of these coatings must be considered as a factor in determining overall life cycle costs. To this end, the Bureau of Reclamation has developed testing protocols to evaluate the durability of foul-release coatings with respect to abrasion, erosion resistance and the ability to overcoat existing equipment.

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Durability Assessment of Reinforced-SHCC Structures During Initiation and Propagation Phases of Corrosion

Product Number: 51321-16491-SG

Author: Hamidreza Fakhri/ Kenneth L. Fishman/Ravi Ranade

Publication Date: 2021

$20.00

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Durability Of Fluoropolymer Top Coat Systems Related To Standards

Product Number: 51321-16582-SG

Author: Naoki YABUMI/ Tsuyoshi MATSUMOTO/ Kenichiro YAMAUCHI/ Hiroyuki TANABE

Publication Date: 2021

$20.00

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E - Log I tests on oil Production Wells Case Study

Product Number: 51321-16266-SG

Author: Manuela Nimmervoll/Gregor Mori/Roland Haubner/Stefan Hönig/Wolfgang Hofer

Publication Date: 2021

$20.00

NACE Conference Papers

Association for Materials Protection and Performance