Relevant bibliographies by topics / Oil cleanliness

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Oil cleanliness'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Oil cleanliness"

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Sasaki, A. "Contaminants in Used Oils and Their Problems." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 220, no. 5 (May 1, 2006): 471–78. http://dx.doi.org/10.1243/135065005x33955.

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Contaminants in hydraulic and lubricating oils are harmful to lubrication. Therefore, contamination control of hydraulic and lubricating oils has been implemented in many factories and oil cleanliness standards of hydraulic and lubricating oils have been established as criteria for oil contamination control. There are two types of oil cleanliness standards: one is based on particle count and the other on gravimetric analysis. NAS 1638, ISO 4406, SAE AS4059, and JISB9930 belong to the former and ASTM D4898 and JISB9931 to the latter. The par tide count defines oil cleanliness by counting the number of particulate contaminants in the certain size ranges, and the gravimetric analysis shows the weight of contaminants remaining, on a membrane filter disc after a certain quantity of oil was filtered under vacuum, the oil was washed out, and the membrane filter disc was completely dried. Recently, there is a ten dency that particle count dominates the technology to judge oil cleanliness. Of course, it is important to quantify the number of particulate contaminants in oils. However, all particles are not contaminants, as particles like graphite and MoS2, which are countable by particle count, are good additives for lubricants. Therefore, it is very important for us not only to judge oil cleanliness by the particle count but also to know without prejudice what they are. This article discusses some methods to separate contaminants, what contaminants are, and how much they are.
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Osintcev, K. V., N. A. Pshenisnov, and A. I. Pshenisnov. "PROCESSES OF POLLUTION AND CLEANING OF TURBINE OIL IN LUBRICATION SYSTEMS OF STEAM TURBINES." Bulletin of the South Ural State University series "Power Engineering" 22, no. 3 (2022): 83–89. http://dx.doi.org/10.14529/power220309.

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The dependence of the parameters (cleanliness, contamination and purification) of the working fluid of the bearing lubrica-tion system and steam turbine control is obtained. Filters are intended to purify by removing solid contaminants that are harmful to the oil and the machine. If the filter is doing a good job, it is removing contaminants as fast as they are entering (ingression). This is known as mass balance. The number of particles coming into the oil system (particle ingression) equals the number being caught by the filter (particle removal); this achieves a stabilized and controlled oil cleanliness lev-el. The effect of air dispersed in oil on the operation of frame filters in steam turbine lubrication systems was analyzed. It has been established that when filtering aerated oil, soft particles (gas bubbles) increase the screening ratio of solid con-taminants by more than 4 times. Calculations show that air dispersed in oil increases the purity of the filtrate in the system by 21 times.
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Sander, John, Steve Mauritz, Terry Smith, Jeff Turner, Spencer Courtney, David G. Holt, David K. Wills, and S. W. Dean. "The Effects of Lubricant Ingredients on New Hydraulic Oil Cleanliness." Journal of ASTM International 6, no. 1 (2009): 101622. http://dx.doi.org/10.1520/jai101622.

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Lantz, Sean, Jack Zakarian, Scott Deskin, and Ashlie Martini. "Filtration Effects on Foam Inhibitors and Optically Detected Oil Cleanliness." Tribology Transactions 60, no. 6 (January 20, 2017): 1159–64. http://dx.doi.org/10.1080/10402004.2017.1285089.

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Kudlacek, Jan, and Petr Chabera. "Advanced Technologies for Determination of Surface Cleanliness." Technological Engineering 11, no. 1 (December 1, 2014): 16–19. http://dx.doi.org/10.2478/teen-2014-0003.

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Abstract For high utility value of products is significant quality of surface treatment. Among the processes that most affect the quality of surface treatment are mainly surface pretreatment processes, namely processes of cleaning (degreasing). This article is devoted to quality control after surface pre-treatment. It mainly deals with the modern method for detecting surface contamination grease based on fluorescence methods. Impurities such as grease, oil and other have characteristic fluorescence after illumination by UV source. This principle can be used to determine the purity of the substrate surface, thereby ensuring the quality of the surface. Surface cleanliness is very important factor for the correct application of subsequent technological processes.
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Hao, Jing, Guotian Li, and Shan Wang. "Research on improving cleanliness level based on the process of extraction and analysis of impurity particles of automobile engine." E3S Web of Conferences 360 (2022): 01010. http://dx.doi.org/10.1051/e3sconf/202236001010.

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Based on the case of the oil-gas separator for engine parts, this article has found the key steps to improve the cleanliness level by extracting and analyzing the impurity particles on its surface, and has reached the limit requirements in the enterprise standard. The whole detection process is divided into two parts: particle extraction and analysis. The impurity particles on the surface of the sample are extracted and collected by pressure washing, and the weight and size of the impurity particles are analyzed using a high-precision balance and a microscope. The test results show that the weight of the impurity particles on the surface of the oil and gas separator is 1.68 mg, and the maximum particle size is 887.31μm, which does not meet the product standard requirements. Through the analysis of the actual situation of the case to find the reasons and formulate measures, the final weight of the impurity particles on the surface of the improved sample is 1.22mg, and the maximum particle size is 481.40μm, which effectively improves the cleanliness level of the oil and gas separator.
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Dusa, Petru, Eugen Purice, Radu Lupascu, Iustina Ripanu, and Gabriel Fandarac. "Configuring a system for hydraulic oil contamination management." MATEC Web of Conferences 178 (2018): 04008. http://dx.doi.org/10.1051/matecconf/201817804008.

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Through contamination, we can understand anything foreign to a hydraulic system. In this paper we only refer to particle contamination. Analyzing and optimizing processes with regard to component cleanliness and fluid purity is the target of contamination management. The paper proposes a conceptual installation solution for the use of particle counters in order to optimize the measurement process. There is also a way of using the facility within a contamination management system.
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Kartika, Siska Ayu, Muhammad Dani, and Ardi Suherman. "Pemberdayaan Warga Kelurahan Klandasan Ilir, Balikpapan, dalam Pengelolaan Lingkungan dan Minyak Jelantah." Dinamisia : Jurnal Pengabdian Kepada Masyarakat 5, no. 2 (April 25, 2021): 466–73. http://dx.doi.org/10.31849/dinamisia.v5i2.5271.

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Environmental management, especially in this case regarding cleanliness and waste management issues must be a common concern. Community participation must be involved to increase a sense of concern for a clean and healthy environment. This Community Service Activity (PKM) was carried out in Klandasan Ilir, Balikpapan due to several problems related to the lack of awareness and understanding of the community in issues of environmental management, and how to manage household used cooking oil. The method of activities carried out is by identifying the existing problems, generate planning activity programs according to the residents' needs and time, as well as implementing and evaluating the activities carried out. As a result, the residents of Klandasan Ilir have a new understanding of the importance of environmental management and managing used cooking oil that is good for the environment and health, as well as increasing awareness of the importance of cleanliness and preservation of the surrounding environment.
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KON, Tomohiko, Tomomi HONDA, Yumiko NAKAMURA, and Chikako TAKATOH. "Oil degradation diagnosis based on ISO cleanliness code and the membrane patch color." Transactions of the JSME (in Japanese) 83, no. 856 (2017): 17–00285. http://dx.doi.org/10.1299/transjsme.17-00285.

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Bai, Zhen Hua, Hong Xin Si, Qing Tian Zhou, Xiu Jun Li, Shou Min Wu, and Xiao Dong Shi. "Development for the Comprehensive Optimization Technology of Process Lubrication Regime in Double Cold Reduction." Advanced Materials Research 279 (July 2011): 296–300. http://dx.doi.org/10.4028/www.scientific.net/amr.279.296.

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The setting goals of process lubrication were not all-inclusive in the previous manufacturer of double cold reduction. Strip shape, surface quality, the fuel consumption of unit and rolling stability could not be considered comprehensively. Aimed at the equipment and production craft characters of double cold reduction unit, at the basis of putting forward the comprehensive control index of a strip-shaped fuel consumption cleanliness for the first time, ensuring the shape quality of strip, lowering the oil residue on strip surface, improving the cleanliness of strip surface and reducing fuel consumption were defined as control targets; besides, the control of slip and heat-scratches were defined as constraints. A complete comprehensive optimization technology of process lubrication regime was established and has been applied to a 1220 double cold reduction unit belonging to Baosteel in China. Rolling speed, surface quality and strip shape quality are improved effectively, and oil consumption is reduced, meanwhile, the productivity and rolling yield of unit are ensured. This technology has created economic benefits for domestic steel makers and has further extended application value.
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Dissertations / Theses on the topic "Oil cleanliness"

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(9807671), Gregory Jensen. "On-line oil condition monitoring of mobile coal hauling units in establishing improved maintenance practices." Thesis, 2011. https://figshare.com/articles/thesis/On-line_oil_condition_monitoring_of_mobile_coal_hauling_units_in_establishing_improved_maintenance_practices/13457117.

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"The research presented represents the culmination of four years of on-site research at BMA Peak Downs Mine located south-west of Mackay in Central Queensland. The primary focus of this research was to improve oil cleanliness and filter life through the installation of Pall Corporation Stress Resistant Technology (SRT) filters across the steering, hydraulic, transmission and differential oil circuits on a Caterpillar (CAT) 784C coal hauling unit"--P. 2.

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Books on the topic "Oil cleanliness"

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H, Jenkins R., and Commission of the European Communities. Directorate-General for Science, Research and Development., eds. The effects on cold rolled and annealed sheet surface cleanliness of steel base composition, particulate and oil residues arising from different sources and annealing conditions. Luxembourg: Commission of the European Communities, 1986.

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Book chapters on the topic "Oil cleanliness"

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Hartlen, Kurtis. "Particle Count Testing and Its Impact on True Oil Cleanliness." In Standard Guides and Practices that Support the Lubricant Condition Monitoring Industry, 85–102. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2022. http://dx.doi.org/10.1520/stp163420200082.

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Mazzoli, Roberto, and Enrica Pessione. "Ancient Textile Deterioration and Restoration: Bio-Cleaning of an Egyptian Shroud Held in the Torino Museum." In Microorganisms in the Deterioration and Preservation of Cultural Heritage, 199–216. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69411-1_9.

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AbstractAncient textiles are fragile and several factors can affect their integrity. In the present chapter, the main agents of deterioration of old and new textiles, namely physical-chemical (light, oxygen, heat, and humidity) and biological factors as well as human erroneous interventions will be explored. As far as the biological deterioration is considered, the effects of microbial growth, primary and secondary metabolites (acids, solvents, surfactants, pigments) and enzymes (lipases, proteases, and glycosidases) on textile strength and cleanliness will be described in details. The main fungal and bacterial species involved in the damage (textile discoloration, black and green spots, cuts) will be reported. Adhesive application during restoration procedures is discussed to highlight the risk of glue thickening giving rise to dull precipitates on the fabric.The main strategies for oil-stain and glue removal (both animal glue, such as fish collagen, and vegetal glue, i.e. starch) will be described in the paragraph devoted to biorestoration. Finally, a case study concerning an ancient Coptic tunic housed in the Egyptian Museum of Torino, Italy, and biocleaned by means of gellan-immobilized alpha-amylase from Bacillus sp. will be largely discussed by reporting historical data, adhesive characterization, methods for artificial aging of simulated sample and glue removal from the artwork.
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Oberg, Dietrich. "Harmony (QHV): Practical Experiences with an Additional Sensory Criterion for the Quality Assessment of the Grade “Extra Virgin Olive Oil”." In Olive Cultivation [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102994.

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Well over 100 laboratories and tester groups worldwide check about 2,4 Mio tons of olive oil according to the Reg. (EWG) 2568/91 in its actual version or according to the method COI/T20 Doc.No.15. Pursuant to the regulation around 50% is EVOO. In order to evaluate these versatile typical sensory characteristics, the additional criterion “Quantified Harmony Value” (QHV) was developed. The QHV assessment is evaluated for all EVOO with special focus on the mass market. The method is based on the relationship of smell to taste and the interplay with the attributes such as bitter and pungent, on the cleanliness of all attributes and flavor, on the evaluation of complexity and persistency. All these findings play an important role in olive oil competitions—organized exclusively for a small number of premium products. But the higher the quality, the lower the quantity. Therefore, large quantities of EVOO need as well objective differentiations. But for the largest share of EVOO produced for millions of consumers, there are officially no distinguishing criteria. The additional criteria QHV close this gap and make it objectively possible to discriminate all oils in the EVOO category at commercial level. The study at hand explains the relevant method and shows the positive development of the last 10 years using the example of the importing country Germany.
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Conference papers on the topic "Oil cleanliness"

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Rowland, Eddie, and D. Scott MacKenzie. "Quench Oil Cleanliness and Part Quality." In HT2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.ht2019p0300.

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Abstract Serious problems related to quench oil contamination have always affected the heat treat industry. These problems have led to shortened oil life, variations in the quench curve, loss of production time, unplanned maintenance, sludge accumulation, surface deposits, and massive amounts of rework costs associated with additional part cleaning. This paper will detail the causes for contamination, including; carbon deposits, oxidation of the oil that result in unwanted by-products, ingress of dirt from parts and external sources, and water ingress. We also discuss a way to eliminate the extensive downtime associated with excessive sludge, and cleaning of reservoirs and equipment. The paper will give visual representations of the effects of quenching in dirty oil vs. quenching with clean oil. Additionally, we will look at several case studies that show the relationship of clean oil to clean parts and proper quenching properties. The paper will also detail various methods of particulate and water removal and how effective they are with the quench oil application. This session would be important for the attendees that are utilizing quench oils and are looking to extend their oil life, quality of their parts, and reducing overall costs associated with the process.
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Elo, Lauri, Juuso Pekkonen, and Jari Rinkinen. "Technical Cleanliness of Assembled Fluid Power Components." In 8th FPNI Ph.D Symposium on Fluid Power. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpni2014-7850.

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The demands on the cleanliness of fluid power systems increase continuously. The KompuNW project, which was launched in 2011, aimed to find out the technical cleanliness of fluid power components in Finland, and the technical cleanliness was measured with commercial cleanliness cabinets. These cabinets apply well for hydraulic components where a rinsing pen should reach the test component surfaces that need to be controlled. In some cases the flow rate or the pressure produced by the cleanliness cabinets is insufficient for detaching particles from the surfaces of hollow components e.g. hydraulic cylinders or oil reservoirs. For this reason the functional test bench, designed and constructed in IHA, uses low viscosity hydraulic oil to extract contaminants from the assembled fluid power components. The extracted particles can then be analysed in the test bench with a microscope or an inline particle counter. This paper has several aims. First the backgrounds of fluid power components are described. Then this paper will present the differences in the definitions and codes of oil cleanliness (ISO 4406:1999, SAE AS4059E:2005) and component cleanliness (ISO 16232:2007). In addition, the differences between the test bench and the commercial cleanliness cabinets are presented. Standards ISO 16232:2007-5 and ISO 18413:2002 were applied in the design of the test bench. The main points of these standards are introduced in this paper, too. Finally the extraction procedures of a hydraulic cylinder and oil reservoir are shown with examples of the extraction curves of these components.
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Logan, Mark R., Wesley A. Middleton, and John D. Palazzotto. "Railroad Diesel Engine Cleanliness: The Impact of the Engine Oil Additive Formulation." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1996. http://dx.doi.org/10.4271/961094.

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Novak, Nejc, Rok Jelovčan, and Franc Majdič. "Development of portable filtration unit with self-diagnostics for industrial use." In International conference Fluid Power 2021. University of Maribor Press, 2021. http://dx.doi.org/10.18690/978-961-286-513-9.21.

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It is well known that contamination of fluids shortens the life of hydraulic systems. Sometimes the necessary operating conditions (high pressures and high flow rates) make adequate filtration in the suction, working, or return lines through the filter difficult because it would interfere with the work process. A high cleanliness of the oil can be achieved with a so-called "bypass" filtration, which is part of the whole hydraulic device with its own circuit. Another way to ensure fluid cleanliness is to filter the hydraulic fluid with a portable filtration unit, which is the main topic of this paper. The fluid is pumped from the reservoir of the main hydraulic device, through the portable filtration unit and returned to the reservoir. In this way it is possible to clean the hydraulic oil without the need for costly and unnecessary "bypass" hydraulic components for filtration.
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Johansen, Per, Michael M. Bech, Sune Dupont, Uffe N. Christiansen, Jens L. Sørensen, David N. Østedgaard-Munck, and Anders Bentien. "An Experimental Study on High-Flowrate Ultrasonic Particle Monitoring in Oil Hydraulics." In BATH/ASME 2022 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fpmc2022-89721.

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Abstract In this article an experimental analysis on detection of particles in oil hydraulics by an in-line, high flowrate ultrasonic sensor is presented. This experimental study is conducted by the implementation of a particle concentration sensor prototype in a simple hydraulic circuit. In this system the contamination particles are introduced in an open tank. The sensor prototype is based on the particle scattering of ultrasound measured in a 90° angle in relation to the incoming wave. An experimental analysis of the sensors ability to detect specific concentrations of silicon dioxide particles in oils of varying viscosity grade is presented. Furthermore, an experiment involving a used hydraulic oil from an industrial plant is shown, where the sensor is able to detect increased particle contamination in the system, when the open tank is actively stirred. It is from the experimental analysis found that the prototype can detect particles of above 40 microns in common hydraulic oils, however the background field intensity and frequency could be increased to lower the size of the detectable particles. The paper is concluded with a theoretical analysis, which is examining the background field intensities and frequencies needed to meet standards within measurements of oil cleanliness.
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Smith, Robert W. "An Assessment of Current U.S. Pipeline Flushing Practice and Decommissioning Requirements: How Clean Is Clean?" In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28036.

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This paper will discuss an assessment of current industry practice with respect to decommissioning requirements for offshore pipeline flushing and purging operations — specifically addressing corrosion and cleanliness in out-of-service and decommissioned offshore pipelines. The results, observations, and conclusions will also be discussed, from the ongoing research project entitled “Assessment of Current Pipeline Flushing and Decommissioning Requirements - Research and Field Testing Phase A” that was funded through the Technology Assessment & Research (TAR) Program of the U.S. Minerals Management Service. Data collected during this study has specific application to regulation and effectiveness of industry practice for future pipeline and flowline flushing, purging, and decommissioning. The main applications from this research are: 1) Understanding how a pipeline corrodes while out of service; 2) Determining whether the line is fit for service for possible reuse; and 3) Determining the cleanliness of decommissioned offshore oil and gas pipelines. The study results will lead to a more in-depth understanding of the condition of out-of-service and decommissioned pipelines as well as an improved public perception of the use and reuse of submerged pipelines for oil and gas activities on the Outer Continental Shelf of the United States.
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Goyal, Rajesh Kumar, Mahesh Gajjar, Ashok Joshi, and Anupkumar Tamhane. "Manufacturing of LSAW Pipes Using Hot Rolled Sheets for Sour-Service Application." In ASME 2021 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/iogpc2021-64072.

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Abstract The exploration and transportation of fluids from corrosive fields or reserves demand corrosion-resistant pipelines. The pipelines for sour-service application demand higher resistance to H2S corrosion because of higher sulphur content observed in the geographical locations. The pipelines laid in the corrosive and marshy lands demand high wall thickness to allow for wall thinning due to corrosion. The linepipes manufactured using TMCP plates are widely accepted for sour-service applications. The use of cut-to-length sheets from hot rolled coils for the manufacturing of LSAW pipes is economical but having limited acceptance by the pipeline operators. Welspun took an initiative to develop the linepipes for an onshore sour-service application using API 5L X60MS grade cut-to-length sheets from TMCP hot rolled coils procured from an approved steel mill. The LSAW pipes of 24” OD × 14.27 mm WT were manufactured by the JCO-E press at Welspun Pipes Mill in Anjar-Gujarat-India. The experience of 24”OD × 14.30 mm WT, API 5L X60MO grade pipes manufacturing using TMCP plates procured from another approved steel mill, was used to decide factors such as alloy design, cleanliness, strength, DWTT, hardness, HIC, SSCC, CVN for the selection of cut-to-length sheets. This paper deals with sheet-to-pipe behavioural changes in properties before and after cold mechanical expansion. Wherever possible, the comparison was also made with plate-pipe behavioural changes in properties.
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Singer, Gabriela, Wei Shao, Songhua Chen, Phil Hawley, Z. Harry Xie, and Shouxiang Mark Ma. "Evaluating the Effectiveness of Rock Cleaning." In 2022 SPWLA 63rd Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2022. http://dx.doi.org/10.30632/spwla-2022-0064.

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Core cleaning is a fundamental step in laboratory core analysis since it affects the interpretation of core data, thus its applications. For example, the thoroughness of core cleaning is an essential factor for characterizing reservoir rock wettability (Ma and Amabeoku, 2015). Although well-established core cleaning methods exist, characterizing the effectiveness of these methods continues to be a challenge. In this study, we present an innovative method based on NMR T_2 measurements at 100% water saturation (S_W1). Since T_2 of the water phase is sensitive to oil coating on solid surface, the shift in T_2 log-mean (T_2LM ) for water after cleaning provides a direct measurement for detecting rock surface cleanliness. The effectiveness of two standard cleaning protocols are evaluated on ten outcrop cores including sandstone, dolomite, limestone, and chalk. Rock surface cleanliness after each cleaning stage is characterized by the ratio of (T_2LM^end)⁄(T_2LM^start ) at S_W1, where (T_2LM^end)⁄(T_2LM^start )<1 indicates increased cleanness or more water wetness. Therefore, a method is developed for characterizing the effectiveness of cleaning and can be used to select optimal and economical means for cleaning reservoir core samples or cuttings.
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Stanley, Ian, and Stefan Schmitz. "Advances in Filtration in Automatic Lube Oil Filters." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6135.

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In 2006 an automatic lube oil filtration system with an automatic backflushing filter and a centrifuge for diesel locomotives was presented at the ASME Spring Technical Conference [1]. The filter cleans itself continuously and the system can be used instead of conventional disposable paper filters to reduce servicing requirements, improve oil cleanliness and reduce the oil system’s exposure to contaminants. In 2015 at the ASME Fall Technical Conference, a development of the system was presented that introduced an electric pump to boost both centrifuge and automatic filter performance at lower engine speeds, as seen during locomotive idling or coasting. The next development addresses the automatic filter mesh, something that has not improved substantially over the last 20 years. The main challenge with improving the mesh for a backflushing filter has been balancing the filtration grade with self-cleaning performance. By going to a finer mesh that catches ever smaller particles, the filter element tends to become more difficult to backflush. For a given wire diameter the free flow area also decreases when the openings become smaller, reducing the maximum mesh loading. Reducing the diameter of the wire used increases the free flow area, but makes the mesh more fragile and difficult to weld. A recent advancement in the mesh design now allows the automatic filter to filter the oil to a much finer degree than was previously possible while maintaining high self-cleaning performance. The filtration performance was evaluated by using the multi-pass method according to ISO 16889, while the backflushing performance was evaluated on our in-house test stand. Currently these elements are being field tested. Being able to filter and separate much smaller particles is expected to reduce long term engine wear and, in certain cases, improve oil life.
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Jen, Chang-Wei, and Walter V. Rauf. "Use of Cross Flow Fuel Filtration for Gas Turbine Engines." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27474.

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U.S. Navy surface combatants use pre-filters and filter separators in the fuel oil service system to filter out sediment and water in order to meet the fuel oil cleanliness requirements to operate the gas turbine engines and generators. The ships have reported high usage rates of the pre-filters necessitating the replacement of the pre-filter elements. High replacement rates of the elements obviously increases the burden on ships force but it also increases the operating costs due to the cost of the replacement elements and the storage, handling and disposal of the hazardous material generated. One of the causes of the poor quality fuel oil is the purifier’s inability to remove all sediment and water from the fuel oil when transferring fuel from storage to service. A prototype two-stage self-cleaning cross flow filtration unit was installed in parallel with a fuel oil purifier on a surface combatant. This unit was operated during a deployment cycle and had a through put in excess of one million gallons of fuel. The purpose of this paper is to discuss the background leading to the design of the unit, the installation, operation, data, results and future design changes.
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