Relevant bibliographies by topics / Pipelines Maintenance and repair

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

Academic literature on the topic 'Pipelines Maintenance and repair'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 January 2023

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Journal articles on the topic "Pipelines Maintenance and repair"

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Martyniuk, R. T., and O. T. Chernova. "MODERN METHODS OF REPAIR OF PIPELINES." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 17(64) (November 22, 2022): 179–89. http://dx.doi.org/10.31471/2304-7399-2022-17(64)-179-189.

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At the stages of maintenance and repair of pipeline systems, there is a need to use flameless cutting in existing pipelines, in particular: when it is necessary to connect intake chambers and start cleaning pistons, and during pipeline repair with a complete replacement of the pipe body without stopping the transportation of the product. Also, fireless cutting is effectively used to connect branch pipelines during the development of pipeline systems. One of the progressive directions of improving the maintenance and repair of pipelines is the development of cutting methods that would ensure high efficiency and environmental friendliness of the work. However, their successful application is impossible without a theoretical and experimental study of the process of welding the branch pipe to the operating pipeline.
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Varshitsky, Victor M., Igor B. Lebedenko, and Eldar N. Figarov. "Method for determining process parameters in the repairing of pipelines with out-of-spec curvature." SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 10, no. 1 (February 29, 2020): 17–21. http://dx.doi.org/10.28999/2541-9595-2020-10-1-17-21.

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Pipe sections with curvatures exceeding the required specified values are often found during the pigging of major pipelines. Process parameters for repairs have to be defined in order to develop a maintenance project that also includes works to restore the specified status of the section found. A corresponding method is known for cases of relocation of an initially straight pipeline. The authors developed a method for determining process parameters for repairing pipelines with out-of-project axis curvature. The method is based on modeling the deformation of a pipeline with initial axis curvature; it takes into account the actual operating conditions of the pipeline and in-line inspection data. Examples of calculating process parameters for repairs and stress-deformed state of pipeline sections with out-of-specs curvature have been presented. The modeling results confirm the possibility of using the method for evaluating the repair process parameters, the length of the required trench exposure, and the magnitude and boundaries of additional digging-in or the need to lift the pipeline in order to determine the stress–strain state of the pipeline section to be repaired during execution and after the completion of repairs.
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Toropov, E. S., S. M. Dorofeev, T. G. Ponomareva, and S. Yu Toropov. "Repair-and-renewal operations of pipelines from the data on their maintenance." Oil and Gas Studies, no. 5 (November 12, 2020): 94–103. http://dx.doi.org/10.31660/0445-0108-2020-5-94-103.

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Maintaining of the pipeline system in an operational condition can't be achieved without solving the problem of their protection from internal corrosion as the main factor that leads to numerous accidents. In conditions of limited funding, the creation of scientifically based methods that regulate repair work on difficult areas [1] or those that are not repairable using "classical" methods is a very urgent task. In this way, the use of repair methods without stopping product pumping, in terms of justifying the placement of technological equipment, even more increase the importance of the problem being solved. Research methods are experimental and theoretical character and based on the analysis and processing of statistical data received during the experimental studies of field objects. The result of this work was the creation of a methodology that allows determining the order of repair work on pipelines with different degrees of corrosion damage and its speed on different sections of the route [2]. And as a result, reasonable placement of technological equipment along the pipeline route for in-line pipeline repair, without stopping the pumping of the transported product.
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Grudz, V. Y., V. V. Grudz, V. M. Bodnar, and M. S. Chernetsky. "IMPROVING THE EFFICIENCY OF FUNCTIONING OF REPAIR-OPERATING UNITS IN THE SYSTEM OF MAINTENANCE AND REPAIR OF MAGISTRALS." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 1(53) (September 27, 2019): 104–15. http://dx.doi.org/10.31471/2304-7399-2019-1(53)-104-115.

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The classification of failures and damages of the linear part and its separate elements is carried out, variants of technology of carrying out of preventive and repair-restoration works and modular-technological structure of repair and maintenance units are formulated. Particular attention is paid to improving the efficiency of the operation of a separate repair and maintenance unit during maintenance and repair with a known layout scheme and a certain mode of control and restoration works by choosing the optimal technology of work and rational equipment of units and crews leaving for the route. On the basis of the analysis of the technology of work execution it is shown that only a small part of the repair and maintenance measures requires the use of powerful machinery and equipment, which include the first level of priority work on the replacement of gas pipeline sections, work, damage elimination, work on elimination of significant pipeline displacements, work for restoration of soil collapse of the main gas pipeline. In addition, each type of work on the objects of the linear part requires the use of the same vehicles. The type and number of vehicles depend on the particular operating conditions, as well as on the possibility and feasibility of purchasing and operating a particular type of equipment. The method of estimation of indexes of maintenance of linear part of main gas pipelines and efficiency of functioning of repair and maintenance units during maintenance and repair is developed.
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Karmanova, S. V., I. S. Glushankova, G. S. Arzamasova, and A. A. Cherepanov. "Investigation of Thermal Destruction Processes of Waste Insulation of Main Gas Pipelines." Ecology and Industry of Russia 22, no. 10 (October 5, 2018): 28–33. http://dx.doi.org/10.18412/1816-0395-2018-10-28-33.

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The possibility of applying the thermal method for neutralizing waste re-insulation during the major overhaul of main gas pipelines is considered. The initial composition of the organic part of the waste is shown. The thermal effects observed during the decomposition of waste in a controlled atmosphere, the composition of waste gases and the results of thermal analysis of waste samples resulting from the replacement of insulation of gas pipelines selected for maintenance and repair of linear sections of main gas pipelines are examined. Ways of solving the problem of elimination of waste generated during the gas pipeline overhaul are suggested.
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Wang, Xinhui, Heng Li, Bing Li, Jie Sheng, Jinqiang Zhao, Yanlong Ding, and Duhui Lu. "Simulation Analysis of External Damage and Repair of the Gas Transmission Pipeline." Advances in Materials Science and Engineering 2022 (August 26, 2022): 1–9. http://dx.doi.org/10.1155/2022/3978649.

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External damage and repair of a gas transmission pipeline were often encountered in industrial production. The damage of the gas transmission pipeline and the evaluation after repair could be solved by the finite element simulation method. Damage assessment and postrepair assessment were carried out for an external damage example of a gas transmission pipeline in an oil field based on finite element software ABAQUS. Ideally, the finite element simulation results were modified by using the theoretical calculation results of the gas transmission pipeline. Then, the simulation analysis of the defective gas transmission pipeline was carried out, and the corresponding maintenance suggestions were put forward. Finally, the B-type sleeve repair and carbon fiber composite repair were simulated and analyzed, respectively, and the bearing and stress of two kinds of repair were compared and analyzed. It was concluded that the repair effect of the carbon fiber composite was better than that of B-type sleeve. The research results could provide a new evaluation mechanism for pipeline defects and pipeline defects after repair and laid a foundation for quantitative risk assessment and repair of gas transmission pipelines.
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Grudz, V. Ya Grudz Ya Grudz, Ya V. Grudz, V. M. Bodnar, and V. V. Samsonenko. "FORECASTING REPAIR WORK ON GAS PIPELINES UNDER A CENTRALIZED SERVICE SYSTEM." Prospecting and Development of Oil and Gas Fields, no. 3(68) (April 4, 2019): 31–37. http://dx.doi.org/10.31471/1993-9973-2018-3(68)-31-37.

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The management process of the gas-main pipelines' technical state that includes different-type constituent elements and has a complex multihole and looped structure is considered. The task falls under the optimization category of the maintenance process. The study aims to optimize the preventive overhaul graph of the gas supply system that includes independent subsystems. An optimum schedule of maintenance service will be determined by selection condition of the timepoint values that provide with the quality indicators' extremum of the functioning of the process facility complex within a centralized service of gas supply system. It was suggested the technical-and-economic index, in particular the average summarized unit costs to system operation, be used as a criterion for the optimality of maintenance process. The characteristic curve obtained from conducted studies provides a way to estimate the maintenance states of the complicated gas supply system that includes different-type, geographically distributed but functionally interlinked process facilities of the gas supply system in the region of the central maintenance and repair base, they give an opportunity to plan an optimum schedule of the preventive overhaul of the gas supply system.
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Liu, Ying, Daryoush Habibi, Douglas Chai, Xiuming Wang, Hao Chen, Yan Gao, and Shuaiyong Li. "A Comprehensive Review of Acoustic Methods for Locating Underground Pipelines." Applied Sciences 10, no. 3 (February 4, 2020): 1031. http://dx.doi.org/10.3390/app10031031.

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Underground pipelines are vital means of transporting fluid resources like water, oil and gas. The process of locating buried pipelines of interest is an essential prerequisite for pipeline maintenance and repair. Acoustic pipe localization methods, as effective trenchless detection techniques, have been implemented in locating underground utilities and shown to be very promising in plastic pipeline localization. This paper presents a comprehensive review of current acoustic methods and recent advances in the localization of buried pipelines. Investigations are conducted from multiple perspectives including the wave propagation mechanism in buried pipe systems, the principles behind each method along with advantages and limitations, representative acoustic locators in commercial markets, the condition of buried pipes, as well as selection of preferred methods for locating pipelines based on the applicability of existing localization techniques. In addition, the key features of each method are summarized and suggestions for future work are proposed. Acoustic methods for locating underground pipelines have proven to be useful and effective supplements to existing localization techniques. It has been highlighted that the ability of acoustic methods to locate non-metallic objects should be of particular practical value. While this paper focuses on a specific application associated with pipeline localization, many acoustic methods are feasible across a wide range of underground infrastructures.
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Matsuk, Z. N., T. V. Bunko, A. S. Belikov, and V. A. Shalomov. "Regularities of safe control of piston compressor units of mobile compressor stations." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (2021): 76–81. http://dx.doi.org/10.33271/nvngu/2021-2/076.

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Purpose. Ensuring the optimal mode of gas transportation from local sections of the main gas trunkline (GT), subject to repair (maintenance) and/or shutdown, to existing main gas trunkline based on the calculation, determination, and establishment of rational values of the operating modes of mobile compressor stations during the entire time of gas pumping. Methodology. The studies are based on existing physical principles and laws that describe the effect of the properties of natural gas and the geometric parameters of pipelines through which gas is pumped on the dynamics of changes in the mass and pressure of the transported gas. The calculation of the change in the mass and pressure of the gas in the gas pipeline from which the gas is pumped is based on a number of existing theoretical and empirical dependencies included in the generally accepted methods for their calculation. Known physical relationships and mathematical models are used to carry out the calculations. Findings. The mass approach to the issue of calculating the gas transportation time is more mathematically accurate than the volumetric one. The ratio of the relative mass to the relative gas pressure in a localized section of the main gas pipeline, during the entire pumping time, is a constant value. The use of the values of the quantities obtained at the point of intersection of the graphs of changes in the relative mass and relative pressure of the gas, in the preliminary calculation of the time for pumping gas, or pressure, or mass, or the volume of gas in each time interval, makes it possible to select the optimal rate of building up/reducing gas pressure by compressor units and optimal modes of gas transportation by operating gas pipelines during the operation of mobile compressor stations. Originality. The proposed approach to calculating and determining the time of gas pumping by mobile compressor stations from local sections of the main gas pipelines subject to repair (maintenance) and/or shutdown to sections of existing main gas pipelines proves that it is advisable to establish stable patterns in the transportation of natural gas using reciprocating compressor units only after modeling in time the change in the mass and pressure of gas in the local section of the main gas pipeline from which the gas is pumped. Practical value. The proposed approach to optimizing the time of gas pumping by mobile compressor stations makes it possible to increase the level of energy and resource efficiency of gas transmission enterprises, as well as to improve the technical and economic indicators of technologies for repairing the main gas pipelines, compressor stations of main gas pipelines associated with the need to bleed gas from sections of the main (technological) pipelines subject to repair (maintenance) and/or shutdown. Optimization of gas pumping time significantly reduces the time spent by employees of gas transmission enterprises under the influence of hazardous and harmful production factors, thereby reducing the level of relevant risks. Gas emissions and associated risks are reduced by 90%.
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Neganov, Dmitry A., Nikolay E. Zorin, and Alexander E. Zorin. "Analysis and opportunities for development of methodical approaches to planning of trunk pipeline overhaul." SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 10, no. 3 (June 30, 2020): 263–75. http://dx.doi.org/10.28999/2541-9595-2020-10-3-263-275.

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The article presents defined scientific basis for planning repair-recovery works on trunk oil and gas pipelines, based on obtaining data about technical condition of pipelines and joined analysis of reliability indicators, safety and risk indicators with regards to material and technical opportunities of operating company and strategic characteristics of facilities. The article contains consolidated scientific opinion about the methods for planning repair-recovery activities on pipelines of Russia, USA and Europe. It is noted, that the approaches, implemented in real life, can differ from scientific basis due to a variety of causes. On the basis of the outlined concept, the analysis of practical approaches, applied for planning of overhauls of trunk gas and oil pipelines in Russia, was performed. The specialists use high technology analytical system to initiate remedial measures, focusing on reliability parameters and considering economic feasibility. However, what we consider promising is the extension of organizational and technical basis with the purpose of obtaining volume of statistic and actual source data, necessary for expert assessment. The planning of replacement of trunk pipeline sections is based on the results of continuous monitoring of the technical condition of the pipes by smart pigging and the involving into calculation both actual parameters of facilities operation and actual mechanical characteristics of pipe metals and welded connections, considering overall influence of specific production technology, steel work quality and service life length. With the purpose of further developing this approach, it is practical to extend the list of considered defect parameters and the use of the whole system of the pipeline technical condition data by adding the quantity of hours in service up to the failure in a probable scenario. The author stated the primary directions of developing methodical approaches to arranging the technical maintenance and repair of oil and gas pipeline for long-term operation.
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Dissertations / Theses on the topic "Pipelines Maintenance and repair"

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Hobson, Alan George Cawood. "Optimising the renewal of natural gas reticulation pipes using GIS." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52980.

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Thesis (MA)--University of Stellenbosch, 2002.
ENGLISH ABSTRACT: A major concern for Energex, Australia's largest energy utility in South East Queensland, is the escape of natural gas out of their reticulation systems. Within many of the older areas in Brisbane, these networks operate primarily at low and medium pressure with a significant percentage of mains being cast iron or steel. Over many years pipes in these networks have been replaced, yet reports show that unaccounted for gas from the same networks remain high. Furthermore, operation and maintenance budgets for these networks are high with many of these pipes close to the end of their economic life. When operation and maintenance costs exceed the costs of replacement, the Energex gas utility initiates projects to renew reticulation networks with polyethylene pipes. Making decisions about pipe renewal requires an evaluation of historical records from a number of sources, namely: • gas consumption figures, • history of leaks, • maintenance and other related cost, and • the loss of revenue contributed by unaccounted for gas. Financial justification of capital expenditure has always been a requirement for renewal projects at the Energex gas utility, however the impact of a deregulation in the energy utility market has necessitated a review of their financial assessment for capital projects. The Energex gas utility has developed an application that evaluates the financial viability of renewal projects. This research will demonstrate the role of GIS integration with the Energex financial application. The results of this study showed that a GIS integrated renewal planning approach incorporates significant benefits including: • Efficient selection of a sub-network based on pipe connectivity, • Discovery of hidden relationships between spatially enabled alphanumeric data and environmental information that improves decision making, and • Enhanced testing of proposed renewal design options by scrutinizing the attributes of spatial data.
AFRIKAANSE OPSOMMING: 'n Groot bron van kommer vir Energex, Australië se grootste energieverskaffer in Suidoos- Queensland, is die verlies van natuurlike gas uit hul gasdistribusie netwerke. In 'n groot deel van ouer Brisbane opereer hierdie netwerke hoofsaaklik teen lae en medium druk, met 'n aansienlike persentasie van hoofpyplyne wat uit gietyster of staal bestaan. Al is sommige pyplyne in hierdie netwerke met verloop van tyd vervang, maak verslae dit duidelik dat 'n groot deel van die gas in hierdie netwerke steeds langs die pad verlore gaan. Die operasionele - en onderhoudsbegrotings vir hierdie netwerke is boonop hoog, met 'n groot persentasie van die pyplyne wat binnekort aan die einde van hulle ekonomiese leeftyd kom. Wanneer operasionele- en onderhoudsonkostes die koste van vervanging oorskry, beplan Energex se gasvoorsienings-afdeling projekte om verspreidingsnetwerke te hernu met poli-etileen pype. Om sinvolle besluite te neem tydens pyplynhernuwings, word verskeie historiese verslae geraadpleeg, insluitend: gasverbruikvlakke, lekplek geskiedenis rekords, onderhoud- en ander verwante onkostes, asook die verlies van inkomste weens verlore gas. Alhoewel finansiële stawing van kapitale uitgawes nog altyd 'n voorvereiste was tydens hernuwingsprojekte by Energex, het die impak van privatisering op die energieverskaffingsmark dit noodsaaklik gemaak om hulle finansiële goedkeuringsproses vir kapitaalprojekte te hersien. Energex het dus 'n sagteware toepassing ontwikkel wat die finansiële gangbaarheid van hernuwingsprojekte evalueer. Hierdie navorsing sal die moontlike integrasie van geografiese inligtingstelsels (GIS) met dié van Energex se finansiële evalueringspakket demonstreer. Die resultate van hierdie studie toon dat die integrasie van GIS in die hernuwingsproses aansienlike voordele inhou, insluitende: • die effektiewe seleksie van sub-netwerke, gebaseer op pyp konnektiwiteit, • die ontdekking van verskuilde verwantskappe tussen geografies-ruimtelike alfanumeriese data en omgewingsinligting, wat besluitneming vergemaklik, en • verbeterde toetsing van voorgestelde hernuwingsopsies deur die indiepte-nagaan van geografiesruimtelike elemente.
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Rohem, Ney Robson Ferreira. "Desenvolvimento de sistema de reparo para dutos e tubulações industriais utilizando materiais compósitos de matriz polimérica." Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1597.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
O emprego de materiais compósitos de matriz polimérica como reparo e reforço em estruturas nas indústrias do petróleo tem se tornado uma prática industrial comum. O uso destes reforços compreende desde o recobrimento de superfícies com defeitos, passantes ou não, até o reforço estrutural. Na última década, muitos estudos foram feitos para o desenvolvimento de uma metodologia alternativa para reforço e reparo de dutos com materiais compósitos. Recentemente, em 2006, o sistema ISO de normas técnicas apresentou a primeira especificação técnica de "Reparo em Compósitos para dutos das indústrias de Petróleo, Petroquímica e de Gás Natural Qualificação, projeto, instalação, testes e inspeção" ISO/PDTS 24817. O presente trabalho tem como objetivo o desenvolvimento de um sistema de reparo, utilizando materiais compósitos de matriz polimérica para o reparo e reforço estrutural de dutos e tubulações industriais, em conformidade com a Norma ISO 24817:2006. Foram desenvolvidos procedimentos para a confecção de corpos de prova destinados a ensaios mecânicos, e para aplicação do sistema de reparo. O sistema de reparo é destinado a defeitos tais como perda de espessura, amassamentos e danos transpassantes. Foi construída, em paralelo, toda a infraestrutura para a montagem de um laboratório destinado ao estudo de materiais compósitos, no Laboratório de Adesão e Aderência. São apresentados resultados de parte dos ensaios mecânicos necessários, comparação dos resultados obtidos com modelos teóricos e testes hidrostáticos.
The use of polymer matrix composites to repair and strengthen structures in the oil industry has become a common industry practice. The use of these reinforcements extends from covering surfaces with defects, through wall or not, to structural reinforcement. In the last decade, many studies have been done to develop an alternative approach to the strengthening and repairing of pipelines with composite materials. Recently, in 2006, the ISO system of technical standards presented the document technical support "Petroleum, petrochemical and natural gas industries Composite repairs for pipework Qualification, design, installation, testing and inspection" ISO/PDTS 24817. This study aims to develop a repair system using polymer matrix composite materials for repair and reinforcement of piping and pipelines in accordance with ISO 24817:2006. Procedures where developed for the confection of test specimens for mechanical testing, and application of the repair. The system is intended to repair defects such as thickness loss, gouges, and damage through wall or not. In parallel, an entire infrastructure was built for the conception of a laboratory for the study of composite materials at the Laboratory of Adhesion and Adherence. Here are presented the results of the required mechanical tests, the comparison results with theoretical models, and the hydrostatic testing.
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Nam, Le Thanh. "Stochastic Optimization Methods for Infrastructure Management with Incomplete Monitoring Data." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/85384.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第14919号
工博第3146号
新制||工||1472(附属図書館)
27357
UT51-2009-M833
京都大学大学院工学研究科都市社会工学専攻
(主査)教授 小林 潔司, 教授 大津 宏康, 教授 河野 広隆
学位規則第4条第1項該当
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SILVA, JOAO LUIS BATISTA DA. "CONSIDERATIONS ON THE MODELING OF CONNECTIONS FOR REPAIR OF PIPELINES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=13044@1.

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PETRÓLEO BRASILEIRO S. A.
A redução de espessura de parede de dutos, causada por corrosão, é um dos defeitos que mais afetam a integridade dos mesmos. Este defeito pode ocorrer no metal base, nas soldas longitudinais e circunferenciais. Com a expansão do número de dutos rígidos instalados no fundo do mar e o avançado tempo de uso, a indústria de petróleo tem desenvolvido diversas ferramentas de reparo desses dutos, sem comprometer a segurança e a perda da produção. O objetivo preliminar desse trabalho foi o estudo e a geração de modelos computacionais, os quais uma vez parametrizados, possam servir como ferramenta para análise de conexões de reparo de dutos submarinos. No decorrer desse estudo, sobre dois tipos de conexões de reparo, foi percebido que o comportamento na falha, descrito pelos modelos numéricos das mesmas, possui detalhes que precisavam ser esclarecidos em complementação ao programa experimental adotado (Alves,1995). Uma fase dessa pesquisa constou o trabalho de laboratório no qual repetiu-se a confecção da mistura de resina epóxi e cimento, segundo as referencias adotadas no programa experimental de Alves e realizaram-se ensaios de compressão em corpos-de-prova cilíndricos moldados com essa mistura visando o levantamento de curva tensão versus deformação e determinação do coeficiente de Poisson. Outra fase dessa pesquisa foi a consulta de diversos outros trabalhos que indicassem o comportamento dessa mistura, quando submetida à compressão. Por fim, foram gerados modelos analíticos e numéricos da conexão de reparo. Seus resultados foram comparados com os resultados obtidos no programa experimental de Alves. Com base nessa comparação foram levantadas as discrepâncias dos resultados, bem como as possíveis causas dessas discrepâncias e suas possíveis razões e sugestões para se alcançar o objetivo inicial foram indicadas.
The reduction of pipeline wall thickness caused by corrosion is one of the defects that more affect pipeline structural integrity. These defects can take place in the metal base, in the longitudinal and circumferential welding. With the expansion of the rigid submarine pipelines mesh already installed and considering the advanced time of using, the oil industry has been developing several tools for pipeline repair without compromising the safety and avoiding production stops. The preliminary objective of this work was the study and the generation of computer models, which once parameter, they could be a tool for analyze the repair connection of submarine pipeline. During this study, about two types of repair connection, it was realized that the behaviour at failure described by the connection numerical models has details which needed to be explained in addition to the considered experimental program (Alves). One phase of this research was the laboratory works in which it was possible to repeat the mixture of epoxi resin and cement, according to the references adopted in the experimental program (Alves). Compression test were conducted on cylindrical specimens made of this mixture for determining the stress-strain curve and the Poisson coefficient. Another phase of this research was the consulting of other works which could indicate the expected behaviour of the mixture subjected to the compression load. Finally, analytical and numerical models of repair connection were generated the results were compared with those obtained on experimental program (Alves) Based on comparison, discrepancies were detected as well as they possible causes. Suggestions to obtain the initial objective were indicated.
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Al-kaabi, Hamad A. "Airlines' maintenance, repair and overhaul (MRO) configurations." Thesis, Cardiff University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437225.

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ROSAS, MARCO ANTONIO PEREZ. "EVALUATION OF SLEEVE TYPE REPAIR MODELS FOR PIPELINES WITH THICKNESS LOSS DEFECTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16778@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Devido ao seu alto custo e à sua importância estratégica, a busca por soluções que estendam a vida útil das redes dutoviárias é plenamente justificável. Uma vez detectado um defeito, procura-se restabelecer sua capacidade operacional, reparando a seção danificada. A maioria dos estudos está orientada a determinar o comportamento de um duto reparado utilizando técnicas numéricas e/ou experimentais. Outros apresentam equações simples para o cálculo da espessura de reparo tentando garantir a segurança na operação, porém sem demonstrar o comportamento do mesmo. Neste trabalho foi desenvolvida uma metodologia analítica para determinação do comportamento de dutos reparados por luvas metálicas coladas ou de material compósito. Esta metodologia permite também conhecer as pressões que ocasionarão o escoamento e falha, seja no duto ou no reparo. Acredita-se que com a utilização desta metodologia o projeto de um reparo será mais eficiente, permitindo escolher melhor o material e a espessura de reparo, segundo as exigências de cada projeto. São apresentados resultados de simulações numéricas com o propósito de conhecer o comportamento, otimizar o dimensionamento e avaliar os resultados obtidos analiticamente para estes tipos de reparos. Por fim, é apresentado um estudo de caso, resultados de testes experimentais e um exemplo de aplicação para a determinação da espessura de reparo. Com isto foi possível conhecer os comportamentos não estudados numericamente, e mostrou-se que, o controle das deformações no defeito dependerá do módulo de elasticidade e da espessura do reparo, como era esperado.
Due to their high cost and strategic importance, the search for solutions to extend the life cycle of pipeline networks is fully justifiable. Once a defect is detected, an attempt is made to restore operational capacity, repairing the defective section. Most studies are aimed at determining the behavior of a repaired pipe by using numerical and/or experimental techniques. Others present simple equations for the calculation of repair thickness trying to ensure a safe operation, yet without demonstrating the behavior of the pipe. In this study, an analytical methodology has been developed to determine the behavior of pipes repaired by attached metal sleeves or sleeves of composite material. This methodology also enables to know the stresses which may cause leakage and failure, be it on the pipe or on the repair area. It is believed that by using this methodology the project of a repair would be more efficient, enabling a better choice of repair material and thickness, according to the requirements of each project. Numerical simulation results are presented with the purpose of knowing the behavior, optimizing the sizing and assessing the results obtained analytically for this kind of repairs. Finally, a case study is presented, with the results of experimental tests and an example of application for determining repair thickness. This way it was possible to know behaviors that had not been studied numerically, and it was demonstrated that the control of defect deformations will depend on the elastic modulus and thickness of the repair, as was expected.
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Bridges, Michael R. "Optimally funding Army Installation repair and maintenance activities." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341063.

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Thesis (M.S. in Operations Research) Naval Postgraduate School, September 1997.
"September 1997." Thesis advisor(s): Robert F. Dell. Includes bibliographical references (p. 43-44). Also available online.
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Nikou, Vasilios 1972. "Welded repair and maintenance in the space environment." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/91796.

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Thesis (Nav.E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.
Includes bibliographical references (leaves 73-75).
by Vasilios Nikou.
Nav.E.
S.M.
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Kelly, Annette. "Comparative analysis of intermediate level maintenance repair process." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FKelly.pdf.

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Toves, Peter Rocky. "Evaluating Success Factors in Implementing E-Maintenance in Maintenance, Repair, and Overhaul (MRO) Organizations." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/767.

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Despite more than a decade-long process to transition aircraft maintenance practices from paper-to electronic-based systems, some organizations remain unable to complete this transition. Researchers have indicated that while organizations have invested resources in technology improvements, there remains a limited understanding of the factors that contribute to effectively managing technology-enabled change. The purpose of this case study was to identify and explore socio-technical (ST) factors that inhibit an effective transition from a paper-based system to an electronic-based system for aircraft maintenance. A conceptual model applying theories of change management, technology acceptance, systems thinking, and ST theory informed the research. Thirteen participants provided data via semistructured interviews, field observations, follow-up interviews, other documentation, and a questionnaire. Data were analyzed with open and axial coding techniques to identify themes, which were then crosschecked and triangulated with observation and follow-up interview data. Findings revealed communication issues, a fundamental misconception in training, and a false assumption that all personnel easily acquire computer literacy. Benefits gained from this study should assist maintenance, repair, and overall (MRO) organizations within the Department of Defense to improve current and future technology implementation as the research underscores real-life issues from a comparable organization. The implications for positive social change provide a greater understanding of technology-enabled change and contribute to the development of best practices for technology initiatives that address common ST issues in the MRO workplace.
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Books on the topic "Pipelines Maintenance and repair"

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Mohitpour, Mo. Pipeline operation & maintenance: A practical approach. 2nd ed. New York, NY: ASME, 2010.

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Sherstnev, Nikolay. Maintenance and repair of ship pipelines, valves and filters. ru: INFRA-M Academic Publishing LLC., 2019. http://dx.doi.org/10.12737/1048799.

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The tutorial shows the design features of ship pipelines, valves and filters that affect the conditions of their operation and methods of maintenance and repair. Recommendations for external inspection and control of their elements are given. The features of disassembly and Assembly of various types of valves and filters are shown. With examples from ship practice typical defects of the specified elements, ways of their definition and elimination are considered. It is intended for students of higher educational institutions (specialization in the specialty "Operation of ship power plants") and University teachers. It can also be used in the system of secondary vocational education in the specialty "Operation of ship power plants".
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Murty, K. Industrial piping practice and maintenance. New York, N.Y: Industrial Press, 2010.

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Conference, American Society of Civil Engineers Pipeline Division Specialty. Pipelines 2002: Beneath our feet : challenges and solutions. Reston, Va: American Society of Civil Engineers, 2002.

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Murty, Kirshna. Handbook of piping practice and maintenance. New York, N.Y: Industrial Press, 2010.

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Bulk water pipelines. London: Thomas Telford, 1997.

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Zabela, K. A. Likvidat͡s︡ii͡a︡ avariĭ i remont podvodnykh truboprovodov. Moskva: Nedra, 1986.

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Beloborodov, V. N. Otechestvennye bestransheĭnye tekhnologii vosstanovlenii︠a︡ truboprovodov: Monografii︠a︡. Krasnoi︠a︡rsk: SFU, 2010.

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Gumerov, A. G. Razrabotka metodov povyshenii͡a︡ resursa dlitelʹno ėkspluatirui͡u︡shchikhsi͡a︡ nefteprovodov. Moskva: VNIIOĖNG, 1991.

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Gas pipeline renewal: Insertion technology. Houston,Tex: Gulf Pub. Co., 1990.

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Book chapters on the topic "Pipelines Maintenance and repair"

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Smyth, Robert, and Buddy Powers. "Pipeline Repair." In Oil and Gas Pipelines, 657–64. Hoboken, New Jersey: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119019213.ch45.

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Bruce, William A., and John Kiefner. "Pipeline Repair Using Full-Encirclement Repair Sleeves." In Oil and Gas Pipelines, 635–56. Hoboken, New Jersey: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119019213.ch44.

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Dangel, Rainer. "Maintenance and Repair." In Injection Moulds for Beginners, 263–67. München: Carl Hanser Verlag GmbH & Co. KG, 2016. http://dx.doi.org/10.3139/9781569906323.008.

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Dangel, Rainer. "Maintenance and Repair." In Injection Molds for Beginners, 267–71. München: Carl Hanser Verlag GmbH & Co. KG, 2020. http://dx.doi.org/10.3139/9781569908198.008.

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Son, Lee How, and George C. S. Yuen. "Repair of Concrete Structures." In Building Maintenance Technology, 124–56. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-23150-8_7.

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Gaythwaite, John W. "Rehabilitation, Maintenance, and Repair." In Design of Marine Facilities, 593–644. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784414309.ch11.

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Tricker, Ray. "Installation, maintenance and repair." In Wiring Regulations Pocket Book, 370–91. London: Routledge, 2021. http://dx.doi.org/10.1201/9781003165170-9.

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Crow. "Construction, Maintenance and Repair." In Jetties and Wharfs, 199–228. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003176916-8.

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Cadena, Richard. "Maintenance, Troubleshooting, and Repair." In Automated Lighting, 357–79. Third edition. | New York, NY : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315724492-17.

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Tricker, Ray. "Installation, maintenance and repair." In Wiring Regulations in Brief, 436–63. Fourth edition. | Abingdon, Oxon ; New York : Routledge, 2021.: Routledge, 2020. http://dx.doi.org/10.1201/9781003001829-9.

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Conference papers on the topic "Pipelines Maintenance and repair"

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Timashev, S. A., and A. V. Bushinskaya. "Practical Methodology of Predictive Maintenance for Pipelines." In 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31197.

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Predictive maintenance (PdM) is the leading edge type of maintenance. Its principles are currently broadly used to maintain industrial assets [16]. Yet PdM is as yet not embraced by the pipeline industry. The paper describes a comprehensive practical risk based methodology of predictive maintenance of pipelines for different criteria of failure. For pipeline systems the main criterion is integrity. One of the main causes of loss of containment is pipe wall defects which grow in time. Any type of analysis of pipeline state (residual life time, probability of failure (POF), etc.,) is based on the sizes of discovered defects, which are assessed during the ILI or DA. In the developed methodology pipeline strength is assessed using one of the five internationally recognized design codes (the B31G, B31mod, DNV, Battelle, Shell 92). The pipeline POF is calculated by the comprehensive Gram-Charlier-Edgeworth method [14]. Having in mind that the repair actions are executed on particular cross-sections of the pipeline, the POF are calculated for each defect present in the pipeline. When calculating POFs, the defect sizes (depth, length and width), wall thickness and pipe diameter, SMYS of the pipe material, the radial and longitudinal corrosion rates, and operating pressure (OP) are considered random variables each distributed according to its PDF. In the proposed method of PdM of pipelines the remaining life time can be assessed using following criteria: POF = Qth; dd = 80%wt; SMOP = MAOP; ERF = MAOP/SMOP, if ERF ≥ 1, the pipeline needs immediate repair; dd = 100%wt. Here Qth is the ultimate permissible POF, dd is the depth of the most dangerous defect, wt is pipe wall thickness, SMOP is the maximal safe operating pressure SMOP = DF·Pf, MAOP is the Maximum Allowable Operating Pressure, Pf is the failure pressure, DF is the design factor (for B31Gmod DF = 1.39), ERF is the Estimated Repair Factor. The above criteria are arranged in descending order according to the growing level of their severity in time. The prediction of future sizes of growing defects and the pipeline remaining life time are obtained by using consistent assessments of their corrosion rates CRs. In the PdM methodology these CRs may be considered as deterministic, semi-probabilistic or fully stochastic values. Formulas are given for assessing the CRs using results of one ILI, two consecutive ILI, with or without verification measurements, and for the case when several independent types of measurements are used to assess the defect sizes. The paper describes results of implementation of the developed methodology on a real life pipeline. The time to reach each of the limit states given above was calculated, using results of two consecutive ILI divided by a three year interval. Knowledge of these arrival times permits minimizing the maintenance expenditures without creating any threats to its integrity and safety.
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Knights, J. D., and S. Laughlin. "Pipeline Repairs: The History of the Technology and the Efforts to Codify and Document Standards." In ASME 2017 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/iogpc2017-2445.

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This paper will review the history of pipeline repairs. Prevailing codes, standards , design guidance’s and regulation typically permit several types of repairs: namely: replace pipe as a cylinder, repair by grinding or buffing out a defect, weld overlays techniques, utilizing a steel reinforcement sleeve or utilizing a composite reinforcement sleeve or composite wrap. This paper will review the history of the technology and the efforts to document and codify consensus standards such as ASME PCC 2 Article 4.1, ASME B31.8s, ASME B31.4 and ISO 24817. Contemporaneous issues related to the subject will be addressed as well of the durability of the aforementioned repair methods. Globally pipeline operators are required to operate their pipelines in a safe and reliable manner, preventing any unplanned loss of containment, and ensuring the asset continues to run reliably delivering a profit for the pipeline owner/operator. Most pipeline operators are required to maintain their pipelines to an approved code either by National Regulators and/or insurers with the aim of improving safety of the pipeline and unplanned losses of containment. Most National Regulators guidance for the repair of pipelines refers to either ASME B31.4 for liquid pipelines and B31.8(S) for gas pipelines, while for process piping most operators complete repairs following the ASME PCC2 Article 4 guidelines. These guidelines are credible and are globally accepted as being an effective method to operate and maintain pipelines. This paper with reference to the three ASME guidelines highlighting the acceptable repair methods and also looks at the requirements of ISO TS 24817 and highlights how this does and does not fit into the maintenance of high pressure pipelines.
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Kumar, Amrita, Robert Hannum, Shawn J. Beard, Mamdouh M. Salama, and Will Durnie. "Condition Based Integrity Assessment of Pipelines." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29414.

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The integrity of pipelines transporting hydrocarbon is critical to economy, safety and environment. One of the leading cause of pipeline failures is 3rd party damage during excavation activities, followed by corrosion, which is becoming increasingly significant as the pipeline infrastructure ages. Current inspection techniques for corrosion monitoring may require the pipeline to be shutdown during inspection reducing overall availability and a potential loss of revenue. Structural Health Monitoring (SHM) offers the promise of a paradigm shift from schedule-driven maintenance to condition-based maintenance (CBM) of pipeline structures. Built-in sensor networks integrated with the pipeline can provide crucial information regarding the condition and damage state of the structure. Diagnostic information from sensor data can be used for prognosis of the health of the structure and facilitate informed decision processes with respect to inspection and repair, e.g., repair vs. no repair or replacement. Asset management can be performed based on the actual health and usage of structures, thereby minimizing in-service failures and maintenance costs, while maximizing reliability and readiness. This paper provides an overview on the design of a SHM system for in-situ real-time, rapid assessment of pipeline integrity using a built-in sensor network. Results of a cost-benefit study conducted for the system usage on pipeline structures will also be presented.
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Khasanov, Ilmer Yusupovich. "Maintenance Service and Repair Chamber for Pipelines in Bogs and Under Water." In SPE Russian Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/135988-ms.

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Millward, Dale. "Case Studies Highlighting Rapid Repair Methods of Pressurised Pipelines Damaged by Anchors." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78105.

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Effective pipeline design and regular maintenance can assist in prolonging the lifespan of subsea pipelines, however the presence of marine vessels can significantly increase the risk of pipeline damage from anchor hazards. As noted in the Health and Safety Executive – Guideline for Pipeline Operators on Pipeline Anchor Hazards 2009. “Anchor hazards can pose a significant threat to pipeline integrity. The consequences of damage to a pipeline could include loss of life, injury, fire, explosion, loss of buoyancy around a vessel and major pollution”. This paper will describe state of the art pipeline isolation tooling that enables safe modification of pressurised subsea pipelines. Double Block and Bleed (DBB) isolation tools have been utilised to greatly reduce downtime, increase safety and maximise unplanned maintenance, providing cost-effective solutions to the end user. High integrity isolation methods, in compliance with international subsea system intervention and isolation guidelines (IMCA D 044 / IMCA D 006), that enable piggable and unpiggable pipeline systems to be isolated before any breaking of containment, will also be explained. This paper will discuss subsea pipeline damage scenarios and repair options available to ensure a safe isolation of the pipeline and contents in the event of an incident DNV GL type approved isolation technology enables the installation of a fail-safe, DBB isolation in the event of a midline defect. The paper will conclude with case studies highlighting challenging subsea pipeline repair scenarios successfully executed, without depressurising the entire pipeline system, and in some cases without shutting down or interrupting production.
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Timashev, S. A., M. G. Malyukova, L. V. Poluian, and A. V. Bushinskaya. "Markov Description of Corrosion Defects Growth and Its Application to Reliability Based Inspection and Maintenance of Pipelines." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64546.

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The paper describes a Markov model of corrosion growth of pipe wall defects and its implementation for assessing the conditional probability of pipeline failure and optimizing pipeline repair and maintenance. This pure growth Markov model is of the continuous time, discrete states type. This model is used in conjunction with the geometrical limit state function (LSF) to assess the conditional probability of failure of pressurized pipelines when the main concern is loss of containment. It is shown how to build an empirical Markov model for the length, depth and width of defects, using field data gathered by In-line inspection (ILI) or direct assessment (DA) or by using a combination of a differential equation (DE) that describes defect parameter growth with the Monte Carlo simulation method. As a result of implementation of this approach the probability for the defect parameters being in a given state (analog of a histogram) and the transition intensities (from state to state) are easily derived for any given moment of time. This approach automatically gives an assessment of the probability of failure of a pipeline segment, as it is derived using the data from a specific pipeline length. This model also allows accounting for the pipeline failure pressure LSF. On the basis of this model an algorithm is constructed for optimizing the time of the next inspection/repair. This methodology is implemented to a specific operating pipeline which was several times inspected by a MFL inspection tool. The expected number and volume of repairs depend on the value of the ultimate permissible pipeline failure probability. Sensitivity of pipeline conditional failure rate and optimal repair time to actual growth rate is investigated. A brief description of the software that implements the described above technology is given.
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Mugford, James R. "Can Advanced Repair and Maintenance Technologies Prevent Machines From Failing?" In 1998 2nd International Pipeline Conference. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/ipc1998-2024.

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Relatively low cost, easy to use, failure prediction technologies have empowered the maintenance department and have helped to change its position within plant organizational structures. Organizations that have embraced these new technologies and maintenance philosophies have helped to transform maintenance from a cost center into a strategically important department that has a material effect on profitability and competitiveness. As might be predicted, the rapid adoption of these failure prediction technologies is reducing the number of machines that are failing and having to be repaired. With fewer machines requiring repair, equipment repair shops are having to change to adapt to this new reality. In the near future fewer repair shops will exist and the ones that remain will be characterized as being high tech organizations with engineering, redesign and advanced repair process capabilities. These “repair shops of the future” will focus their energies on redesigning and then repairing chronically troublesome machines that have had the tendency to fail on a re-occurring basis. This paper will discuss these developments and show how they are reducing, and in some cases eliminating, the catastrophic failure of industrial plant machinery.
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Bruce, William A. "Recent Changes in Code Requirements for Repair of In-Service Pipelines by Welding." In 2000 3rd International Pipeline Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/ipc2000-215.

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The API code requirements for repair of in-service pipelines by welding were recently up-dated. The 19th edition of API 1104 - Welding of Pipelines and Related Facilities - includes a new appendix (Appendix B) titled In-Service Welding, which is intended to eventually replace API 1107 - Pipeline Maintenance Welding Practices. Work is also presently underway to up-date the requirements for weld deposition repair in ASME B31.8 - Gas Transmission Systems. This paper reviews the rationale behind these changes and provides a brief summary of their primary features.
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Khasanov, Ilmer Yusupovich. "Maintenance Service and Repair Chamber for Pipelines in Bogs and Under Water (Russian)." In SPE Russian Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/135988-ru.

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Sheets, Colton, Taylor Shie, and Adam Crawford. "Thin-Wall Pipeline Repair: Evaluation of Reinforcement Systems and Internal Temperature Monitoring During Maintenance Procedures." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78647.

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There are many options available to pipeline operators when addressing anomalies or integrity threats. Repairing integrity threats requires an understanding of both the anomaly to be repaired, and the repair system itself. This can be challenging as pipeline repair systems come in a wide variety of materials, application techniques, and designs. Operators have similar challenges when performing maintenance activities on operating pipelines. Maintenance activities can take many different forms and often involve welding or other high temperature processes on the outside pipe surface. These processes can result in elevated temperatures on the inside surface of the pipeline and must be seriously considered before undertaking to ensure the safety of personnel performing the tasks and to protect the integrity of the pipeline. This study aimed to provide a greater understanding of pipeline reinforcement systems and maintenance activities as they relate specifically to thin-walled pipelines. To evaluate systems reinforcing thin-wall pipes, five different repair systems were investigated using 12.75-inch × 0.219-inch, Gr. X65 pipe that had been removed from service. The systems included a Type B steel sleeve, an epoxy-filled, interference fit, Type A steel sleeve, a hybrid steel sleeve-fiberglass based composite repair system, epoxy-filled oversized Type A steel sleeves, and a rigid coil, pre-cured, fiberglass-based composite repair system. Each system was used to reinforce a simulated 50% wall loss anomaly and was installed with the pipe samples maintained at an internal pressure equal to 33% of the pipe’s specified minimum yield strength (SMYS). The samples underwent pressure cycling and hydrostatic testing while strains in the simulated wall loss region were continually monitored. As a final step, the samples were burst tested. Monitoring of strain gages installed in the simulated wall loss anomaly allowed for comparisons to be made between the tested repair systems. It was observed that the recorded strain magnitudes and strain ranges were higher in some samples than others during testing. This allowed the systems to be ranked according to the recorded strains. Although differences were observed in the recorded strains, burst testing showed that all reinforcement systems were able to force failure to the base pipe outside of the simulated wall loss region. Maintenance procedures were also evaluated to identify those that could produce unacceptable temperatures on the inside surface of the thin-wall pipe. The maintenance procedures included installation of Type A steel sleeves (non-pressure containing), Type B steel sleeves (pressure containing), cad welds, and pin brazing cathodic protection (CP) test leads. Temperatures were monitored on the internal pipe surface using thermocouples and an infrared (IR) camera while the maintenance procedures were being performed. An internal surface temperature of 500 °F (260 °C) was set as the threshold for suitability. Monitoring of the Type B steel sleeve installation showed temperatures on the inside surface of the pipe that exceeded 1,200 °F (648 °C) when performing the circumferential weld at each end of the steel sleeve. A maximum temperature of 280 °F (137 °C) was recorded when making the longitudinal welds that included a backing strip. For the application being considered, this indicated that Type A steel sleeves (longitudinal welds only) could be installed within the required temperature limits. A maximum internal temperature of 936 °F (502 °C) was recorded during cad-welding. Pin-brazing was slightly lower, but also exceeded the 500 °F threshold. This testing confirmed that the installation of Type B steel sleeves, cad welding, or pin brazing should receive scrutiny before being performed on operating thin-wall pipelines.
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Reports on the topic "Pipelines Maintenance and repair"

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Robin Gordon, Bill Bruce, Ian Harris, Dennis Harwig, George Ritter, Bill Mohr, Matt Boring, Nancy Porter, Mike Sullivan, and Chris Neary. INTERNAL REPAIR OF PIPELINES. Office of Scientific and Technical Information (OSTI), August 2004. http://dx.doi.org/10.2172/833409.

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Robin Gordon, Bill Bruce, Ian Harris, Dennis Harwig, George Ritter, Bill Mohr, Matt Boring, Nancy Porter, Mike Sullivan, and Chris Neary. INTERNAL REPAIR OF PIPELINES. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/836716.

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Robin Gordon, Bill Bruce, Ian Harris, Dennis Harwig, Nancy Porter, Mike Sullivan, and Chris Neary. INTERNAL REPAIR OF PIPELINES. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/823502.

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Robin Gordon, Bill Bruce, Nancy Porter, Mike Sullivan, and Chris Neary. INTERNAL REPAIR OF PIPELINES. Office of Scientific and Technical Information (OSTI), May 2003. http://dx.doi.org/10.2172/824949.

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Bill Bruce, Nancy Porter, George Ritter, Matt Boring, Mark Lozev, Ian Harris, Bill Mohr, et al. INTERNAL REPAIR OF PIPELINES. Office of Scientific and Technical Information (OSTI), July 2005. http://dx.doi.org/10.2172/842389.

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Robin Gordon, Bill Bruce, Ian Harris, Dennis Harwig, George Ritter, Bill Mohr, Matt Boring, Nancy Porter, Mike Sullivan, and Chris Neary. INTERNAL REPAIR OF PIPELINES REVIEW & EVALUATION OF INTERNAL PIPELINE REPAIR TRIALS REPORT. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/834163.

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Henderson, Steven J., and Steven K. Feiner. Augmented Reality for Maintenance and Repair (ARMAR). Fort Belvoir, VA: Defense Technical Information Center, August 2007. http://dx.doi.org/10.21236/ada475554.

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Borden, Lance. B-1B Wing Shear Bearing Maintenance Repair (SD11). Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada426342.

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Borden, Lance. B-1B Wing Shear Bearing Maintenance Repair (SD11). Fort Belvoir, VA: Defense Technical Information Center, November 2004. http://dx.doi.org/10.21236/ada427948.

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O'Neil, Edward F. Repair and Maintenance of Masonry Structures: Case Histories. Fort Belvoir, VA: Defense Technical Information Center, March 1995. http://dx.doi.org/10.21236/ada294186.

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