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                    "to": "Tube sheet in pressure vessel use to filter the natural gas during mining process for many petroleum industrial applications. During this process the natural gas contains many contaminating elements with sulphur as main ingredient, which can combines with sand or other carbon elements to create harmful effects of particulate impurities like slogging, clogging, fouling on the surface of the tubesheet. These impurities creates chemical reaction with tubesheet surface material which are normally made up of steel or ceramics. During working condition, the layer of clog is deposited on the filter tubes sheet surface and tubes. This clog layer creates increase in pressure inside the vessel. Once this pressure level exceeds the acceptable value, the filter tube sheet are cleaned either weekly or monthly basis. But this cleaning process needs to stop the entire plant working till the end of complete removal of clog, this creates reduction in efficiency parameters in terms of cost. In the present work design of pressure vessel filter tubesheet is performed on the basis of working conditions. Further it has been modified as per the corrections and suggestions given by end user. Number of holes for filtration and its pattern have been calculated on basis of modified design to get effective filtration with maximum efficiency. Another solution in terms of replacing filter unit has been proposed with which is divided into two sections and after every 4 to 5 seconds other section of tubesheet receives a back pressure of one seconds and washes out the other part of filter tubes. This modification in cleaning process gives efficient results without shutting down the plant production. Since it is a regular cycle so its needs to be shut down the plant once a year for full clean-up. This modification in working cycle creates cycling loadings on the tubesheet i.e. reverse pressure for cleaning and forwards pressure for working of pressure vessel. This compressive and tensile forces creates fatigue on the tubesheet and reduction in its fatigue strength. Therefore this tubesheet needs to analyse with modified concept for reduction in stresses and improved fatigue life. Dynamic analysis has been performed to evaluate fatigue life with modified thickness with dense meshing to get effective solution with respect to change in thickness of tubesheet."
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                    "to": "“3-D finite element analysis of roller-expanded heat exchanger tubes in over-enlarged tubesheet holes”N. Merah, A. Al-Aboodi, A. N. Shuaib, Y. Al-Nassar in article; Appl Petrochem Res (2012) 1:45-52; DOI 10-1007/s 13203-011-0005-z"
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                    "value": "Tube sheet in pressure vessel use to filter the natural gas during mining process for many petroleum industrial applications. During this process the natural gas contains many contaminating elements with sulphur as main ingredient, which can combines with sand or other carbon elements to create harmful effects of particulate impurities like slogging, clogging, fouling on the surface of the tubesheet. These impurities creates chemical reaction with tubesheet surface material which are normally made up of steel or ceramics. During working condition, the layer of clog is deposited on the filter tubes sheet surface and tubes. This clog layer creates increase in pressure inside the vessel. Once this pressure level exceeds the acceptable value, the filter tube sheet are cleaned either weekly or monthly basis. But this cleaning process needs to stop the entire plant working till the end of complete removal of clog, this creates reduction in efficiency parameters in terms of cost. In the present work design of pressure vessel filter tubesheet is performed on the basis of working conditions. Further it has been modified as per the corrections and suggestions given by end user. Number of holes for filtration and its pattern have been calculated on basis of modified design to get effective filtration with maximum efficiency. Another solution in terms of replacing filter unit has been proposed with which is divided into two sections and after every 4 to 5 seconds other section of tubesheet receives a back pressure of one seconds and washes out the other part of filter tubes. This modification in cleaning process gives efficient results without shutting down the plant production. Since it is a regular cycle so its needs to be shut down the plant once a year for full clean-up. This modification in working cycle creates cycling loadings on the tubesheet i.e. reverse pressure for cleaning and forwards pressure for working of pressure vessel. This compressive and tensile forces creates fatigue on the tubesheet and reduction in its fatigue strength. Therefore this tubesheet needs to analyse with modified concept for reduction in stresses and improved fatigue life. Dynamic analysis has been performed to evaluate fatigue life with modified thickness with dense meshing to get effective solution with respect to change in thickness of tubesheet.",
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                    },
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                        "unstructured": "“Comparisen and Design and Analysis of Tubesheet Thickness by using UHX code of ASME and TEMA standerds”,Kalepesh D. Shirode, Dr. S.B. Rane, Mr. Yashawant Naikinternational journal of mechanical engineering and technology (IJMET), ISSN 0976-6359,volume-4, issue-4, july-august 2013, pp 105-117"
                    },
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                        "key": "ref5",
                        "unstructured": "“Strength Analysis of Tube to Tubesheet Joint in Shell and Tube Heat Exchanger”Kotcherla Sriharsha, Venkata Ramesh Mamilla and M.V. Mallikarjun in International Journal of Science, Engineering and Technology Research (IJSETR), Volume 1, Issue 4, October 2012, ISSN: 2278-7798"
                    },
                    {
                        "key": "ref6",
                        "unstructured": "“Finite Element Analysis of a Tubesheet with considering effective geometric properties through design methodology validated by Experiment”, Ravivarma.R, Azhagiri. Pon, International Journal of Computational Engineering Research (IJCER), ISSN (e):2250-3005, volume-4, Issue-4, April 2014"
                    },
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                        "key": "ref7",
                        "doi": "10.9790/0847",
                        "unstructured": "“An Approch to Finite element Analysis of Boiler Tubesheet”R.D. Patil, Dr. Bimlesh Kumar,American Journal Of Engineering Research(AJER),e-ISSN:2320-0847, p-ISSN:2320-0936,Volume-2, Issue-8, PP-8-11"
                    },
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                        "key": "ref8",
                        "unstructured": "“Thickness and Shape Optimization of Filter” Naik, Shweta, Global Journal of Researches in Engineering; Mechanical and Mechanics Engineering; Volume-13; Issue-1;Version-1.0;Year-2013"
                    },
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                        "key": "ref9",
                        "doi": "10.1115/pvp2013-97075",
                        "unstructured": "“ASME Section III Stress Analysis of a Heat Exchanger Tubesheet with a Misdrilled Hole and Irregular or thin ligaments”Dr. Enrique Gomez, Mr. Roberto Ruiz, Mr. Robort M. (CON) Wilson, proceedings of the ASME 2013 pressure vessels and piping conference PVP 2013 July 14-18, 2013 paris, France"
                    },
                    {
                        "key": "ref10",
                        "doi": "10.1016/j.engfailanal.2013.08.007",
                        "unstructured": "“Analysis of the Tubesheet Cracking in Slurry Oil Steam Generators”L.K. Zhu, L.J. Qiao, X.Y. Li, B.Z. Xu, W. Pan, L. Wang, Alex A. Volinsky;ELSEVIER science directory journal, engineering failure analysis 34(2013) 379-386"
                    },
                    {
                        "key": "ref11",
                        "doi": "10.1007/s13203-011-0005-z",
                        "unstructured": "“3-D finite element analysis of roller-expanded heat exchanger tubes in over-enlarged tubesheet holes”N. Merah, A. Al-Aboodi, A. N. Shuaib, Y. Al-Nassar in article; Appl Petrochem Res (2012) 1:45-52; DOI 10-1007/s 13203-011-0005-z"
                    },
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                        "key": "ref12",
                        "unstructured": "“Stress Analysis of Tubesheet in waste Heat Boiler”Minshan Liu, Qiwu Dong, XinGu, journal of pressure equipment and systems 4(2006) 48-51;Thermal Energy Engineering Research Centre of Zhengzhou University, Zhengzhou 450002, China"
                    },
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                        "unstructured": "“Optimization of Advanced filter system”R. A. Newby, G. J. Bruck, M. A. Alvin, T. E. Lippert,Westinghouse Science & Technology Centre;WorkedUnder Contract Number DE-AC26-97FT3300703 August 20, 1997-April 1998"
                    },
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                        "unstructured": "Myung Jo Jhung Jong Chull Jo 'Equivalent Material Propeties of Perforated Plate with Triangular or Square Penetration Pattern For Dynamic Analysis' [Journal]. - [s.l.] : Nuclear Engineering and Technology, 2006. - Vol. 62"
                    },
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                        "doi": "10.14429/dsj.62.927",
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                    "value": "Tube sheet in pressure vessel use to filter the natural gas during mining process for many petroleum industrial applications. During this process the natural gas contains many contaminating elements with sulphur as main ingredient, which can combines with sand or other carbon elements to create harmful effects of particulate impurities like slogging, clogging, fouling on the surface of the tubesheet. These impurities creates chemical reaction with tubesheet surface material which are normally made up of steel or ceramics. During working condition, the layer of clog is deposited on the filter tubes sheet surface and tubes. This clog layer creates increase in pressure inside the vessel. Once this pressure level exceeds the acceptable value, the filter tube sheet are cleaned either weekly or monthly basis. But this cleaning process needs to stop the entire plant working till the end of complete removal of clog, this creates reduction in efficiency parameters in terms of cost. In the present work design of pressure vessel filter tubesheet is performed on the basis of working conditions. Further it has been modified as per the corrections and suggestions given by end user. Number of holes for filtration and its pattern have been calculated on basis of modified design to get effective filtration with maximum efficiency. Another solution in terms of replacing filter unit has been proposed with which is divided into two sections and after every 4 to 5 seconds other section of tubesheet receives a back pressure of one seconds and washes out the other part of filter tubes. This modification in cleaning process gives efficient results without shutting down the plant production. Since it is a regular cycle so its needs to be shut down the plant once a year for full clean-up. This modification in working cycle creates cycling loadings on the tubesheet i.e. reverse pressure for cleaning and forwards pressure for working of pressure vessel. This compressive and tensile forces creates fatigue on the tubesheet and reduction in its fatigue strength. Therefore this tubesheet needs to analyse with modified concept for reduction in stresses and improved fatigue life. Dynamic analysis has been performed to evaluate fatigue life with modified thickness with dense meshing to get effective solution with respect to change in thickness of tubesheet.",
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                        "unstructured": "Ravikant K. Nanwatkar, Vaibhav A. Sapate, “Design and Analysis of Filter Tube Sheet of Pressure Vessel A gainst Fatigue and Fouling” IRJET 2020, vol7, Issue8, pp 581-891"
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                        "unstructured": "“Design of Perforated Plates”W.J. O'Donnell, B.F. Langer; Journal of Engineering for Industry; Trans. ASME;Volume 84 (August 1962); Paper no.61-WA-115"
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                    },
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                        "unstructured": "“Strength Analysis of Tube to Tubesheet Joint in Shell and Tube Heat Exchanger”Kotcherla Sriharsha, Venkata Ramesh Mamilla and M.V. Mallikarjun in International Journal of Science, Engineering and Technology Research (IJSETR), Volume 1, Issue 4, October 2012, ISSN: 2278-7798"
                    },
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                        "unstructured": "“Finite Element Analysis of a Tubesheet with considering effective geometric properties through design methodology validated by Experiment”, Ravivarma.R, Azhagiri. Pon, International Journal of Computational Engineering Research (IJCER), ISSN (e):2250-3005, volume-4, Issue-4, April 2014"
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                        "unstructured": "“ASME Section III Stress Analysis of a Heat Exchanger Tubesheet with a Misdrilled Hole and Irregular or thin ligaments”Dr. Enrique Gomez, Mr. Roberto Ruiz, Mr. Robort M. (CON) Wilson, proceedings of the ASME 2013 pressure vessels and piping conference PVP 2013 July 14-18, 2013 paris, France"
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                        "unstructured": "“Analysis of the Tubesheet Cracking in Slurry Oil Steam Generators”L.K. Zhu, L.J. Qiao, X.Y. Li, B.Z. Xu, W. Pan, L. Wang, Alex A. Volinsky;ELSEVIER science directory journal, engineering failure analysis 34(2013) 379-386"
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