Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis
Established or create new ones to plan the cleaning tasks of the heat exchangers. In this work, a maintenance strategy is developed for a preheating train under the Maintenance Centered on Energy Efficiency (MCEE) methodology, where it is sought to integrate the information of the principles of the...
- Autores:
-
Fajardo, Juan
Negrette, Camilo
Yabrudy, Daniel
Barreto, Deibys
Cardona, Camilo
- Tipo de recurso:
- Fecha de publicación:
- 2023
- Institución:
- Universidad Tecnológica de Bolívar
- Repositorio:
- Repositorio Institucional UTB
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.utb.edu.co:20.500.12585/12563
- Acceso en línea:
- https://hdl.handle.net/20.500.12585/12563
- Palabra clave:
- Maintenance
Heat exchanger
Preheat train
Crude oil distillation unit
Energy systems analysis
LEMB
- Rights
- openAccess
- License
- http://purl.org/coar/access_right/c_abf2
| id |
UTB2_6ead9998365d11454205bbb341452382 |
|---|---|
| oai_identifier_str |
oai:repositorio.utb.edu.co:20.500.12585/12563 |
| network_acronym_str |
UTB2 |
| network_name_str |
Repositorio Institucional UTB |
| repository_id_str |
|
| dc.title.es_CO.fl_str_mv |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| title |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| spellingShingle |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis Maintenance Heat exchanger Preheat train Crude oil distillation unit Energy systems analysis LEMB |
| title_short |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| title_full |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| title_fullStr |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| title_full_unstemmed |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| title_sort |
Maintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysis |
| dc.creator.fl_str_mv |
Fajardo, Juan Negrette, Camilo Yabrudy, Daniel Barreto, Deibys Cardona, Camilo |
| dc.contributor.author.none.fl_str_mv |
Fajardo, Juan Negrette, Camilo Yabrudy, Daniel Barreto, Deibys Cardona, Camilo |
| dc.subject.keywords.es_CO.fl_str_mv |
Maintenance Heat exchanger Preheat train Crude oil distillation unit Energy systems analysis |
| topic |
Maintenance Heat exchanger Preheat train Crude oil distillation unit Energy systems analysis LEMB |
| dc.subject.armarc.none.fl_str_mv |
LEMB |
| description |
Established or create new ones to plan the cleaning tasks of the heat exchangers. In this work, a maintenance strategy is developed for a preheating train under the Maintenance Centered on Energy Efficiency (MCEE) methodology, where it is sought to integrate the information of the principles of the second law of thermodynamics with economic variables to use parameters. The modification of the maintenance justification parameter (J) is proposed, adding two new maintenance indicators (W and X). Each one seeks to evaluate an essential criterion for the maintenance area: economic viability, technical feasibility, and benefits, toward the other exchangers in the network after cleaning a specific component. A criticality diagram and a criticality matrix are used. The heat exchangers are grouped into subassemblies, with the leading group consisting of the key heat exchangers (KHEX), the elements of which have a significant impact on the efficiency of the preheat train. For their part, the regions are composed of components whose performance is less considerable than that of the KHEX. In total, 34 maintenance activities will be carried out, distributed among the 25 interchanges of the network. The planning of a program of cleaning activities according to the maintenance strategy based on the methodology of the MCEE establishes a substantial scientific contribution due to the almost null existence of exergetic studies applied to the management of maintenance tasks and focused mainly on the preheating of trains |
| publishDate |
2023 |
| dc.date.accessioned.none.fl_str_mv |
2023-11-03T21:19:07Z |
| dc.date.available.none.fl_str_mv |
2023-11-03T21:19:07Z |
| dc.date.issued.none.fl_str_mv |
2023-12 |
| dc.date.submitted.none.fl_str_mv |
2023-11-03 |
| dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.driver.es_CO.fl_str_mv |
info:eu-repo/semantics/article |
| dc.type.hasversion.es_CO.fl_str_mv |
info:eu-repo/semantics/draft |
| dc.type.spa.es_CO.fl_str_mv |
http://purl.org/coar/resource_type/c_6501 |
| status_str |
draft |
| dc.identifier.citation.es_CO.fl_str_mv |
ajardo, J., Negrette, C., Yabrudy, D., Barreto, D., and Cardona, C. (July 4, 2023). "Maintenance Strategy of a Preheat Train of a Crude Oil Distillation Unit Based on Exergy and Exergoeconomic Analysis." ASME. J. Energy Resour. Technol. December 2023; 145(12): 121702. https://doi.org/10.1115/1.4062713 |
| dc.identifier.uri.none.fl_str_mv |
https://hdl.handle.net/20.500.12585/12563 |
| dc.identifier.doi.none.fl_str_mv |
10.1115/1.4062713 |
| dc.identifier.instname.es_CO.fl_str_mv |
Universidad Tecnológica de Bolívar |
| dc.identifier.reponame.es_CO.fl_str_mv |
Repositorio Universidad Tecnológica de Bolívar |
| identifier_str_mv |
ajardo, J., Negrette, C., Yabrudy, D., Barreto, D., and Cardona, C. (July 4, 2023). "Maintenance Strategy of a Preheat Train of a Crude Oil Distillation Unit Based on Exergy and Exergoeconomic Analysis." ASME. J. Energy Resour. Technol. December 2023; 145(12): 121702. https://doi.org/10.1115/1.4062713 10.1115/1.4062713 Universidad Tecnológica de Bolívar Repositorio Universidad Tecnológica de Bolívar |
| url |
https://hdl.handle.net/20.500.12585/12563 |
| dc.language.iso.es_CO.fl_str_mv |
spa |
| language |
spa |
| dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
| dc.rights.accessrights.es_CO.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://purl.org/coar/access_right/c_abf2 |
| dc.format.extent.none.fl_str_mv |
12 páginas |
| dc.format.medium.none.fl_str_mv |
Pdf |
| dc.format.mimetype.es_CO.fl_str_mv |
application/pdf |
| dc.publisher.place.es_CO.fl_str_mv |
Cartagena de Indias |
| dc.publisher.sede.es_CO.fl_str_mv |
Campus Tecnológico |
| dc.publisher.discipline.es_CO.fl_str_mv |
Ingeniería Mecánica |
| dc.source.es_CO.fl_str_mv |
Journal of Energy Resources Technology |
| institution |
Universidad Tecnológica de Bolívar |
| bitstream.url.fl_str_mv |
https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/1/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/2/license.txt https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/3/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf.txt https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/4/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf.jpg |
| bitstream.checksum.fl_str_mv |
125b69973d56b5ba2771d8f874e64a8b e20ad307a1c5f3f25af9304a7a7c86b6 4deea8fb237eb1e738ca3f5f95ad6815 f780267dfd1642b71b3c5e41070e322c |
| bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 |
| repository.name.fl_str_mv |
Repositorio Institucional UTB |
| repository.mail.fl_str_mv |
repositorioutb@utb.edu.co |
| _version_ |
1812096420902076416 |
| spelling |
Fajardo, Juan5681b114-d542-428e-a5ed-8e6ceeb90db3Negrette, Camilo810c7be2-9680-4e73-9176-53f0f6904f0dYabrudy, Daniel639a65c2-686b-4e44-a772-25c7f96785afBarreto, Deibys9295bc7a-88e7-4c5c-a26a-b285014a141eCardona, Camilo91b225f9-21d6-4065-91ef-14b77611d1062023-11-03T21:19:07Z2023-11-03T21:19:07Z2023-122023-11-03ajardo, J., Negrette, C., Yabrudy, D., Barreto, D., and Cardona, C. (July 4, 2023). "Maintenance Strategy of a Preheat Train of a Crude Oil Distillation Unit Based on Exergy and Exergoeconomic Analysis." ASME. J. Energy Resour. Technol. December 2023; 145(12): 121702. https://doi.org/10.1115/1.4062713https://hdl.handle.net/20.500.12585/1256310.1115/1.4062713Universidad Tecnológica de BolívarRepositorio Universidad Tecnológica de BolívarEstablished or create new ones to plan the cleaning tasks of the heat exchangers. In this work, a maintenance strategy is developed for a preheating train under the Maintenance Centered on Energy Efficiency (MCEE) methodology, where it is sought to integrate the information of the principles of the second law of thermodynamics with economic variables to use parameters. The modification of the maintenance justification parameter (J) is proposed, adding two new maintenance indicators (W and X). Each one seeks to evaluate an essential criterion for the maintenance area: economic viability, technical feasibility, and benefits, toward the other exchangers in the network after cleaning a specific component. A criticality diagram and a criticality matrix are used. The heat exchangers are grouped into subassemblies, with the leading group consisting of the key heat exchangers (KHEX), the elements of which have a significant impact on the efficiency of the preheat train. For their part, the regions are composed of components whose performance is less considerable than that of the KHEX. In total, 34 maintenance activities will be carried out, distributed among the 25 interchanges of the network. The planning of a program of cleaning activities according to the maintenance strategy based on the methodology of the MCEE establishes a substantial scientific contribution due to the almost null existence of exergetic studies applied to the management of maintenance tasks and focused mainly on the preheating of trainsUniversidad Tecnológica de Bolívar12 páginasPdfapplication/pdfspaJournal of Energy Resources TechnologyMaintenance strategy of a preheat train of crude oil distillation unit based on exergy and exergoeconomic analysisinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/drafthttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/version/c_b1a7d7d4d402bccehttp://purl.org/coar/resource_type/c_2df8fbb1MaintenanceHeat exchangerPreheat trainCrude oil distillation unitEnergy systems analysisLEMBinfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Cartagena de IndiasCampus TecnológicoIngeniería MecánicaInvestigadoresBejan, A., Tsatsaronis, G., and Moran, M., 1995, Thermal Design and Optimization, 1st ed., John Wiley & Sons, New York.Ahmadi, P., and Dincer, I., 2018, Comprehensive Energy Systems, 1st ed., Elsevier, Ámsterdam, Netherlands, Vol. 1, pp. 340–376Ansarinasab, H., Mehrpooya, M., and Mohammadi, A., 2017, “Advanced Exergy and Exergoeconomic Analyses of a Hydrogen Liquefaction Plant Equipped With Mixed Refrigerant System,” J. Clean. Prod., 144(15), pp. 248–259.Rivero, R., 2004, “Exergy and Exergoeconomic Analysis of a Crude Oil Combined Distillation Unit,” Energy, 29(12-15), pp. 1909–1927.Niijjaawan, N., and Niijjaawan, R., 2010, “Proactive Maintenance,” Modern Approach to Maintenance in Spinning, Elsevier, New York, pp. 21–36.Tubular Exchanger Manufacturers Association, Inc, 2007, Standards of the Tubular Exchanger Manufacturers Association, 9th ed., TEMA, New York.Georgiadis, M. C., Papageorgiou, L. G., and Macchietto, S., 2000, “Optimal Cleaning Policies in Heat Exchanger Networks Under Rapid Fouling,” Ind. Eng. Chem. Res., 39(2), pp. 441–454.Zubair, S. M., Sheikh, A. K., Younas, M., and Budair, M. O., 2000, “A Risk Based Heat Exchanger Analysis Subject to Fouling: Part I: Performance Evaluation,” Energy, 25(5), pp. 427–443.Sheikh, A. K., Zubair, S. M., Younas, M., and Budair, M. O., 2000, “A Risk Based Heat Exchanger Analysis Subject to Fouling Part II: Economics of Heat Exchangers Cleaning,” Energy, 25(5), pp. 445–461.] Firdaus, N., Samat, H. A., and Mohamad, N., 2019, “Maintenance for Energy Efficiency: A Review,” IOP Conf. Ser.: Mater. Sci. Eng., 530(1), p. 012047Yabrudy, D., Fajardo, J., Sarria, B., and Cardona, C., 2020, “Efficiency Centered Maintenance for Preheat Trains of Crude Oil Distillation Units,” Front. Heat Mass Transfer (FHMT), 15(25), pp. 1–12.Fajardo, J., Negrette, C., Yabrudy, D., Sarria, B., and Cardona, C., 2021, “Advanced Exergetic Analysis of Preheat Train of a Crude Oil Distillation Unit,” Proceedings of ASME 2021 International Mechanical Engineering Congress and Exposition, 8B.Tsatsaronis, G., and Park, M.-H., 2002, “On Avoidable and Unavoidable Exergy Destructions and Investment Costs in Thermal Systems,” Energy Convers. Manag., 43(9–12), pp. 1229–1270.Bott, T. R., 1995, Fouling of Heat Exchangers, Elsevier, AmsterdamJafari Nasr, M. R., and Majidi Givi, M., 2006, “Modeling of Crude Oil Fouling in Preheat Exchangers of Refinery Distillation Units,” Appl. Therm. Eng., 26(14–15), pp. 1572–1577.Kelly, S., Tsatsaronis, G., and Morosuk, T., 2009, “Advanced Exergetic Analysis: Approaches for Splitting the Exergy Destruction Into Endogenous and Exogenous Parts,” Energy, 34(3), pp. 384–391.Pogiatzis, T., Ishiyama, E. M., Paterson, W. R., Vassiliadis, V. S., and Wilson, D. I., 2012, “Identifying Optimal Cleaning Cycles for Heat Exchangers Subject to Fouling and Ageing,” Appl. Energy, 89(1), pp. 60–66.Mehdizadeh-Fard, M., and Pourfayaz, F., 2018, “A Simple Method for Estimating the Irreversibly in Heat Exchanger Networks,” Energy, 144, pp. 633–646.Fard, M. M., and Pourfayaz, F., 2019, “Advanced Exergy Analysis of Heat Exchanger Network in a Complex Natural Gas Refinery,” J. Clean. Prod., 206, pp. 670–687.Bühler, F., Nguyen, T.-V., Jensen, J. K., Holm, F. M., and Elmegaard, B., 2018, “Energy, Exergy and Advanced Exergy Analysis of a Milk Processing Factory,” Energy, 162, pp. 576–592] Moubray, J., 2004, RCM III—Reliability Centered Maintenance, 3rd ed., Aladon LLC, North CarolinaTan, Z., Li, J., Wu, Z., Zheng, J., and He, W., 2011, “An Evaluation of Maintenance Strategy Using Risk-Based Inspection,” Safety Sci., 49(6), pp. 852– 860.Wang, L., Yang, Y., Morosuk, T., and Tsatsaronis, G., 2012, “Advanced Thermodynamic Analysis and Evaluation of a Supercritical Power Plant,” Energies, 5(6), pp. 1850–1863.] Manjunath, K., and Kaushik, S. C., 2014, “Second Law Thermodynamic Study of Heat Exchangers: A Review,” Renew. Sustain. Energy Rev., 40, pp. 348–374.Rivero, R., 2002, “Application of the Exergy Concept in the Petroleum Refining and Petrochemical Industry,” Energy Convers. Manag., 43(9–12), pp. 1199–1220.The Wall Street Journal. Natural Gas Continuous Contract, octubre de 2021. https://www.wsj.com/market-data/quotes/futures/NG00http://purl.org/coar/resource_type/c_2df8fbb1ORIGINALJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdfJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdfapplication/pdf1048841https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/1/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf125b69973d56b5ba2771d8f874e64a8bMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-83182https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/2/license.txte20ad307a1c5f3f25af9304a7a7c86b6MD52TEXTJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdf.txtJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdf.txtExtracted texttext/plain53259https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/3/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf.txt4deea8fb237eb1e738ca3f5f95ad6815MD53THUMBNAILJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdf.jpgJERT-23-1094-Maintenance strategy of a preheat train of a crude oil distillation unit based on exergy and exergoeconomic analysis.pdf.jpgGenerated Thumbnailimage/jpeg9223https://repositorio.utb.edu.co/bitstream/20.500.12585/12563/4/JERT-23-1094-Maintenance%20strategy%20of%20a%20preheat%20train%20of%20a%20crude%20oil%20distillation%20unit%20based%20on%20exergy%20and%20exergoeconomic%20analysis.pdf.jpgf780267dfd1642b71b3c5e41070e322cMD5420.500.12585/12563oai:repositorio.utb.edu.co:20.500.12585/125632023-11-04 00:22:03.243Repositorio Institucional UTBrepositorioutb@utb.edu.coQXV0b3Jpem8gKGF1dG9yaXphbW9zKSBhIGxhIEJpYmxpb3RlY2EgZGUgbGEgSW5zdGl0dWNpw7NuIHBhcmEgcXVlIGluY2x1eWEgdW5hIGNvcGlhLCBpbmRleGUgeSBkaXZ1bGd1ZSBlbiBlbCBSZXBvc2l0b3JpbyBJbnN0aXR1Y2lvbmFsLCBsYSBvYnJhIG1lbmNpb25hZGEgY29uIGVsIGZpbiBkZSBmYWNpbGl0YXIgbG9zIHByb2Nlc29zIGRlIHZpc2liaWxpZGFkIGUgaW1wYWN0byBkZSBsYSBtaXNtYSwgY29uZm9ybWUgYSBsb3MgZGVyZWNob3MgcGF0cmltb25pYWxlcyBxdWUgbWUobm9zKSBjb3JyZXNwb25kZShuKSB5IHF1ZSBpbmNsdXllbjogbGEgcmVwcm9kdWNjacOzbiwgY29tdW5pY2FjacOzbiBww7pibGljYSwgZGlzdHJpYnVjacOzbiBhbCBww7pibGljbywgdHJhbnNmb3JtYWNpw7NuLCBkZSBjb25mb3JtaWRhZCBjb24gbGEgbm9ybWF0aXZpZGFkIHZpZ2VudGUgc29icmUgZGVyZWNob3MgZGUgYXV0b3IgeSBkZXJlY2hvcyBjb25leG9zIHJlZmVyaWRvcyBlbiBhcnQuIDIsIDEyLCAzMCAobW9kaWZpY2FkbyBwb3IgZWwgYXJ0IDUgZGUgbGEgbGV5IDE1MjAvMjAxMiksIHkgNzIgZGUgbGEgbGV5IDIzIGRlIGRlIDE5ODIsIExleSA0NCBkZSAxOTkzLCBhcnQuIDQgeSAxMSBEZWNpc2nDs24gQW5kaW5hIDM1MSBkZSAxOTkzIGFydC4gMTEsIERlY3JldG8gNDYwIGRlIDE5OTUsIENpcmN1bGFyIE5vIDA2LzIwMDIgZGUgbGEgRGlyZWNjacOzbiBOYWNpb25hbCBkZSBEZXJlY2hvcyBkZSBhdXRvciwgYXJ0LiAxNSBMZXkgMTUyMCBkZSAyMDEyLCBsYSBMZXkgMTkxNSBkZSAyMDE4IHkgZGVtw6FzIG5vcm1hcyBzb2JyZSBsYSBtYXRlcmlhLgoKQWwgcmVzcGVjdG8gY29tbyBBdXRvcihlcykgbWFuaWZlc3RhbW9zIGNvbm9jZXIgcXVlOgoKLSBMYSBhdXRvcml6YWNpw7NuIGVzIGRlIGNhcsOhY3RlciBubyBleGNsdXNpdmEgeSBsaW1pdGFkYSwgZXN0byBpbXBsaWNhIHF1ZSBsYSBsaWNlbmNpYSB0aWVuZSB1bmEgdmlnZW5jaWEsIHF1ZSBubyBlcyBwZXJwZXR1YSB5IHF1ZSBlbCBhdXRvciBwdWVkZSBwdWJsaWNhciBvIGRpZnVuZGlyIHN1IG9icmEgZW4gY3VhbHF1aWVyIG90cm8gbWVkaW8sIGFzw60gY29tbyBsbGV2YXIgYSBjYWJvIGN1YWxxdWllciB0aXBvIGRlIGFjY2nDs24gc29icmUgZWwgZG9jdW1lbnRvLgoKLSBMYSBhdXRvcml6YWNpw7NuIHRlbmRyw6EgdW5hIHZpZ2VuY2lhIGRlIGNpbmNvIGHDsW9zIGEgcGFydGlyIGRlbCBtb21lbnRvIGRlIGxhIGluY2x1c2nDs24gZGUgbGEgb2JyYSBlbiBlbCByZXBvc2l0b3JpbywgcHJvcnJvZ2FibGUgaW5kZWZpbmlkYW1lbnRlIHBvciBlbCB0aWVtcG8gZGUgZHVyYWNpw7NuIGRlIGxvcyBkZXJlY2hvcyBwYXRyaW1vbmlhbGVzIGRlbCBhdXRvciB5IHBvZHLDoSBkYXJzZSBwb3IgdGVybWluYWRhIHVuYSB2ZXogZWwgYXV0b3IgbG8gbWFuaWZpZXN0ZSBwb3IgZXNjcml0byBhIGxhIGluc3RpdHVjacOzbiwgY29uIGxhIHNhbHZlZGFkIGRlIHF1ZSBsYSBvYnJhIGVzIGRpZnVuZGlkYSBnbG9iYWxtZW50ZSB5IGNvc2VjaGFkYSBwb3IgZGlmZXJlbnRlcyBidXNjYWRvcmVzIHkvbyByZXBvc2l0b3Jpb3MgZW4gSW50ZXJuZXQgbG8gcXVlIG5vIGdhcmFudGl6YSBxdWUgbGEgb2JyYSBwdWVkYSBzZXIgcmV0aXJhZGEgZGUgbWFuZXJhIGlubWVkaWF0YSBkZSBvdHJvcyBzaXN0ZW1hcyBkZSBpbmZvcm1hY2nDs24gZW4gbG9zIHF1ZSBzZSBoYXlhIGluZGV4YWRvLCBkaWZlcmVudGVzIGFsIHJlcG9zaXRvcmlvIGluc3RpdHVjaW9uYWwgZGUgbGEgSW5zdGl0dWNpw7NuLCBkZSBtYW5lcmEgcXVlIGVsIGF1dG9yKHJlcykgdGVuZHLDoW4gcXVlIHNvbGljaXRhciBsYSByZXRpcmFkYSBkZSBzdSBvYnJhIGRpcmVjdGFtZW50ZSBhIG90cm9zIHNpc3RlbWFzIGRlIGluZm9ybWFjacOzbiBkaXN0aW50b3MgYWwgZGUgbGEgSW5zdGl0dWNpw7NuIHNpIGRlc2VhIHF1ZSBzdSBvYnJhIHNlYSByZXRpcmFkYSBkZSBpbm1lZGlhdG8uCgotIExhIGF1dG9yaXphY2nDs24gZGUgcHVibGljYWNpw7NuIGNvbXByZW5kZSBlbCBmb3JtYXRvIG9yaWdpbmFsIGRlIGxhIG9icmEgeSB0b2RvcyBsb3MgZGVtw6FzIHF1ZSBzZSByZXF1aWVyYSBwYXJhIHN1IHB1YmxpY2FjacOzbiBlbiBlbCByZXBvc2l0b3Jpby4gSWd1YWxtZW50ZSwgbGEgYXV0b3JpemFjacOzbiBwZXJtaXRlIGEgbGEgaW5zdGl0dWNpw7NuIGVsIGNhbWJpbyBkZSBzb3BvcnRlIGRlIGxhIG9icmEgY29uIGZpbmVzIGRlIHByZXNlcnZhY2nDs24gKGltcHJlc28sIGVsZWN0csOzbmljbywgZGlnaXRhbCwgSW50ZXJuZXQsIGludHJhbmV0LCBvIGN1YWxxdWllciBvdHJvIGZvcm1hdG8gY29ub2NpZG8gbyBwb3IgY29ub2NlcikuCgotIExhIGF1dG9yaXphY2nDs24gZXMgZ3JhdHVpdGEgeSBzZSByZW51bmNpYSBhIHJlY2liaXIgY3VhbHF1aWVyIHJlbXVuZXJhY2nDs24gcG9yIGxvcyB1c29zIGRlIGxhIG9icmEsIGRlIGFjdWVyZG8gY29uIGxhIGxpY2VuY2lhIGVzdGFibGVjaWRhIGVuIGVzdGEgYXV0b3JpemFjacOzbi4KCi0gQWwgZmlybWFyIGVzdGEgYXV0b3JpemFjacOzbiwgc2UgbWFuaWZpZXN0YSBxdWUgbGEgb2JyYSBlcyBvcmlnaW5hbCB5IG5vIGV4aXN0ZSBlbiBlbGxhIG5pbmd1bmEgdmlvbGFjacOzbiBhIGxvcyBkZXJlY2hvcyBkZSBhdXRvciBkZSB0ZXJjZXJvcy4gRW4gY2FzbyBkZSBxdWUgZWwgdHJhYmFqbyBoYXlhIHNpZG8gZmluYW5jaWFkbyBwb3IgdGVyY2Vyb3MgZWwgbyBsb3MgYXV0b3JlcyBhc3VtZW4gbGEgcmVzcG9uc2FiaWxpZGFkIGRlbCBjdW1wbGltaWVudG8gZGUgbG9zIGFjdWVyZG9zIGVzdGFibGVjaWRvcyBzb2JyZSBsb3MgZGVyZWNob3MgcGF0cmltb25pYWxlcyBkZSBsYSBvYnJhIGNvbiBkaWNobyB0ZXJjZXJvLgoKLSBGcmVudGUgYSBjdWFscXVpZXIgcmVjbGFtYWNpw7NuIHBvciB0ZXJjZXJvcywgZWwgbyBsb3MgYXV0b3JlcyBzZXLDoW4gcmVzcG9uc2FibGVzLCBlbiBuaW5nw7puIGNhc28gbGEgcmVzcG9uc2FiaWxpZGFkIHNlcsOhIGFzdW1pZGEgcG9yIGxhIGluc3RpdHVjacOzbi4KCi0gQ29uIGxhIGF1dG9yaXphY2nDs24sIGxhIGluc3RpdHVjacOzbiBwdWVkZSBkaWZ1bmRpciBsYSBvYnJhIGVuIMOtbmRpY2VzLCBidXNjYWRvcmVzIHkgb3Ryb3Mgc2lzdGVtYXMgZGUgaW5mb3JtYWNpw7NuIHF1ZSBmYXZvcmV6Y2FuIHN1IHZpc2liaWxpZGFkCgo= |