CINXE.COM
Just a moment...
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9135caf59a525fe4',cH: 'BxLvnbAv2MUkmGnucGOUqf0ei.XHM1w6TTfBm.I0XHM-1739795469-1.2.1.1-tLe0X7sdaq7AXXdIJw0ugLXpzPVL3XZ1iyI9yw2V62ID63oPRoiTddwgwCjcALW_',cUPMDTk: "\/abstracts\/search?q=plan%20for%20repair%20and%20preventive%20maintenance&__cf_chl_tk=FuhPrwlf4Rv0AjOM9CITGKHaBI_hMh7mHXkxQsv9rNU-1739795469-1.0.1.1-dd_RGhwKnhzVvIXT9uNfsIhjHrVJ0kOSFFibY_pLlq4",cFPWv: 'b',cITimeS: '1739795469',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=plan%20for%20repair%20and%20preventive%20maintenance&__cf_chl_f_tk=FuhPrwlf4Rv0AjOM9CITGKHaBI_hMh7mHXkxQsv9rNU-1739795469-1.0.1.1-dd_RGhwKnhzVvIXT9uNfsIhjHrVJ0kOSFFibY_pLlq4",md: "YbSWvU4CWS2C3sSXpyi70j5Qpa4KFRRIYaSFLEmcNcg-1739795469-1.2.1.1-PVEvdgYluRY2AgGKHZcTuCbcB7gDguoORSmxbynjYDonjAUbLRz0apRjCygE89boRQMJHUbkHpLmIv.vOKIluJtZMYjTVFDbnXwEgSEw.QJ2bZ5zA8LosNbcJuqh1ZI1g1TpoKdq6kJCRPYH8y6A2SbFPMwhxFHtpZQIZZ0zZjqaoIvzfFnbPsDOrKRwDOxYmOk4jmPu8Tw5O8AzVBQjCwiPRn6ZiWegGqHzLbNlJe4khkTHmSlCejwG7Pr6PKpMjjA4pKzHKwUebJKIgUmjj01reSIWC7YrPvdmoRoplruP9z8N4HgB.fAl0Z5HywKSehO..zH5LLYPuuGIaOIaBDp7rZYPjXqtEoowyPu6QazlRq7vlHOMQ0nP8JT4p_t2GKt8L.g12rkNsJPmYkBFDQQlJbIhfR33GY6AZsGsrlHfb0V4L7Uc8WTcl7HC1RCegZBm0VCT2VLWfjc9aoUt2ODQ4BlWFuTSI5a9r6NIh2051ZrPfaxIMbemiPgdXQ6z3lk.FVyWyq7rPI_tSEzIdZ5UJ0N8bY1k.SR0g_XQuZgZnhybvkT75Rh3KumMiIS9H4FVMEhczfiuWWZmcz4csq96YLwRAcdJa.n7pPhsINC2covu.6KesEY9Nff65M99J.9_8D9weF_4EYOKcslEalHsR5Sd6Rkjc7G0tUD6KnPh0nhU5WQFKrS_BmDC8X5UjRRYZt0DWsAV_jgFgyr5DD1UPjfsKosxha.Z0XOTnDwZCfjREHzm2F_wRK4IxepyzrLEBoGqN1z3FqxloOyvC4xNYu90w3u.gjMm4uzb_mY75yIKPX1.n_XVjcsuPqo7qV90mooIuh3aQUPJ2y_7h.jHDlqR_ZlNHDFYvKo0xege35.y6m5AEKmusF28ryjCWpL46NqX9myqD1SWsYLHxJ_.cQz2H2HKdeQ3lrQ8mRiYcd5P8sYGvDtAfII016scJKpWmrGAMWIWLpkA_PE7Pi13lV1guDIiao_qX_ph5YHyLd.ntj.0QnPMyd6a5wcRlhPNQdGtSu8EzewsPGd6bz_IzOvw6catTHcilqB6q2SOdYKc2YCzP9u6QrO4taptzxKjkKgSuUhJBHNoCfj9sUQQ.rCMb8.gCyCair0VspGwPQfn6URcmIV6wceHdng1I4Tr_74kCUpHB2ujrhnBI1USJzwtjBKSCeKTEM7Nb1a7z5D9dydR5zGTZWYclTMCLg2XbGQhaMJunv50aV7c9mGerdTk2FOwm9YKbzwwU_jnFDsPz69XtRCJ8VCLfIHfYUJWJWlMcqoPpElJsifMOF5nvxMo_t6E424glE_VJMqYn6p29U5XxWdNipy47HVOenzlfOPsqbcn.UmavBuwoTg_vCRfy1EzyRisbD5ST49grfGziCbwqZ6UWPy.cdHr0PBn4Zx0fhwyMMcMdaLZ0F0VbCh3KzOeRvSq2SkpZx1BIEJzbjzc_p5pt.169fUNJOuW5L0zxx2bf0F8ev906Eks3d5_dzRJ5JLL.hg5WrIDiJ6Lu6lRKCLLMMBAhyqAwMktz_EgbM6GE1osvIp4YSEsFFW2bCK6Lrs98OAnFRVyY7OOLC7Dc5hWSo5E3HkcsRHVP1HVzmefzn8wWnLbAekjYb.he8yDZhmpZInsCAifpkRF254l1CwcNvqdNPKaEQhn1gkO9pgAbV4cDQ4jS7nT5w4WgDjokdRMCtaVQZQvAmEg4_0F_sd5JAg3U8S4VH3wkYZAVD0XJAgtL1MRR.RLov4DmJPrCHvNdCC9vqNQaO6sX8ymEKg_VJFY86nTewf379o6vdMADjSytYPhDlZaf.4XOzGR9BYnHN5jjOJR40VWME19WjCcTVksB7qfZ4804JO80pF22r6oIPW5BHpoo2ByAbdUll0acc3BQUhp2GVZx0gdZvuOIHMLDCBa0MGqCCpRrNa1f0fhdB84rgdqT8RU23ie70fcNDgcCeJGNVNCGMe6UifmyToP55OzpYMcLQTiuE78QXHScgqklF4Gre8VxrtKZAJjj_g_wSiAN1QbaV7tK.oot.fZvPqC",mdrd: "Q4ADWC5EPZLYiUURWUIRwU0B.6dbvL42TvEumzenNhw-1739795469-1.2.1.1-g1PQ6hxNBebt3OsRboreixOa366HAeDXabo.hBpGcW8EXJO1e7oZlQ7V5iBYAnR0HX7mopFlR_CQvQVqseN7Tyh1548ftxMGyaR7Y971A3fvZEmAnEqlG83HvlXvTuFcLBpXUpvEn8Gscn.Ot_lWd92A8H0wBlnM7WWvMeyY6.xfD37UJG_wUM2NAmqjKdaReKH9FDBXj7g.PQf.7dTmi9bKoWZx6CLi32fv6wa_2xejKCgpI_e1oMQt88wJdlSCjFuxdQht4vxnH.ADnGfVFrRQAqUXRo09d5.pabp4AckNf_cGw.GcLCx6uMwvXNd86Ss.R.TJtqHmAfuMomu5yGn6bTAG9ZF4pRXws93vouBWblv3QXWTeUBSP9dCNKLI4HKJ.R1TpV7SlegyZkAX_eCb80sEjP2_6D4EOk8FsaoScH6mGSlElgcbkf_Y6ZS6zI2BIxv82xK3gV9aYp3MzkNt1Jce39BbjoCQuUeV8vh8dCkCLE7Evk5EuaKl.hxdfh0H95rC4ExCYMj4wXpCEYTu4asM4t37GbUM6BMnNL1c3LnipPEyDGPePczn4bRVDzTY5sa9TKb6GVNKsxuGmnlMvid4ErF8r4jl3gBM0qvFNs3sTIYVoE2H.yidsZnIf5G6DwV0bwcihk_Ewlvh_18CjG5iJY97RPXtas_rKwd5RA4SDcdLpuWlHt2Qd5pFaUcJqAxtpS58tOl6ciVPJWvmCn.pqLp_kPdXQ2oJx6U8oplW_C7OXuVuI2riz_BHRKIjZFgGsA08Qg2fPvXrklml4qJ_s1EnFVkrJjDANiVL0pcp8mPrZdaOdHSm60ro2ZUV_oGTjhExJEfAckaUHLXODovl5pBpjGBVKEY3.HgLURwWHGOI8nPfwItqVtvzOiz2_fiONuvVRVJ4WkT0OI6CXIvBZfDT1ZIf8XrpDKwEjLOlpj_a9m8S9kOkGR.05vrS6kgL7QHGeasEWfyb31yvAqYK265MtbVC45XlDk4jY80_UqKbFg5Tw_jL_rqsAJY4nL3C7YupyIZ5xtAzTFzIAbhLrT.6CrbT7bLSGwQAnj6o2wMn9zOyThQkl9CiPSiOmWHAWEJRw8Ev9MwjhhC25NIQje.WFtyQR827EqurTO5WR8AZqKfgZE5lFp26jU0KF6Fw2egZqgRIosiVGg.f1OMRGM5030wPehJVhSXgXbryGoc5TVZfP3nnbTlXuZGV6E.9oVFUh2tMWJNBOJH6x05STBWUMhX772sIrhr_utLVagyybWdituGh7yt8jFfKu.zofku8fbHif28i8WSgWXdKxtGbmZn6GX89jW6lI0YOHh2XilIXhFymPJ3ZF_ybjCe5F9vmEUGjVJvXpSPvc1XtEHAr05d9YL.Imw38JIc9s39fcVVhiuxLcgJbg67fGQWGp7vSl4anzVkvNEM2P5F1n0RPGeF_l8KXAuPFoIr1MgOaBXCkxoxk7HjwloqMWNFSgsM0lN1_cnmVJNmOEDwmKWQwIKdU8ruFZ_DsRHLhUO9Ngtrm_M5FV4sdM.O0rIG7UEo1osHcKCVqyXx4AIDHr2jGDvmVoDXJdkYpL_rRfg.hYvLs8VlPBZafBTKF_kZWyJ4RJQ6183FOMeKqYPHcAZX46FHpqTwDkI9G5EQJ4LSU5ROoxH5hI1SLdD5xVfott1nXIcbdD.4r0k220Ru26mGGgbw_Ie_UNWogB39gmlDDdN5vA5qcIUfjVIaN7hWBDbC.LuiXnV_VnxDJuDCs3n5DeiSOueDlJCE15SfxGJ38_3jKaS_b.s9PID.f3yrCU1HK.iwVBSDgW00yQhj3txI_BfoojRp09K64HFR0mkXiH5poC1OCZCDUt9mNr.xTifWx6_O9jTy2WG8dbLSNo7UoPp9f2bjY6dGKNDYbVm1dK5.qutjhtdqZXQHXN4cek9lvRNpoykRDm0QaMbIrRzolX0jTvbpRGCzjh9g8SoTJEG2ZzMkHBs84"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9135caf59a525fe4';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=plan%20for%20repair%20and%20preventive%20maintenance&__cf_chl_rt_tk=FuhPrwlf4Rv0AjOM9CITGKHaBI_hMh7mHXkxQsv9rNU-1739795469-1.0.1.1-dd_RGhwKnhzVvIXT9uNfsIhjHrVJ0kOSFFibY_pLlq4" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>