{"id":2226,"date":"2021-07-30T09:15:03","date_gmt":"2021-07-30T09:15:03","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2226"},"modified":"2021-07-30T09:15:03","modified_gmt":"2021-07-30T09:15:03","slug":"the-corrosion-prevention-of-above-ground-pipeline","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/tr\/the-corrosion-prevention-of-above-ground-pipeline\/","title":{"rendered":"Yer \u00fcst\u00fc boru hatt\u0131n\u0131n korozyonunun \u00f6nlenmesi"},"content":{"rendered":"<p>Korozyon <a href=\"https:\/\/www.wldsteel.com\/product\/above-ground-pre-insulated-steel-pipe\/\">yer \u00fcst\u00fc boru hatlar\u0131<\/a> a\u015f\u0131nd\u0131r\u0131c\u0131 iyonlar\u0131n (Cl-, S2-), CO2&#039;nin, bakterilerin ve \u00e7\u00f6z\u00fcnm\u00fc\u015f oksijenin birle\u015fik etkisinden kaynaklan\u0131r. \u00c7\u00f6z\u00fcnm\u00fc\u015f oksijen g\u00fc\u00e7l\u00fc bir oksidand\u0131r, demir iyonlar\u0131n\u0131 \u00e7\u00f6keltecek \u015fekilde oksitlemek kolayd\u0131r ve \u00e7\u00f6z\u00fcnm\u00fc\u015f oksijen ile korozyon h\u0131z\u0131 aras\u0131ndaki ili\u015fki do\u011frusald\u0131r. S\u00fclfat indirgeyici bakteriler, sudaki s\u00fclfat indirgeyici hidrojen s\u00fclf\u00fcr\u00fcn varl\u0131\u011f\u0131na neden olacak, boru hidrojeninin neden oldu\u011fu \u00e7atlamaya ve stresli korozyon \u00e7atlamas\u0131na neden olabilir, korozyon \u00fcr\u00fcnleri demir s\u00fclf\u00fcr olu\u015fturur ve \u00e7eli\u011fin y\u00fczeyine yap\u0131\u015fmas\u0131 zay\u0131ft\u0131r, d\u00fc\u015fmesi kolayd\u0131r Katot aktif bir mikro pil ve \u00e7elik matris olu\u015fturdu\u011fundan ve \u00e7elik alt tabakada korozyon \u00fcretmeye devam etti\u011finden potansiyeldir. Saprofitik bakteriler boru hatt\u0131na yap\u0131\u015farak t\u0131kanmaya neden olur ve ayr\u0131ca oksijen konsantrasyon h\u00fccreleri \u00fcreterek boru hatt\u0131n\u0131n korozyonuna neden olur. Y\u00fczey boru hatt\u0131ndaki ya\u011f-su kar\u0131\u015f\u0131m\u0131, ayr\u0131\u015ft\u0131r\u0131ld\u0131ktan sonra kanalizasyon tank\u0131na girebilir. Bu nedenle petrol sahalar\u0131ndaki yer \u00fcst\u00fc boru hatlar\u0131 i\u00e7in korozyon \u00f6nleyici tedbirler se\u00e7ilirken koruma etkisi, in\u015faat zorlu\u011fu, maliyet ve di\u011fer fakt\u00f6rler dikkate al\u0131nmal\u0131d\u0131r. Yayg\u0131n olarak kullan\u0131lan baz\u0131 korozyon \u00f6nleyici \u00f6nlemler, petrol sahas\u0131 yer \u00fcst\u00fc boru hatlar\u0131na y\u00f6neliktir:<\/p>\n<p>&nbsp;<\/p>\n<h3>Kaplama<\/h3>\n<p>Boru hatlar\u0131nda \u00e7ok say\u0131da antikorozif kaplama vard\u0131r ve bunlar\u0131n performans\u0131 farkl\u0131d\u0131r. Uygun kaplamalar\u0131n se\u00e7ilmesi boru hatlar\u0131n\u0131n servis \u00f6mr\u00fcn\u00fc b\u00fcy\u00fck \u00f6l\u00e7\u00fcde uzatabilir. A\u015f\u0131nd\u0131r\u0131c\u0131 ortama, ta\u015f\u0131ma ortam\u0131na ve di\u011fer ko\u015fullara g\u00f6re uygun kaplamay\u0131 se\u00e7mek. D\u0131\u015f koruyucu kaplama, temel olarak organik kaplama ve metal kaplama (veya kaplama) olmak \u00fczere yer \u00fcst\u00fc \u00e7elik borunun ilk ve en \u00f6nemli bariyeridir. Organik kaplamalar epoksi re\u00e7ine, modifiye fenolik epoksi, asfalt, k\u00f6m\u00fcr katran\u0131 ve di\u011fer kaplamalara ayr\u0131labilir. Deneysel sonu\u00e7lar, kaplama y\u00fczeyinin tuzlu su ve ya\u011fa bat\u0131r\u0131ld\u0131\u011f\u0131nda kabarc\u0131klanmad\u0131\u011f\u0131n\u0131 ve kaplaman\u0131n API RP 5L2 yap\u0131\u015fma ve soyulma testinin gerekliliklerini kar\u015f\u0131lad\u0131\u011f\u0131n\u0131 ve kaplaman\u0131n iyi yap\u0131\u015fma \u00f6zelli\u011fine sahip oldu\u011funu g\u00f6stermektedir. Kaplama 250\u00b0C&#039;de 30 dakika \u0131s\u0131t\u0131l\u0131r ve daha sonra oda s\u0131cakl\u0131\u011f\u0131nda su ile so\u011futulur. Kaplama y\u00fczeyinde soyulma, \u00e7atlama, kabarc\u0131k, yap\u0131\u015fma kayb\u0131 vb. yoktur, yani kaplama iyi bir \u0131s\u0131 direncine sahiptir. E\u011filme ve a\u015f\u0131nma testlerinin yap\u0131labilmesi i\u00e7in ASTM D522, ASTM D968 ve di\u011fer standartlara g\u00f6re kaplama ayn\u0131 zamanda iyi bir e\u011filme ve a\u015f\u0131nma direncine sahiptir.<\/p>\n<p>&nbsp;<\/p>\n<h3>Katodik koruma<\/h3>\n<p>K\u00fc\u00e7\u00fck \u00e7apl\u0131 boru hatlar\u0131 i\u00e7in (boru \u00e7ap\u0131 60 mm&#039;den az) i\u00e7 y\u00fczeyin kaplanmas\u0131 kolay de\u011fildir, kaplama i\u00e7 mekanda tamamlansa bile 100%&#039;yi i\u011fne deli\u011fi olmadan elde etmek zordur. Ek olarak, i\u00e7 duvar kaplamas\u0131 kullan\u0131m s\u00fcrecinde s\u0131kl\u0131kla a\u015f\u0131nmaya maruz kal\u0131r, bu nedenle katodik koruman\u0131n kullan\u0131lmas\u0131 korozyon delinmesini etkili bir \u015fekilde azaltabilir. Kurban anot korumas\u0131, kullan\u0131m\u0131 kolay ve g\u00fc\u00e7 kayna\u011f\u0131 gerektirmeyen en eski katodik koruma y\u00f6ntemidir. \u00c7in&#039;de yayg\u0131n olarak kullan\u0131lan kurban anot malzemeleri aras\u0131nda magnezyum, \u00e7inko, al\u00fcminyum ve bunlar\u0131n ala\u015f\u0131mlar\u0131 bulunur.<\/p>\n<p>Kurban anotun \u00e7\u0131k\u0131\u015f ak\u0131m\u0131 \u015fekline ve boyutuna ba\u011fl\u0131d\u0131r. Katodik koruma potansiyeline sahip bir al\u00fcminyum ala\u015f\u0131m\u0131 olan magnezyum, \u00e7inkonun laboratuvar testinde (bak\u0131r\/bak\u0131r s\u00fclfat referans elektroduna g\u00f6re), \u00fc\u00e7 tip ala\u015f\u0131m, petrol ve benzin istasyonu katodik koruma spesifikasyonunun gerekliliklerine uygundur (katodik koruyucu potansiyel 0,85 V veya daha fazla), al\u00fcminyum ala\u015f\u0131ml\u0131 anot koruyucu etkisi de dahil olmak \u00fczere en iyisidir, magnezyum anot ve \u00e7inko ala\u015f\u0131ml\u0131 anot daha zay\u0131ft\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h3>\u00d6zel ba\u011flant\u0131<\/h3>\n<p>\u00d6zel ba\u011flant\u0131, kaplama sonras\u0131 boru kayna\u011f\u0131n\u0131n aray\u00fcz kaplamas\u0131nda neden oldu\u011fu hasar\u0131 \u00e7\u00f6zmek i\u00e7in tasarlanm\u0131\u015ft\u0131r. Y\u00f6ntemler \u015funlar\u0131 i\u00e7erir: Refrakter yal\u0131t\u0131m malzemesi ve y\u00fcksek s\u0131cakl\u0131kta kaplama kullan\u0131lmas\u0131; Veya, iyi bir \u0131s\u0131 yal\u0131t\u0131m performans\u0131na ve korozyon direncine sahip olan ve ayn\u0131 zamanda patlama ve ge\u00e7irgenlik direncinin performans\u0131ndaki ciddi de\u011fi\u015fikliklerin s\u0131cakl\u0131\u011f\u0131ndaki yeni tip y\u00fcksek s\u0131cakl\u0131kta \u0131s\u0131 yal\u0131t\u0131m seramik derzini kullan\u0131n, ancak dezavantaj\u0131, mukavemet ve dayan\u0131kl\u0131l\u0131k zay\u0131ft\u0131r. Laboratuar testleri, s\u0131cakl\u0131ktaki ciddi de\u011fi\u015fiklik ko\u015fullar\u0131 alt\u0131nda, ba\u011flant\u0131n\u0131n \u00e7atlama direncinin ve n\u00fcfuz etme direncinin gereksinimleri kar\u015f\u0131layabildi\u011fini g\u00f6stermektedir. Bununla birlikte, mukavemet ve toklu\u011fu sa\u011flamak amac\u0131yla derz duvar kal\u0131nl\u0131\u011f\u0131 \u00e7ok kal\u0131nd\u0131r ve i\u00e7 \u00e7aptaki de\u011fi\u015fiklik, normal yap\u0131y\u0131 etkileyecektir. <a href=\"https:\/\/www.wldsteel.com\/product\/above-ground-pre-insulated-steel-pipe\/\">boru hatt\u0131<\/a>. Refrakter yal\u0131t\u0131m malzemelerinin ve y\u00fcksek s\u0131cakl\u0131kta kaplama ba\u011flant\u0131lar\u0131n\u0131n kullan\u0131lmas\u0131, kullan\u0131m gereksinimlerini tam olarak kar\u015f\u0131layabilir.<\/p>\n<h2><strong>\u00a0<\/strong><\/h2>","protected":false},"excerpt":{"rendered":"<p>Yer \u00fcst\u00fc boru hatlar\u0131n\u0131n korozyonuna, a\u015f\u0131nd\u0131r\u0131c\u0131 iyonlar (Cl-, S2-), CO2, bakteriler ve \u00e7\u00f6z\u00fcnm\u00fc\u015f oksijenin birle\u015fik etkisi neden olur. \u00c7\u00f6z\u00fcnm\u00fc\u015f oksijen g\u00fc\u00e7l\u00fc bir oksidand\u0131r, demir iyonlar\u0131n\u0131 \u00e7\u00f6keltecek \u015fekilde oksitlemek kolayd\u0131r ve \u00e7\u00f6z\u00fcnm\u00fc\u015f oksijen ile korozyon h\u0131z\u0131 aras\u0131ndaki ili\u015fki do\u011frusald\u0131r. S\u00fclfat indirgeyen bakterilerin varl\u0131\u011f\u0131 [\u2026]<\/p>","protected":false},"author":1,"featured_media":2227,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/comments?post=2226"}],"version-history":[{"count":1,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2226\/revisions"}],"predecessor-version":[{"id":2228,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2226\/revisions\/2228"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media\/2227"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media?parent=2226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/categories?post=2226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/tags?post=2226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}