{"id":2092,"date":"2023-05-17T03:58:57","date_gmt":"2023-05-17T03:58:57","guid":{"rendered":"https:\/\/3.212.105.250\/?p=2092"},"modified":"2025-07-26T16:35:33","modified_gmt":"2025-07-26T22:35:33","slug":"4-methodes-dessai-de-la-protection-cathodique","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/05\/17\/4-methodes-dessai-de-la-protection-cathodique\/","title":{"rendered":"4 M\u00e9thodes d'essai de protection cathodique"},"content":{"rendered":"<p>La corrosion d'une canalisation est une r\u00e9action \u00e9lectrochimique entre le m\u00e9tal de la canalisation et un mat\u00e9riau \u00e9lectrolytique, g\u00e9n\u00e9ralement le sol. La protection cathodique est con\u00e7ue pour emp\u00eacher cette r\u00e9action de se produire afin de maintenir l'int\u00e9grit\u00e9 de la canalisation.<\/p>\n<p>Toutefois, les syst\u00e8mes de protection cathodique doivent \u00eatre v\u00e9rifi\u00e9s r\u00e9guli\u00e8rement \u00e0 l'aide de diverses m\u00e9thodes d'essai afin de s'assurer qu'ils prot\u00e8gent toujours les pipelines. Pour en savoir plus sur les <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2021\/05\/06\/les-differentes-methodes-danalyse-des-sols\/'>les m\u00e9thodes d'essai<\/a> utilis\u00e9s par les sp\u00e9cialistes pour maintenir votre pipeline propre et fonctionnel.<\/p>\n<h2>Sorties du redresseur<\/h2>\n<p>Les syst\u00e8mes de protection cathodique \u00e0 courant impos\u00e9 (ICCP) utilisent des redresseurs pour convertir le courant alternatif (CA) en courant continu (CC) afin de pr\u00e9venir la corrosion. Lorsqu'un\u00a0<a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/domaines-de-consultation\/corrosion\/etudes-de-potentiel-de-protection-cathodique\/\" target=\"_blank\" rel=\"noopener\">sp\u00e9cialiste de la protection cathodique<\/a>\u00a0arrive pour tester votre syst\u00e8me, il utilisera un voltm\u00e8tre pour mesurer la sortie de ces redresseurs. Si la sortie a besoin d'\u00eatre ajust\u00e9e pour optimiser la <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2024\/09\/30\/mise-en-service-de-la-protection-cathodique-sur-votre-chantier\/'>la protection cathodique,<\/a> le sp\u00e9cialiste peut effectuer des ajustements avec des r\u00e9glages de tarauds fins ou grossiers.<\/p>\n<h2>Enqu\u00eate sur le potentiel des intervalles rapproch\u00e9s (CIPS)<\/h2>\n<p>Si certaines parties de votre canalisation ne sont pas suffisamment prot\u00e9g\u00e9es, le mode d'essai CIPS permettra de localiser ces zones. Le testeur place des \u00e9lectrodes de r\u00e9f\u00e9rence \u00e0 intervalles de cinq pieds le long de la canalisation ; pendant ce temps, la sortie de chaque redresseur est synchronis\u00e9e pour alterner entre ses r\u00e9glages de marche et d'arr\u00eat. Les <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/08\/31\/limportance-des-essais-de-corrosion\/'>Un sp\u00e9cialiste des essais mesure la corrosion des tuyaux dans le sol<\/a> \u00e0 chaque intervalle \u00e0 l'aide d'un voltm\u00e8tre \u00e0 haute imp\u00e9dance.<\/p>\n<h2>Sortie de courant de l'anode galvanique<\/h2>\n<p>Pour conna\u00eetre l'\u00e9tat de l'anode, les experts en essais de protection cathodique utilisent les \u00e9l\u00e9ments suivants\u00a0<a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/02\/17\/5-types-dequipements-dessai-de-protection-cathodique\/\" target=\"_blank\" rel=\"noopener\">un voltm\u00e8tre<\/a>\u00a0pour mesurer le potentiel en circuit ouvert de l'anode. Au fur et \u00e0 mesure que l'anode se consume, son potentiel de circuit ouvert se d\u00e9place dans le sens positif.<\/p>\n<h2>Enqu\u00eate sur les interf\u00e9rences AC<\/h2>\n<p>Votre pipeline est-il situ\u00e9 \u00e0 proximit\u00e9 d'une ligne \u00e9lectrique \u00e0 haute tension ? Si c'est le cas, vous devrez faire tester p\u00e9riodiquement le syst\u00e8me de protection cathodique de votre pipeline pour vous assurer que le courant alternatif ne contribue pas \u00e0 la corrosion ou aux probl\u00e8mes de s\u00e9curit\u00e9. Les sp\u00e9cialistes des essais utilisent un voltm\u00e8tre \u00e0 haute imp\u00e9dance et une demi-cellule de sulfate de cuivre comme r\u00e9f\u00e9rence. Si leurs relev\u00e9s indiquent une interf\u00e9rence avec le courant alternatif, ils peuvent recommander l'\u00e9quipement d'att\u00e9nuation appropri\u00e9.<\/p>\n<p>Afin de maintenir le syst\u00e8me de protection cathodique de votre canalisation en parfait \u00e9tat de fonctionnement, faites-le tester int\u00e9gralement au moins une fois par an. Si des redresseurs sont pr\u00e9sents le long de votre pipeline, faites-les tester tous les deux mois par des experts en protection cathodique qui utilisent des m\u00e9thodes d'essai appropri\u00e9es. Les connaissances acquises gr\u00e2ce \u00e0 ces tests peuvent vous aider \u00e0 optimiser votre syst\u00e8me de protection cathodique et \u00e0 prot\u00e9ger votre pipeline contre la corrosion.<\/p>","protected":false},"excerpt":{"rendered":"<p>Corrosion on a pipeline is an electrochemical reaction between the metal of the pipes and an electrolytic material, usually soil. Cathodic protection is designed to prevent that reaction from occurring to maintain the integrity of the pipeline. However, cathodic protection systems must be checked regularly using a variety of testing methodologies to ensure they are [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":2078,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_mbp_gutenberg_autopost":false,"_pgmb_is_evergreen":true,"_pgmb_ap_template_id":0,"iawp_total_views":133,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2092","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"Corrosion on a pipeline is an electrochemical reaction between the metal of the pipes and an electrolytic material, usually soil. 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