{"id":64,"count":0,"description":"<div class=\"chapo\">As with port infrastructures, naval constructions present corrosion pathologies related to the different \u2018marine environments\u2019 encountered by the various parts. Thus, the under works and upper works of ships are inspected according to a rigorous protocol with regard to the environmental conditions, materials and the protection systems employed (passive protection or active protection).<\/div>\r\n<div><\/div>\r\n<h2>On-site diagnostics and expertise<\/h2>\r\n<ul>\r\n \t<li><strong>Visual and photographic inspections<\/strong> : examination of corrosion pathologies, realisation of surveys in collaboration with diving teams.<\/li>\r\n \t<li><strong>Non-destructive measurements<\/strong> (ultrasound and acoustic emission) : measurement of the thickness of the residual metal, measurement of paint thickness, detection and mapping of localised corrosion, real-time monitoring of corrosion.<\/li>\r\n \t<li><strong>Electrochemical measurements<\/strong> : measurement and monitoring of the corrosion potential of submerged structures, measurement of the corrosion rate.<\/li>\r\n \t<li><strong>Control of cathodic protection systems<\/strong> by impressed current or by galvanic anodes (personnel certified by AFNOR, land and seawater sectors, levels 1 and 2).<\/li>\r\n \t<li><strong>Physico-chemical measurements<\/strong> : measurement of temperature, pH, concentration of dissolved oxygen, conductivity and salinity.<\/li>\r\n \t<li><strong>Sampling for chemical analysis<\/strong> (metal composition, corrosion products) and for mechanical testing (hardness, tensile strength and fatigue resistance).<\/li>\r\n<\/ul>\r\n<h2>Laboratory analysis<\/h2>\r\n<strong>In collaboration with the <a href=\"http:\/\/lerm.fr\">LERM<\/a> in Arles<\/strong>\r\n<ul>\r\n \t<li><strong>Microstructure and metallographic analysis<\/strong> : sample preparation, polishing, chemical etching, examination by stereoscopic microscope and by optical and electron microscopy.<\/li>\r\n \t<li><strong>Characterisation of metals<\/strong> : spark spectrometry, X-ray fluorescence, mechanical testing, weldability studies.<\/li>\r\n \t<li><strong>Chemical characterisation of corrosions products<\/strong> : X-ray adsorption spectrometry, X-ray diffraction, analysis of trace elements by ICP.<\/li>\r\n \t<li><strong>Electrochemical measurements<\/strong> : polarisation curves, impedancemetry, polarisation resistance (corrosion rate).<\/li>\r\n<\/ul>\r\n<h2>Study \/ synthesis<\/h2>\r\n<ul>\r\n \t<li><strong>Studies<\/strong> : Recommendations, assistance with drafting specific technical clauses, recommendations concerning protective coatings (personnel certified anticorrosion inspector ACQPA\/FROSIO Level III), dimensioning of cathodic protection systems using impressed currents or galvanic anodes (personnel certified by AFNOR, land and seawater sectors level 3, cement level 2).<\/li>\r\n \t<li><strong>Synthesis<\/strong> : intervention reports, summary notes, bibliographic studies, scientific and technical publications.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_2233\" align=\"aligncenter\" width=\"1024\"]<img class=\"size-large wp-image-2233\" src=\"https:\/\/a-corros.fr\/wp-content\/uploads\/2019\/03\/IMG_0763-1024x768.jpg\" alt=\"\" width=\"1024\" height=\"768\" \/> Example of cathodic protection with anodes on a boat hull[\/caption]","link":"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/","name":"Naval constructions","slug":"naval_constructions","taxonomy":"pole","parent":61,"meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Naval constructions Archives - A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Naval constructions Archives - A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines\" \/>\n<meta property=\"og:description\" content=\"As with port infrastructures, naval constructions present corrosion pathologies related to the different \u2018marine environments\u2019 encountered by the various parts. Thus, the under works and upper works of ships are inspected according to a rigorous protocol with regard to the environmental conditions, materials and the protection systems employed (passive protection or active protection). On-site diagnostics and expertise Visual and photographic inspections : examination of corrosion pathologies, realisation of surveys in collaboration with diving teams. Non-destructive measurements (ultrasound and acoustic emission) : measurement of the thickness of the residual metal, measurement of paint thickness, detection and mapping of localised corrosion, real-time monitoring of corrosion. Electrochemical measurements : measurement and monitoring of the corrosion potential of submerged structures, measurement of the corrosion rate. Control of cathodic protection systems by impressed current or by galvanic anodes (personnel certified by AFNOR, land and seawater sectors, levels 1 and 2). Physico-chemical measurements : measurement of temperature, pH, concentration of dissolved oxygen, conductivity and salinity. Sampling for chemical analysis (metal composition, corrosion products) and for mechanical testing (hardness, tensile strength and fatigue resistance). Laboratory analysis In collaboration with the LERM in Arles Microstructure and metallographic analysis : sample preparation, polishing, chemical etching, examination by stereoscopic microscope and by optical and electron microscopy. Characterisation of metals : spark spectrometry, X-ray fluorescence, mechanical testing, weldability studies. Chemical characterisation of corrosions products : X-ray adsorption spectrometry, X-ray diffraction, analysis of trace elements by ICP. Electrochemical measurements : polarisation curves, impedancemetry, polarisation resistance (corrosion rate). Study \/ synthesis Studies : Recommendations, assistance with drafting specific technical clauses, recommendations concerning protective coatings (personnel certified anticorrosion inspector ACQPA\/FROSIO Level III), dimensioning of cathodic protection systems using impressed currents or galvanic anodes (personnel certified by AFNOR, land and seawater sectors level 3, cement level 2). Synthesis : intervention reports, summary notes, bibliographic studies, scientific and technical publications. Example of cathodic protection with anodes on a boat hull\" \/>\n<meta property=\"og:url\" content=\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/\" \/>\n<meta property=\"og:site_name\" content=\"A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines\" \/>\n<meta property=\"og:image\" content=\"https:\/\/a-corros.fr\/wp-content\/uploads\/2019\/03\/IMG_0763-1024x768.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/\",\"url\":\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/\",\"name\":\"Naval constructions Archives - A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines\",\"isPartOf\":{\"@id\":\"https:\/\/a-corros.fr\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/#breadcrumb\"},\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/a-corros.fr\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Industrial Division\",\"item\":\"https:\/\/a-corros.fr\/en\/division\/industrial_division\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Naval constructions\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/a-corros.fr\/#website\",\"url\":\"https:\/\/a-corros.fr\/\",\"name\":\"A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines\",\"description\":\"Diagnostic et expertise en corrosion et conservation des patrimoines\",\"publisher\":{\"@id\":\"https:\/\/a-corros.fr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/a-corros.fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/a-corros.fr\/#organization\",\"name\":\"A-corros\",\"url\":\"https:\/\/a-corros.fr\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/a-corros.fr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/a-corros.fr\/wp-content\/uploads\/2019\/04\/A-CORROS-.jpg\",\"contentUrl\":\"https:\/\/a-corros.fr\/wp-content\/uploads\/2019\/04\/A-CORROS-.jpg\",\"width\":650,\"height\":129,\"caption\":\"A-corros\"},\"image\":{\"@id\":\"https:\/\/a-corros.fr\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Naval constructions Archives - A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/a-corros.fr\/en\/division\/naval_constructions\/","og_locale":"en_US","og_type":"article","og_title":"Naval constructions Archives - A-Corros : diagnostic et expertise en corrosion et conservation des patrimoines","og_description":"As with port infrastructures, naval constructions present corrosion pathologies related to the different \u2018marine environments\u2019 encountered by the various parts. Thus, the under works and upper works of ships are inspected according to a rigorous protocol with regard to the environmental conditions, materials and the protection systems employed (passive protection or active protection). On-site diagnostics and expertise Visual and photographic inspections : examination of corrosion pathologies, realisation of surveys in collaboration with diving teams. Non-destructive measurements (ultrasound and acoustic emission) : measurement of the thickness of the residual metal, measurement of paint thickness, detection and mapping of localised corrosion, real-time monitoring of corrosion. Electrochemical measurements : measurement and monitoring of the corrosion potential of submerged structures, measurement of the corrosion rate. Control of cathodic protection systems by impressed current or by galvanic anodes (personnel certified by AFNOR, land and seawater sectors, levels 1 and 2). Physico-chemical measurements : measurement of temperature, pH, concentration of dissolved oxygen, conductivity and salinity. Sampling for chemical analysis (metal composition, corrosion products) and for mechanical testing (hardness, tensile strength and fatigue resistance). Laboratory analysis In collaboration with the LERM in Arles Microstructure and metallographic analysis : sample preparation, polishing, chemical etching, examination by stereoscopic microscope and by optical and electron microscopy. Characterisation of metals : spark spectrometry, X-ray fluorescence, mechanical testing, weldability studies. Chemical characterisation of corrosions products : X-ray adsorption spectrometry, X-ray diffraction, analysis of trace elements by ICP. Electrochemical measurements : polarisation curves, impedancemetry, polarisation resistance (corrosion rate). Study \/ synthesis Studies : Recommendations, assistance with drafting specific technical clauses, recommendations concerning protective coatings (personnel certified anticorrosion inspector ACQPA\/FROSIO Level III), dimensioning of cathodic protection systems using impressed currents or galvanic anodes (personnel certified by AFNOR, land and seawater sectors level 3, cement level 2). Synthesis : intervention reports, summary notes, bibliographic studies, scientific and technical publications. 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