Bad vibes / Peter Bock in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 2 (02/2016)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 2 (02/2016) . - p. 55-63 Titre : Bad vibes : Using coatings to eliminate vortex-induced vibration of riser strings on deep-water offshore structures Type de document : texte imprimé Auteurs : Peter Bock, Auteur Année de publication : 2016 Article en page(s) : p. 55-63 Langues : Américain (ame) Catégories : Amortissement (mécanique) Fluoropolymères Revêtements antisalissures Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Structures offshore -- Revêtements protecteurs Vibrations (mécanique) Index. décimale : 667.9 Revêtements et enduits Résumé : Coatings prevent offshore VIV damage - Shallow-water production platforms in the Gulf of Mexico actually stand on legs reaching to the seafloor, where they are secured by piles into the seabed. The riser piping is usually near the center of the structure and is held rigidly by its own strength and by the surrounding fixed leg structure. Deepwater structures can be actuel floating platforms and are held exactly in place by anchors or other methods. The riser pipe string may be the only solid direct connection between the seafloor and the floating production platform. Movement of the platform from wave action or tidal forces is compensated by flexible joint connections in the riser string. But when the rigid support of legs on the seafloor is removed and the length of the riser string increases for structures in deep water, a new insidious force comes into play —VIV, or vortex-induced vibrations, which can crack joints in the riser string or rupture the riser pipe itself, causing a potentially disastrous oil spill. Note de contenu : - What are VIV ? - The glitch - A solution through coatings - Test application Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25630 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17889	-	Périodique	Bibliothèque principale	Documentaires	Disponible

From pig fat to polysiloxane / Peter Bock in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 10 (10/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 10 (10/2017) . - p. 28-37 Titre : From pig fat to polysiloxane : A brief history of elevated temperature coatings for exposed and CUI service Type de document : texte imprimé Auteurs : Peter Bock, Auteur ; James C. Reynolds, Auteur Année de publication : 2017 Article en page(s) : p. 28-37 Langues : Américain (ame) Catégories : Essais d'adhésion Essais dynamiques Résistance thermique Revêtement émail:Peinture-émail Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : This article chronicles the evolution of elevated temperature coatings from lard used to season cast-iron skillets through a third-generation, 100-percent inorganic, single-component and ambient curing version that gets hard enough without heating for equipment to be painted in the afternoon and handled, strapped down and shipped without damage the next morning. Note de contenu : - Limitation of organic binder resins - Hybrids and pure inorganic coatings for steelwork - Introduction of polysiloxane hybrid coatings - Second-generation polysiloxane - Third-generation polysiloxane coatings - Spray-on insulation for elevated temperatures - Polysiloxane spray-on insulation - Back to granny TABLES : 1. Basic Characteristics of Elevated-Temperature Coatings FIGURES : 1. Results from laboratory testing of the hardness of ambient dried polysiloxane coatings, per ASTM D3363/ISO 15184 - 2. Thin-film silicone aluminum enamel over inorganic zinc, failing due to excessively thick application of the silicone enamel - 3. Results from laboratory testing of pull-off adhesion of ambient dried polysiloxane coatings, per ASTM D4541/ISO 4624 - 4. Results from 4,000-hour laboratory testing of hot-water immersion for ambient dried polysiloxane coatings, per ASTM D820/ISO 2812 - 5. Acrylic waterborne spray-on insulation failing after less than three years’ service in U.S. Gulf Coast exterior exposure - 6. Typical transportation damage on ambient-dried second-generation (IMM) polysiloxane coatings - 7. Steelwork protected with red-lead primer after 18 years of CUI service; there is rust scale, but no pitting En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6144 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29508 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
19362	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Protecting offshore platforms in the Gulf of Mexico : shortcuts = potential havoc / Peter Bock in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 7 (07/2016)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 7 (07/2016) . - p. 18-20 Titre : Protecting offshore platforms in the Gulf of Mexico : shortcuts = potential havoc Type de document : texte imprimé Auteurs : Peter Bock, Auteur Année de publication : 2016 Article en page(s) : p. 18-20 Langues : Américain (ame) Catégories : Analyse des défaillances (fiabilité) Métaux -- Revêtements protecteurs Qualité -- Contrôle Revêtements -- Détérioration:Peinture -- Détérioration Revêtements protecteurs -- Détérioration Structures offshore -- Entretien et réparations Structures offshore -- Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : Maintenance painting on offshore oil production structures in the Gulf of Mexico presents extremely severe environmental challenges, both for the contractor’s surface preparation and coating application, and for the service life of the applied coating system. Very high costs, limited space, poor working conditions and the constant threat of delays from bad weather all conspire against getting a project done exactly according to specification, SSPC-PA 2 and best painting practice. But because of the severity of the environment, minor shortcuts that might not even be noticed long-term in an onshore mild environment project can wreak havoc on an offshore structure. Note de contenu : - Fig. 1. Bare, rusty steel in failed areas showed different levels of inorganic zinc residue - Fig. 2. This nonferrous machinery cover showed the same type of coating failure due to poor surface preparation and excessive coating system thickness - Fig. 3. Many areas had lost the coating system to bare steel; in others, the coating was still in place but disbonded, with rust beneath En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=5875 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28416 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18240	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Unsuitable spray equipment = unacceptable results / Peter Bock in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 10 (10/2016)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 10 (10/2016) . - p. 12-17 Titre : Unsuitable spray equipment = unacceptable results Type de document : texte imprimé Auteurs : Peter Bock, Auteur Année de publication : 2016 Article en page(s) : p. 12-17 Langues : Américain (ame) Catégories : Dépôt par pulvérisation Expertises Structures offshore -- Revêtements protecteurs Système de pulvérisation (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Both problems involved different valves for use in the structure that were supplied by a single global valve manufacturer to be installed on the same offshore structure for the same owner with the same paint spec and supplier, but each resulted in an entirely different failure. A large valve company that manufactures valves in locations around the world had been selected to supply all of the valves for a new offshore production platform. The valve company claimed that QA/QC procedures were identical at all of its shops worldwide and that valves could be supplied to fabricators from the nearest valve facility without any difference in the quality of the coating system. Assuring that the same coating system and the same levels of quality for surface preparation and coating application are obtained for components manufactured in nearby or faraway places requires cooperation from the structure owner, their specifier, the selected coating supplier and the far-flung manufacturers of the components and units to be assembled into a single production structure. Early on in the new construction of subassemblies of the offshore platform (nothing was in service yet), groups of valves left the valve manufacturer’s shops, supposedly after the valve manufacturer shop’s QA professional had inspected them and certified in writing that they met the owner’s spec. When the shipments of valves arrived at the sub unit and the unit fabricator’s yard, the inspector there checked them before they were incorporated into use. Note de contenu : - FIGURES : 1. Small valves with complex surfaces require conventional spray application for uniform dry film thickness and acceptable appearance - 2. Stippled, wavy appearance of the coating on a small valve indicates airless spray application and an attempt to control DFT by repeatedly triggering the airless gun - 3. Rough surface texture and a wide variation of dry film thickness readings on a small valve are the typical result of airless spray application - 4. Very smooth coating surface and relatively uniform dry film thicknesses are characteristic of conventional spray application En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=5935 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28389 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18447	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 4 / 4)