Marine Link
Tuesday, December 12, 2017

Steel Surfaces News

SSPC Publishes Visuals for Waterjetting, Blast Cleaning

SSPC: The Society for Protective Coatings has published two new collections of surface preparation reference photographs: SSPC-VIS 4 and SSPC-VIS 5. SSPC-VIS 4 illustrates the appearances of steel surfaces prepared by waterjetting while SSPC-VIS 5 shows steel surfaces prepared by wet abrasive blast cleaning. Both contain a written guide and explanatory notes, as well as additional photographs that depict degrees of flash rust after cleaning. SSPC-VIS 4 and SSPC-VIS 5 were developed in collaboration with NACE International under the direction of the SSPC/NACE Joint Task Group on Wet Blast Visual Standards. SSPC visual standards and reference photographs are used to access the condition of coated and/or uncoated steel before and after cleaning…

Euronavy ES301 Surface Tolerant Anticorrosive

Sherwin-Williams offers Euronavy ES301, a solvent-free anticorrosive epoxy designed for application over marginally prepared surfaces. Sherwin-Williams acquired Euronavy in December 2008. “Euronavy ES301 is an extremely durable surface-tolerant coating that allows customers to protect their steel assets against corrosion in an extremely cost-effective way,” said Brad Rossetto, Vice President, Marketing, Sherwin-Williams Protective & Marine Coatings. The product can be applied with no dew point restrictions over damp steel surfaces and over flash-rust, reducing application time and costs. Coating can occur immediately after hydroblasting or other water preparation methods without drying.

Ruukki Expands Range of Raex Wear-resistant Steels

Direct quenched Raex wear-resistant steel is made in a range of thicknesses from 2 mm to 80 mm. (Photo: Ruukki Metals Oy)

Ruukki can now supply steels for all applications requiring wear-resistant special steels. Ruukki Raex special steel can withstand wear and surface pressure and the range has now been expanded to include the thicker wear-resistant steels needed, for example, in the mining industry, Raex said. Raex special steel is made in a range of thicknesses from two-80 mm. The new thicker Raex wear-resistant steels up to 80 mm can be used, among other things, to manufacture parts for heavy machinery and equipment designed for excavation, loading, transporting and crushing ore in mines.

Ecofix Corrosion Repair with Ecoshield Application

Image: Subsea Industries

Subsea Industries announced a new product for filling and building up a corroded and pitted steel surface to its original form prior to recoating with Ecoshield. According to the manufacturer, Ecofix is as tough as the steel itself, machinable and can be used to repair most pitting or corrosion damage on rudders, stabilizer fins, thrusters and other underwater gear. Ecofix is used in combination with Ecoshield, the ultimate rudder protection coating. When a rudder or other piece of underwater ship gear has not been properly protected, the surface will become corroded.

Ecofix Filler Coat Cuts Rudder Repairs Cost

Subsea Industries’ Ecofix is a cost-effective solution for the repair of corroded or pitted steel surfaces

With an increasing trend for thruster and rudder manufacturers finishing their products with self-cleaning protective hard coatings, Antwerp headquartered Subsea Industries has introduced a filler coating for use with its award-winning Ecoshield hard coat system. Ecofix, specifically formulated to provide shiprepairers and Original Equipment Manufacturers with a cost-effective solution for the repair of corroded or pitted steel surfaces, returns the thruster or rudder to its original state prior to touching up the repaired area with Ecoshield.

Sherwin-Williams Awarded for Work on USS Ronald Reagan

USS Ronald Reagan (U.S. Navy photo)

Sherwin-Williams said it was awarded Military Coatings Project Award of Excellence for exceptional coatings work on U.S. Navy’s Nimitz-class nuclear-powered supercarrierUSS Ronald Reagan at SSPC 2014. The award recognizes exceptional coatings work performed on U.S. military ships, structures or facilities. “This award is truly an honor for our company in partnership with the U.S. Navy and IMIA,” said Mark Schultz, Marine Project Development Manager, Sherwin-Williams Protective & Marine Coatings.

Tank Tests

The Salvage Association (SA) said last week that it has pinpointed phosphoric acid as another chemical cargo causing some anxiety to marine underwriters, following the controversy surrounding the carriage of calcium hypochlorite chemical cargoes in containers. The SA said in a statement its Singapore office has been involved in two cases where stainless steel tanks in chemical tankers have been attacked by the acid, leaving large black stains on the surface and in the worst case, pitting and grain boundary attack. The structural strength of the tanks is not affected but it is detrimental to other sensitive cargoes, and its unsightly appearance means the vessel could be rejected by cargo surveyors.

NSF Certification for PPG's Products, Coating Systems

Diane M. Kappas Vice President, Protective and Marine Coatings, Americas

PPG Industries’ protective and marine coatings (PMC) business announced that four individual coatings and primers and two combined coating-and-primer systems have been certified by NSF International for water-tank applications. AMERCOAT 133/844 pit-filler is a hand-applied coating designed to fill deep holes in pitted steel surfaces with a single pass. It features a 100-percent solids formulation and emits almost zero volatile organic compounds (VOCs), and it trowels easily to a smooth finish.

Hempel Launches New Cargo Hold Coating

Leading coatings manufacturer Hempel announced today the launch of Hempadur Impact 47800, a new dedicated coating for bulk carrier cargo holds. Hempadur Impact offers high-end abrasion, impact and corrosion resistance, and completes Hempel’s range of cargo hold coatings. Hempadur Impact is a new dedicated cargo hold coating for shipowners who want a high-performance cargo hold coating with a very attractive price/performance ratio. The coating protects ship cargo holds from both mechanical damage and the severe abrasion caused when loading hard angular cargoes. With a 7½ year major repair interval, it enables shipowners to extend drydocking periods between major cargo hold coating repairs and so reduce maintenance costs.

Bolidt Underlay Worth Weight for ConocoPhillips

 ConocoPhillips has selected BOLISCREED 400 for its North Sea unit (Photo: Bolidt).

Efforts by ConocoPhillips to achieve the lightest weight possible for the superstructure of its Ekofisk L accommodation facility have been demonstrated by its selection of an underlay construction material which will remain unseen. The oil major has selected BOLISCREED 400 for the high-profile North Sea unit, which will replace the longstanding Ekofisk H and Ekofisk Q as part of ConocoPhillips plans to prolong activities in the Ekofisk field by up to 40 years. Ekofisk L’s topside is currently under construction at Singapore’s Sembawang (SMOE) shipyard…

Bolidt Underlay Worth Weight for ConocoPhillips

A ConocoPhillips superstructure in the Ekofisk field (Photo: Bolidt).

Efforts by ConocoPhillips to achieve the lightest weight possible for the superstructure of its Ekofisk L accommodation facility have been demonstrated by its selection of an underlay construction material. The oil major has selected Boliscreed 400 for the high-profile North Sea unit, which will replace the longstanding Ekofisk H and Ekofisk Q as part of ConocoPhillips plans to prolong activities in the Ekofisk field by up to 40 years. Ekofisk L’s top side is currently under construction at Singapore’s Sembawang (SMOE) shipyard…

60th PSPC Gap Analysis for Chinese Shipyards

Lloyd’s Register Classification Society (China, [LRCS]) and International Paint have delivered their 60th training course aimed at bringing Chinese shipyards up to speed with the International Maritime Organization’s (IMO) new Performance Standard for Protective Coatings (PSPC) on commercial ships. The joint initiative, which ultimately promotes safe and sustainable shipping, has in its first two years re-enforced the reputations of the entities of the Lloyd’s Register Group as the first to provide timely technical advice to industries in the energy and transportation supply chains. Gap analyses, which assess a shipyard’s current coating practices against the new regulatory requirements…

Coatings & Corrosion Control: Microbiologically Influenced Corrosion (MIC)

Recently, the use of certain environmental-friendly waxes or "semi-hard coatings", used by barge fabricators to protect the internal void walls and floors of marine double-hulled steel barges from corrosion, have fallen under scrutiny by some barge owners/operators. It is believed that certain paraffin wax coatings act as a food source for certain living corrosive microorganisms. These single-celled organisms are associated with a phenomenon known as Microbiologically Influenced Corrosion (MIC) that can cause localized pitting and eventually leaks in steel barge voids. This following examines the biological and chemical research that has recently been performed on the Jotun Paints, Inc, "beeswax" coating by two independent laboratories.

Rugged Propulsion System Designed for the Swamps

Metal Shark 21 Riverine equipped with Swamp Shark surface drive, shown powering through vegetation in Louisiana’s Atchafalaya Basin (Photo: Metal Shark)

A new all-terrain vessel propulsion system specially engineered and built for operation in extreme shallow water, riverine and mud flat environments will safely and reliably propel a vessel through dense vegetation, mud and debris-strewn waters. The highly durable Swamp Shark Drive system has been introduced through a partnership between Louisiana-based boat builder Metal Shark has partnered with Angelle Development, LLC of Breaux Bridge, La. “I began designing this system and building the initial prototype in 2011 with the goal of creating the ultimate ‘go anywhere…

Hempel Rolls Out New Cargo Hold Coating

Photo provided by Hempel

Hempel has launched Hempadur Ultra-Strength Fiber 47510, a new cargo hold coating said to deliver up to 40 percent reduction in cargo holds maintenance costs, according to the coatings manufacturer. Hempel said the new coating is specifically designed to withstand conditions experienced by cargo holds, hatch covers and hatch coamings of bulk carriers, offering superior corrosion protection and long major repair intervals for owners and operators, as well as application simplicity for shipyards and applicators.

Feature: The Corrosion Control Challenge

Last year Germanischer Lloyd and Mühlhan sponsored a Surface Protection Symposium in October in Lübeck, dealing with the topic of value retention in the shipping industry. The outcome was a lively exchange of ideas among shipowners, coating material manufacturers and surface protection experts. Up-to-date findings from research were discussed with the same vitality as problems from workaday practice. This report provides an overview of the events involved. After Dr. Richter from Germanischer Lloyd had welcomed those attending, Mr. Harms — also from Germanischer Lloyd — described both the development and current status of international stipulations for the assessment of corrosion in water ballast tanks…

Whirling Steel Blades

Aurand's M and K tools, with their whirling steel blades, shape up any surface prior to recoating or repainting. The M tool is slightly heavier, and more aggressive than the K tool, and is typically used on horizontal surfaces. Adjustable depth settings protect the underlying surface, and prevent overloading, stalling and excessive cutter wear. Both are available in many widths, and in pneumatic or electric models. A dust collector is also available for each model.

PPG PMC to Offer AMERCOAT Coatings in Mexico

PPG Industries' protective and marine coatings (PMC) business announced that customers in Mexico can order AMERCOAT brand products directly from PPG. -AMERLOCK surface-tolerant epoxies protect steel and concrete structures such as offshore platforms, petroleum processing plants, storage facilities and marine structures in severe environments. Available in a wide range of colors and low-VOC (volatile organic compound) formulations, Amerlock epoxies are engineered to prevent film pinholing and solvent entrapment at the substrate/coating interface, a common site of coatings failure with conventional epoxies and lower-solids systems. -DIMETCOTE inorganic zinc primers are designed for protection of carbon steel against corrosion.

Coatings: Metal Fusion Helps Stop Corrosion

New advances in metal fusion technology produce a metalized coating with no porosity, which can be applied at rates similar to those achieved by airless painting practices. The substrate temperature does not affect the process, and there is no curing time. The competitive process results in extremely long term near permanent corrosion protection, which is designed to be competitive in price with conventional corrosion systems. High speed metalizing of a variety of substrates can be accomplished rapidly under harsh field conditions. As there is no cure time required for the process, which can be used to apply up to 35 mils with only one coat, the application time is often much reduced from a conventional corrosion prevention system.

Antiphon AB’s Sound Damping Sandwich Steel

Photo courtesy Örn Marketing AB

The Swedish company Antiphon AB has introduced a new product for structure borne sound damping; antiphon MPM (metal-polymer-metal) foiled, a sheet metal laminate with a thin foil on one side. The core material is two zinc coated sheet steel laminated with an acoustic inner layer to obtain the best structure borne sound damping. MPM foiled makes it possible to use laminated sandwich systems in more visible environments and also to choose MPM foiled deliberately as a decoration material where sound damping is wished for.

NAPA Releases 2003.1

At press time, NAPA Release 2003.1 was scheduled for launch this spring. Efficiency and user-friendliness are promoted by enhancing the availability of the graphic user interface, and by designing tools for entire processes. For instance, the NAPA Manager process handling tool supplies the user with templates presenting complete calculation chains. The new version includes a number of new features, among them a generic optimization tool. NAPA Geometry now supports the renewed interactive parametric surface definitions. The user can design and choose the parameters desired, as all the main particulars of the ship are always available whenever the software is in use. The NAPA Manager, introduced in 2001 for organizing complex tasks, has forged ahead.

The Floating Volvo

Vision, a unique VLCC built by Korea's Hyundai Heavy Industries Co., Ltd. (HHI) in that it features twin-engines and twin-propellers, was recently christened at the Ulsan Shipyard. Concordia Maritime AB's new ultra-large 315,000-dwt VLCC was christened by Mrs. Karen Fidler, wife of the president of Sunoco Inc., the company that chartered the VLCC. Built for Concordia Maritime, of the Stena organization, the VLCC is a revolutionary type of crude oil carrier. The 1,102 ft. (336 m) long Stena V-Max design VLCC differs from other large tankers built in the world to date. In addition to double hulls, the VLCC has double, completely separate engine rooms, double rudders and double propellers.

New PowerShark Tool Eats through Biofouling

PowerShark WB3000 (Photo: Waveblade)

The PowerShark WB3000, a new rechargeable, submersible handheld tool from Waveblade, Inc., removes barnacles and other unwanted growth in seconds. According to the manufacturer, it delivers a new level of efficiency and safety for shallow dive maintenance work on hulls and marine structures, and works equally as well for land-based projects. The PowerShark capitalizes on a patented resonant wave technology. Oscillating at a 3,000 rpm frequency with additional harmonics, the tool's cleaning head actually breaks the chemical bond between materials.

Maritime Reporter Magazine Cover Nov 2017 - The Workboat Edition

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