The Biogas RNG market in North America is currently experiencing unprecedented growth due to favorable policies and its environmental benefits. Goltens Worldwide’s green division, Goltens Green Technologies, has responded fast to this expanding demand, undertaking several RNG projects during 2022 and 2023, including on dairy farms.
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A machinery repair specialist contacted Goltens with an urgent request for repair support on badly damaged compressor casings.
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Goltens’ customer was engaged by an end user in Europe to supply and install a Steam Power Generation unit. They had discovered that lead times on a new unit were extensive and the costs prohibitive.
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A 13-year-old, 90,000 DWT, container ship was experiencing trouble with their 98MC-C main engine’s camshaft and engaged Goltens Singapore to undertake the removal of the Camshaft Chainwheel Sprocket, removal of the shaft, machining of the bearing housing, and reassembly of the components.
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Knowing Goltens’ capabilities to provide comprehensive Energy Efficiency Existing Ship Index (EEXI) compliance packages and support solutions, the owners of a 32,564 DWT Bulk Carrier engaged Goltens to carry out Engine Power Limitation (EPL) work on their UE 6UEC52LA main engine while docking in Long Shan shipyard, China.
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A well-known hospital in the UAE recognized that the Woodward Gen6000 controllers on their FG Wilson generators were obsolete and no longer supported. The hospital approached Goltens Energy Control Solutions (GECS) to seek a technically sound and supported upgrade for this critical emergency power machinery.
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Goltens was engaged to evaluate the current controls configuration on two Therma Mobile inc. Oil-fired floating power barges and propose a solution to both increase the efficiency and reliability of startup and operations while also meeting strict NGCP (National Grid Corporation of the Philippines) regulations for ancillary power load response.
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Goltens was engaged to inspect the main-engine crankshaft on a 23-year-old, 11,700-dwt chemical/product tanker anticipating that the crankshaft could be salvaged with in- situ machining.
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A Chinese PTA chemical plant, with 1.5 million tons of annual production, was undergoing an emergency overhaul on a large multi-axis air compressor critical to plant production. Due to the criticality of the compressor, the plant was pressing for the shortest possible completion.
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A polyester plant in Indonesia was planning a shutdown in four weeks and suspected that the polyester reactor’s 285mm diameter agitator shaft was damaged and would require repair during the maintenance window. The maintenance window was short, and the extent of the repairs required was unknown.
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Goltens Singapore was engaged by a Singaporean shipyard to undertake an engine overhaul project on a 9-year-old LNG tanker with a tight timeline. The yard required four Wartsila 12V50DF auxiliary engines to be overhauled in only 14 days.
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During periodic maintenance, the crew of a 14-year-old, 122,000 DWT container vessel, noted excessive wear and ovality on five of the six crankpins (#2 through #6) on one of their Wartsila W6L32 auxiliary generators. Crankpin #1 had previously been machined to undersize and did not require repair. The vessel owner contacted Goltens about undertaking the further inspection and rectification of the worn crankpins.
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A 10-year-old cement carrier suffered a main engine bearing failure on its Daihatsu 8DKM28 engine. The OEM was contacted by the client to inspect the damaged crankshaft and the OEM determined it was beyond repair and required replacement.
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To address the operational requirements, simplify the design and reduce the time required for the retrofit, Goltens again used its “Smart Box” that converts the existing 3161 or UG8 engine wiring directly to the UG25+ configuration. The use of the Smart Box makes the conversion fully plug and play without having to consider additional wiring or complex configurations.
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A 13-year-old, 35,555 DWT, Container Ship experienced a shipboard fire on its #3 Yanmar 6EY26L auxiliary diesel generator causing significant mechanical and electrical damage to itself, the adjacent #4 DG, and the engine space as a whole. As a result of the fire, the vessel lost power, use of the aux boiler and main propulsion for an extended period.
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Goltens received an urgent call from a power plant in the city of Gorontalo in Sulawesi. The plant’s 10MW Shandong Jinan steam turbine suffered a bearing failure resulting in a damaged rotor shaft. The power plant is a vital source of power to the city and minimizing downtime was critical.
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An 11-year-old container vessel suffered a major casualty on one of its Yanmar 6EY26L auxiliary engines resulting in pieces of the connecting rod breaking through the crankcase wall causing extensive damage. Knowing how operationally disruptive and exceedingly expensive a block replacement would be, the owner contacted Goltens Dubai to inspect the damage and determine if the block could be salvaged.
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A European tanker owner approached Goltens Green Technologies in The Netherlands to support the retrofit of an Alfa-Laval Pure Ballast BWTS system on their 6-year-old, 50,000 DWT, Chemical/Products Tanker.
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The feasibility, efficiency and availability of solar panels worldwide make the transition to renewable sources easy and cost efficient. To reduce fuel consumption and CO2 output, a small self-powered island, which met its power requirements by running Diesel Generators, installed two solar systems to capitalize on the abundant solar energy available in the UAE.
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Optimarin initially engaged Goltens Green Technologies to undertake the 3D scanning, basic design and detailed engineering package for the retrofit installation on a 10-year- old, 37,000 DWT cargo vessel.
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Goltens was contacted by a containership operator to inspect damage on its MAN 9L 48/60 main engine crankshaft. During operation, the main engine’s connecting rod bolts gave away and caused major damage to crankpin number 4. Goltens boarded the vessel at Dubai Maritime City for inspection.
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Goltens received a call from the operator of a nine year old crude oil tanker about damage to one of its three HiMSEN 6H 25/33 diesel generator sets. The engine had recently undergone routine overhaul but during operation, the engine went to overspeed and triggered a shutdown.
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A 12-year-old container ship was undergoing dry docking in China when issues with the main engine shafting were discovered. The coupling bolts for the flywheel and the intermediate shaft had elongated and been worn to an oval shape and there was 0.5mm clearance between the flywheel and intermediate shaft landing surfaces.
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Goltens was engaged by the owner of an offshore supply vessel to upgrade two medium speed engines operating with obsolete Woodward 723Plus controllers.
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