In-place Machining Minimizes Cost and Downtime for Tanker Engine Repair
PROJECT FACTS Description: MAN B&W HUYNDAI 7L23/30H Location: Portugal – US (under voyage)
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All Engine Services Case Studies
Another successful repair for Royal Caribbean’s Legend of the Seas
REPAIR RESULTS: Once the engine was rebuilt, Goltens laser aligned the engine and the generator and flushed the lube oil system to clear any debris. The prescribed running in procedures and operational testing were accomplished on voyage after the dry-dock. …
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In-place machining and major maintenance service – Wartsila 18V50DF
IN-PLACE MACHINING AND ANNEALING After the tender was awarded, Goltens in-place machinists first machined the crankpin to -4.5mm to remove all surface cracks leaving a hard spot 250mm x 120mm. Goltens then performed the annealing process and reduced the crankshaft …
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Fast response and comprehensive repair for Arizona nuclear power plant
THE INSPECTION AND THE PROPOSAL During the inspection, Goltens learned that the engine had suffered the same casualty on the same cylinders 30 years earlier. The block had significant damage to the crankcase near the doors, liner landings and the …
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Turning up the heat in Cameroon
INSPECTION AND REPAIR PLANNING Goltens diesel experts were asked to inspect the damage and determined that the crankshaft could be salvaged within the rated diameter with in-situ machining and annealing. Crankpin journal number 7 (450mm diameter) and main journals number …
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Hyundai MAN B&W 6L28/32H crankshaft repair and replacement
CRANKSHAFT REPLACEMENT AND REBUILD: Disassembly of engine and rigging of crankshaft from engine room and re-assembled of engine components. Full inspection of crankshaft including MPI test on all journals to ensure no crack Straightening of crankshaft and machining crankpins to …
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Is a repair even possible?
Goltens was called to answer these questions, when this nightmare turned reality aboard a 34-year-old rail vehicles carrier. Goltens specialists surveyed the engine and discovered, in addition to the large hole in the engine block, damage to the lower liner-landing …
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A matter of millimeters – no room to spare
DANGEROUSLY CLOSE TO THE LIMIT The owner opted to go with a competitor and allowed them to machine more than 5.00mm, dangerously close to the 6.00mm limit, from the 600.00mm crankshaft diameter. With less than half a millimeter remaining within …
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Bergen Crankshaft Replacement on AHTS Offshore Supply Vessel
Laser alignment was performed on the engine and the team chocked the engine with Chockfast® Orange. Once complete, the engine was flushed and checked by the Rolls Royce engineer and dock and sea trials were completed with no issues. The …
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7 engine overhaul keeps drill ship operational with no down time
PROJECT FACTS 7 ENGINE OVERHAUL Vessel Type: Mobile Offshore Drilling Unit Work Location: Gulf of Mexico Engine Make/Model: HiMSEN 9L32/40 & 18V32/40 Engine Output: 4,500 kW & 9,000 kW Engines Overhauled: Six in-line & One V-type HIMSEN 9L & 18V …
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In-situ annealing & machining restores US Naval vessel main engine to service
PROJECT FACTS COLT PIELSTICK PC 2.5V16 Location: San Diego, CA USA Max Hardness Pre-Annealing: 580HB Max Hardness Post-Annealing: 333HB Original Main Journal Diameter: 330.00mm Finished Diameter: 327.00mm (-3.00mm) Thrust Face Machining: -1.00mm (fore/aft) COLT PIELSTICK 2.5 V16 ANNEALING AND MACHINING …
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In-Situ crankshaft machining restores bulk carrier crankshaft
PROJECT FACTS MV BEAGLE VI Engine Make/Model: Mitsui B&W 5L42MC Engine output: 4983 KW RPM: 176 RMP Original Diameter: 472mm Post Machining Diameter: 466mm Work Location: Kaohsiung – Taiwan IN-PLACE MACHINING SCOPE: Inspection of damaged Engine and Crankshaft including: In …
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Sulphur Emissions – LSGO Modification of Fuel & Cooler System
PROJECT FACTS LSGO COOLER INSTALLATION Vessel Type: Q-Flex LNG Number of Vessels: Seven Engine Make/Model: MAN-B&W 6-S70ME-C x2 Work Location: Voyage and UAE LSGO FUEL & COOLER SYSTEM WORKSCOPE: 3D Scanning & Modelling Detailed Engineering Procurement of all piping and …
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In-Situ Crankshaft Machining for Royal Saudi Navy
PROJECT FACTS PIELSTICK 14PC2.5 V400 Customer: Royal Saudi Naval Forces (RSNF) Engine output: 5,400 kW (13,200 HP) Position: Port Side Main Engine Type of Repair: In Situ Crankshaft Machining, Main Bearing Cap Repair & Engine Overhaul PIELSTICK 14PC2.5 REPAIR SCOPE: …
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Diesel Engine Overhaul of a Seismic Survey Vessel
PROJECT FACTS BERGEN KRG-9 OVERHAULS Vessel Type: Seismic Survey Vessel Work Location: Houston, Texas Engine Make/Model: Bergen KRG-9 Engine Output: 1825Kw, at 750RPM Main Engines: Three BERGEN KRG-9 MAIN ENGINE OVERHAUL SCOPE: Disassembly of engines Inspection and measurement of all …
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Emergency stern tube bearing rebabbitting
PROJECT FACTS NORDIC FIGHTER Vessel type: Crude/Oil Products Tanker Stern Tube Dimensions: OD: 636.00mm x L: 1,200mm Tonnage: 153,328 DWT Main Engine: MAN B&W 6S70MC STERN TUBE REBABBITTING SCOPE Incoming inspection of AFT stern tube bearing before and after removal …
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Emergency repairs restore LPG carrier’s B&W 6S50MC main engine in Houston
PROJECT FACTS LPG CARRIER MAIN ENGINE Work Location: Houston, Texas Engine Make/Model: Hitachi Zosen B&W 6S50MC Engine Output: 6845Kw at 115RPM B&W 6S59MC MAIN ENGINE REPAIR SCOPE Inspection and overhaul of all six liner and piston assemblies Inspection cleaning and …
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Metal stitching and crankshaft repairs salvage Yanmar engine
PROJECT FACTS MV VTC OCEAN Engine Type: Yanmar 6N18-UN Output: 450 KW Vessel Type: Bulk Carrier YANMAR DIESEL REPAIR WORK SCOPE Complete cleaning and inspection of engine block Complete cleaning and inspection of crankshaft at workshop Repaired the badly damaged …
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Auxiliary Engine Overhaul w/ Minimal Downtime
Auxiliary engine overhaul process Exhaust and inlet valves and seats were ground/machined within maker’s limits and all rejected valves and seats were replaced. All fuel injectors were overhauled in Goltens’ fuel workshop and rejected items were replaced. All indicator cocks …
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When Boring is Interesting
PROJECT FACTS GUAM POWERPLANT Engine Maker: Doosan Korea Engine Model: MAN B&W 12K80MC Main Bearing Pocket Diameter: 992mm REPAIRS Assessment and laser alignment check of the all main bearing pockets. Correction of the main bearing pocket horizontal contact landings in …
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Mitsubishi 18KU30B In-Situ Crankshaft Annealing in Senegal
Demonstration of annealing process Mitsubishi invited Goltens to demonstrate its annealing process on a crankshaft that had been intentionally hardened for the demonstration in its factory in Yokohama, Japan. Goltens technicians traveled to the factory and, following its GL-approved process, …
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Goltens Metal Stitching repairs salvage engine block
PROJECT FACTS METAL STITCHING Engine Model: MaK 12M282 Vessel Type: FPSO Engine Output: 2,400KW RPM: 1,000 RPM METAL STITCHING REPAIR Full inspection of the damaged block Removal of damaged portions of the block – leaving a clean surface to stitch …
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Damaged Journal Repair Case Study
PROJECT FACTS Engine Make/Model: Mitsubishi 6UEC85LS-II Engine Output: 22,432 kW Original Crankpin Diameter: 950.00 mm Distance between Webs: 335.00 mm Finished Crankpin Diameter: 940.00 mm DAMAGED JOURNAL REPAIRS Hardness check and crack test via Magnaflux on No.1 crankpin journal Machining …
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Crankshaft Bearing Failure Case Study
PROJECT FACTS MAN B&W V9V40/54 Crankpin Diameter: 320 mm Pre Annealing Hardness: 630 Brinell Post Annealing Hardness: 320 Brinell Finished Crankpin Diameter: 316 mm (-4.0mm) CRANKSHAFT ANNEALING AND MACHINING REPAIRS Machining of new fillet radii Magnaflux crack testing and Hardness …
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In-Situ X-Y milling on badly damaged main engine guide rails
PROJECT FACTS HAI FENG 618 Vessel type: Refrigerated Cargo Ship Tonnage: 7,934 DWT Main Engine: Mitsubishi 6UEC52LA Power: 7,061 KW IN-PLACE MACHINING AND DIESEL REPAIR SCOPE Machining Cylinder No. 1 FWD & AFT guide rail port side to -2.50mm undersize …
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