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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Once the gearbox was moved to a safe work area and the gears were secured, Goltens machined the damaged areas on the gear to ready the surface for repair. Technicians then applied selective electroplating to the damaged gear teeth using …
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After preliminary meetings and discussions on the tolerances of the bush and tube Goltens proposed a combination of on-site and workshop efforts to complete the work. ON-SITE WORKSCOPE Port and Stbd. Bore alignment laser checks In-situ line boring of Port …
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To ensure the bores were all in perfect alignment and the flanges were perfectly flat, Goltens used the latest in laser alignment and flatness-checking equipment. On the largest of the flanges, Goltens’ 3m x 3m X/Y milling equipment had to …
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PROJECT FACTS OIL PLATFORM Flange Diameter: OD 3,429 mm / ID 3,092mm Depth of flange from surface: 6.3 mm Hole Dia. and Qty: 41.27 mm x 96 Holes Drilled hole depth: 80mm ON-SITE MACHINING WORK SCOPE Performed flatness checks with …
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PROJECT FACTS ABB THRUSTER FLANGES Outside Flange Diameter: 2810 mm Inside Column Diameter: 2610 mm Number of Flanges: 3 Number of M3 Holes: 114 per Flange ON-SITE MACHINING CONSISTED OF Laser Alignments of three (FWD, AFT and Center) Thruster surfaces. …
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PROJECT FACTS OIL PLATFORM Flange Diameter: OD 3,429 mm / ID 3,092mm Depth of flange from surface: 6.3 mm Hole Dia. and Qty: 41.27 mm x 96 Holes Drilled hole depth: 80mm ON-SITE MACHINING WORK SCOPE Performed flatness checks with …
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PROJECT FACTS FPSO CONVERSION Pump Foundation Skid Quantity and Dimensions: – Length 700 mm x Width 185 mm x 2pcs – Length 330 mm x Width 140 mm x 2pcs – Length 655 mm x Width 590 mm x 1pc …
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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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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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After testing the new machinery in its workshops, Goltens was immediately engaged by Strategic Marine Shipyard in Vietnam to machine two flange surfaces of about 4M diameter for Voith propellers on a tug boat for the Port of Napier, New …
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LINE BORING PROJECT FACTS Stinger Hinge Machining Internal diameter of bore: 1350 mm Distance between hinges: 8 meter ± 1.5mm Length of the bore: 600 mm Number of hinges machined: 2 Tolerance of the internal diameter: H7 HINGE PIN REPAIRS …
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PROJECT FACTS Octagonal FDPSO N262 Max working depth: 3000 meter Storage Capacity: 160,000 barrels Fairleader diameter (pre): 651.00 Fairleader diameter (post): 652.50 Fairleader Sets: 13 sets of 3 bores ON SITE LINE BORING REPAIRS Alignment checking of 13 sets of …
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PROJECT FACTS LEAKING PROPELLER SHAFT SEAL Diameter of flange: 1200 mm Tolerance of flange flatness: ±0.05 mm Machined Length: 130 mm Number of flanges machined: 1 REPAIRS Inspection and isolation of leak Laser alignment of propeller shaft line Welding of …
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PROJECT FACTS STERN TUBE BORING Vessel: M/V Cape Engine: MAN B&W 6S60MC (8,679KW) Tonnage: 73,049 DWT FWD Inside Dia X L: 658.00mm X 1250mm (+4.03mm) AFT Inside Dia/Length: 660.00mm X 660mm (+6.00mm) STERN TUBE HOUSING REPAIRS Full inspection and …
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PROJECT FACTS CJ-70 Jack Case Fixation Vertical Flanges machined: 450mm x 150mm x 8pcs Material removed from foundation: 18mm – 20mm Port & Stbd foundations: 3390 x 100mm x 8pcs Material removed from Flanges: 12mm – 15mm REPAIRS Laser alignment …
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PROJECT FACTS M/E CYLINDER LANDINGS Vessel: M/V HONG XIANG JUN Engine: PIELSTICK 12PC2-5V, 4 units×5360KW Tonnage: 3943 DWT Dredge Capacity: 4,500m3/h REPAIRS Flatness checking of No. 4, 5 and 6 cylinder covers with laser equipment RESULTS Goltens technicians completed this …
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PROJECT FACTS Turret Head, Chain Table, Riser-I Tubes and Swivel Support Machining Dimension of Chain Table: OD 5,600mm x ID 5,190mm Dimension of Turret Head: OD 5,990mm x ID 5,580mm Swivel Support: OD 1,740mm x ID 950mm I-Riser Tubes: OD …
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PROJECT FACTS DRILL SHIP LINE BORING Thruster Manufacturer: Roll Royce Year Built: 1975 Vessel Tonnage: 7,403 DWT Housing Dimension: ID 1270 mm Max Water Depth: 7,000ft Max Drilling Depth: 25,000 ft IN-SITU LINE BORING CONSISTED OF Customized line boring tools …
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Taper boring tool design and manufacture The job required the design and manufacture of special boring tools to complete the job. Goltens In-Situ machining engineers developed the G2000, a large scale machine capable of handling both line and taper boring …
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ON-SITE MACHINING CONSISTED OF: Flatness checks of the turret flange and laser alignment of the flange facing machinery Machining of the turret flange to remove surface abnormalities (pre-machined flange had an undulation of 0.64mm). Finish machining of turret flange to …
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Goltens handled the local mobilization and logistics for all of the tools and related equipment necessary for the job and mobilized leading in-situ technicians to the yard, located about 200 KM north of Los Angeles to execute the job. PROJECT …
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PROJECT FACTS Engine: Pielstick 2.3 Engine Output: 6,485kW RPM: 514 RPM Original Shaft Diameter: 203.20 mm Length of machined journal: 610.00 mm Shaft Dia. Pre-sleeving: 179.60mm REPAIRS Magnaflux and hardness inspection of the shaft Machining of generator shaft to 179.60 …
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ENGINE INSPECTION/DAMAGE ASSESSMENT: The inspection revealed that the crankshaft was damaged beyond repair and would need to be replaced. The damaged crankshaft was skidded out from the engine and further inspection of the main bearing showed signs that the crankshaft …
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Goltens’ specialists started the work by dismantling and extracting the 80-tonne engine block from an existing power plant in a rural location in the Philippines. At this stage, visual inspection and nondestructive testing were performed to confirm suitability of the …
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