The vessel owners consulted the engine maker and presented the method for proposed repair. After consultation with the makers, the vessel owners were informed by the makers that this type of repair was “not possible In-situ”. Despite this adverse opinion, …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
PROJECT FACTS Engine Make/Model: MAN B&W 9K80MC-S Engine Output: 41,670 kW (103 Rpm) Crankpin Dia. Pre machining: 896.00mm Crankpin Dia. Post machining: 891.00mm REPAIRS TO CRANKPINS Full NDT inspection (Magnaflux and Hardness) Machining of new fillet radii Machining of crankpin …
Learn More Download Now
PROJECT FACTS Guide Rail Machining Rail Length: 12 meters Machined Area: 7 meters X 500mm Rails Machined: 2 REPAIRS Machining of rails on both sides with reference point given by the yard. Set up machine on each side 3 times …
Learn More Download Now
PROJECT FACTS Wartsila 6RT-FLEX 50B Weight: 55tons Crankshaft Length: 7560 mm Throw: 2850 mm Journal Diameter: 600 mm Crankpin Diameter: 600 mm REPAIRS Assessment of fillet radii (which are normally out of line due to the shaft manufacturing process) Grinding …
Learn More Download Now
PROJECT FACTS M/V MIMI SELMER Dimension: OD: 2820.00mm×W: 120mm Number of surfaces: 4 Ship Length: 190 meter Tonnage: 55,711 DWT REPAIRS Flatness checking with laser equipment on crane No.1, No.2, No.3 and No.4 RESULTS Goltens technicians completed this job within …
Learn More Download Now
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 …
Learn More Download Now
PROJECT FACTS FPSO KWAME NKUMRAH Company: Modec Ghana, Ltd. Location: Ghana, West Africa Vessel Tonnage: 240,550 DWT Capacity: 120,000 barrels per day IN-SITU MACHINING REPAIRS Inspection of the damaged flange Flange machining to manufacturer’s upper tolerance limit as the damage …
Learn More Download Now
PROJECT FACTS Wartsila 6RT-FLEX 50B Weight: 55 tons Crankshaft Length: 7560 mm Throw: 2850 mm Journal Diameter: 600 mm Crankpin Diameter: 600 mm REPAIRS Assessment of fillet radii (which were out of line due to the shaft manufacturing process) Machining …
Learn More Download Now
THE DECISION Goltens machined the crankshaft to -4mm and to evaluate the condition of the shaft. It was determined that the hard spots did not lessen – in fact, they became worse. All of the surface cracks were removed, with …
Learn More Download Now
The customer decided to cut another -2.00mm to see if the hard area would get smaller and the hardness values would get lower. At diameter 346.00mm the hardness values and area were still out of the engine maker’s specifications. Goltens …
Learn More Download Now
IN-SITU ANNEALING PROJECT FACTS Caribe Mariner Ship Type: Container Ship Engine Make: MaK 8M32 Engine Output Mcr: 3,380kW/4,595HP (600RPM) Crankpin Diameter (Original): 280.00 mm Crankpin Diameter (Finished): 278.00mm Max Hardness pre-Annealing: 650HB Max Hardness post-Annealing: 308HB CRANKSHAFT AND JOURNAL REPAIRS …
Learn More Download Now
PROJECT FACTS French Guyana Powerplant Engine Make/Model: Pielstick PC2.5 18V Crankpin Dia. Pre machining: 315mm Crankpin Dia. Post machining: 312mm Max Hardness before Annealing: 647hB Max Hardness after Annealing: 325hB REPAIRS Full NDT inspection (Magnaflux and Hardness) Machining of crankpin …
Learn More Download Now
PROJECT FACTS Mexican Paper Mill Engine Make: Wartsila W18V32 Engine Output: 6,746 kW at 720 RPM Crankpin Diameter (Original): 310.00 mm Crankpin Diameter (Finished): 307.00mm Max Hardness pre-Annealing: 650HB REPAIRS Removed 1.50 mm from crankshaft prior to annealing Annealed the …
Learn More Download Now
PROJECT FACTS PIELSTICK 10PC 4.2V Vessel type: Fleet Replenishment Oiler Orig. Crankpin Diameter: 465.00mm Material Removed: 2.00mm Post Annealing Hardness: <300 Hb PIELSTICK ANNEALING AND MACHINING PERFORMED Inspected the crankshaft – performing run-out, Magnaflux and hardness checks on the shaft …
Learn More Download Now
PROJECT FACTS WARTSILA 18V46 Location: Dominican Republic Power Output: 17,550 @ 500rpm Original Crankpin Diameter: 450.00mm Material Removed: 4.00mm Pre/Post Annealing Hardness: >600Hb/<350 Hb WARTSILA 18V46 ANNEALING AND MACHINING WORK PERFORMED Inspected the crankshaft – performing run-out, Magnaflux and hardness …
Learn More Download Now
ANNEALING PROJECT FACTS Panamanian Power Plant Engine Make/Model: Wartsila W18V46 Engine Output: 10,000 HP Crankpin Dia. Pre machining: 450.00mm Crankpin Dia. Post machining: 447.00mm Distance between Webs: 450.00mm DIESEL GENERATOR REPAIRS Full NDT inspection (Magnaflux and Hardness) Machining of crankpin …
Learn More Download Now
PROJECT FACTS METAL REFINERY MILLING # of Guides Machined: 4 Total Length/Width of Cobalt guides: 1,200mm x 200mm Length/Width of Nickel guides: 1,000mm x 150mm Material Removed from guides: ~1.5mm IN-SITU STERN TUBE BORING REPAIRS XY Milling of 2 nickel …
Learn More Download Now
PROJECT FACTS BEN KIEN SHIPYARD Vessel: M/V 9200T-03 Rudder stock Length: 4.610m Rudder stock diameter: 300/400/545/350mm Rudder stock weight: 9500 kg Machined length of Shaft: 770mm WORKSHOP REPAIRS Rudder stock cleaned & measured (before & after repair) Completed alignment check …
Learn More Download Now
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 …
Learn More Download Now
PROJECT FACTS GDF SUEZ – STEAM TURBINE Turbine Manufacturer: Hitachi Turbine Model: TC4F Generator Output: 800 MW Turbine RPM: 3,000 rpm Turbine Type: Tandem/Compound Shaft Diameter: 610mm IN-PLACE STEAM TURBINE MACHINING SCOPE Inspection of journal damage including magnaflux and hardness …
Learn More Download Now
Goltens milled out the damaged area and completed post machining dye penetrant checks to ensure that 100% of the damage had been removed. Goltens fashioned a template of the damaged area and fabricated an insert that was machined to fit …
Learn More Download Now
PROJECT FACTS REEL HUB FLANGE FACING Customer: TriYard Shipyard Vung Tau Project name: 1200MT 16M Deck Reel Vessel: Lewek Constellation Top Flange dimension: OD2300 x ID2120 x 2 pcs Bottom Flange Dimension: OD2300 x ID2060 x 2 pcs Class Surveyor: …
Learn More Download Now
PROJECT FACTS Line Boring of Jack up Crane Original Bore Diameter: 217mm Final Bore Diameter: 227mm Number of Bores completed: 12 REPAIRS In-Situ line boring of 12 locking pin bores. RESULTS The initial project scope was for Goltens to complete …
Learn More Download Now