THE RESULT The entire repair was completed inside of 5 days onsite inclusive of waiting and staging. Both sets of slip rings were machined to a surface finish of 1.0Ra in accordance with the manufacturer’s specifications and the turbine generator …
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PROJECT FACTS Description: MAN B&W HUYNDAI 7L23/30H Location: Portugal – US (under voyage)
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TURBINE ROTOR SHAFT REPAIR SCOPE Complete inspection of the rotor shaft including hardness checks, MPI, measurement etc Machining of journal radius/fillets Machining of the shaft journal to undersize 1.00mm Honing and polishing of rotor shaft journal Fabrication of bluing dummy …
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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 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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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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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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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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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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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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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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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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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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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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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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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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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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PROJECT FACTS COAL/BIOMASS STATION Station Output: 585 MW Shaft Diameter (Pre-Machining): 530 mm Shaft Diameter (Post-Repair): 528.5mm (-1.5mm) Finished surface roughness: 0.2 Ra Repair Time: 4 Days STEAM TURBINE REPAIRS CONSISTED OF: Inspection of the damaged shaft Installation of machining …
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TURBINE SHAFT INSPECTION Once SEC had disassembled the engine and placed the rotor in the stand, Goltens inspected the shaft damage on the compressor and exhaust bearing journals. Goltens visually inspected and calibrated the shaft, performed MPI crack tests and …
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OBSERVATIONS DURING INSPECTION Bearing and sealing area observed to have significant surface scoring Max hardness levels of 334 HB (some areas could not be measured due to deep scoring marks) Magna Flux testing revealed no surface cracks PROJECT FACTS SEC …
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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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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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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 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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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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