The crew of a nine year old container ship, equipped with a Wartsila 6RT-FLEX82C main engine, observed exhaust gas blow by on cylinder #5 during normal operation and could not increase the load above 35%. The cylinder liner had 22,452 running hours and the crew suspected the cylinder liner was excessively worn and needed to be replaced.
Learn More Download Now
Goltens received a call from a Nuclear Power Station in upstate New York to perform an inspection on one of their EMD 645-20 Emergency Diesel Backup Generators (EDBG) for Unit 2, one of the two nuclear reactors that generate a combined capacity of 1,907MW power.
Learn More Download Now
PROJECT EXECUTION: Goltens prepared the detailed installation and chocking plan for class submittal and deployed a team to the site. Upon arrival, the port engine had already been lowered into position and Goltens proceeded to weld the jacking plates in …
Learn More Download Now
PLANNING & PREPARATION After surveying the vessel for rigging logistics, Goltens prepared all required lifting brackets and rigging gear at its work shop and reviewed the repair schedule and timeline with the customer. Goltens then mobilized the tools and a …
Learn More Download Now
Diamond Offshore contracted Goltens Houston to provide complete service maintenance and supervision for two 20,000 hour and three 10,000 hour overhauls on their engines. To minimize operational impact, Goltens technicians worked around the clock in two, twelve hour shifts in …
Learn More Download Now
LIFTING OPERATIONS Goltens’ diesel team arrived onsite with the most of the engine already disassembled by the powerhouse team. The team removed some remaining components from the engine, removed the foundation bolts from the engine and fit the 4 prefabricated …
Learn More Download Now
SCOPE OF REPAIR Goltens dispatched a team of Mechanical, Electrical & Instrument and Turbine Control experts to Bangladesh to carry out the scope of work assisted by local mechanics, riggers and fitters. Scope included: Preparation of special tools and replacement …
Learn More Download Now
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 …
Learn More Download Now
3D SCANNING LEVERAGED TO SPEED PROCESS Given the limited availability & questionable accuracy of the engineering data of the existing plant, customer was genuinely concerned about the cost and time needed for performing the upgrade design. To overcome this challenge …
Learn More Download Now
THE INSPECTION Goltens got the call on Sunday and engineers were on site the next day to evaluate the condition of the shaft and identify a repair method for the damage on the EDBG. Goltens undertook an inspection of main …
Learn More Download Now
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 …
Learn More Download Now
PROJECT FACTS Description: MAN B&W HUYNDAI 7L23/30H Location: Portugal – US (under voyage)
Learn More Download Now
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 …
Learn More Download Now
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. …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now
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 …
Learn More Download Now