DUAL FUEL MODIFICATION OF WARTSILA 18V46 IN SITU MACHINING MODIFICATION AS PART OF COMPLETE BLOCK REPLACEMENT

PROJECT FACTS:
Engine Type: Wartsila 18V46
Bore and Stroke: 460 / 580 mm
Length and weight of block: 12.3 M / 82 MT
Max Power and RPM: 18,900 KW / 514 RPM

DUAL FUEL MODIFICATION
OF WARTSILA 18V46
IN SITU MACHINING MODIFICATION AS PART
OF COMPLETE BLOCK REPLACEMENT
When a Bangladeshi power plant’s Wartsila 18V46 engine
block was damaged beyond repair, Goltens was contracted
to replace it and to overhaul and modify the replacement
block to run on Gas as well as MDO and HFO. Goltens
located and inspected a similar engine block in a power
plant in the Philippines and sent it to Goltens’ workshop in
Singapore for a full overhaul and machining modifications.
All modifications were completed utilizing Goltens’ In-Situ
machining tools.
REPAIRS CONSISTED OF:
• Calibration and NDT performed on all liner, fuel pump
and main bearing landing surfaces.
• Laser alignment and full calibration on all main bearing
pockets.
• In-Situ grinding of all liner landing surfaces.
• In-Situ machining of 3 lower liner landing surfaces
• Fabrication of new bushes, shrink fitting and securing of
new bushes for the lower liner landings.
• In-situ machining of all fuel pump bores to
accommodate the gas fuel pump body design.
• Supplied new soft iron bushes for the liner landing
surfaces
• In-Situ milling of locating key way and in-situ drilling of
location pinhole for new fuel pump design.
• Full blasting and painting, under paint manufacturer
supervision and procedures.
• Final inspection and Engine commissioning
RESULTS:
This was a very challenging assignment due to the short
timeframe committed to the customer. All machining jobs
were completed on schedule, working around the clock with
2 teams for 14 days.
The job was inspected and approved by owner’s appointed
surveyor. The block was then shipped to Bangladesh, as
sole cargo aboard a vessel that Goltens had coincidently
just completed a major main engine overhaul on.