Actran identified and solved factory noise problem
... of Vassa, Finland near one of the company's main large 4-stroke engine factories. The facility produces about 500 ship engines per year, and every engine is subjected to a test run. When they measured sound levels, they found that the likely source of the disturbance was exhaust noise produced by a 1,000-hour endurance test which runs continuously at 750 rpm. That's a lot of noise, and the noise had to be reduced at night while the test still ran nonstop... Read more and learn how Actran helped Wärtsilä identify and solve this noise problem here.