Norwegian Cruise Line upgrades engine insulation
Engine insulation retrofits from MAN PrimeServ will ensure that four-stroke engines onboard nine Norwegian Cruise Line ships are compliant with impending SOLAS regulations regarding hot surfaces.
The order covers the equipping of 44 engines, each with an output of over 375kW, with heat insulation, spray protection and resistance to flammability and fluid density. The engines comprise MAN 48/60B, 48/60A and 58/64 types, and the project will be completed in 2018.
Thomas Spindler, head of upgrades and retrofits, MAN PrimeServ Four-Stroke, said: “Planning the execution of the insulation upgrade such that it takes place without disruption to normal cruise schedules is a key element of this order; indeed, we have already started with the first Norwegian Cruise Line vessel. This is a very significant order for MAN PrimeServ, and I am certain it will not be the last as we are currently holding negotiations with other parties within this segment.”
SOLAS regulation II-2/15.2.10 requires that ‘all surfaces with temperatures above 220°C which may be impinged as a result of a fuel system failure shall be properly insulated’. The purpose of insulating hot surfaces is to prevent any flammable liquid from getting in contact with such surfaces, thereby minimising the risk of ignition in case of a leakage. Ships that were built before 2003 are not SOLAS-compliant and have to be upgraded.
To ensure conformity with SOLAS, MAN PrimeServ has examined engine insulations and heat shielding after certain service periods over many years. Results have shown that the MAN engines’ original SOLAS insulation displayed neither abrasive spots from operation nor any spots soaked with fluid or impermissible heat leakages.
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