MAN B&W 7.04
Page of 3
MAN Diesel
198 40 518.3MAN B&W MC/MCC, ME/ME-C/ME-GI/ME-B engines,
Engine Selection Guide
Fuel Oil Pipe Insulation
Flanges and valves
The anges and valves are to be insulated by
means of removable pads. Flange and valve pads
are made of glass cloth, minimum 400 g/m
2
,
containing mineral wool stuffed to minimum 50
kg/m
3
.
Thickness of the pads to be:
Fuel oil pipes ................................................ 20 mm
Fuel oil pipes and heating pipes together ....30 mm
The pads are to be tted so that they lap over the
pipe insulating material by the pad thickness. At
anged joints, insulating material on pipes should
not be tted closer than corresponding to the
minimum bolt length.
Mounting
Mounting of the insulation is to be carried out in
accordance with the supplier’s instructions.
Insulation of fuel oil pipes and fuel oil drain pipes
should not be carried out until the piping systems
have been subjected to the pressure tests speci-
ed and approved by the respective classication
society and/or authorities, Fig. 7.04.0.
The directions mentioned below include insulation
of hot pipes, anges and valves with a surface
temperature of the complete insulation of maxi-
mum 55 °C at a room temperature of maximum 38
°C. As for the choice of material and, if required,
approval for the specic purpose, reference is
made to the respective classication society.
Fuel oil pipes
The pipes are to be insulated with 20 mm mineral
wool of minimum 50 kg/m
3
and covered with
glass cloth of minimum 400 g/m
2
.
Fuel oil pipes and heating pipes together
Two or more pipes can be insulated with 30 mm
wired mats of mineral wool of minimum 50 kg/m
3
covered with glass cloth of minimum 400 g/m
2
.
Fig. 7.04.01: Details of fuel oil pipes insulation, option: 4 35 121. Example from 98-50 MC engine
178 50 65 0.2
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