Fuel Oil Pipe Insulation; Fuel Oil Pipes And Heating Pipes Together; Flanges And Valves - Man B&W S50MC-C8-TII Project Manual

MAN B&W

Fuel Oil Pipe Insulation

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-
fied and approved by the respective classification
society and/or authorities, Fig. 7.04.0.
The directions mentioned below include insulation
of hot pipes, flanges 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 specific purpose, reference is
made to the respective classification society.
Fuel oil pipes
The pipes are to be insulated with 20 mm mineral
wool of minimum 50 kg/m
glass cloth of minimum 400 g/m

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
covered with glass cloth of minimum 400 g/m
Fig. 7.04.01: Details of fuel oil pipes insulation, option: 4 35 121. Example from 98-50 MC engine
MAN B&W MC/MCC, ME/ME-C/ME-GI/ME-B engines,
Engine Selection Guide
and covered with
3
.
2
.
2
MAN Diesel

Flanges and valves

The flanges and valves are to be insulated by
means of removable pads. Flange and valve pads
are made of glass cloth, minimum 400 g/m
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 fitted so that they lap over the
pipe insulating material by the pad thickness. At
flanged joints, insulating material on pipes should
not be fitted 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.
3
7.04
Page  of 3
,
2
178 50 65 0.2
198 40 518.3