This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W 7.04<br />
Fuel Oil Pipe Heat Tracing<br />
The steam tracing of the fuel oil pipes <str<strong>on</strong>g>is</str<strong>on</strong>g> intended<br />
to operate in two situati<strong>on</strong>s:<br />
1. When the circulati<strong>on</strong> pump <str<strong>on</strong>g>is</str<strong>on</strong>g> running, there<br />
will be a temperature loss in the piping, see<br />
Fig. 7.04.02. <str<strong>on</strong>g>Th<str<strong>on</strong>g>is</str<strong>on</strong>g></str<strong>on</strong>g> loss <str<strong>on</strong>g>is</str<strong>on</strong>g> very small, therefore<br />
tracing in th<str<strong>on</strong>g>is</str<strong>on</strong>g> situati<strong>on</strong> <str<strong>on</strong>g>is</str<strong>on</strong>g> <strong>on</strong>ly necessary with<br />
very l<strong>on</strong>g fuel supply lines.<br />
BX<br />
BF<br />
X<br />
F<br />
Cyl. 1<br />
Fuel valve<br />
Fuel pump<br />
The letters refer to l<str<strong>on</strong>g>is</str<strong>on</strong>g>t of ‘Counterflanges’<br />
Fig. 7.04.03: Fuel oil pipe heat tracing<br />
<strong>MAN</strong> B&W K98MC/MC�C, K98ME/ME-C, S90MC-C, S90ME-C,<br />
K90MC-C, K90ME/ME-C, S80MC/MC-C, S80ME-C, K80MC-C,<br />
K80ME-C, S70MC, S/L70MC-C, S/L70ME-C, S70ME-GI, S65ME-GI,<br />
S60MC, S/L60MC-C, S/L60ME-C, S60ME-B, S60ME-GI, S50MC,<br />
Engine Selecti<strong>on</strong> Guide<br />
Shock absorber<br />
Fuel Oil and Lubricating Oil Pipe Spray Shields<br />
In order to fulfil IMO regulati<strong>on</strong>s, fuel oil and lubricating<br />
oil pipe assemblies are to be enclosed by<br />
spray shields as shown in Fig. 7.04.04a and b.<br />
<strong>MAN</strong> <strong>Diesel</strong><br />
Drain cyl. frame<br />
See drawing<br />
Fuel oil pipes insulati<strong>on</strong><br />
Anti�splashing tape Clamping bands<br />
The tape <str<strong>on</strong>g>is</str<strong>on</strong>g> to be wrapped in accordance with<br />
the makers instructi<strong>on</strong> for class approval<br />
Fig. 7.04.04a: Spray Shields by anti-splashing tape<br />
L<br />
AF<br />
AD<br />
BD<br />
Page 3 of 3<br />
2. When the circulati<strong>on</strong> pump <str<strong>on</strong>g>is</str<strong>on</strong>g> stopped with<br />
heavy fuel oil in the piping and the pipes have<br />
cooled down to engine room temperature, as<br />
it <str<strong>on</strong>g>is</str<strong>on</strong>g> not possible to pump the heavy fuel oil.<br />
In th<str<strong>on</strong>g>is</str<strong>on</strong>g> situati<strong>on</strong> the fuel oil must be heated to<br />
pumping temperature of about 50 ºC.<br />
To heat the pipe to pumping level we recommend<br />
to use 100 watt leaking/meter pipe.<br />
Overlap<br />
Plate 0,5 mm. thickness<br />
The width <str<strong>on</strong>g>is</str<strong>on</strong>g> to cover<br />
head of bolts and nuts<br />
Fig. 7.04.04b: Spray Shields by clamping bands<br />
Fresh cooling<br />
water outlet<br />
178 50 62�5.0<br />
To avoid leaks, the spray shields are to be installed<br />
after pressure testing of the pipe system.<br />
178 52 55�5.2<br />
198 67 68-4.1
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