MAN B&W
12.05
Page 1 of 1
MAN Diesel
MAN B&W MC/MCC, ME/MEC/MEGI/ME-B engines
198 38 948.6
PT 8413 I
LS 8412 AL
Jacket cooling water
Sea water
Fuel oil
The letters refer to list of ‘Counterflanges’, Fig. 5.10.01
Venting pipe or automatic
venting valve to be arranged
in one end of discharge pipe.
(Opposite end of discharge
to pump)
Tracing of fuel oil
drain pipe
Drain from bedplate/cleaning
turbocharger to waste tank
M
L
AF
*) BD
AH
AN
K
AE
AE
Main
engine
Alarm must be given if excess air
is separated from the water in the
deaerating tank
Orifice for adjustment of
cooling water pressure
PI
TI
TI
TI
PI
Preheater
Jacket water pumps,
3 bar head
Water inlet for
cleaning turbocharger
Fresh cooling water drain
Expansion tank
Low level alarm
Alarm device box,
see Fig. 12.07.02
Normally closed valve.
To be opened when the
system is filled with
cooling water. (Manually
or automatically)
Freshwater
generator
Jacket water
cooler
Deaerating tank,
see Fig. 12.07.01
From tracing of fuel oil drain pipe *)
High level alarm
Regulating valve
Preheater pump
*) Flange BD and the tracing line are not applicable on MC/MCC engines type 42 and smaller
Jacket Cooling Water System
The jacket cooling water system is used for cool-
ing the cylinder liners, cylinder covers and ex-
haust valves of the main engine and heating of the
fuel oil drain pipes, see Fig. 12.05.01.
The jacket water pump) draws water from the
jacket water cooler outlet and delivers it to the
engine.
At the inlet to the jacket water cooler there is a
thermostatically controlled regulating valve, with
a sensor at the engine cooling water outlet, which
keeps the main engine cooling water outlet at a
temperature of 80 °C.
The engine jacket water must be carefully treated,
maintained and monitored so as to avoid corro-
sion, corrosion fatigue, cavitation and scale for-
mation. It is recommended to install a preheater
if preheating is not available from the auxiliary
engines jacket cooling water system.
The venting pipe in the expansion tank should end
just below the lowest water level, and the expan-
sion tank must be located at least 5 m above the
engine cooling water outlet pipe.
The freshwater generator, if installed, may be con-
nected to the seawater system if the generator
does not have a separate cooling water pump.
The generator must be coupled in and out slowly
over a period of at least 3 minutes.
For external pipe connections, we prescribe the
following maximum water velocities:
Jacket water ................................................ 3.0 m/s
Seawater ..................................................... 3.0 m/s
Fig. 12.05.01: Jacket cooling water system
178 50 172.5
Summary of Contents for B&W S50MC-C8-TII
Page 4: ......
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Page 19: ...MAN B W MAN Diesel Engine Design 1 ...
Page 20: ......
Page 35: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
Page 36: ......
Page 52: ......
Page 64: ......
Page 65: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
Page 66: ......
Page 72: ......
Page 73: ...MAN B W MAN Diesel Electricity Production 4 ...
Page 74: ......
Page 106: ......
Page 107: ...MAN B W MAN Diesel Installation Aspects 5 ...
Page 108: ......
Page 146: ......
Page 170: ......
Page 171: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
Page 172: ......
Page 192: ......
Page 193: ...MAN B W MAN Diesel Fuel 7 ...
Page 194: ......
Page 208: ......
Page 209: ...MAN B W MAN Diesel Lubricating Oil 8 ...
Page 210: ......
Page 223: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
Page 224: ......
Page 233: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
Page 234: ......
Page 236: ......
Page 237: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
Page 238: ......
Page 243: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
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Page 255: ...MAN B W MAN Diesel Starting and Control Air 13 ...
Page 256: ......
Page 262: ......
Page 263: ...MAN B W MAN Diesel Scavenge Air 14 ...
Page 264: ......
Page 276: ......
Page 277: ...MAN B W MAN Diesel Exhaust Gas 15 ...
Page 278: ......
Page 292: ......
Page 293: ...MAN B W MAN Diesel Engine Control System 16 ...
Page 294: ......
Page 309: ...MAN B W MAN Diesel Vibration Aspects 17 ...
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Page 325: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
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Page 349: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
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Page 389: ...MAN B W MAN Diesel Project Suppport and Documentation 20 ...
Page 390: ......
Page 399: ...MAN B W MAN Diesel Appendix A ...
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