Capítulo 3. Formas del conocimiento: filosofía y poesía
3.3 Filosofía, ingenio y el «poder de la fantasía»
3.3.4 El mundo en la palabra
a) Ensure that pressure gauges and instrumentation valves are open and that instruments are reading correctly.
b) Ensure that cooling fresh water from the central cooling fresh water system is circulating through the dump condenser/drain cooler.
c) Set up the valves as in the following table:
position description Valve
Operational Steam dump valve T-22V
Operational Condensate return three-way valve T-25V Closed Dump condenser/drain cooler drain valve
Closed Inspection tank scum valve T-2V
Closed Inspection tank drain valve T-3V
Open Inspection tank outlet valve to feed filter tank T-1V
Open Feed filter tank drain valve T-4V
d) The various condensate return services may now be brought into operation as required, by opening the associated steam trap outlet valve.
Excessive temperature at the drains cooler would indicate a defective drain trap. Services should be isolated in turn until the defective trap is located. An abnormally hot return line from a drain trap would indicate that the trap was passing steam and so was defective.
Maersk Seletar Machinery Operating Manual
Illustration 2.3.1b Condensate System Outside the Engine Room
T-101V To / From Accommodation
(AC Room)
CondensateTo System
No.6 Side Fuel Oil Tank (Port)
No.6 Inner Low Sulphur Fuel Oil Tank (Port)
EngineTo SystemsRoom
Key
Steam 6kg/cm2 Condensate From Boilers
Starboard Passageway Port Passageway
No.6 Cargo Hold No.7 Cargo Hold
Engine Room No.5 Cargo Hold
CondensateTo System
T-194V
HC-21 HC-22
HC-27 HC-26
HC-28
HC-19 HC-18
HC-29 HC-30
HC-24 HC-23
HC-20
HC-25 HC-31
HC-17 HC-16
No.6 Side Fuel Oil Tank (Starboard) No.6 Inner Fuel Oil Tank (Starboard)
HC-04 HC-05 HC-11
HC-12
HC-01 HC-02 HC-06
HC-07 HC-08
HC-03 HC-32 HC-14 HC-15 HC-10
HC-09 HC-13 T-193V
Plan View
Heating Coil at Suction Bellmouth Heating Coil
at Suction Bellmouth Heating Coil at Suction Bellmouth Heating Coil
at Suction Bellmouth
ReeferTo and M.Eng J.W.Heaters
CalorifierTo T-102V
Maersk Seletar Machinery Operating Manual
service steam system
description Valve
Oil fired boiler heating condensate valve (boiler fitting) C25
Oil fired boiler heating condensate valve T-26V
Exhaust gas boiler heating condensate valve (boiler fitting) V27 Exhaust gas boiler heating condensate valve T-28V Accommodation air conditioning heater condensate valve T-102V Reefer cooling water heater condensate valve T-105V Main engine cooling water preheater condensate valve T-198V Main lubricating oil settling tank heating condensate valve T-111V Accommodation water heating heater condensate valve T-108V
Calorifier heating condensate valve T-116V
No.1 fuel oil heater condensate valve T-130V
No.2 fuel oil heater condensate valve T-132V
Fuel oil service line trace heating condensate
Fuel oil auto blowdown filter condensate valve T-134V Fuel oil auto blowdown filter condensate valve T-136V No.1 generator LO separator heater condensate valve T-156V No.2 generator LO separator heater condensate valve T-149V
Main LO separator heater condensate valve T-153V
No.1 HFO separator heater condensate valve T-159V No.2 HFO separator heater condensate valve T-162V No.3 HFO separator heater condensate valve T-166V
Boiler waste oil heater condensate valve T-172V
Boiler fuel oil heater inlet valve T-174V
Sludge tank condensate valve T-126V
Boiler waste oil tank condensate valve T-139V
HFO service tank condensate valve T-120V
HFO settling tank condensate valve T-124V
LSHFO service tank condensate valve T-184V
LSHFO settling tank condensate valve T-188V
HFO overflow tank condensate valve T-192V
Main engine fuel oil tracing steam condensate valve T-144V Main engine fuel oil tracing steam condensate valve T-145V
Oily bilge tank (clean) condensate valve T-178V
Oily bilge tank (dirty) condensate valve T-176V
Main engine LO sump tank condensate valve T-180V
tracing steam system
description - all tracing steam condensate valves Valve Sludge pump suction line
HFO transfer line to bunker tanks starboard HFO transfer line to bunker tanks port HFO transfer line
HFO transfer line HFO transfer line HFO transfer line HFO transfer line Cylinder oil transfer line HFO transfer line HFO transfer line Fuel oil separating line Boiler fuel oil service line
Fuel oil auto blowdown filter drain line Fuel oil auto blowdown filter drain line Fuel oil service line
Boiler waste oil line HFO transfer line HFO transfer line HFO transfer line Boiler fuel oil line Boiler fuel oil line Fuel oil service line Fuel oil service line Fuel oil separating line Fuel oil separating line Fuel oil separating line Fuel oil separating line
Bilge deck/shore discharge line Bilge deck/shore discharge line Bilge shore discharge line HFO bunkering line HFO bunkering line
fuel oil bunker tank heating system
description - all tanks prefixed no.6 Valve
Starboard HFO side tank condensate drain valve HC-03 Starboard HFO side tank heating coil condensate valve HC-01 Starboard HFO side tank heating coil and bellmouth condensate
valve
HC-02
Starboard HFO side tank drain valve HC-32
Starboard HFO side tank heating coil condensate valve HC-15 Starboard HFO side tank heating coil and bellmouth condensate
valve
HC-14 Port LSHFO side tank condensate drain valve HC-25 Port LSHFO side tank heating coil condensate valve HC-21 Port LSHFO side tank heating coil and bellmouth condensate
valve
HC-22
Port HFO side tank condensate drain valve HC-31
Port HFO side tank heating coil condensate valve HC-29 Port HFO side tank heating coil and bellmouth condensate valve HC-30
e) At intervals check the drain trap line valves to ensure that the temperature return is not abnormal; this will indicate a failed drain trap.
Maersk Seletar Machinery Operating Manual
TIAHMC TX
TI O.D
TC
V11 V12
V10 Exhaust Gas Boiler Feed
Water Control Panel
Engine Control
Room PX
PIAHL MC
DPX
PIAHL PX MC
PC
To 6kg/cm2 Steam System (See Illustration 2.2.4a
Engine Room Steam System)
V1 V1 LT Cooling
Water Inlet
Dump Condenser / Drain Cooler
W-28V W-29V
PS
LT Cooling Water Outlet
T-84V T-86V
PI
ControlFrom Panel
Auxiliary Boiler (4,300kg/h x 6kg/cm2)
Illustration 2.3.2a Boiler Feed Water System
Key
Feed Water/Condensate Steam 6kg/cm2 LT Cooling Water Bilge / Drain Electrical Signal Compressed Air
Exhaust Gas Boiler (3,000kg/h x 6kg/cm2)
Feed Filter Tank (2.0m3)
Boiler Feed Water Pumps (7.8m3/hx12.5kg/cm2) Oil Detector
T-7V To Bilge Holding Tank Boiler
Sample Cooler ControlFrom
Panel
Chemical Dosing Unit
Chemical Dosing Unit From FW
Hydrophore System
Filter Panels
To Bilge Holding Tank From6kg/cm2
Steam System
Engine RoomFrom Condensate
System
From Distilled
Water Tank T-3V
SAH
Steam Dump Valve 6.6kg/cm2 T-22V
D-54V
T-82V
T-8V T-9V
T-35V
V21 V21
D-49V Dosing Unit Filter Panels
Steam Injector
Note: Is float valve fitted ?
Main Feed Water Line Auxiliary Feed Water Line Set 90°C
No.2 No.1
Maersk Seletar Machinery Operating Manual
2.3.2 boiLer feed Water systeM boiler feed Water pumps
Manufacturer: Shinko
No. of sets: 2
Model: SHQ50MH
Type: Centrifugal
Capacity: 7.8m3/h at 12.5kg/cm2
introduction
The boiler feed water system is the section of the steam generating plant which circulates feed water from the feed filter tank into the oil fired auxiliary boiler and the exhaust gas boiler via the boiler feed water pumps and the feed water regulators.
The feed water flow to each boiler is automatically controlled by the feed water regulating valve in accordance with the variation in water level in the boiler to maintain a constant water level.
Two boiler feed pumps take suction from the feed filter tank and supply the boilers at a rate of 7.8m3/h and a pressure of 12.5kg/cm2. The feed pumps supply the oil fired auxiliary boiler and the exhaust gas boiler through both main and auxiliary feed lines. The main line to each boiler is fitted with a feed water regulating valve to control the flow of water into the boiler in order to automatically maintain the correct water level. The auxiliary feed lines provide for direct feed supply and manual control of the water level in the boiler if required.
A small amount of water is directed back to the feed filter tank from each feed pump outlet before the feed pump discharge valve; the discharge line to the feed filter tank has an orifice plate in order to reduce the water pressure and limit the flow. This discharge ensures that there is always water circulating through and cooling the operating feed pump, even when the boiler feed control valve is closed.