of 36
7/31/2019 L-2 Presentation Gen Mech Aux
1/36
7/31/2019 L-2 Presentation Gen Mech Aux
2/36
MECHANICAL AUXILIARY
SYSTEMS COMPRISES
FOLLOWING :
1. SEAL OIL SYSTEM
2. GAS SYSTEM
3. PRIMARY WATER SYSTEM
4. WASTE GAS SYSTEM
5. WASTE FLUID SYSTEM
7/31/2019 L-2 Presentation Gen Mech Aux
3/36
SEAL OIL SYSTEM IS DOUBLEFLOW TYPE, HAVING SEPARATE
HYDROGEN SIDE SEAL OIL CIRCUIT
AND AIR SIDE SEAL OIL CIRCUIT .
7/31/2019 L-2 Presentation Gen Mech Aux
4/36
ADVANTAGES OF DOUBLE FLOW SEAL OIL SYSTEM
PERFECT SEALING RESULTING TO BARE MIN.
HYDROGEN LOSS
BETTER HYDROGEN PURITY .
VACUUM TREATMENT OF THE SEAL OIL AND
RESULTING HYDROGEN LOSSES ARE AVOIDED.
7/31/2019 L-2 Presentation Gen Mech Aux
5/36
7/31/2019 L-2 Presentation Gen Mech Aux
6/36
HYDROGEN SIDE SEAL OIL CIRCUIT
SEAL OIL TANK
AC SEAL OIL PUMP
2X100% DUTY SEAL OIL COOLERS
DUPLEX OIL FILTER
DEFFERENTIAL PRESSURE
REGULATING VALVEPRESSURE EQUALISING VALVE EE
PRESSURE EQUALISING VALVE TE
7/31/2019 L-2 Presentation Gen Mech Aux
7/36
AIR SIDE SEAL OIL CIRCUIT
MAIN SEAL OIL PUMP DRIVEN
BY AC MOTOR
STANDBY SEAL OIL PUMP
DRIVEN BY AC MOTOR
EMERGENCY SEAL OIL PUMP
DRIVEN BY DC MOTOR
2X100% AIR SIDE COOLERS
7/31/2019 L-2 Presentation Gen Mech Aux
8/36
DUPLEX OIL FILTERDIFFERENTIAL PRESSURE
REGULATING VALVES
7/31/2019 L-2 Presentation Gen Mech Aux
9/36
SEAL OIL EQUIPMENTS
SEAL OIL SYSTEM EQUIPMENTS ARE
MOUNTED BASICALLY ON THE FOUR
UNITS
SEAL OIL UNIT
SEAL OIL PUMP MOTOR UNIT
SEAL OIL VALVE RACK
MEASURING INSTRUMENT RACK
7/31/2019 L-2 Presentation Gen Mech Aux
10/36
7/31/2019 L-2 Presentation Gen Mech Aux
11/36
7/31/2019 L-2 Presentation Gen Mech Aux
12/36
THE GAS SYSTEM
GAS UNIT
HYDROGEN DISTRIBUTORCO2 DISTRIBUTOR
NITROGEN DISTRIBUTOR
GAS DRIER
7/31/2019 L-2 Presentation Gen Mech Aux
13/36
7/31/2019 L-2 Presentation Gen Mech Aux
14/36
C02 SUPPLY
CO2 IS REQUIRED IN THE GENERATOR
TO CREATE AN INERT ENVIRONMENT IN
THE GENERATOR
CO2 AVAILABLE WITH A PURITY
GREATER THAN OR EQUAL TO 99.9%.
GAUGE PRESSURE:1-2.5 BAR
VOLUMETRIC FLOW RATE:144-216M3/HR.
7/31/2019 L-2 Presentation Gen Mech Aux
15/36
H2 SUPPLY
HYDROGEN SHALL BE AVAILABLE
WITH A PURITY LEVEL OF 99.9%
GAUGE PRESSURE: 8-9 BAR
VOLUMETRIC FLOW RATE:144-
216M3/HR.
CYLINDER CAPACITY:7M
3
.
7/31/2019 L-2 Presentation Gen Mech Aux
16/36
N2 SUPPLY
NITROGEN SHALL BE AVAILABLE WITH A
PURITY OF 99.9%.
NITROGEN IS REQUIRED FOR REMOVING
AIR ABOVE THE WATER LEVEL IN THE PW
TANK.
REMOVAL OF AIR ENSURES REMOVAL
OF OXYGEN DISSOLVED IN PRIMARY
WATER THUS ELIMINATING RISK OF
CORROSION.
7/31/2019 L-2 Presentation Gen Mech Aux
17/36
7/31/2019 L-2 Presentation Gen Mech Aux
18/36
7/31/2019 L-2 Presentation Gen Mech Aux
19/36
TECHNICAL DATA
MEDIUM: HYDROGEN
FLOW RATE: 50 M3/HR.
DEW POINT OF OUTLET GAS: (-) 40 DEG C
SILICA GEL FILLING: 19KG/ TOWER
ABSORPTION TIME: 8 HOURS
REGENERATION TIME: 3.5HOURS
HEATER RATING: 3KW, 415V
TOWER SIZE: DIA219.1X750
NO. OF DESSICANT TOWERS: TWO
7/31/2019 L-2 Presentation Gen Mech Aux
20/36
DESIGN PERSSURE: 10 BAR
HEIGHT OF DESSICANT COLUMN: 750 MM
CONTACT TIME OF HYDROGEN 4.7 SEC.
WITH DESSICANT:
PRESSURE DROP ACROSS 40 MMWC
DESSICANT BED:
AIR BLOWER CAPACITY: 90 M3/HR.,100-50MBAR
7/31/2019 L-2 Presentation Gen Mech Aux
21/36
THE PRIMARY WATER SYSTEM
PRIMARY WATER PUMP & FILTERUNIT
PRIMARY WATER COOLER UNIT
PRIMARY WATER TANK
PRIMARY WATER MEASURINGINSRUMENT RACK
ALKALYSER UNIT
7/31/2019 L-2 Presentation Gen Mech Aux
22/36
THE PRIMARY WATER PUMP
& FILTER UNIT COMRISES OF
THE FOLLOWING
COMPONENTS :
PRIMARY WATER PUMPSPRIMARY WATER FILTERFINE FILTERMIXED BED ION EXCHANGERFLOW METER
PRESSURE GAUGECONDUCTIVITY
TRANSMETTER
VALVES
7/31/2019 L-2 Presentation Gen Mech Aux
23/36
PRIMARY WATER SYSTEM
1. PRIMARY WATER TANK
2. PRESSURE REGULATOR
3. WASTE GAS EXIT
4. PUMP
5. COOLER
6. FILTER7. ION EXCHANGER
8. ALKALISATION UNIT
9. BYPASS LINE
10. C.W. FOR STATOR WINDI
11. C.W. FOR BUSHINGS
12. WATER TREATMENT13. TEFLON HOSE
14. C.W. MANIFOLD
7/31/2019 L-2 Presentation Gen Mech Aux
24/36
7/31/2019 L-2 Presentation Gen Mech Aux
25/36
7/31/2019 L-2 Presentation Gen Mech Aux
26/36
7/31/2019 L-2 Presentation Gen Mech Aux
27/36
7/31/2019 L-2 Presentation Gen Mech Aux
28/36
7/31/2019 L-2 Presentation Gen Mech Aux
29/36
7/31/2019 L-2 Presentation Gen Mech Aux
30/36
7/31/2019 L-2 Presentation Gen Mech Aux
31/36
THE WASTE GAS SYSTEM
COMPRISES OF THE
FOLLOWING COMPONENTS :
VAPOUR EXHAUSTERSVACUUM SWITCHES
VALVES
7/31/2019 L-2 Presentation Gen Mech Aux
32/36
7/31/2019 L-2 Presentation Gen Mech Aux
33/36
7/31/2019 L-2 Presentation Gen Mech Aux
34/36
THE WASTE FLUID SYSTEM
COMRISES OF THE
FOLLOWING COMPONENTS :
DRAIL OIL COLLECTORLEVEL SWITCHVALVES
7/31/2019 L-2 Presentation Gen Mech Aux
35/36
7/31/2019 L-2 Presentation Gen Mech Aux
36/36