200 MW USED DIESEL POWER PLANT

Plant Overview: The plant is a 200-MW LSHS (low sulphur heavy stock) fuel
(processed from the residue of indigenous crude). The plant is based on two-stroke
diesel engine technology from MAN B&W, Germany. There are 4 Units of 50 MW
each and the plant is in running condition with minimum self-breakdown
record. The plant was commissioned in the year 1999. The generator which is of
ABB make generates electricity at 11KV. The engines and equipment are water
cooled. A recirculation type cooling water system using fresh water with cooling
towers is provided. The engines are housed in a building with adequate
maintenance facilities like EOT Crane, hoists, etc. The main control room is also
located in this building. The engine room is provided with mechanical ventilation
system and the control room is air conditioned. The power plant has facilities for
unloading, storage and supply of fuel oil to the engines. Separate tanks for HFO
and LDO are provided. Water treatment facilities for cooling water system and to
produce demineralized water for the waste heat recovery boilers are provided.
Suitable Fire protection system to protect the equipment fire hazards is provided.

3
1) Technical Details
Type of Station Diesel
Station Capacity 200MW (4x50 MW)
Fuel LSHS & LDO
Transporation Ship, Cross Country pipe line
Consumption 810 Tonnes per day
Cooling Water Source Sewage Treatment Plant
Water Consumption Requirement 30 m3/hr
Chimney RCC Chimney with Flue height 100
mts
Design Heat Rate 18601 Kcal/Kwh

2) Main Engine

Manufacturer M/s Hyundai Heavy Industries Co. Ltd.
Engine Type HYUNDAI-MAN B&W,2-Stroke,single
acting, cross-head, exhaust turbocharged
type diesel engine
Model 12K90MC-S
Number of Cylinder 12
Cylinder Bore 900 mm
Stroke 2300 mm
At Max. continuous rating
Output 51480 kW
Revolution 103.4 rpm
Mean effective Pressure 17 bar
Max.Pressure 145 bar
Mean piston speed 145 m/s
Net Weight 1810 ton
Direction of rotation Clock wise, looking from aft
Cooling medium Cylinder Jacket ------- Fresh water
Piston ------- Lubricating oil
Turbocharger ------- Fresh water
Scav.air cooler ------- Raw water
Starting System Compressed air (Max. pressure 30 bar)

3) Plant Details
Major systems and equipment for mechanical, electrical, instrumentation
& control and civil works are given below:
Fuel oil System
FO transfer Pump
FO Supply Pump
FO Circulating Pump
FO Purifiers
FO Filters
FO Heaters
FO Sludge Pump
FO Drain Pump
Oily Water Separater
Engine room Pit Pump
HFO Treatment room Pit Pump
LDO Supply Pump
Oily Water Separater
HSD Unloding pump
HSD Transfer pump
Lube Oil System
CLO Unloading pump
CLO transfer pump
MLO Unloading pump
MLO Pump
Main lube oil cooler
Used lub oil transfer pump
Lube Oil Sludge system
Lube Oil Filters
Lube Oil Purifiers
Cam Shaft Lub oil Pump
Piston rod filter
Water System
Make up water pump
Cooling water transfer pump
Cooling tower
Air coolers
Jacket cooling water cooler
Jacket water pump
Jacket water preheater pump

Jacket water preheater
Potable water pump
Soft water pump
Air System
Air Compressor
Air tanks
Air drier
Ventilation System
Viscous filters
Air suction Fans
Turbo charger
WHRB
Boilers
Condenser
Boiler Water feed pump
Hot well tank
Exhaust System
C&I
Engine Safety Panel
Digital Engine Control
Distributed Control system
UPS
Paging System
PA System
CCTV System
Master Clock System
Stack Gas Analysers
VMON System
Oil Mist Detectors
Viscosity Meters
Alpha Lubricators
PMI System
Weigh Bridge
I&C systems summary
Electrical
Alternators
Excitation System
Jacking Oil System
Generator Cooling system
Generator Transformers
Unit Auxiliary transformers

Station Transformers
Service Transformers
Lighting Transformers
STP Transformer
HT Motors
Battery Chargers
Switchyard
110kv SF6 Breakers
CVT's
CT's
Line Isolators
Lightening Arestors
Wave Trap
Post Insulator
Tariff Meters
RTU & SCADA
Sewage Treatment Plant
Biological Section
Chemical Section
Reverse Osmosis Section
Post Treatment section
Fire Fighting System
Water Hydrant System
High Velocity Water spray system
Medium Velocity Water Spray system
Foam System
Carbon dioxide-Total floding system
Carbon Dioxde-Spurt System
Protable Fire Extinguishers
Fire Detection & alarm System
Cranes
Water Hydrant System

The main engines have been presently used only as a peaking
power plant and are very well maintained. These engines have
balance useful life of at least 20 years with proper maintenance
as recommended by OEM.