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REPORT ON INDUSTRIAL VISIT
TO
GAS POWER PLANT
AT URAN















1



ACKNOWLEDGMENT



We would give to say our great sincere
thanks towards our guide Mrs. Jeesha Satheesh
for introducing the subject & allow us to do our
project in field of power plant engineering. Her
constant guidance support and encouragement
contributes very much in our efforts for
completing this project.

We would like to express our gratitude
towards our head of department Mr. M. V. Bhatkar
for his support and encouragement towards us.

We want to take this opportunity to give
our thanks to EESA head and all those who have
engaged in this committee an all the members
and of course batch member’s discussion with
them helped us to and many concept.

Lastly we want thanks to them who helped
us directly to complete this report.







2







Uran Gas Turbine Power Station



1. Postal Address of the Office/Power Station (Phone No. /Fax No.)
Office of the Chief General Manager,
Gas Turbine Power Station, and Uran
At/Post: Bokadvira, Tal: Uran,
District - Raigad. Pin-400 702, (Maharashtra State) India
Phone: (022) 27222285, Fax: 0091-22-27221157
Gram:"Powergrid, Uran", Email: cegtpsuran@mahagenco.in








3


Uran


Location: Maharashtra

Operator: Maharashtra State Power Generation Co Ltd

Configuration: 4 X 60 MW V93 GT (Unit-1 scrapped 2003), 2 X 336-
MW, 2+1 CCGT blocks withV94.2 gas turbines

Fuel: natural gas, oil

Operation: 1982-1994
HRSG supplier: Deutsche Babcock
T/G supplier: Siemens

EPC: Siemens, Lahmeyer, Tata

Quick facts: Uran power station is near Bokadvira Village, 1km away
from Uran town and 55Km from Mumbai by road. The site is
surrounded on three side by the Arabian Sea. Uran cost about Rs
1,118.5 Crores. Grid connection is by 4 X 220Kv lines to Apta S/S and
2 X 220kV lines to Kharghar S/S.

Commissioning Date.
Unit
Capacity (MW)
Date
2 60
29/03/82
3 60
26/05/82
4 60
21/07/82
5 108
10/10/85
6 108
02/08/85
7 108
17/06/85
8 108
15/01/86
A0 120
11/03/94
B0 120
28/10/94

4

Performance
Unit-wise Generation (Since commissioning)

Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Gen.
Details




MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs
MUs














UNIT- UNIT- UNIT- UNIT- UNIT- UNIT- UNIT-
UNIT- UNIT-
Units UNIT-I
Total
Total
Station
II
III
IV
V
VI
VII
VIII
A0
B0
81-82
1.888
0.037

1.925

1.925
82-83
283.783
266.722
264.173
246.951

1061.629

1061.629
83-84
380.333
412.82
397.226
404.147

1594.526

1594.526
84-85
298.077
362.856
219.769
414.282

1294.984

1294.984
85-86 199.146 133.62 186.135 33.365 68.992 203.529
255.88 48.806 1129.473



1129.473
86-87 54.336 96.169
23.483
285.226
527.416 498.152 544.065
553.07 2581.917



2581.917
87-88 25.06
254.451
303.124
143.671
503.5
517.067 370.545
444.2 2561.618



2561.618
88-89 204.205 214.376 163.609 179.774 234.111 484.342
81.763 360.785 1922.965



1922.965
89-90 241.368 71.326
380.025
216.927
613.81 75.98 715.605
159.55 2474.591



2474.591
90-91 70.213 0 242.634
247.207 375 601.51
633.668 562.243 2732.475

2732.475
91-92
0
315.241 199.815 333.46 566.768 543.188 408.467 552.806 2919.745

2919.745
92-93
0
299.961 288.573 209.975 414.597 360.103 533.505 513.134 2619.848

2619.848
93-94
159.279
169.986
276.393 0 195.627 202.543 532.461 189.234 1725.523
1.602 1.602
1727.125
94-95
3.871 58.447 207.634 58.885 760.023 600.891 649.829 599.641 2939.221 516.341 204.398 720.739 3659.96
95-96
0
267.997 171.226 210.788 688.397 792.801 583.248 709.897 3424.354 739.614 711.096 1450.71 4875.064
96-97
0
162.065 154.624 155.974 884.189 738.083 750.575 465.167 3310.677
874.75 282.905 1157.655 4468.332
97-98
0
104.179 129.696 132.771 738.731 747.644 805.238 741.346 3399.605 774.938 829.276 1604.214 5003.819
98-99
0
105.421 118.878 18.917 832.948 799.313 757.988 749.906 3383.371 885.338 840.146 1725.484 5108.855
99-00
0
39.222 26.692 1.465 632.974
703.86 581.31 569.679 2555.202 736.462 643.986 1380.448
3935.65
00-01 0 17.668
30.382
0.013
705.2
640.378 289.909
575.42 2258.97 751.957
462.197
1214.154 3473.124
01-02
0
65.546 73.966 5.676 644.299 558.979 518.582 569.639 2436.687 638.269 616.794 1255.063
3691.75
02-03 0 15.03
45.561
11.429
732.818 858.701 469.188 431.378 2564.105 822.487 504.576 1327.063 3891.168
03-04 Scrapped 6.817 38.962 37.115 712.433
686.42 681.778 517.282 2680.807
702.74 622.684 1325.424 4006.231
04-05 Scrapped 0.679 17.95 3.402 547.743 821.489 647.459 629.801 2668.523 714.254 732.392 1446.646 4115.169
05-06 Scrapped 12.211 30.701 3.677 660.362 665.357 486.519 600.353
2459.18 697.142 621.17 1318.312 3777.492
06-07 Scrapped 7.674 0.894 1.436 689.397 855.751 581.677
463.04 2599.869 839.176 588.841 1428.017 4027.886


5

1. INTRODUCTION

Probably a windmill was that first turbine to produce
useful work, wherein there is no pre compression and no
combustion. The characteristic features of a gas turbine as we
think of the name today include a compression process and a
heat addition process.




The gas turbine represent perhaps the most satisfactory way
of producing large amount of power in very small area. The efficiency of
gas turbine is 20 to 30 % which is improved by installing steam power
plant with gas plant (combine plant) to 45% or more.

Same case is accrue in Uran gas plant initially only gas
plant are installed the capacity is 4 X 60 MW V93 GT and due to some
reasons one of them was scrapped in 2003 and before few days
combine cycle plant are installed the capacity is 2+1 CCGT blocks
withV94.2 gas turbines.
The total capacity of plant right now is
792MW.

The main advantages for Uran gas power plant is that , the
some amount of fuel gas is obtain from Bombay high it menace some
amount of gas is obtain from nearest site only as well as due to
excessive amount of gas production the gas agencies burnt the gas in
atmosphere so this gas is utilized to generate the electricity where there
is a shortage is created of electricity. And remaining fuel is imported
from Oman.

6


2. The Gas Turbine Advantage

Since the no equipment used in gas plant is less compare to
thermal plant, the capital cost considerably less. As well as the
space requirement by machinery is less.

► The vibration created by gas turbine is less because of perfect
balancing of turbine blades, so the losses accrue by vibration is
very less which give higher mechanical efficiency.

► The pollution created by plant is very less compare to thermal
plant, because the ash is absent in power production process
as well as the carbon emission is very less. Carbon emission by
different plant is shown in graph bellow. In the graph, carbon
emission by gas plant is comparatively less.





► The site of the steam plant is dictated by the availability of large
cooling water where as an open cycle gas turbine plant can be located
near the load center as no cooling water is required. The cooling water
required for close cycle gas turbine is hardly 10% of the steam plant.

7

► The gas power plant can work quit economically for short running
hours because steam plant required 3-4 days to start and gas plant
required 1 day to start.

►Since the gas turbine fuel is easily gasified and liquefied, the storage
of fuel is much smaller and handling is easy.


►Gas turbines plant can be built relatively quicker. They required much
less space and civil engineering works and water supply.

► The gas turbine plants can be installed at selected load center as
space requirement is considerably less where steam plant cannot be
accommodate.

► Above 550°C, the thermal efficiency of the gas turbine plant
increases three times as fast the steam cycle efficiency for a given top
temperature increase.



3. Disadvantages

► Poor part load efficiency.

► Since the turbine parts are subjected to extremely high temperature
special metals and alloy are required for different component of the
plants.

► The temperature at turbine blades is too much high so special
cooling method are required for cooling the turbine blades.

► The rate of wear and tear of turbines is too much high therefore it
has small operating life as well as it require high maintenance.7

► It require some external rotating energy to start up the compressor.
In Uran gas plant one diesel generator set (DG set) is installed.

8


4. Reasons to install the plant in Uran



► As we know the plant should be located near to load center to avoid
transmission costs and losses. Here Uran plant is located near to Apta
substation as well as Kharghar substation so transmission cost is
decreases and transmission efficiency increases.


► The population in Uran especially near to the plant site is very less
as well as there is no business center is located near to plant. We can
say that the plant is located in remote place.


► Uran is surrounded on three sides by Arabian Sea so fuel
transportation is very easy and cheap as well as gas is alredy installed
between Bombay high and Uran plant.


► The local people of Uran are easily available as labours at low
salaries.


► Uran is 55Km from Mumbai by road as well as it is located near to
Mumbai-Pune highway. So transportation of auxiliaries will be easy
and more economical.


► The cost of land in Uran is 2000Rs/sq.ft (approx) which is very low
compare to any other place in harbor side.


► The bearing capacity of the land in Uran is high, because the land is
quit rocky.


9



5. Different auxiliaries use in gas plants


For open cycle plant

► Gas Turbine

► Compressor

► Combustor

► Intercoolers

► Regenerator



For combine cycle plant

► Gas turbine

► Compressor

► Combustor

► Intercooler & Regenerator

► Heat exchanger

► Steam turbine

► Condenser & Cooling tower



10

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