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Industrial Summer Training at

NTPC Badarpur

AKSHAY ARORA

MECHANICAL ENGINEERING4thyear

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Overview of NTPC

NTPC was set up in the central sector in the 1975.

NTPC has installed capacity of 29,394 MW. It plans to be a

75,000 MW company by 2017.

NTPC Badarpur station has also bagged ISO 9001/ ISO 14001

certification.

Today NTPC contributes more than 3 / 5th of the total power

generation in India

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Overview of NTPC

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NTPC Badarpur

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Overview of BTPS

BTPS MEETS MORE THAN 24% OF DELHIS

ELECTRICITY CONSUMPTION

INSTALLED CAPACITY = 720 MW

DERATED CAPACITY = 705 MW (3x95 + 2x210MW) OWNED BY GOVT. OF INDIA, MINISTRY OF

POWER.

BEING MANAGED BY NTPC FOR THE LAST 26

YEARS SINCE 1st APRIL 1978. NTPC adjudged as the 3rd best employer in India

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NTPC Badarpur

BTPS was conceived in 1965 to meet the growing

electricity demand of Northern Region.

The site construction activities started in 1968.

The plant became operational with the

commissioning of its first unit on 26th July 1973, 2nd

unit in ;74 , 3rd unit in 75 , 4th unit in 78 & 5th unit

in 81.

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Basic Principle

There are basically three main units of a thermal power plant:

1. Steam Generator or Boiler

2. Steam Turbine

3. Electric Generator

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Electricity from Coal

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BOILER MA INTAINENCE DEPARTMENT

Internally Fire Tube Boiler- 52m height, 60mm diameter.

Powder Coal is air blown into furnace forming the fire required

Water changes into steam at 370 Degree Celsius.

The saturated steam introduced into superheat tubes as the exit from

the furnace.

The superheated steam goes to the 210 MW turbine generator to

generate electricity.

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AUXILLARIES OF THE BOILER

Furnace

Boiler Drum

Water Walls

Reheater

Superheater

Economizer

Air pre-heater

Pulvariser

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PLANT AUXILLARY MAINATINENCE

It con sists o f 6 sub - depar tments:

Water circulation system- a) Natural Circulation system

b) Controlled Circulation system

Ash Handling plant- a) Hydraulic ash handling plant

b) Fly ash collection

Water Treatment Plant- a) Pre- treatment section

b) Demineralization section

Draught system

Fans- a) ID Fans

b) FD Fans

Compressor House-a) Air Drying Unit

b) Air Compressor

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TURBINE MA INATA INENCE DEPARTMENT

Two types of turbines are used in BTPS, i.e., 95 MW and 210 MW.

Generally compounding of turbine is done by using an IP turbine.

Specif icat ions o f turbine used:

Tandem compound 3 cylinder reheated type

Power= 210 MW

Number of stages= 12 in HP, 11 in IP and 8 in LP.

Type of governing: Nozzle governing

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Vacuum Systems

Condensers: 2 for 210 MW at exhaust of LP Turbine.

Ejectors: Total 3 ejectors are used connected

to the condenser.

CW Pumps: It is used to pump water to

the boiler. The pump system is equipped with

LP heaters, deaeriators.

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COAL HANDLING DEPARTMENT

Coal handl ing system

Path A: From hooper to boiler

Path B: From hooper to stockyard

Path C: From stockyard to boiler

Main Coal handl ing Equ ipment

Pulley

Conveyor Belt

Vibrating Screen

Crusher

Magnetic Separator

Vibrating Feeder

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Thank You