“A VISIT TO KAKRAPARATOMIC POWER STATION-

NPCIL”

2nd April 2016

Coordinator

J.S.MAKADIYA

Conduct by

Department Of Civil Engineering

H.O.D.

Prof. H.H.GAJERA

Prepared By

J.S.MAKADIYA

CONTENT

(1) Acknowledgement 3

(2) General Information 4

(3) Purpose of Visit 5

(4) What we learn? 6

(5) Conclusion 13

ACKNOWLEDGEMENT

We are gladly thankful to Head of the Department

Prof. H. H. GAJERA(Civil Engineering) for providing such

great opportunities to learn something new and innovative and

our faculties who gave us a great guidance regarding training

and instructed us the importance of training in civil field. So

we decided to take visit in KAKRAPAR Atomic power

station-NPCIL located in Mandavi Taluka of Surat District for

about 65 students of 6th & 4th semester .

GENERAL INFORMATION

The Kakrapar atomic power station (KAPS-1&2) is

the fifth nuclear power station near Mandvi taluka of surat

district, Gujarat in India. There is the 2 units power plant

producing 220 MW of electricity each, a large atomic energy

producing project involving the construction of a series of

large reactor building, turbine building and other common

facilities. The project took form in 1992-93 as part of a

development scheme to increase usage of non-conventional

energy source and produce hydroelectricity.

The Kakrapar atomic power station advances with

the two more units 700 Mwe which are under construction

and are likely to be under operation at about 2019-20.

PURPOSE OF VISIT

Our main purpose for this visit is to be familiar with

industrial environment and to get practical knowledge of

atomic energy producing plant. With the extinction in the

energy resources it had been a compulsory purpose to figure

out an alternative energy source which should be economical,

Eco-friendly, safe and efficient.

The other reason was to figure out the reasons of leakage

and to carry out safety measures as a civil engineers.

Some other purpose was to know about the solutions of

the atomic waste disposal.

WHAT WE LEARN?

On 2nd April 2016 (Saturday), we reached at

KAKRAPAR atomic power station (KAPS). We reached

inside power plant at 10:30 am.

We firstly got the overall technical information at

Training center by the expert technician Mr. Shailesh Kumar,

who have experience of 15 years at Kakrapar atomic power

station-NPCIL & Mr. Paurush Kumar .

The plant consists of following components

1. Reactor Building (RB) – 1 & 2

2. Turbine Building (TB) – 1 & 2

3. Service Building

4. CW Pump House

5. Natural Draft Cooling Tower (NDCT) – 1 & 2

6. Induced Draft Cooling Tower (IDCT) – 1 & 2

7. Demineraliser Plant (DM Plant)

8. 220 KV Switch yard

9. Stack

10. Canteen Building

11. Administrative Building

12. Ware House

1. Reactor building (RB) – 1 & 2 :-

It consists of

a. Calandria

b. Primary Heat Transport Pump and Moderator System

c. Control and Shutdown

a. Calandria :-

This contains Uranium-236 R as a fuel integral with end shields.

b. Primary Heat Transport Pump and Moderator System:-

Primary heat transport system circulates heavy

water through the fuel in the coolant channels to extract the

heat generated in the fuel by fission.

c. Control and Shutdown :-

Power generation is controlled and adjusted

through reactivity regulating system. It consists two shutdown

systems, primary shutdown system consists 14 nos. of

mechanical rods & secondary comprises of 12 nos. of liquid

poison tubes.

“Reactor building consists of two walls at 2.0 m distance

apart, primary containment made up of pre-stressed concrete

as a cylindrical shell and secondary made up of reinforced

concrete. Primary Containment has 40m outer diameter while

Secondary has 46m outer diameter.”

2. Turbine Building (TB) – 1 & 2:-

The heat energy from reactor is transferred by PHT

systems to light water in steam generators. Steam with 40

kg/sq.cm and temperature of 250 Celsius is supplied to the

turbo generator through main steam headers.

There are two types of turbines are used in plant:

a. impulse turbines

b. reaction turbines

3. Service Building:-

It includes new fuel room, spent fuel storage bay,

light water auxiliary cooling equipment, chemical laboratory,

ventilation system and access to the reactor building.

4. Natural Draft Cooling Tower (NDCT) – 1 & 2:-

“It is naturally drawn cooling tower. It possess a

typical structure with large base for strength & roof

comparatively smaller for venturrie effect”.

5. Induced Draft Cooling Tower (IDCT) – 1 & 2:-

It is mechanically drawn cooling tower with smaller

height as compare to NDCT. In this cooling tower water is

splited into droplets for decreasing it's temperature.

6. Demineraliser Plant (DM Plant):-

This plant demineralises water for controlling its

conductivity and protecting the pipe from cavitation.

Pipes are made from NIOBIUM for controlling ductile

to brittle transition.

7. 220 KV Switchyard:-

The switchyard has 13 bays. Each bay contains isolators ,

current transformers, lighting arrestors, wave traps and

capacitor voltage transformer.

Station electric power is evacuated through seven

number of 220KV lines connecting to the Gujarat electricity

board grid network, two lines to Haldarva (near Bharuch), two

to Vapi, two to Vav (near Surat) and one to Ukai Thermal

power station (interconnection).

8.STACK:-

Stack provide for the controlled release of gaseous

effluents after filtration and dilution which is made of

prestressed concrete of 100 m height.

KAKRAPAR Plant :

> Type of reactor: Pressurized Heavy Water Reactor

> Output : 220 Mwe (Gross)/ Unit

> Capital Cost: 1576.67 Cr.

> Total Area: 959.51 Hecters

> Moderator: Heavy water

At the end of visit we take a group photograph with expert

Mr. Paurush Kumar, all the students & faculty members.

CONCLUSION

From this visit, we get the information and knowledge

about the components of atomic power plant and its

construction. We got very clear idea about the importance of

different components of Atomic power plant.

Thank You

Department of Civil Engineering