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Four India-designed 700 MW reactors being built at brisk pace

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Chennai: Construction of four India designed 700 MW pressurized heavy water reactors (PHWR) are progressing at a quick pace and the first one is expected to go on stream end 2016 or early 2017, said senior officials of Nuclear Power Corporation of India Ltd (NPCIL).

The NPCIL is building two 700 MW atomic power plants each at Kakrapar Atomic Power Station (KAPS) in Gujarat and Rajasthan Atomic Power Station (RAPS).

For NPCIL that has been building 220 MW and 540 MW pressurised heavy water reactors (PHWRs), it is a major jump to go in for 700 MW PHWRs.

“It is the first of its kind reactor in the country,” Lokesh Kumar, project director for the third and fourth units at KAPS told IANS over phone from Kakrapar in Gujarat on Monday.

The Atomic Energy Regulatory Board (AERB), the sectoral regulator, is carefully poring over the reports submitted by the units before according its sanction.

NPCIL has two units of 220 MW each at KAPS which are operating successfully.

It is the third unit at KAPS with a capacity of 700 MW that is expected to go operational first out of the four under construction.

“We are the torch bearers for this kind of reactor in the country now. Once the first unit goes on stream, it will be easy for other three,” Kumar said.

Queried about the project status, he said: “We are in a crucial stage. The construction work is at its peak. We have energised the start-up transformer. The power system is ready for the unit that would go on stream.”

According to him, work on commissioning of the other systems have begun while the civil construction work is nearing completion.

“This week we will start the installation of the reactor coolant channel. The coolant channel installation work will be over in two months time. Nuclear piping work has begun in the two units,” Kumar said.

He said stator installation work on the turbine will begin this week.

“We plan to start unit 3 by the end of 2016 or early 2017. Then commissioning of unit 4 would happen,” Kumar said.

Concrete was first poured in November 2010 for the 3rd unit at KAPS and in March 2011 for the fourth unit.

Though the first unit was expected to go on stream in 2015, owing to erratic supply of components the progress of work got delayed, Kumar said.

As to the percentage of physical progress, Kumar said the third unit is 75 percent complete and the fourth unit is 65 percent.

“The overall project cost for the two units is around Rs.11,459 crore. The project would be completed within the budget. There will be no cost escalation,” he added.

At RAPS where the other two 700 MW reactors are built at an outlay of Rs.12,300 crore, the preparatory work to install the coolant channels are on for the seventh unit under construction.

“Welding of end shield and calandria is over. Preparation work for core components – coolant channels – has started. It will take six months to complete,” B.C. Pathak, project director for 7th and 8th units at RAPS, told IANS.

He said the seventh unit was expected to go on stream sometime in 2017-18 and almost 57 percent of the physical work had been completed.

The NPCIL already has six units at RAPS, with a total capacity of 1,180 MW (4×220 MW and one each of 100 MW and 200 MW).

Ruling out any cost escalation, Pathak added: “We expect to complete the project within the budget. The softening of steel prices has resulted in lower escalation in costs.”

As for the eighth unit, the overall physical progress was around 40 percent.

“All the tenders have been finalised and contracts issued. There is no major tender that needs to be processed,” he added.

The senior NPCIL official said both the upcoming units will share many common facilities like the switchyard, control building and others.

The other first of its kind reactor in India located at Kudankulam in Tamil Nadu is expected to restart power generation on October 30.

The unit has been jumping restart deadlines.

The first 1,000 MW unit at Kudankulam Nuclear Power Project (KNPP) was shut down this June for annual maintenance.

The unit was connected to the southern grid in December 2014. The unit was operating at 60 percent capacity for some time before it was shut down for annual maintenance.

At the time of its shut down in June, NPCIL said the unit will restart after 60 days post annual maintenance and refuelling.

The NPCIL is setting up two units at KNPP with Russian equipment. The second unit on which work has been completed to the extent of 98.50 percent is expected to start the fission process in December 2015.

(Venkatachari Jagannathan, IANS)

 

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Rani Ki Vav: A Mesmerising Stepwell Built In The Memory Of A King By His Queen

Rani Ki Vav is also considered the queen of stepwells in India

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Rani Ki Vav is one of the greatest stepwells ever made in India. Wikimedia Commons

By Ruchika Verma 

  • Rav Ki Rani in Gujarat is one of the biggest stepwells in India
  • It is famous for its size and beautiful architecture
  • The stepwell is one of the World Heritage Sites by UNESCO

Stepwells are an important part of India’s architecture and its

Rani Ki Vav in Gujarat is one of the biggest stepwells in India. Wikimedia Commons
Rani Ki Vav in Gujarat is one of the biggest stepwells in India. Wikimedia Commons

history. Throughout India, there are many stepwells present which may though look similar, but differ in their architectural and historical significance. One such stepwell is Rani Ki Vav in Gujarat.

Rani Ki Vav – A monument breaking the norms 

India has many monuments which have been built by the kings in the memory of their queens, Taj Mahal is one of the greatest examples of that. However, Rani Ki Vav is different. Breaking through the norms, this monument was built by a queen in the memory of her king.

Rani ki Vav, which means, Queen’s stepwell is near Patan in Gujarat. It was constructed sometime during the 11th century in the memory of Bhimdev, the son of Mularaja who was the founder of the Solanki dynasty. The richly sculpted stepwell which is considered a masterpiece was dedicated to the king by his widowed wife, Udayamati. It was flooded by the river Saraswati in the 1980s.

Also Read: Nalanda Mahavira makes it to UNESCO’s list of World Heritage Sites

Rani Ki Vav – Architecture 

Rani Ki Vav stepwell was recognised as World Heritage site by UNESCO in 2014.

This stepwell was built by a queen in the memory of her king. Wikimedia Commons
This stepwell was built by a queen in the memory of her king. Wikimedia Commons

Rani Ki Vav is built inside an opening in the ground, which makes it special. The east facing stepwell is constructed in seven storeys and is approximately 64m long, 20m wide & 27m deep.

The central architectural theme of the stepwell is “Dasavatars,” meaning ’10 incarnations’ of Lord Vishnu. There are over 800 sculptures in the seven galleries, out of which, majority are devoted to Lord Vishnu only.There is also a carving of Vishnu reclining on one thousand snakeheads. The lowest level of the well is blocked by stones and silt now, after the flooding by river Saraswati, however earlier it used to be an escape route to the neighbouring villages.

Rani Ki Vav is considered queen of stepwells in India. Wikimedia Commons
Rani Ki Vav is considered queen of stepwells in India. Wikimedia Commons

Rani Ki Vav is one of the finest step wells in India and the most famous in Gujarat. It has many pillars and walls which are sculpted in the beautiful Maru-Gurjara architectural style. It is nothing less than a mesmerizing sight.

Also Read: 5 Traditional Water Conservation Methods In India 

It is one of kind type of mesmerising structure which is definitely worth visiting. Rani Ki Vav is also considered the queen of stepwells in India. Rani ki Vav was also among the five international heritage sites selected by the Scottish Ten team for digital preservation and scanned in 2011. It is one truly remarkable monument.