Mangdechhu Undertaking To Commission From January 10

while the dialogue for the tariff of the 720megawatt (MW) Mangdechhu Hydro assignment Authority (MHPA) continues to be on-going, the venture is committed to commission its four units on January 10, January 30, February 10 and February 28.

The mission’s managing director, AK Mishra, shared the new dates on December 13 and stated the basic actual progress of the task is 99.3 %.

inside the tunnels, worker’s had been considered cleaning the areas, fixing pipes and cables running during the partitions, scraping off particles and withdrawing the machine.

“We are just doing the completing works,” an engineer, Sonam Tobgyel, stated.

He become inner adit 5 (entrance) of the headrace tunnel (HRT), monitoring the ‘Butterfly Valve Chamber (BVC)’. worker’s have been trying out it. “I spent most of my time right here,” the engineer stated.

The adit 5 is closed and the butterfly valve isolates the tunnel from the pressure shaft. Pneumatic butterfly valve

All actual erections of the hydro-mechanical works, officials say, are complete and they’re checking out the gates. The electro-mechanical machines are additionally being established.

In adit four, a section officer of the undertaking, Sapna Ghalley, explained that they’re in the closing stage of plugging the diversion tunnels.

“we are able to shut this wall after which the work is comprehensive,” she stated.

laborers have been knee-deep in water, cleansing the area. “There changed into some flooding from the seepage water,” an reliable defined. “We have to make certain that it is drained well.”

inner the powerhouse, of the 4 180megawatt (MW) gadgets, unit 1,2 and 3 had been boxed up. Works are ongoing to comprehensive the fourth one. 4 electrical engineers are constructing the manage system for the producing instruments.

government engineer for the controls, Hareesh, explained that the devices are related to the computer systems, which would computer screen the vigor era.

The managing director pointed out the transmission lines are charged from the Mangdechhu pothead yard to Alipur Daur by way of Jigmeling substation a month ago, the use of the Punatsangchhu II and that i strains as of now.

“The Mangdechhu energy line building is struck in Assam as a result of natural world clearance from Assam government, because it falls through the tiger reserve for 47kms and it is expected to be capable through March 2019,” he pointed out.

He noted the officials in Assam government granted the clearance and the primary stage clearance is also accorded with the aid of the India govt’s Ministry of environment and wooded area. “meanwhile, we could be using Punatsangchhu II and I transmission lines for vigour evacuation for now. we can shift to our strains as soon as it is ready.”

The Druk green vigour organisation (DGPC), which is ready to take over the task as soon as entirely commissioned, is interviewing the personnel.

It was learnt that 266 people had been interviewed. DGPC could be deploying about 350 personnel as soon as they take over.

There are despite the fact studies of a rush to complete the venture. A hearsay going round in Trongsa is that water become being saved to just spin the turbine for commissioning and that works would resume after the commissioning. Some even alleged that high-quality turned into compromised to comprehensive the task.

AK Mishra, however, sounded assured.

He mentioned the assignment would do every thing systematically, as they had always executed.

“My duty is to deliver this undertaking to the Royal government of Bhutan on the gold standard cost and time,” he pointed out. “i am certain I may fulfil this accountability.”

He mentioned that individuals could at all times discuss with the undertaking and spot the growth.

He talked about the undertaking is attempting to use the seepage water to fill both-power shafts. “The water conductor gadget that’s HRT and force shafts will devour a while, which may well be partly saved if the power shafts are stuffed as above.”

The lengthen

youngsters not as dangerous as the Punatsangchu I and II, the Mangdechhu assignment additionally had some minor complications.

The undertaking was originally expected to finished by way of mid-2017 and has revised the commissioning date about 4 times.

AK Mishra defined that he joined the undertaking on August 27, 2010, and the distinctive assignment record time is seven years, which capability he should have delivered the challenge in September 2017.

He mentioned the mission lost 15 months and that turned into now not as a result of the failure of the venture management.

On March 9, 2011, the venture signed the design and engineering contract with NHPC, the place it misplaced the preliminary six months in procedural formalities, three months every in 2016 and 2017 due to herbal calamities like flooding in Phuentsholing, where BHEL device had been washed away and Zomkhalum the place the restoration of roads took a while. “The remaining six months become affected by the inability of cement supply.”

AK Mishra noted the can charge is Nu 60M per megawatt, which is the most cost-effective. “as soon as exported, it is going to earn good income and support the executive in enforcing its annual plan.”

cost escalation

The project, which the executive originally signed at Nu 29B on a 70:30 personal loan and supply ratio with India is now completing at about Nu 50B.

The managing director defined the charge escalation passed off because of inflation, deviation and further work.

Plant details

The challenge comprises of 114m excessive concrete gravity dam from the deepest foundation stage of 1,636m with two consumption tunnels of 126m and 175m size, and an HRT able to discharging 118cumec (cubic meters per 2nd).

The 147.2m-excessive surge shaft should be 13.5m in diameter, and water might be fed to the underground powerhouse via two steel-lined power shafts measuring 1,873m long and three.5m in diameter.

The underground powerhouse comprises of four 180MW Pelton turbines. The leading cavern of the underground powerhouse should be 41m high and 155m long.

meanwhile, the mission became done by way of sixty three Bhutanese contractors, amounting to Nu 2.68B and 5 Indian contractors amounting to Nu 220M.

The mission has 454 employees, of which six % are non-Bhutanese. however all laborers are non-Bhutanese interior the tunnels and main work areas.

The project claims to have spent greater than Nu 398M on corporate social responsibility.