RECENT ACHIEVEMENTS | KARBI LANGPI | GAS CRACKER  | 33RD NATIONAL GAMES
»
 Karbi Langpi H.E. Project
 
The river Borpani originates from Meghalaya in the name of Umkhen & flows into the Assam hill region in the name of Borpani (Langpi). The river has tremendous potential for Hydro Electricity generation.
Assam State Electricity Board was entrusted the job of carrying out a detailed survey for harnessing power potentialities of Borpani basin during 1976-77.
The 2x50 MW Karbi Langpi Hydro Electric Project (KLHEP) is a run off the river project located in Karbi Anglong District of Assam .This is the last stage development of the Borpani River basin utilizing an average head of 235m. The Karbi Langpi Hydro Electric project was sanctioned by the Planning Commission during 1979. The construction of the project was started during 1979-80 with infrastructure development activities.

The contracts for the major works like Dam, Tunnel, Power house, Penstock etc were awarded in the year 1981-82. As per the original programme, the project was to be commissioned by 1986, but unfortunately the progress of construction work suffered for various reasons.
The concrete gravity dam which posed a serious setback in timely completion of the project was originally awarded to M/S Sibson Construction Company, a local firm & the contract was required to be terminated during 1987 due to poor performance of the contractor. The contract was then awarded to M/S National Project Construction Corporation, a Govt of India Enterprise. The said firm also failed to achieve the desired progress and the contract was terminated during 1992.
Subsequently, Govt of Assam decided that the project should be implemented through joint venture. Accordingly, an MOU was signed on 25.3.93 for formation of a Joint venture company in the name and style of M/s Bharat Hydro Power Corporation Limited with equity participation of ASEB, M/s Subash Project and Marketing Limited (M/s SPML) and Public for completion of the remaining works.
However the work did not progress as desired and the Government of Assam took back the project by promulgation of an ordinance subsequently converted into an Act, and revested the project to ASEB.

The execution of the remaining work of KLHEP resumed from April 2000, with the construction of balance work of concrete gravity dam from the allocation of Rs 7.50 Cr released from Govt of Assam. The work did not progress as expected because the financial tie-ups were not complete. The construction activity went on with very limited resources of ASEB and meagre fund received from Govt of Assam.
Subsequently, on the request of ASEB, the Power Finance Corporation Limited (PFCL) sanctioned a loan amounting to Rs 125.00 Cr for completion of the balance works of the project. The said loan could not be availed at that time for want of counter guarantee from State Govt. of Assam.

During August 2004, the Hon'ble Chief Minister of Assam reviewed the state of affairs concerning the project and decided to complete the unfinished and almost abandoned project. Consequent to this meeting, the Govt of Assam decided to release an amount of Rs 20.00 Cr in two installments and also to provide Counter Guarantee for availing loan of Rs 125.00 crores from Power Finance Corporation.
The first installment of the PFC loan was received by ASEB during the month of March 2005. ASEB prepared a conducible action plan, recruited a consultant and prepared a detailed inventory of the Electro & Mechanical equipment, which was supplied by M/S SumiTomo Corporation of Japan & further services in supervision of erection of Turbo Generator. The remaining work in all the fronts started in professional manner and the whole work was finally completed in Jan 2007.
The first unit of 50MW was commissioned on 30.1.2007 and the second unit was commissioned on 20.3. 2007. The project was dedicated to the people of Assam by the Hon'ble Chief Minister of Assam on 6.4.2007.

The power generated from KLHEP is evacuated to Guwahati connected through a 108.13 KM long double-ckt 220 KV Transmission line.

The total project cost (Dec 2004 price level) is worked out as Rs 373.09 Cr, which is exclusive of waiver of IDC on the Govt finance prior to Dec 2004 amounting to Rs 173.69 Cr. The total anticipated annual generation of the project will be 390 MKWH.

The 2x50 MW KLHEP is now under commercial operation serving the people of Assam in its full capacity.

A COMMITMENT TO THE PEOPLE OF ASSAM IS THUS FULFILLED

KARBI LANGPI HYDRO ELECTRIC PROJECT

  1. LOCATION Karbi Anglong district of ASSAM
  2. LATITUDE 25047'12"
    LONGITUDE 92030'08"
  3. ANNUAL ENERGY 390 MKWH
  4. PROJECT COST Rs 373.09 Cr
  5. MAJOR COMPONENTS  

 

COMPONENT SALIENT FEATURES FUNCTION / CONTRACTOR
1 2 3
DAM Type- Concrete gravity
FRL-313.50m
MWL-316.50m
Length-221m
Deepest foundation level-265.00m
Top elevation-319.50m
Crest level-300.00m
Spillway capacity-9950.00 Cumecs
 For diversion of requisite quantity of water to the water conduit system

Contractor: Gammon India Ltd.
Mumbai
RADIAL GATE 7 Nos of Radial Gate of size 12m x 14m Contractor: Om Metal Ltd.
Kota
LOW PRESSURE TUNNEL INTAKE:
Approach Channel: 18.25m
Bed width-10.00m
Intake shaft- Vertical gate provided with trash rack.
Dia-5.70m
Inlet elevation-301.50m
TUNNEL:
Type- Horse shoe shaped
Length-4430m
Dia-4.20m
Capacity-57.00 Cumec
 For conveying water to the Power station.


Contractor: Hydel Construction
Chandigarh
HIGH PRESSURE TUNNEL No- 2 Nos
Type-Circular steel lined.
Diameter- 2.60m
Length
Tunnel No.1- 151.20m
Tunnel No.2- 166.20m
 For conveying water to the Power station.
Contractor: i)Hydel Costruction
Chandigarh
ii) Texmoco Limited
iii) Saraswati Engineering Service, Allahabad
PENSTOCK No.-2 Nos
Diameter-2.60m
Length
Penstock No.1- 526.70m
Penstock No.2- 514.20m
 For conveying water to the Power station.
Contractor: i)Texmoco Limited
ii)Saraswati Engineering Service, Allahabad
PENSTOCK TUNNEL

No- 2 Nos
Diameter-2.60m
Length
Tunnel No.1- 101.20m
Tunnel No.2- 89.50m
 For conveying water to the Power station.
Contractor: i)Hydel Costruction
Chandigarh
ii) Texmoco Limited
iii) Saraswati Engineering Service, Allahabad
POWER HOUSE
 Type- Over ground indoor type.
Maximum Head- 240.00m
Average Head- 235.00m
Maximum Utilizable discharge-57.00 Cumecs
Annual available energy- 390 MKWH
Proposed Installation- 2Units of 50 MW each.
Type of turbine- Francis , vertical Shaft
 For generation of electricity.

Contractor:
i) Frontier Engineering Co, Guwahati
ii)Unision infrastructure,Guwahati
(Civil Work)
iii)Superac India Ltd,Guwahati (E&M Work under supervision of Sumitomo Corporation of Japan)

THE POWER GENERATED FROM KARBILANGPI IS FED TO SARUSAJAI 220 KV SUB-STATION CONNECTED THROUGH A 220 KV LINE OF 108.13 KM LONG HAVING 327 NUMBERS OF TOWERS.

 
 
     
 
 
» District Information
Find government services and resources available in your district
 
» Calendar
 
» Search the site

 
 
   

 
 
Powered by National Informatics Centre, Assam
© 2007 Department of Information Technology, Govt. of Assam
Designed by Web.Com(India) Pvt. Ltd. in association with AMTRON