myntdu leshka he march2012

7/30/2019 Myntdu Leshka HE March2012

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Save Energy For Benefit of Self and Nation

MYNTDU LESHKA H. E. PROJECT (3X42MW)JAINTIA HILLS DISTRCT, MEGHALAYA

PROGRESS OF WORKS

AS ON MARCH 2012

COMPLETION DATE:

UNIT-I - November, 2011UNIT-II - March, 2012UNIT-III - September, 2012


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CAUSES OF DELAY

1. Target Completion period is 5 years is unrealistic and the delay is apparent.

2. Remoteness of site.

a. Shortage of skilled man power.b. Slow reaction to construction materials.

3. Geological Condition.

a. Delay in foundation excavation of Dam.b. Increase in quantity of concreting.

4. Seismological Condition

a. New Dawki faultb. Delay in design.

5. Water Chemical Condition (Acidity)

a. In view of acidity of river, special concrete, paints etc. had to be provided after some research and designworks.

6. Heavy Rainfall (Cherrapunje Belt)

a. Early rainfall

b.

Heavy rainfall causing flood.c. Less working time.

As a result of Early and Heavy rainfall there has been many floodings in the work site but abnormalflooding had occurred on :-

a. 8th October, 2009b. 20th May, 2011.

7. High head of the Project

a. In view of High head, the machine RPM is fixed at 600.

b. This result in high pressure etc. develop at the Power House which require utmost care and caution.


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PHYSICAL PROGRESS OF WORKS OF THEMYNTDU LESHKA HYDRO ELECTRIC PROJECT (3 X 42 MW)

1. ROADThe constructions of all road works connecting different sites in the Project are completed.

2. BUILDINGThe constructions of all buildings are completed, except for Permanent Building, Type-IV at Power House Colony where

the works are in progress.


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3. DAM-

Sl.No

Particularsof Works

UnitPresentQuantity

CompletedBalanceQuantity

Target date ofcompletion

1 Excavation M3 650000 650000 Completed completed

2 Concreting M3 332311 331439.00Finishing

works-

3ControlRoom

Completed except for finishing works. -


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4. SLUICE RADIAL GATES (DAM): All gates completed, except 1(one).

All hoisting arrangement completed.

5. TUNNEL/SURGESHAFTSl.No.

Particulars of Works Unit Present Quantity Completed

1 HRT M 3313.46 All works completed

HPT M 314.00 All works completed

INTAKE GATE No 1 All works completed

2 SURGE SHAFT M 85 All works completed

Sl.No.

Particulars of Works UnitPresentQuantity

Completed

1 Sluice Radial Gates Nos. 7

All Gates are completed and in operation fromboth individual control and remote control

panel. Gate No.1 is presently used by stop loggate.


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6. VAVLE HOUSE & ERECTION OF BUTTERFLY VALVE

Sl.No




1 Excavation M3 11250.00 11250.00 - Completed

2 Concreting. M3 698.50 698.50 - Completed

3 Erection of Butterfly

ValveNo. Units -I, II, & III are completed.

Completed


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7. ANCHORS & SADDLES (3x42 MW)No. of Anchor Blocks: 10

Sl. No Particulars of Works UnitPresentQuantity



1 Excavation (channel)& (Anchors/Saddles) M3 116660.59 116660.59 - Completed

2 Concreting for Anchors& Saddles.

M3 27384.993 27384.993 - Completed

8. PENSTOCK & PIPE LINERSl.No




1 Supply & Fabricationof Penstock Liner MT 3128.913 3128.913 - Completed

2 Erection of PenstockLiner

MT 3128.913 3128.913 - Completed


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9. POWER HOUSE (CIVIL)Civil works All Completed (For Unit- I & II).

Remaining works (finishing):

a. Railingb. Lightingc. Lifts

Sl.No.




1 A. POWER HOUSE

(i) General Excavation, Pit &

Tail Race M3

All works completed Completed

(ii) Concreting Sub-Structure M3 22000.00 22000.00 0 Completed

(iii) Concreting Super-Structure

M3 4050.00 4050.00 0 Completed

(iv) Concreting of Tail Race M3 20226.739 20226.739 completed Completed

Draft Tube Gate No. 3

The erection work andinstallation of draft tube gate forall units is completed. (Hoisting

arrangement is going on)

-


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10. SWITCHYARDErection of Equipment All completed.Cabling works All completed.Charging All completed.

Sl.No




1 Excavation M3 90997.38 90997.38 Completed

2Erection of structures equipment M3

The erection work completed.

Testing work is in progress

Completed

3Inter connecting Line Nos. 7

Foundation completed,Tower erection completed

Completed

4 Cabling Completed Completed

Testing Completed Completed

Charging Completed Completed


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11. POWER HOUSE (ELECTRICAL)a. M/s. Shyama Power

Erection of all Auxiliaries in Power House is completed.

Testing of all equipments is in progress for Unit III.

b. M/s Andritz Hydro Generation started on December 2011 for 1st Unit

Auxiliaries Cabling & Termination in progress for Unit-III.

c.

M/s. Vijai Electricals Erection of Equipment for Unit-III in progress.

CONCLUSION:

1. The 1st

Unit is in generation and as on date more than 16 mu of energy is generated.

2. Synchronization of Unit II started on 30th

March 2012.

3. Target completion date for Unit III is September 2012.


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myntdu leshka he march2012

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