Presentation Khan Khwar Project Besham by Geologist Abdul Wahab Orakzai

GEOLOGIST

• ABDUL WAHAB ORAKZAI• UNIVERSITY OF AZAD JAMMU AND KASHMIR

MUZAFFARABADSESSION 2008-2012

WELCOMETO

INDUS TRIBUTARIES HIGH-HEAD

COMPLEX PROJECTS

INDUS TRIBUTARIES HIGH HEAD HYDROPOWER COMPLEX

PROJECTS BESHAM

1. KHAN KHWAR HYDROPOWER PROJECT

2. DUBER KHWAR HYDROPOWER PROJECT

3. ALLAI KHWAR HYDROPOWER PROJECT

EMPLOYER

WATER AND POWER DEVELOPMENT AUTHOURITY

(WAPDA)

CONSULTANTS

HIGH-HEAD CONSULTANTS

(HHC)

1. NATIONAL DEVELOPMENT CONSULTANTS.

2. LAHMEYER INTERNATIONAL GmbH, GERMANY.

3. BAK CONSULTING ENGINEERS.

4. PAKISTAN ENGINEERING SERVICES.

5. ENGINEERING GENERAL CONSULTANTS.

6. INFRA-D CONSULTANTS.

7. BARQAAB CONSTLTING SERVICES.

8. DEVELOPMENT MANAGEMENT CONSULTANT.

9. REVIEW CONSULTANTS.

HIGH-HEAD CONSULTANTS (HHC)A JOINT VENTURE OF

KHAN KHWAR

HYDROPOWER PROJECT

KHAN KHWAR HYDROPOWER PROJECT

CONTRACTORS

1. CIVIL CONTRACTOR SINOHYDRO

2. E&M CONTRACTOR DONG FANG

INTRODUCTIONThe Khan Khwar HPP is located on the river Khan Khwar, a right bank tributary of the River Indus in the Shangla District (KPK). The intake structure is located on the right bank of Khan Khwar. The diverted water crosses the ridge between Khan Khwar valley and Indus valley via an underground water way conduit of some 5.14km length. The Powerhouse is located at the right bank of Indus River. The maximum power output of this plant will be 72 MW, corresponding to a turbine design discharge of 35 m3/s at a max. gross-head of 257 m. The Khan Khwar HPP will produce an annual energy of some 306 GWh, out of which approximately 105 GWh/a will be available during a 04 hour/day period of peaking operation.

PROJECT IMPLEMENTATION DATAPC-1 Cost Approved……………………………..……………………….…Rs. 8301.479 Million

1) KC-01 (LOT C&HS) i. Contract Price ……………………………………………….……….....Rs.1816.259 mil. (original) Rs. 3542.047 mil. (revised) ii. Date of Issuance of Construction Order (Contract)…….June 16, 2003 iii. Date of Issuance of Construction Order (Actual)………..Jan 12, 2005 iv. Schedule Date of Completion/Period …………………........Oct 11, 2008 (46 months) after Approval of EOT of 362 days. v. Date of Completion as per MOU # 2……..…………………….Feb 15, 2011 vi. As Per Contractor’s Revised Work Schedule……………… .Mid February, 2012

2) KE-04 (E&M) i. Contract price …………………………………………………………..Rs 732.445 mil. (original)

Rs. 848.880 mil. (revised) ii. Schedule Completion Date/Period ………………………….Oct 11, 2008 (46 Months) after Approval of EOT of 362 days

1. ReservoirTotal Storage Capacity

Live Storage Capacity

Length

1.05 Million m30.40 Million m3

1.60 km

2. Weir Structure Type

Height Above River Bed

Crest Length

Crest Elevation

Concrete Gravity

29 m

116 m829 masl

3. Stilling Basin Length

Width

60 m

54 m

MAIN FEATURESWeir Site

4. Headrace TunnelType

Length

Size

Discharge Capacity

Circular

4535 m

3.85 m (int. dia)

35 m3/sec.

5. PowerhouseType

Size

Machine Hall

Machine Hall Floor Ele.

External

50.7 x 33.6 x 39.0m

50.7 x 19.6 x 16m

586.00 masl

6. Pressure Shaft Length of Shaft

Shaft Size (dia)

183m

3.25 m

7.

a.

b.

Pressure Tunnel

Concrete Lined Section

Length

Size (Int. dia.)

Steel Line Section

Length

Size (Int. dia)

125 m

3.25 m

290m

3.00 m

8. Tailrace TunnelCovered Tunnel Length

Open Channel Length

41 m

17 m

9. HeadMax. Operation Level

Min. Operation Level

Max. Gross Head

Min. Gross Head

825 masl

818 masl

257 m

247 m

1.

a

Hydro Mechanical Equipment

Francis Turbines

Speed

Discharge

2 No

500 rpm

16.5 m3 / s (each)

b Vertical Pelton Turbine

Speed

Discharge

01 No

428 rpm

02 m3/s

2.

a

Electrical Equipment

Main Units

Speed

Output

2 No. Generators

500 rpm

34 MW (each)

MAIN FEATURESElectro Mechanical

b Auxiliary Unit

Speed

Output

428 rpm

04 MW

3. Energy Output 72 MW

4. Mean Annual Energy 306 GWH

CONSTRUCTION ACTIVITIES AT Weir Site

Weir Structure , Power Intake, Headrace Tunnel, Powerhouse, Switchyard, Pressure System and Surge System are 100 % completed.

Remaining Work:Under MOU # 2 approved by the authority Pak Rs. 1,100.0 Million (i.e. including payment against Contractor’s claim for construction Power Supply, as already determined by the Engineer’s) shall become payable to the Contractor as final claim / dispute settlement.The Contractor was to be ensure completion of following mile stone:1.Mile-Stone No. 25 (water re-system ready for commissioning by September 30, 2010).2.Mile-Stone No. 24 (filling of reservoir by October 01, 2010 ).

The Contractor could not achieve the desired targets. Remaining works are now scheduled to be completed by end March 2012.

OVERALL FINANCIAL AND PHYSICAL PROGRESSContract no. Planned Progress

(%age)Actual Progress

(%age)

Physical Progress

KC-01 100 99.75KE-04 (E&M) 100 99.7 Cost Per Unit = 2.28 US Cents.Total Generation Since November, 2010Unit # 1 = 92.711 GW-HrsUnit # 2 = 108.464 GW-HrsAuxiliary = 0.045 GW-HrsTotal Generation upto December 25, 2011 = 201.220 GW-Hrs

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