middle tamor hydropower project (73 mw) progress report ......project key dates 4 s.n. activities...

SEPTEMBER, 2020

SANIMA MIDDLE TAMOR HYDROPOWER LIMITED

Shankha park, Dhumbarahi, Kathmandu, Nepal

GENERAL PROJECT OVERVIEW

3

GENERAL INFORMATION:COMPANY :

Name : Sanima Middle Tamor Hydropower Limited (SMTHL)

Registration date : Registration No. 148796 (Baisakh 23 2073)

PROJECT :

Name : Middle Tamor Hydropower Project

River :Tamor River

Location : Phaktanglung Rural Municipality, Phungling Municipality,

Mikwa khola Rural Municipality, Taplejung, Province 1

Installed capacity : 73 MW

Gross head : 132 m

Design Discharge : 73.71 m3/sec

Annual Energy : 429.41 GWh

(Dry Energy 64.48 GWh & Wet Energy 364.93 GWh)

GENERATION LICENSE :

License Number : Bi. Bi. Bi. /073/74 Bi. U. 198

Issue Date : 25 Mangsir 2075 B.S.

PROJECT KEY DATES

4

S.N. Activities Dates

1 Survey license to SHEPL 14 Feb 2008

2 Transfer of survey license from SHEPL to TSE 07 Jul 2011

3 Feasibility Study (75 MW cascade option) Sept 2013

4 Supplementary Feasibility Study (54 MW independent option) July 2016

5 EIA approval (75 MW cascade option) June 2013

6 Grid Connection Agreement 9 Mar 2015

7 Supplementary EIA approval (54 MW independent option) Nov 2016

8 Power Purchase Agreement (52.1 MW independent option) 10 Jan 2017

9 Generation License (54 MW independent option) 5 June 2017

10 Transfer of Generation License (From TSE to SMTHL) 06 Nov 2017

11 Consent Letter for expansion of Capacity from 54 to 73 MW from DoED 09 Oct 2017

12 Consent Letter for Supplementary EIA of the capacity-upgraded (73 MW) Project from Ministry of Environment 22 Dec 2017

13 Financial Closure with a Consortium of 8 Banks Feb 10, 2019

14 Main Civil Contract awarded to Zhejiang First Hydro & Power Construction Group Co. Ltd. 12 Apr 2018

15 SEIA approval for 73MW 23 Oct 2018

16 Power Purchase Agreement (PPA) for additional 20.9 MW 30 Nov 2018

17 Generation License received for 73 MW 10 Dec 2018

18 Land Ceiling Approval 4 July 2019

19 Award of Hydromechanical Contract to Machhapuchhre Metal and Machinery Works Pvt. Ltd 11 July 2019

20 Award of Electro-mechanical Works Contract to Chongqing Water Turbine Works Co. (CWTW), Ltd. 23 Dec 2019

21 Award of Transmission Line Works Contract to Cosmic Electrical Engineering Associates Pvt. Ltd. 07 June 2020

PROJECT KEY DATES

5

Power

Purchase

Agreement for

73 MW signed

with Nepal

Electricity

Authority

2075/08/14

(Nov 30, 2018)

PPA Generation

License

Financial

Closure

Proposed

RCOD

Generation

License for 73

MW received

from

Department of

Electricity

Authority

(DoED)

2075/08/25

(Dec 11, 2018)

Agreement for

the Loan

Facility with

consortium of 8

Banks

Lead Bank:

NIBL

Co Lead: Nabil,

Global IME

Commercial

Operation of

the Plant

2079/04/01

(July 17, 2022)

Supplementary

Environment

Impact

Assessment for

73 MW

approved by

the Ministry of

Forests and

Environment

2075/07/06

(Oct 23, 2018)

SEIA

2075/10/27

(Feb 10, 2019)

CONSTRUCTION MANAGEMENT

6

CONTRACT PACKAGES AND CONSULTANTS/CONTRACTORS:

Contract Package Award Date Contractor/ Supplier

The Engineer/ Consultant September 21, 2017 Sanima Hydro and Engineering (P.) Ltd., Nepal

Main Civil Works Construction April 12, 2018Zhejiang First Hydro & Power Construction Group

Co. Ltd., China

Hydro-mechanical Works July 11, 2019Machhapuchhre Metal and Machinery Works Pvt.

Ltd., Nepal

Electro-mechanical Works December 23, 2019 Chongqing Water Turbine Works Co., Ltd., China

Transmission Line Works June 07, 2020Cosmic Electrical Engineering Associates Pvt. Ltd.,

Nepal

PROGRESS AT MAIN CIVIL WORKS

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Civil Structure at Headworks (Sept. 2020)

• Contractor: Zhejiang First Hydro & Power Construction Group Co. Ltd.

• Contract Award Date: 12 April 2018

CONSTRUCTION PROGRESS

8

PROGRESS AT HEADWORKS TILL DATE:

PROGRESS WORKS AT HEADWORKS

9

• 96.40% of total concrete works at Headworks have been completed as of 13

Sept. 2020 in (INTAKE, UNDERSLUICE, FLOODWALL & CUTOFF SECTION)

Progress Status at Headworks of MTHP

Structures Works CompletedWorks

RemainingRemarks

Undersluice 98.00% 2% Ongoing

Intake 96.50% 3.50% Ongoing

U/s Floodwall 87.50% 12.50% Ongoing

D/s Floodwall 100% 0% Completed

U/s Cutoff Wall 100% 0% Completed

Total Concrete Progress at H/W 96.40% (ExcludingWeir)

PROGRESS AT HEADWORKS

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Intake Structure Front View Intake Structure Back View


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Intake and Undersluice Structure from Front View

Intake

Undersluice

Cutoff Wall

Coffer Dam


12

Intake Structure from Back View

Intake

U/s Floodwall

Undersluice


13

A view of Undersluice from Weir Side Top Slab of Undersluice


14

Intake and Undersluice (A view from Hillside) Undersluice Panel-03


15

Undersluice StructureU/s Floodwall View

PROGRESS AT UNDERGROUND WORKS

16

• 64% by length and 47% by Volume of total tunnel works have

been excavated till date

• Length of tunnel has reached a total of 4241 meters (6634m Total)

Works Completed

• Approach Tunnel from Inlet

• Approach Tunnel-01



• Inspection Tunnel-01

• Inspection Tunnel-02

• Adit-01

• Connecting Tunnel to Surge Shaft

• Ventilation Tunnel

Works Ongoing

• Settling Basin Bay-01



• Connecting Tunnel-01



• Sediment Flushing Tunnel

• Gate Shaft (Inspection Tunnel to SB)

• Surge Shaft

• HRT• From Adit

• From Outlet

TUNNEL EXCAVATION WORKS TILL DATE

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Middle Tamor Hydropower Project (73 MW)Tunnel Excavation

S.N TunnelTotal Length

(m)Completed length (m)

Total Volume (m3)

Excavated Volume (m3)

Status

1 Approach Tunnel from Inlet 247.06 247.06 9292.92 9292.92 Completed2 Approach Tunnel-01 151.34 151.34 3363.12 3363.12 Completed3 Approach Tunnel-02 113.17 113.17 2505.37 2505.37 Completed4 Approach Tunnel-03 131.50 131.50 3025.22 3025.22 Completed5 Settling Basin Bay-01 150.00 59.60 29669.13 3143.70 Pending6 Settling Basin Bay-02 150.00 92.98 29669.13 5396.51 Active7 Settling Basin Bay-03 150.00 72.93 29669.13 4043.34 Active8 Connecting Tunnel-01 138.30 132.35 3002.49 2867.36 Pending9 Connecting Tunnel-02 117.37 112.50 2749.25 2638.66 Pending

10 Connecting Tunnel-03 121.32 104.60 2630.97 2251.25 Pending11 Inspection Tunnel-01 274.67 274.67 6068.56 6068.56 Completed12 Inspection Tunnel-02 289.52 289.52 7420.23 7420.23 Completed13 Adit-01 299.47 299.47 6782.49 6782.49 Completed14 Sediment Flushing Tunnel 506.36 5.00 3600.00 35.40 Pending15 Gate Shaft (Inspection Tunnel to SB) 66.00 SB-gate 4551.86 1106.05 Pending16 Connecting Tunnel to Surge Shaft 70.20 70.20 2765.88 2765.88 Completed17 Surge Shaft 87.73 8.00 16880.38 1312.98 Active18 Ventilation Tunnel 199.75 199.75 2560.64 2560.64 Completed

19.1HRT

From Adit3369.96

683.73133248.58

27411.12 Pending19.2 From Outlet 1192.43 46981.74 Pending

Total 6633.718 4240.80 299455.349 140972.54 47.08%

63.93% 47.08%Completed by length Completed by Volume

TUNNEL EXCAVATION WORKS NEAR H/D TILL DATE

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PROGRESS AT TUNNEL

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A view of Connecting Tunnel Junction

PROGRESS AT TUNNEL

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A view of Surge Shaft CrownA view of HRT from Adit

PROGRESS AT TUNNEL

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A view of SB-03A view of SB-02

PROGRESS AT TUNNEL

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A view of HRT from OutletInstallation of Ribs

CONSTRUCTION PROGRESS

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PROGRESS AT POWERHOUSE:

SUMMARY OF WORK PROGRESS

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PreConstruction

Works

U/SFloodwall

D/SFloodwall

U/S Cutoffwall

Intake UndersluiceSettling Basin

by lengthSettling Basin

by volume

TotalUnderground

works bylength

TotalUnderground

works byvolume

Surge Shaft

% Remaining 0 13 0 0 4 2 50 86 36 53 92

% Completed 100 87.5 100 100 96.50 98 50 14 64 47 8

0

20

40

60

80

100

120

Work Progress Chart at Active Work Fronts

% Completed % Remaining

PROGRESS IN HYDRO-MECHANICAL (HM) WORKS

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• Contractor: Machhapuchhre Metal and Machinery Works Pvt. Ltd.

• Contract Award Date: 11 July 2019

Hydro-Mechanical (HM) Works

• Hydro Mechanical works are on going simultaneously with the Main Civil

Contractor

• Installation of steel lining in Intake/Bed load sluice (Status: Completed)

• Installation of steel lining in Undersluice (Status: Ongoing)

• Radial Gate Frame erection (Status: Completed)

• Erection of Undersluice stoplog frame (Status: Completed)

• Installation of bedload sluice gate/ stoplog frame (Status: Completed)

• Rolling of Approach Pipes and Penstock Pipes (Status: Started from Aug. 09)

26

Pipes for Inlet PortalRolling of Pipes at HM Contractor Workshop



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Erection of Radial Gate FrameFabrication of Approach Pipes at 3MW Workshop


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Steel Lining at UndersluiceTrunnion Box Fixing

PROGRESS IN ELECTRO-MECHANICAL (EM) WORKS

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• Contractor: Chongqing Water Turbine Works Co. (CWTW), Ltd., China

• Contract Award Date: 23 July 2019

Electro-Mechanical (EM) Works

• Electromechanical Contractor will mobilize as soon as the International Flights

are permitted

• Construction design and drawings (Status: 80% Completed)

• Construction of Draft tube elbow is ongoing in China (Status: 90% Completed)

PROGRESS IN ELECTRO-MECHANICAL (EM) WORKS

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Grinding and Painting of Draft Tube Components in ChinaFabrication of Draft Tube Elbow in Contractor’s Workshop in China

PROGRESS IN TRANSMISSION LINE (TL) WORKS

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• Contractor: Cosmic Electrical Engineering Associates Pvt. Ltd.

• Contract Award Date: 07 June 2020

Transmission Line (TL) Works

• Detailed survey of finalized Transmission Line route has been carried out

• IEE study is in progress

• Final alignment for transmission line is finalized

• Feasibility study of Transmission Line have been completed and submitted to DoED

• Engineering Design (Status: Complete)

• Check Survey (Status: Complete)

• Soil Investigation(Status: Complete)


32

TL Contract Award (June 07, 2020) Detail Survey along the TL alignment


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Excavation works at Dhunge-Sanghu substation of NEA (Koshi Corridor)Geotechnical Investigation for Transmission Line

FINANCIAL PROGRESS

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• Till Date Expenditure: 29% Financial Progress has been achieved till date

Major Contract Packages% Financial

Progress

% Remaining

Budget

Main Civil Works 42% 58%

Hydro-

Mechanical

Works

Design and Fabrication

41% 59%

Steel Plates Procurement

100% 0%

Electro-Mechanical Works 7% 93%

Transmission Line Works 7% 93%

Financial Progress of MTHP 29% 71%

29%

Overall Financial Progress of MTHP

% Expense TillDate

OVERALL CONSTRUCTION PROGRESS TILL DATE

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40%

Overall Progress of Project = 40%

OverallProgress ofProject

45%40%

10% 10%

55%60%

90% 90%

0%

20%

40%

60%

80%

100%

120%

Main Civil Works Hydro-Mechanical Works Electromechanical Works Transmission Line Works

Construction Porgress

Works Completed Works Remaining

Particulars Works Completed Works Remaining

Main Civil Works 45% 55%

Hydro-Mechanical Works 40% 60%

Electromechanical Works 10% 90%

Transmission Line Works 10% 90%

Overall Construction Progress

of the Project: 40%

PHOTOGRAPHS OF ONGOING WORKS

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Intake

Undersluice

Coffer Dam

Tamor River

Cutoff Wall

Flood Wall

View of Headworks from Upstream side


37

Temporary diversion wall constructed from panel 08 to DS cutoffUndersluice Panel 04-08


38

Third stage temporary cofferdam preparation for Construction of WeirUndersluice and Weir Construction Area

Weir Axis

Tamor River


39

Undersluice from D/sA view of Undersluice


40

Undersluice Panel 03Intake and Undersluice Construction


41

A view of U/s FloodwallConstruction of Guard House (Near Simle Camp Area)


42

HRT from Adit-01Niche at HRT Outlet

middle tamor hydropower project (73 mw) progress report ......project key dates 4 s.n. activities...

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