INVITATION FOR EXPRESSION OF INTEREST Page 1 of 2 Consulting Services for Hydropower Deadline: 15.05.2014 at 12.00 hours (noon) India Time Country: India Ref.-No: KfW Project Number: 31510 Prequalification Ref.: International, open Tender for Consultancy Services for Additional Investigations to complement the Feasibility Study of Thana Plaun Hydropower Project. Contracting Agency: Himachal Pradesh Power Corporation Ltd. (HPPCL), Shimla, India Project Measures: HPPCL with the financial support of KfW Development Bank (KfW) seeks to construct the high-head Thana Plaun Hydropower Project (Thana Plaun HPP) in the State of Himachal Pradesh in the North of India. A feasibility study on Thana Plaun HPP was completed in 2013 which shall be complemented by additional investigations. The installed capacity of Thana Plaun HPP is 191 MW. The project contemplates the construction of a 107 m high RCC dam, intake structure, a power tunnel system, an underground powerhouse and the tunnel tailrace system. The underground power house contains five units of Francis turbines generating 3 x 50.33 MW + 2 x 20 MW each, with a total design discharge of 229.29m³/s and a net head of about 73 m. Requested Services for International Consulting Firm / Joint Venture: The following additional studies are required to be taken up before execution of the project: Geological Exploration by Drilling & Drifting In situ and laboratory rock mechanic tests Seismic Reflections/ Seismic Studies/ Seismic Stability Analysis Installation of Seismic Stations Mathematical Models Studies Numerical Modelling for Dam/Underground Caverns Physical hydraulic model studies for Dam, Power Intake, Energy dissipation system, Reservoir sedimentation system & Reservoir flushing system etc. Investigation on possible risks of reservoir induced landslides, glacier lake outburst floods and conflicts resulting from multi-purpose use of the reservoir. Provide expert assistance to HPPCL for planning and construction methodology. Expression of Interest document consisting of detailed scope of work, instruction to applicants, documents to be submitted and important dates can be seen and downloaded online on HPPCL website http://www.hppcl.gov.in/ . Amendments in documents, if any, shall be uploaded and which shall supersede the previous documents. Invitation for Submission of EoI: The Employer reserves the right to shortlist or not to shortlist any or all of the applicant(s) or to cancel the entire process without assigning any reason. The pre-qualification of experienced Consultants is
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INVITATION FOR EXPRESSION OF INTEREST
Page 1 of 2
Consulting Services for Hydropower Deadline: 15.05.2014 at 12.00 hours (noon) India Time
Country: India
Ref.-No: KfW Project Number: 31510
Prequalification
Ref.: International, open Tender for Consultancy Services for Additional Investigations to complement the Feasibility Study of Thana Plaun Hydropower Project.
Contracting Agency:
Himachal Pradesh Power Corporation Ltd. (HPPCL), Shimla, India
Project Measures:
HPPCL with the financial support of KfW Development Bank (KfW) seeks to construct the high-head Thana
Plaun Hydropower Project (Thana Plaun HPP) in the State of Himachal Pradesh in the North of India. A
feasibility study on Thana Plaun HPP was completed in 2013 which shall be complemented by additional
investigations. The installed capacity of Thana Plaun HPP is 191 MW. The project contemplates the
construction of a 107 m high RCC dam, intake structure, a power tunnel system, an underground
powerhouse and the tunnel tailrace system. The underground power house contains five units of Francis
turbines generating 3 x 50.33 MW + 2 x 20 MW each, with a total design discharge of 229.29m³/s and a
net head of about 73 m.
Requested Services for International Consulting Firm / Joint Venture:
The following additional studies are required to be taken up before execution of the project:
3.6 Numerical Modeling for Dam/Underground Caverns
3.7 Physical hydraulic model studies for Dam, Power Intake, Energy dissipation
system, Reservoir sedimentation system & Reservoir flushing system etc.
3.8 Investigation on possible risks of reservoir induced landslides, glacier lake
outburst floods (GLOF) and conflicts resulting from multi-purpose use of the
reservoir.
3.9 Provide expert assistance to HPPCL for planning and construction
methodology.
The services shall be carried out in close consultation with HPPCL and KfW in
all aspects of the assignment.
3.1 ADDITIONAL GEOLOGICAL EXPLORATION BY DRILLING & DRIFTING
3.1.1 EXPLORATORY DRILLING
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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As the proposed dam is 107m high concrete structure and the forces due to self
weight of the dam and impounded water are to be directly transmitted to be
foundation rock mass therefore the subsurface rock mass conditions are
required to be thoroughly investigated. Drill holes (through core drilling) have
been executed earlier, as discussed above (under paragraph 2.0). As
exploratory drilling provides only limited information about the sub surface
geological conditions, it is therefore to be accompanied with geophysical
survey/studies for unraveling subsurface geological conditions.
In view of above, additional six NX (54.4 mm core size) holes at various
locations as discussed below are to be drilled having average depth of about 40
meters each (minimum 10m boring into the fresh rock) for carrying out cross
borehole tomography:-
Two holes one at either bank along the dam axis.
Two holes at U/s end of dam structure (one on each bank).
Two at D/s end of dam structure (one on each bank).
Two inclined exploratory boreholes at the left bank axis between DH-1
and DH-4:
i) One hole inclined into downstream direction, i.e. about 300 out of the
vertical towards west to investigate the longitudinal joint set.
ii) One hole inclined towards the river, i.e. about 400 out of the vertical
towards north-west to investigate a potential fault in the river bed
(optional).
A vertical exploratory borehole along the right bank axis at el. 740 m asl to
investigate the overburden/bedrock contact.
A vertical borehole at the upstream end of the power intake at el. 682 to
investigate the overburden and rock conditions.
One exploratory borehole on each portal of the proposed new diversion
tunnel at the left bank.
Test pits in RBM at the dams site between upstream and downstream
cofferdams.
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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In addition a 3-D sub-surface geological model of foundation area to be
prepared on the bases of tomography and data extracted from earlier
explorations.
3.1.2 GEOLOGICAL MAPPING.
Detailed Geological mapping of reservoir area on 1:2000 or 1:2500 scale to be
carried out to cover following studies. The reservoir area plan is attached as per
drawing no 1338-GA-05.
Demarcating various litho-units in the area, structural discontinuities and
their characteristics.
To accurately delineate various litho-units through long distance
reflector-less total stations in case area being inaccessible.
All vulnerable slopes under reservoir fluctuation zone to be identified and
studied to establish overall stability of the reservoir rim.
3.1.3 EXPLORATORY DRIFTING
Six drifts two along left bank of river and four along right bank at various
locations have been excavated as discussed above (under paragraph 2.0). In
addition two drifts (1.8mx2.1m) are to be driven as described below to
ascertain, parameters like, rock mass quality-rock material/mass characteristics
and limit of distressing etc.
Dam axis’s left bank ± 50m (EL.+710.00)
Power house cavern ± 100m.
The location of above proposed drifts are shown as per drawing no 1338.GA-06
attached.
Exploratory drift at the left bank axis at the level of the existing trench to
investigate the overburden/bedrock contact.
3.2 In-Situ and laboratory rock mechanic tests
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Following in situ and laboratory tests on rock mass in the proposed and existing
drifts are proposed to be carried out:-
3.2.1 Rock Mechanics In-situ Tests
Rock Mechanics in-situ tests shall be conducted in each of the drifts on the left
and right banks at the location of structures. Tests that need to be carried out
are indicated below:
In-situ modulus of deformation & elastic modulus of rock mass by cyclic
plate load tests as per *IS:7317:1993 (R2005) “Code Of Practice For
Uniaxial Jacking Test For Deformation Modulus Of Rock” using 600mm
dia. Rigid plate.-one test at 3 different locations in each of two drifts. At
least one test on each rock type is suggested.
In-situ Uniaxial jacking Test (With Deformation Measurements in
Boreholes Using Multiple Position Borehole Extensometers) -3 sets of
tests in each drift with each test comprising of test in vertical and
horizontal directions.
The tests shall be carried out as per * IS:7317:1993 (R2005) “Code Of
Practice For Uniaxial Jacking Test For Deformation Modulus Of Rock” &
International Society for Rock Mechanics (ISRM) “Suggested Methods
for Determining Insitu Deformability of Rock”
In-situ direct shear test as per *IS 7746:1991 (R2005) “Code Of Practice
For In-situ Shear Test On Rock” (five blocks of 700 x 700 x 350 mm size
per set) - Rock to rock interface (R/R) & Concrete to rock(C/R) interfaces
Right bank drift at Dam site & Power House: 1 set each for R/R and C/R
2 Nos. Hydraulic Fracturing Tests for determination of in-situ stresses in
(One test comprises of 1vertical hole and 2 horizontal EX size bore holes
mutually perpendicular to each other with each bore hole 30m deep) in a
drift at power house location as per *IS:13946 (Part-I)-1993
“Determination of rock stress- Code of practice, Part 1: Using hydraulic
fracturing technique”. The tests shall be carried out by creating new
fractures at intact rock locations with minimum three tests in each hole.
* Refers to “Bureau of Indian Standards Code” – Latest version
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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3.2.2 Rock Mechanics laboratory tests –The minimum number of samples
for each test and quantity of materials required is indicated in the
following table:
Shear parameters (c & Ø): (*IS: 13047-1991)
“Method for Determination of
Strength of Rock Materials in
Triaxial Compression”
Tensile strength (dry and saturated): (*IS: 10082-1981)
“Method of Test for
Determination of Tensile
Strength by Indirect Tests on
Rock Specimens”
Point load strength index: (*IS: 8764-1998)
“Method for Determination of
Point Load Strength Index of
Rocks”
Table: Minimum number of samples required for Laboratory Tests on Rock Specimens
S.No. Test Minimu
m Diameter
Length/Dia Ratio
Minimum number Of Specimens to be tested
Reference to Bureau of Indian Standards (BIS) Codes
1 Unconfined Compressive Strength Test (UCS)
NX Size 2-3 5 (for each rock type)
*IS: 9143-1979 “Method for the Determination of Unconfined Compressive Strength of Rock Materials”
The no. of specimens to be tested should be determined from practical consideration but at least five are required to obtain a representative value.”
2 Modulus of Elasticity and Poisson’s Ratio
NX Size 2-3 2 (for each rock type)
*IS:9221-1979 “Method for Determination of Modulus of Elasticity and Poisson’s Ratio of Rock Materials
in Uniaxial Compression”
3 Slake Durability Test
Rock lumps 2 (for each rock type)
*IS: 10050-1981 “Method for Determination of Slake
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Durability Index of Rocks”
The tests are done on rock lumps each weighing 40-60 gm to give a total weight of 400-600 gm.
4 Water Content, Specific gravity Porosity, Density and related properties of rock material
Rock lumps 3 (for each rock type)
*IS:13030-1991 “Method of test for Laboratory Determination of Water content, Porosity, Density and Related Properties of rock Material”
Min. Weight of each specimen=50 gm.
5 Triaxial Compression
NX Size 2-3 5 (for each rock type)
*IS:13047-1991 “Method for Determination of Reaffirmed 2010 Strength of Rock Materials in Triaxial Compression”
The number of specimens to be tested, as well as, the number of different confining pressure values should be determined from practical considerations. However, at least five specimens per rock sample are preferred.
6 Tensile Strength by Brazilian method
Dia not less than 45 mm
L/D=0.5
10 (for each rock type)
*IS:10082-1981 “Method of test for Determination of Tensile Strength By Indirect Tests on Rock Specimens”
“The total number of specimens should be such that as least 10 tests of any one of the types under consideration are possible”
7. Ultrasonic Wave Velocities (Compression and shear)
*IS:10782-1983 “Method for the Laboratory Determination of Dynamic Modulus of Rock Core Specimens”
(Physical Model) in India or South East Asia for medium / high head
hydropower projects (≥ 50 m net head) with an installed capacity 100 MW
during the last ten years (this minimum requirement can also be fulfilled by a
consortium member or sub-contractor).
(C-6) At least two (2) Expert assistance for planning & construction methodology for
medium/high head underground hydropower project (≥ 50 m net head) with an
installed capacity 100 MW during the last ten years.
Specific evaluation criteria and their individual weight are presented in the following table:
Criteria Maximum Score
1. Evidence of relevant experience gained by consultants during the past ten years (experience of the firm as required under sub item 4.5 ( C ) )
40
1.1 Overall Experience in handling similar projects 30
1.2 Experience under various working conditions in South-East Asia.
5
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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1.3 Experience with working conditions in India (Lead Consultant). 5
2. Suitability for this specific project (experience of the available experts, list only, no detailed CVs)
60
2.1 Assessment of available technical expertise specific to this project
35
2.2 Assessment of the personnel structure in regard to the tasks expected
10
2.3 Assessment of the key personnel in permanent employment and always available to monitor the team and provide back-up services from the home office.
10
2.4 Form of the application documents: Are they complete, concise and related to the Project?
5
Total 100
After having completed the evaluation of the prequalification documents, a short-list consisting
of the five highest ranked consultants, or less, scoring a minimum of 70 points will be
established. Short-listed firms will be invited to submit a technical and financial proposal. Firms
not prequalified will be informed accordingly.
HPPCL is not bound to select any consultant due to whatever reasons.
The preparation and the submission of the prequalification documents is the responsibility of
the applicant and no relief or consideration can be given for errors and omissions.
After opening the prequalification documents until preparation of the short-list of the qualified
consultants, no communication of any type shall be entertained unless called for by
HPPCL / KfW.
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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Appendix 1: Declaration of Undertaking
[Location, Date]
To:
Dear Sirs:
We underscore the importance of a free, fair and competitive contracting procedure that
precludes abusive practices. In this respect we have neither offered nor granted directly or
indirectly any inadmissible advantages to any public servant or other person nor accepted
such advantages in connection with our bid, nor will we offer or grant or accept any such
incentives or conditions in the present tendering process or, in the event that we are awarded
the contract, in the subsequent execution of the contract. We also declare that no conflict of
interest exists in the meaning of the kind described in the corresponding Guidelines.2
We also underscore the importance of adhering to minimum social standards (core labour
standards) in the implementation of the project. We undertake to comply with the core labour
standards ratified by the country of India.
We will inform our staff of their respective obligations and of their obligation to fulfil this
declaration of undertaking and to obey the laws of the country of India.
We also declare that our company/all members of the consortium has/have not been included
in the list of sanctions of the United Nations, nor of the EU, nor of the German Government,
nor in any other list of sanctions and affirm that our company/all members of the consortium
will immediately inform the Client and KfW if this situation occurs at a later stage.
We acknowledge that, in the event that our company (or a member of the consortium) is
added to a list of sanctions that is legally binding on the Client and/or KfW, the Client shall be
entitled to exclude us/the consortium or, if the contract is awarded to our company/the
consortium, to immediately cancel such contract if the statements made in the Declaration of
Undertaking were objectively false or the reason for exclusion from the tender procedure
occurs after the Declaration of Undertaking has been issued.
Yours sincerely,
Authorized Signature [In full and initials]:
Name and Title of Signatory:
Name of Firm:
Address:
2
See “Guidelines for the Assignment of Consultants in Financial Cooperation with Partner Countries“
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
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Appendix 2: Reference Project Sheet
Please complete a table using the format below to summarize the major relevant projects
related to this project carried out in the course of the past 10 years by the legal entity or
entities making this application. The number of references to be provided must not exceed 20
for the entire application.
Ref No.
(max.
20)
Project Title …
Name of
legal
entity
Country Overall
project
value
[INR/EUR]
Propor
tion
carried
out by
legal
entity
[%]
No of
staff
provided
Name of
client
Origin of
funding
Dates
(start
/ end)
Name of
partners
if any
… … … … … … … … …
Description of project Type of services provided
… …
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Appendix 3 : Personnel Reference Please complete tables (A) to (C) below in the specified formats to summarize the personnel available for services and activities required on a maximum of 3 pages (A4 size) for each table.(NOTE: No Expert names required but the number of Experts available for each field).
(Table: A). Expertise
Available for Required
Services
(List shall cover the in-
house personnel of
Lead Consultant as
well as all associated
partners which shall be
listed separately)
List of
number of
existing
Experts
Available
for this
Project
Education
Qualification
(Mention
number as
Doctorate; Post
Graduate;
Graduate; Under
Graduate;)
Professional
Experience of
all experts in
the given
fields (years)
Geological
Exploration by
Drilling & Drifting
… … …
Seismic Reflection
Studies
… … …
Installation of
Seismographic
Stations
… … …
Mathematical model
studies for Spillway &
Power Intake (3-D
Studies)
… … …
Numerical/Mathematic
al Model Studies such
as Dam/Underground
Power House & Intake
Structure
… … …
Hydraulic model
studies/ Reservoir
Sedimentation
Studies & Reservoir
Flushing Studies
… … …
Investigation on
possible risks of
reservoir induced
landslides, glacier
lake out-burst floods
(GLOF) and conflicts
resulting from multi-
purpose use of the
reservoir
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Expert assistance for
planning and
construction
methodology.
… … …
(Table: B). Staffing Level
(List shall cover the in-house personnel of Lead Consultant as well as all associated partners
which shall be listed separately)
Total Personnel
Number
Skilled Area
Subject Area
Special
Qualifications
(i) Technical Staff
…
…
…
…
(ii) Managerial/
Administrative Staff
…
…
…
…
Thana Plaun Hydropower Project Consultancy Services Invitation for Expression of Interest HPPCL
into 2.65 m and 5.00 m dia. which further bifurcates into two branch penstocks of 4.25 m and 2.65 m Dia. Pressure Shaft-2: 6.0 m dia. bifurcating into two branch penstocks of 4.25 m Dia. each
Diameter Pressure Shaft-1: 5.7m, 4.25m and 5.00m and 2.65m Pressure Shaft-2: 6.0 m and 4.25 m
Length upto Bifurcation of main pressure shafts
Pressure Shaft-1 :92m Pressure Shaft-2: 127 m
Grade of Steel ASTM-537 Class II
Liner Thickness Pressure Shaft-1: Varies from 16mm to 32 mm Pressure Shaft-2: Varies from 26mm to 34 mm
POWER HOUSE: Type Underground
Installed Capacity 191 MW
Units 5 (3 x 50.33+2 x20.00)
Power house cavern size 145.0m (L) x 21.0 m (W) x 41.50 m (H)
Transformer Hall cavern size 127.0m (L) x 19.0 m (W) x 28.0 m (H)
C.L. of turbine 629.50 m
Type of Turbine Vertical Francis
Design Discharge a) Main units b) Environmental Units
229.29 cumecs 60.50 cumecs
Rated Head a) Main units b) Environmental Units
72.97 m 73.17 m
Normal TWL a) Monsoon b) Lean c) Non-Monsoon i. During Peaking hours ii. During Non-Peaking hours
634.00 m 632.70 m 633.30 m 631.70 m
Minimum TWL 631.50 m
Annual Design Energy (50% dependable year) a) Main units b) Environmental Units
547.58 GWh 151.51 GWh
Annual Energy in 50% dependable year on 95% machine availability a) Main units b) Environmental Units
534.53 GWh 146.35 GWh
Annual Design Energy (90% dependable year) a) Main units b) Environmental Units
544.07 GWh 148.54 GWh
Annual energy in 90% dependable year on 95% machine availability
a) Main units b) Environmental Units
524.91 GWh 143.16 GWh
Annual Plant Load Factor in 90% Dependable year a) Main Units b) Environmental Units
41.13% 42.39%
Annual Plant Load Factor in 50% Dependable year a) Main Units b) Environmental Units
41.40% 43.24%
TAIL RACE ARRANGEMENT: Type Pressure Flow Tunnels
Size & Shape TRT-7 - 7.80 m dia. D shape TRT-8 - 8.50 m dia. D shape
Lengths TRT-7 - 37 m TRT-8 - 40 m
Normal TWL at outlet a) Monsoon b) Lean c) Non-Monsoon iii. During Peaking hours iv. During Non-Peaking hours
634.00 m 632.70 m 633.30 m 631.70 m
COST ESTIMATES & FINANCIAL ASPECT (Rs. Crores) Civil Works including Hydro- Mechanical Works
975.45
Electro Mechanical Works 297.40
Total Basic Cost including Direct & Indirect Charges
1272.85
Interest during construction (excluding financing cost)
417.66
Escalation 281.80
Financing Charges 16.06
Total Cost including Escalation and IDC
2007.46
LEVELLISED TARIFF AT 90% DEP. YRS.(IN Rs./KWhr) After considering 12% free power & 1% for local area development (levelised)
6.70
LEVELLISED TARIFF AT 50% DEP. YRS.(IN Rs./KWhr) After considering 12% free power & 1% for local area development (levelised)
6.58
PERIOD OF CONSTRUCTION (EXCLUDING 18 MONTHS PRECONSTRUCTION ACTIVITIES)