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Format for Detailed Feasibility Studies of Prospective Mini-hydro
Projects
This format is intended for use in conducting detailed feasibility studies for proposed mini-hydro plants.
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A. BASIC INFORMATION1. General Name of Scheme: ……………………………………..
Location: VDC: ….………………… Ward No.:….... Village:-……………………….
District: ………………………………….
Comments: ……………………………………………………………………………….
……………………………………………………………………….……………………..
Date of site visit: ……………………………………
UC Chairman / Developer: …………………………………
Address: ……………………………………..
Comments: ……………………………………………………………………………..
……………………………………………………………………………………………
Study team leader …………………………………. Signature: ………………….…
Team members:
S.N. Name Profession
Persons Interviewed, address Address
2. Site Information How was the site reached?…………. hours/days walk from roadhead. Name of roadhead ……………………..hours/days walk from airfield. Name of airfield: ………………..
Time for loaded porter to reach the site form roadhead/airfield……………………..
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Instructions
Provide sufficient details of the persons interviewed so that they can be contacted later if necessary.
C. TECHNICAL INFORMATION
Source River/ Stream: ……………….
INTAKE SITELocation:…………………………………………………………..
River Width at Intake site (Approx.): …………………
River Gradient at Intake site (Approx.):-…………….Elevation: …….. masl
GPS Cordinates of intake (x,y, z): ………… ……………. ……………
GRAVEL TRAPGravel trap Location: …………. m, the from intake
Flushing location & description: …………………………………………………………………………………………………………….
Are ground protection measures required? Yes No
SETTLING BASINSettling basin: ………….. m, from the intake
Flushing location & description: ………………………………………………………………………………………………………………
Are ground protection measures required? Yes No
HEADRACEOpen canal lengths & corresponding chainages:………… …………………………………………………………………………….
Headrace pipe lengths & corresponding chainages: ……………………………………………………………………………
Unstable lengths requiring stabilisation:……………. m
FOREBAYForebay: ……………………………………
Flushing location & description: ………………………………..………………………………………………
Are ground protection measures required? Yes No
PENSTOCKTotal length: …….. m, No of Vertical bends: ……. nos.
No of Horizontal bends: ………. , Gross head, Hgross: ………. m.
POWERHOUSE SITEDescription of location: ……………………………………………….……………………………………………………………………………
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Fill in all of the technical information and provide appropriate comments as necessary, especially in the slope stability issues.
Based on the survey measurements and data, state the number of individual bends required along the penstock alignment in the space provided.
……………………………………………….… Elevation: …….masl
………… m above annual flood level of the river
GPS Cordinates of intake (x,y, z):
………… ……………. ……………
Distance from powerhouse to river bank / tailrace exit point: ……mAre ground protection measures required at powerhouse?Yes No
OTHER STRUCTURES
Comment and describe if any other hydraulic structures required for the project:…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
TRANSMISSION LINE
Transmission line length:…………… m
Distribution line length: ……………m
Will part of the scheme alignment or some structures have to be located on private land? Yes No
If yes, specify alignment/structures that will have to be located on private land: ……………………………………………………………………………………………………………………………………….
Is (are) the land owner(s) willing to have the alignment/structures on their land? Yes No Comments: ………………………………………………………………………….………………………………………………………………………….
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D. HYDROLOGICAL STUDYName of the River /Stream : ……………………….
Catchment Area at Intake : ……………. km2
Measured flow at intake, Qi = ……………. l/s
Corresponding Gauge Height : ……. m at……….. (Time)
Date of flow measurement: ……………………..
Method used to measure the flow : Select below
Conductivity Method (Salt Dilution Method)
Velocity Area Method (Current Meter)
Hydraulic Method
(Attach separarte sheet for data & Calculation)
Flow Measured by: ……………………..
Name & Address of the Gauge Reader:
Name:-
Address:-
If there are water diversions (e.g., irrigation) close to the intake, i.e., within 2 hours walking distance, the flow diverted at these locations should also be measured and used to determine the 11-month exceedance flow based on MIP.
Upstream flows abstraction (if any), Qup: …………. l/s
Specify water use (drinking water, irrigation etc): …………..
Downstream water use: Qd: …………………..(l/s),
Specify water use (drinking water, irrigation etc): …………………
Irrigation practices in the area (seasonal, year round, rotational etc.):
……………………………………………………………………………
Will there be any water right conflict due to the implementation of the
scheme? Yes No
Comments on water right issues: ……………………………………………. …………………………….
……………………………………………………………………………
Other possible conflicts due to the implementation of the scheme:
…………………………………………………………………………………
Multipurpose ProjectsCan multiple uses of water resources be promoted in this project?
Yes No
If yes, besides power generation, other uses are:
Irrigation Drinking water Others (specify): …………………………
Modifications required in the scheme layout or components to incorporate multiple uses of the water esources:
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
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If flows are abstracted upstream of the intake, these should also be measured and included.
Selection of Gauging Site and Establishment of Staff Gauge
The gauging site must be selected with due care to assure that the stage-discharge curve is reasonably constant over a long period of about a few years.
The following are selection criteria for the gauging site:
i) The stream should have a well defined cross-section that does not change in various seasons.
ii) It should be easily accessible all through the year.
iii) The site should be in a straight, stable reach.
iv) The site should be free from back-water effects in the channel.
E. TOPOGRAPHICAL SURVEYTopographical Sheet No. :- …………………….Scale of the Map:-(Topographical Maps prepared by Survey Department, GoN)Draw a general sketch (plan) of the scheme from the intake to the tailrace (i.e., birds eye view) in the box below: (Use separate sheets if needed)
Draw a general layout plan of the transmission/distribution areas from the powerhouse:
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Similarly, a sketch of the transmission / distribution line should be included in the box provided.
A general plan from the intake to the powerhouse and tailrace should be drawn at site for comparison with the survey drawings, which would be prepared later. Although, this drawing need not be in scale, the waterway lengths and locations of the structures should be mentioned.
It is, however, recommended that Topographical map (prepared by Survey Department, GoN) shall be brought during the Field visit and general plan together with locations of structures shall be drawn on the map.
F. GEOLOGICAL SURVEY1. Format for Diversion Weir Axis ( geological x-section along weir
axis):
Left abutment, right abutment, slopes on left/ right abutments, width of river banks, composition on river bed material, composition of abutments etc.). Sample cross section.
2. Format for geological conditions along headrace canal: chainage vs. geological features like common soil, colluvial deposit, rock/cliff, stream crossings, cultivated land, forest, landslide, springs, swamps, foot trail/ road, canal, bridge etc. Special attention should be given on seepage area and their evaluation for construction, slope stability, bearing capacity,
ChainageGeological Features Remarks
From To
3. Format for Forebay & spillway (stability of site, area, water discharge, spillway etc.)
Material at foundation
Bed rock Residual soil/ Colluvial deposit/ Alluvial deposit/ Glacial deposit/ any other type of
Remarks
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deposit
For bedrock foundation
Fracture pattern
Parallel / random
Sets One set/ two sets/ more
Spacing of fracture
… … m to … … m
Opening of fracture
… … mm to … … mm
Dip of fracture planes
Towards hill slope/ cut slope
or against
Chances of Plane / Wedge Failure
Yes/ No
Criticality to structure
Risk/No Risk
For foundation on deposit
Thickness of deposit
… … mEstimate
Composition of deposit
Boulder mix/ gravel mix/
sand mix/ fine material
Degree of Compaction
Well/ moderate/ slightly/ loose
Ground water/ seepage/ or dry
… … … lit/min
Any land slides or mass movement in the structure area
Yes/ No
If yes
Circular failure
Size
Criticality to structure
Risk/ no risk
Planer failure
Size
Criticality to Risk/ no risk
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structure
Wedge failure
Size
Criticality to structure
Risk/ no risk
4. Format for penstock (slope, composition of foundation soil/ rock, bearing capacity, overburden etc.)
ChainageSlope
Geological Features
Soundness for foundationFrom to
5. Format for powerhouse/ tailrace site: topography, composition of foundation materials, type: surface, semi underground, in deep excavation; distance from river bank, HFL,
The excavation line should be modified and brought outside for mini hydro surface penstock and powerhouse
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FORMATS FOR CONSTRUCTION MATERIAL SURVEY
(a) Sand and Aggregates
Borrow Area No. … … … … (prepare separate tables for each borrow area separately)
Location
Length, m
Width, m
Height/ Depth, m Average of all test pits
Volume, m3
Sand, m3 … … …% (Average)
Aggregates (<10 mm), m3
… … …% (Average)
Aggregates (10 – 20 mm), m3
… … …% (Average)
Aggregates (>20 mm), m3
… … …% (Average)
(Prepare separate table for each deposit location/borrow area)
(b) Impervious Materials
Location
Length, m
Width, m
Height/ Depth, m (Average depth)
Volume, m3
(Prepare separate table for each deposit location/borrow area)
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G. SOCIO-ECONOMIC DETAILSEconomic ConditionIncome Level
VDC Villages
No. of Households with
high level Income
No. of Households with
Middle Level Income
No. of Households with Low Level
Income
Economic Activity
Income SourcesNo. of
Persons HouseholdsAgricultureLivestockDaily wage/Porter Business Cottage Industry Livestock Products Fruit and Vegetable Sales Service Pension Remittance
Agricultural ProductionProduct Unit Annual
ProductionPrice per
UnitPaddyMaizeWheatMilletOilseedBuckwheatPotatoes
Industry and Craft
TypeTotal No.
Location
VDC VillageWard No.
Rice/Timber MillMechanical Workshop
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FurnitureBakeryMilk ProductsKamiAlcohol
Business Entities
TypeTotal No.
Location
VDC VillageWard No.
Retail shopsTea ShopsHotel/LodgeBankAg. Tools & Equip. ShopsConstruction Materials ShopsElectrical GoodsPhotocopyDoctor’s ClinicPrinting Press
Public Services
TypeTotal No.
Location
VDC VillageWard No.
TempleSports Ground/ParkVDC BuildingMeeting HallHospital/Health PostVeterinary HospitalIrrigation OfficeForest OfficeAg. Service CenterPolice PostPost OfficeTelephone OfficeElectricity OfficeWater Supply OfficeAirportSchools
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Local Level Capacity
Education Level &
Type of Skills
Total No.
Location
VDC VillageWard No.
CarpenterMasonsElectriciansPlumbersOther Skilled ManpowerUnskilled Manpower
Education
Education Level & Type of Skills
Total No.
Location
VDC VillageWard No.
IlliterateUp to Class 10High School & AboveStudents:
- Girls- Boys
Drop Outs:- Girls- Boys
Consumption of Energy
TypeTotal
Location
VDC VillageWard No.
Kerosene (Ltrs./Month)Firewood (kg./Month)Ag. Residue (kg/Month)Battery (No./Month)Animal Dung (kg./Month)LPG (Cylinder/Month)Others (Specify)
Any development activities planned for the next three years?
Administrative Building …. Factory ….School …. Cottage Industry ….Water Supply …. Handicraft ….Sports Ground/Park …. Cooperative ….
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Health Post …. Irrigation ….Hospital …. Mining ….Telecommunication …. Road ….Bank …. Other (Specify) ….Rest House ….
If your VDC/village is provided with electricity services, how much would the people be willing to pay per month?
Description
% of HHs
Rs. 50 Rs. 100 Rs. 150 Rs. 200Over Rs.
200High Income HHsMiddle Income HHs Low Income HHs
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H. LOCAL RATESLocal Material Rates
Description Unit Rs./unit Comments
Sand
Block stone
Bond stone
Coarse aggregate
Wood
Unskilled labour Md
Mason Md
Carpenter Md
Technician Md
Kerosene litre
Diesel litre
Petrol litr
Pole Nos.
Transportation Rates
Type Unit Rs./unit Comments
Truck/tractor
Mule - easy load - difficult
Porter - easy load - difficult
Nearest major supply market for the project : ………………All weather road-head of the project site : ………………Fair weather road-head of the project site : ………………
Estimated Annual Operation and Maintenance cost
Operating costs Amount/month (RS)
Comments
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List the human resources costs required to run the plant. Note that the manpower of MH plants is also based on the size of the plant and the distribution area covered.
All salaries of people employed by the MHP - manager, operators, accountant should be estimated based on nearby MHP plants or the prevailing rates in the community for similar type of work (e.g., school teacher, government employee etc.)
Salary – manager
Salary – operator 1
Salary – operator 2
Salary – accountant
Salary – others
Salary – others
Office expenses
Miscellaneous
Total monthly operating cost
Annual Operating costs: ………………………..
Estimated annual maintenance cost: …… % of total project cost
Total operation and Maintenance cost: Rs ……………….
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I. MANAGEMENT & IMPLEMENTATION MODEL
ManagementProposed ownership: Company Community …………………..
Proposed Name of Project:…………………………………………….Comment: ………………….………..………………………………………..
Key People in proposed plant
ame Role in the proposed MH Plant Comments
Probable organisational structure
Availability of local people- with managerial / business skills - Good Fair Poor None
Manager already selected? Yes No
If yes, name: ………………………………...…………..……………………..
Experience: ………………………………….………………………………..
- with technical/mechanical repair skills - Good Fair Poor None
…………………………………………………………………………………
Type of training required if any:
…………………………………………………………………………………
If No, how will the manager be selected? ………………………………….
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Note the type of ownership proposed for the scheme; Company means a group of private individuals organising together to operate the MHP as a business for profit; Community means a group representative of the community to be served by the MHP collects the equity and organises the financing of the MHP and will operate it on behalf of the community. Also include proposed name of managing organisation if known.List the key people involved in the project and their role (e.g., developer, entrepreneur etc.)
Draw a simple sketch of the proposed organisational structure, eg.
Estimate the level of entrepreneurial ability of the management compared with other business people of the area.Assess the anticipated level of community participation in the MHP scheme, i.e. is the community involved in setting the tariff rate, making policy decisions? Such as how to punish payment defaulters etc. Comment as necessary.Note the availability of local people or people who are currently living away from the area but willing to return if a suitable opportunity arises with managerial and/or business operation experience, eg. have successfully operated a small business. Note if a person has already been selected to manage the scheme and the type of experience they have had. If someone has not already been selected comment on how they will be selected. Comment should also be provided if “Poor” or “None” is checked for the availability question. Note also if operators have already been selected, their names and experience, and how they will be selected if they have not already been.
Operators already selected? Yes No If yes, how? ………………….…………. Name: ……….…………………..
Experience: …………………………….………..……………………………..
Type of training required if any: ………………..…………………………….
If no, how will the operator(s) be selected? ……………………………..
IMPLEMENTATION MODEL (EQUITY/DEBT RATIO)
Equity contribution by developer and loan requirements:
Equity amount the developer/community is willing to invest:
Cash contribution: Total Rs. ……………………(or …. …. % of the Total Project Cost)
and Rs. ……………/ household if community owned.
Labour contribution ……………………. Persons/day = Rs. ………………….
In case of insufficient funds, the developer will:
Increase the equity contribution to meet the balance
Withdraw a bank load for the balance
Research Paper helphttps://www.homeworkping.com/
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Also note down whether training requirements are essential for the manager and operators (if already identified) and briefly describe the type of training required.
If this is a community owned scheme based on discussions at site, state also the cash contribution by participating households as well as the labour contribution in terms of person days as well as in rupee amount.
Since the project cost will be determined at a later stage the loan amount cannot be fixed at site. However, the survey team should inform the developer that there may be a need for a bank loan if the subsidy and the equity amount are less than the total project cost.