Neer Nirmal Pariyojana-NNP RWSSP-LIS Welcome. Component: B Infrastructure Development Piped Water...

Neer Nirmal Pariyojana-NNP RWSSP-LIS

Welcome

Component: B Infrastructure Development

Piped Water Supply

Vijendra VikramadityaA K SrivastavaNainital 18-02-2015

Budget Sharing

State/MoDWSProject Outlay

US$ million (INR)%

Assam 240 (1440 Cr) 24%Bihar 261 (1566 Cr) 26%Jharkhand 146 (876Cr) 15%Uttar Pradesh 331 (1986 Cr) 33%MoDWS 22 (132Cr) 2%TOTAL 1000 (6000 Cr) 100% 3

Batch- IApril-14 to Mar 17

Batch-1Total SVS MVS

Assam 3 0 3Bihar 156 152 4Jharkhand 335 326 8UP 232 219 13Total 726 697 28

Batch- IIFeb-16 to Mar19

Assam 4Bihar 117Jharkhand 294UP 321Total 736

B3Assam 0Bihar 57Jharkhand 122UP 371Total 550

Batch- IIIFeb-17 to Mar 20

RWSSP-LIS at a Glance Districts No. of GPs No. of Habs No. of Schemes B1 B2 B3 TotalAssam 7 170 5037 003 4 0 7Bihar 10 400 2596 156 117 57 330Jharkhand 6 530 3304 335 294 122 751UP 10 1000 6469 232 321 371 924Total 33 2100 17406 726 736 550 2012

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Category of PWS Schemes

• Single Habitation Schemes (SHS)• Single GP Scheme (SGS)- have more than

one habitations but all within the same GP

• Small MVS-covering a few GPs (typically 2-4)

• Large MVS- covering many GPs (typically more than 5)

Components of W S S• SHS/SGS/ Small MVS

Tube Well : Source (Ground Water), Pumping Plant (Motor and Pump) for Tube Well,

• Submersible Pump, V T Pump, etc. Pump House Reservoir, (storage and service) Over Head Tank Pumping (Rising) Main, Distribution system (pipe network), Disinfection with Chlorinator (addition of

bleaching powder or Sodium hypo chlorite) solution.

Components of W S S contd…SHS/SGS/ Small MVS

House connection with saddle, ferrule and 10 m long pipe Power connectionElectrical Panel, Switch Gear etc. Allied works such as Duty Room, site development works including Boundary Wall/Fencing, Gate etc.Fittings in Distribution System such as Fire Hydrant, Sluice/Air/Scour valves with chambers. Automation [Simple SCADA (optional)-SMVS]Bulk water meter

Components of W S S (contd..)• Large Multi Village Water Supply Schemes

(LMVS): • Source: Surface water (River/Canal/lake),

{some times Ground water}• Intake [Well, Barge (floating)]• Water Treatment Plant, • CWR and Pumping station• Over Head Tanks for each GP • Pumping Main, Feeder Main, Distribution

Mains (Pipe Network),

Bulk flow meters at each the inlets of GP/ village OHT.

Disinfection by chlorination systems. LMVS also, House connection with saddle, ferrule ,

10 m long pipe and domestic water meter. Power connection, Power Sub station with

transformers, Electrical Panel, Switch Gear etc.

Components of W S S (contd..)

Components of W S S (contd..)

Allied works such as Duty Room, site development works including Boundary Wall/Fencing, Gate etc.

Fittings in Distribution System such as Fire Hydrant, Sluice/Air/Scour valves with chambers.

SCADA Laboratory Others

Design Considerations/Criteria

Population Projections:

• 2011 Census population considered for forecasting population.

• Probable year of commissioning of the schemes (Base Year) is 2015,

• Prospective year will be 2030.• Design year will be 2045.

Design Considerations/Criteria(Contd.)

• Ultimate year population will be used for o Design of Intake, o Rising Main, o Distribution system. • Prospective year population will be used for o Design of Water Treatment Plant (WTP), o Storage o Pumping Plants.


• All water supply schemes (SHS/SGS and MVS) will be designed for a service level of 70 lpcd and with 100 % Household connections.

• All SHS/SGS will be only Ground Water based. • Stand-by pumps may be provided • As far as feasible Dedicated Power Supply be

preferred for LMVS.


• Pumping hours for SHS/SGS will be 8-16 hours and 16-20 hours for MVS and WTP.

• Solar power will be provided wherever power is not available or is unreliable.

• Over Head Tank capacity will be provided with minimum of 8 hours and maximum of 12 hours based on the mass curve.


• Pipe Network System shall ensure water supply to all households.

o Pipe network will be designed for supply of 6 hours with peak factor of 4 for SHS/SGS and 8-24 hrs supply with peak factor of 3 for MVS.

o Terminal pressures of 7 meters at Household.

o Minimum size of distribution system of 63 mm


• House connections to all households. • No public taps • SCADA will be provided for LMVS to better

optimum functioning of the system.• Solar power may be provided wherever power

is not available or is unreliable • Rising Mains with DI K-7 or K-9 depending on

head/pressure in pipe line;


• Distribution system with PE 100 (HDPE), PVC pipes class 6 Kg/Cm2 where appropriate. GI pipes can be used in rocky strata. – Type of valves:

(a) Non Return valves (b) BF Valves; (c) Air Valves:

• DI – K 7 for all pipe connections in OHT.


• The following to be considered wherever WTP is required: – Clarifloculators;– Rapid sand filters;– Clear Water Reservoir with Pumping station;– Chemical dosing: – Manometers for loss of head;– Operation of valves – Back wash arrangement;

Components Design Criteria (Contd.)

• Mechanical Turbine flow type bulk water meters may be provided with 5 years guarantee for measurement of flow at entry to each storage/ service Reservoir.

• Environmental/Eco-friendly RO plants for quality problems may be provided except Arsenic and Fluoride removal.

• Gaseous chlorinators may be provided for LMVS ensuring the supply chain.

Detailed Project Report (DPR)

• Compilation of above components size determination and their cost is DPR

Technical Approvals of DPR

• Existing and Proposed Technical Sanctions

Existing ProposedRs. 40 Lakh by EE Rs. 40 Lakh by EE

Rs. 1 Crore by SE Rs. 1 Crore by SE

> Rs. 1 Crore by CE > Rs. 1 Crore by CE

Administrative Approvals of DPR

Empowered Committee (SLSSC) chaired by Principal Secretary, Rural Development, Govt, of U.P. and representative of GoI, MoDWS, is empowered to provide administrative approval of DPRs.

Key Technical Activities and Aspects Pre-planning phase

Verification/ Confirmation of data regarding selection of GP (Water Quantity, Water Quality, Land availability etc.)

Assessment of Source Availability in terms of Quantity/Yield (Secondary data) Hydro-Geology (Decide the Source), Water demand/usage pattern, habits/ practices, assessment of techno-physical features (including existing impediments etc.)

Assessment of Affordability (capacity) and Willingness to Pay

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Key Technical Activities and AspectsPre-planning phase

Disclosure of Design principles (Technical) in the

Villages/ GP likely to be benefitted

Assessment of requirements, Identification of technology options, preparation of feasibility report [assessment of rough costs (capital and O & M cost as well)] on the basis of thumb rules.

Possible components of the schemes on the basis of above

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Key Activities and Technical Aspects Planning Phase

Preparation of Water Security and Safety Plan for the GP (with inputs from overall Water Security Plans for the Block/ District (Guidelines of MoDWS)

Collection of Primary data and Detailed Survey (TSS, correlation to GPS data) etc.In case of small Schemes (less than Rs.62 lacs) consideration of relaxation in Total Station Survey

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Mobilization of communities, and Trainings on community development for GP/GPWSC members.

Key Technical Activities and Aspects Planning Phase

Preparation of SHS/SGS plans by GPWSC (with support from SO/Engineers)- preliminary designs and estimates (and specifically including coverage for all section of population including the SC/ ST/ vulnerable/ marginalised )

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Gram Sabha Resolution approving the scheme technology and estimates (for SHS/ SGS) and give go ahead for Water Schemes

Disclosure of water security plan details within the GP

Preparation of detailed technical designs of all components and detailed cost estimates with technical specifications (lump sum provisions be avoided) for Detailed Project Report. Realistic assessment of O & M costs be done

Submission of brief proposals by GP to DWSC/SPMU for technical and administrative approval as per delegation of powers

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KEY TECHNICAL ACTIVITIES AND ASPECTS

PLANNING PHASE

Submission for Technical Sanction

Receipt of Technical Sanction of SHS/SGS

Bid document: Scope of work with technical specifications and detailed BoQ with complete technical specification and reference relevant BIS /NBC - Defect Liability Period – preferably 12 months.

- Liquidated damages clause for delay, performance, environmental and social safeguard.

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Reference to HGM maps/ Hydro-geologist report regarding under ground source

Storage capacity should be sum of Maximum deficit and maximum surplus (mass curve), min 8 hours and max 12 hours.

Detailed maps and detailed drawings with Auto CAD be prepared

Technical Specification with reference to relevant B I S e. g. Concrete grade, pumps, fittings, etc.29

Few points to be kept in mind in preparation of DPRs / technical designs


Disclosure of all technical and financial details of selected contractor and contract.

Bid Invitation (Technical and Financial) and selection of construction contractor(s) by GP/GPWSC/Implementing Agency, as per procurement process (with SO and Technical Department assistance).

Quality controls of materials and construction supervision by GPWSC/ SO Engineer (Work Finishing and desired workmanship). Sample testing in test house (Labs.)

Execution of work with environmental and social safeguards.

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Key Technical Activities and Aspects Implementation Phase

Commissioning of scheme and trial runs a) Equitable distribution as per design (Quantity,

Duration & Pressure).b) Ensuring disinfection and measurement of residual

Chlorine (by choloro-scope).

Independent quality check and monitoring by the Third Party (Independent Construction Quality Surveillance Consultant).

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Source Water Quality test, Yield test of source. Recording of measurements, check measurements and payment authorization.


Technical and Social Audit and their disclosures.

After completion of the work, preparation of implementation phase completion report (IPCR) and its disclosures

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As built/completion drawings of all component. Hidden works/under ground works e.g. T W (Strata chart during drilling and pipe assembly drawing during lowering of assembly) ,


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GPWSC take over works from the Contractor.

Compilation & recording of all maps and completion drawings. Due care should be given for completion drawing of Distribution System (pipe line, fittings, valves, depth etc.).


POST IMPLEMENTATION PHASE (O & M)

Preparation of O & M budget, decide on subsidy and tariffs.

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Disclosure of charges fixed, methodology, charges collected; defaults, etc. at Habitation/ GP level.

Collection of charges, as applicable by GPWSC.



Water quality Monitoring and surveillance Carrying out of O&M by GPWSC with assistance from SOs (preferably for 12 months) and on their own later.

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In case O&M is outsourced: Tripartite Service Agreement for O & M of the schemes (GPWSC- DWSC- Operator).

O & M Manual including troubleshooting.

Technical Backstopping by Technical Department.



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Schedule of inspection of Machinery.

Schedule of inspection of water intake; water treatment, disinfection/chlorination, Reservoirs, Mains, Pumping stations, Distribution network, meters, house connections etc.

Schedule of daily operations

KEY TECHNICAL ACTIVITIES AND ASPECTS POST IMPLEMENTATION PHASE (O & M)REQUIREMENTS

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Record of Equipments

Records of key activities of Staff

Staff charts and working schedule

Records of Water quality (raw, Treated and supplied)

KEY TECHNICAL ACTIVITIES AND ASPECTS POST IMPLEMENTATION PHASE (O & M)REQUIREMENTS

Inventory of stores

O&M activities for Tube-well

The O&M activities of the pump operator should include:

Operate pump starter Open isolation valve ·Check reading on ammeter is normal – stop pump

if electric motor is drawing too much current and report problems

Confirm water is being delivered Check for leaks in the rising main Continue to check voltmeter and ammeter

readings during the day

Weekly activities at the w/w should include:Clean the pump houseTesting water quality using a Field Test KitMonthly activities should include:Billing and collection, and deposit with the GPWSC

Annual activities should include:Remove the pump from the well disconnect the fittings and inspectCheck pipe threads and re-cut corroded or damaged threadsReplace badly corroded pipes, if piping is of MS/GIInspect electric cables and check insulation between cablesRecord servicing and maintenance in log bookDe-silt borehole, if requiredCheck screen and clear as needed

Water Conservation Water Conservation

Methods Structural

Flow Control Devices Metering Recycling

Operational (Leak Detection) Unaccounted-for Water (UFW) [ net water production

less Legitimate consumption, metered or notBulk Water metering- Metered consumptionUnmetered consumptions, unmetered public consumptionsE.g. fire fighting, public toilets, street / markets cleaning, etc.

Contd….. Financial Method for water conservation and

leak detection Tariff setting

Based on affordability and willingness Telescopic Flat rate per tap Based on different usage

Social-legal Public education and awareness Water use restriction

Horticulture

Cont…..

• Kitchen Gardening, Irrigation (Agricultural Use)

• Washing of vehicles• Bathing of Buffaloes, Cows, etc.• Very high rate or penalties for

excessive use/consumption– Building Codes

• Plumbing• Materials to be used• Flow control devices (ferrules)

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Neer Nirmal Pariyojana-NNP RWSSP-LIS Welcome. Component: B Infrastructure Development Piped Water...

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