The state has been able to provide water to 79% of the urban and59% of the rural population and efforts are being made to cover therest of the population.Accordingly a very ambitious project known as Kerala WaterSupply Project (KWSP) was derived with support of InternationalCorporation - Japan International Corporation Agency (JICA). FiveSchemes under KWSP:•Trivandrum•Meenard•Cherthala (Kollam)•Kozhikode (Calicut)•Pattuvam (in Kannur District)KERALA WATER SUPPLY PROJECT(KWSP) & PATTUVAM SCHEME
KERALA WATER SUPPLYPROJECT (KWSP)• The Government of India is the borrower and the Kerala WaterAuthority is the executing Agency. This Project aims at rehabilitatingand augmenting the water supply systems of two urban regionsnamely Kozhikode and Thiruvananthapuram and to construct newwater supply systems for three rural regions namely, Pattuvam ofKannur district, Cherthala of Alappuzha district and Meenad ofKollam district. Pattuvam Scheme is the north most beneficial areafrom this massive project.• The international consultants M/s TEC consortium (with Black &Veatch, GKW, STC, CED) led by M/s Tokyo EngineeringConsultants Company Ltd (TEC). Japan has been selected by theKWA to manage the implementation of the project.
PattuvamSchemeKERALA WATER SUPPLYPROJECT (KWSP) & PATTUVAMSCHEMEKerala is a state located insouthwestern India. Neighboringstates include Karnataka to thenorth and Tamil Nadu to the southand east, and the Arabian Sea is tothe west. Major cities include thestate capital of Trivandrum(Thiruvanaputhram), Kollam,Cochin, Calicut (Kozhikode) andKannur (Cannore).KozhikodeSchemeCherthalaSchemeMeenardSchemeTrivandrumScheme
The Pattuvam Scheme is in Kannur District is the northern mostarea benefits with the KWSP. The objective of the scheme is tosupply safe and potable water to 530,000 consumers in 10 villages,7 semi-urban areas and 1 municipality in the Kannur District byconstructing new facilities. Facilities include technical componentsfor water abstraction, raw water transmission, water treatment,treated water transmission, storage reservoirs and distributionnetworks.The project area covers 350 km2 and the water demand of the areais estimated as 93 MLD. The source is at Pazhassi Barrage atValapattanam River at Kuiloor and the method of extraction is byintake well. The raw water is boosted through steel pipe of 1100mm diameter for a length of 11 km, to the Treatment Plant. Thecapacity of the Treatment Plant located at Peruvalathuparamba is93 millions liters per day.PATTUVAM SCHEME
Pattuvam Scheme PackagesPackage Description Contractor CostInd RsMillionCostUSDMillion1 Intake, Raw WaterMain, WTPKiriloskar Brothers,Pune1,109 282 Transmission Main &Associated WorkSPML, Bangalore 1,219 273 Distribution Systems KRKCPL,Hydarbard650 174 Service Reservoirs IVRCL, Hydrabard 395 8Overall 3,349 80
PROJECT MANAGEMENTThe Client, Kerala Water Authority has appointed TokyoEngineering Consultants Co Ltd (TEC) as the leading consultant –The Engineer – to implement the project. The Pattuvam Scheme isled by highly experienced Senior Resident Engineer (SRE),Chandra Dissanayake who acts as Engineer’s Representative. He issupported by a project team of 36 personnel including fourexperienced Site Engineers. The SRE is responsible for managingthe day-to-day work of the project: Construction supervision, project management, progressmonitoring and reporting, quality control, verification ofcontractor’s invoices etc. Lead the construction supervision team set for the package. Liaison with the Consultant’s main office (Project Manager),Contractors and Client for the performance of the assignedcontract package.
Project Highlights• About 1,000,000 cubic meters of earthwork; 720 kilometres ofpipelines; 25,000 cubic meters of concrete and 2000 tonnes of steel.Total project value is USD80 Million.• The project is unique in its nature and complexities, characterised byits spread across a large area. In view of the massiveness of theproject and the complexities in the nature of the work components, it isa challenge and however essential and important for the SeniorResident Engineer to put in place a comprehensive projectmanagement, supervision, quality assurance and control during theimplementation.• The Project is being executed following a fast track approach.
Pattuvam SchemeST1 ST2 SHTFILTERFHWWHOHTCBKoonamTank IKoonamTank IICWTCCTP3P2P1P4CF1200 dia MS pipe 22kmINTAKETRANSMISSION MAIN 80 kmDISTRIBUTION SYSTEMSERVICERESERVOIRSSLPB 1PB 21100 dia MS pipe 22km630 Km pipelinesWTP 93 MLDPazhassi DamAServe for population of 530,000Reservoir Capacity - 27 ML
Package 1Component DetailsIntake Pump-well, Intake-well, Connectingpipeline & BuildingsRaw Water Main (supply &laying)11 km 1118 mm dia MS PipelineWTP Various treatment structures & staffbuildings
IntakeIntake well & intake houseFoot bridgePump well & pump houseConduits for intakeRaw water pumps, surge vessel & pipingStaff housingSub station for intake
Water treatment Plant StructuresStructure NameRaw water Inlet/Cascade Aerator & Magnetic flow meter chamberLamella Clarifiers& FlocculatorsRapid Gravity Sand FiltersFilter control buildingUsed wash water holding tankChlorine contact tank & Treated Water ReservoirTreated water pumping stationBalancing reservoirChemical BuildingChlorine buildingSludge balancing tank & pump houseMCCSludge ThickenerSludge LagoonsRoads, Compound, LandscapingStaff housing
Package 2Transmission Main & Associated WorkFrom the Clear Water Reservoir at the WTP the water flowsby gravity to the Master Balancing Reservoir at Koonamfrom where it flows to 7 zonal reservoirs and through 2booster pumping stations to 5 zonal reservoirs. The totallength of transmission main is 82 km.
Package 3The project area has been divided in to 21 majordistribution zones to be served by 1 MasterBalancing Reservoir (MBR) and 12 zonalreservoirs. The total length of distributionnetwork is 625 km.– DI pipeline of 150-500mm dia 56 km– uPVC pipes of 75-280mm dia 428 km.– PE pipes 90 &110mm dia 139km
Laying distribution pipeline (PE) on countryside
Special Machinery for hard latraite excavation in trenches
Special Machinery – smaller versions for narrow rural roads
Package 4From Master Balancing Reservoir atKoonam water flows to 7 zonal reservoirsand through 2 booster pumping stations to5 zonal reservoirs.– Over Head Service Reservoirs 12– Ground Level Service Reservoirs 1