KARNATAKA URBAN WATER SUPPLY MODERNIZATION PROJECT (KUWSMP)
TThe project refers to “Improve water service quality to a continuous supply (24×7) across the two project cities of Hubli-Dharwad (equivalent population 950,000), through the establishment of institutionally and financially sustainable service delivery arrangements at ULB level”. The project will be implemented on behalf of GoK by the KUIDFC.
The project assignment included a comprehensive assessment of the existing system of Hubballi- Dharwad (equivalent population 950,000), the cost effective design of works needed for upgrading the system to a continuous pressured water supply, procurement of works/goods/services as Construction Manager for the Hubballi-Dharwad Municipal Corporation, construction supervision, system operation, maintenance of the system and customer relations (including customer interface, billing and collection) of this continuously pressured water supply system to be performed in 3 stages over the contract period of 12 years. The first stage of the project included the development of an Infrastructure Improvement Plan in order to describe in detail the required major asset investment program with the associated benefits in service levels and optimization of energy.
The key tasks of the IIP included:
– Review of the condition assessment of system and service levels, establishment of Non-Revenue Water (NRW) baseline.
– Development of a comprehensive NRW strategy and review of leakage control activities results.
– Review the water resource monitoring and water quality surveillance system
-Analysis of raw and clean water transmission and distribution network, by using hydraulic modeling software and existing data. The existing network capacity was evaluated and the network components requiring replacement or rehabilitation were identified and additional parts were proposed as needed. In total, 2,282km of existing pipes and 1,854km new pipes were modelled and analysed (DN100 to DN1200).
-Creation of Hydraulic Zoning for the new proposed network for equitable distribution of water and 24/7 for 30 year horizon (82 DMAs)
-Optimization of the Service Storage was conducted and proposals on new storage reservoirs wherever needed were given. In total, 17 balancing tanks, 24 service tanks and 3 bulk tanks of the proposed system were modelled and analysed (total volume of tanks modelled 93,265 m³, design of new tanks with a capacity range from 113 m³to 14,500m³).
-Preparation of designs including production of drawings, reporting, hydraulic calculations etc and Preparation of Bill of Quantities for cost estimation
-Assessment the hydraulic capacity of the two main Water Treatment Plants (153.8 MLD and 52 MLD).
The key activities undertaken by Z&A comprise the following:
-Design works including production of drawings, documents, calculations and specifications required for up-gradation of the system to continuously pressured supply
-Analysis of hydraulic network structure and operation using network hydraulic modelling software and data to arrive at existing network capacity
-Network demand assessment
-Proposal of a full NRW methodology;
-Proposal for sustainable management of the available supply based on hydraulic modelling scenario;
-Design of necessary project infrastructure water networks (170km of conveyance and transmission mains, 169 km of distribution networks), one WTP and 48 distribution tanks.
-Specification for SCADA, instrumentation, PLC, billing and metering including all hardware and software
– Design basis – civil, electrical, mechanical, instrumentation