Use of GIS - Geographic Information System - as a key tool for water losses management in Central Business Unit (SABESP MC) Alessandro Muniz Paixão Sao Paulo Water and Sanitation Company SABESP Brazil
Sumary SABESP and Metropolitan Region of Sao Paulo GIS SABESP - SIGNOS Aplication GIS MC and Results
Central Business Unit - MC Oldest infrastructure in the metropolitan region 711,000 connections 5,900 km of mains 32 bulk supply zones 214 PRV s (covering around 50.8% of the network) Averagepressure of 45 meters ILI: 5.3 (varying from 26.66 to 2.7 in the supply zones) Total water losses: 397 L/conn/day (58.5% real and 41.5% apparent)
Sumary SABESP and Metropolitan Region of Sao Paulo GIS SABESP - SIGNOS Aplication GIS MC and Results
GIS SABESP - SIGNOS GIS (*) Enterprise Application Sabesp containing the spatial representation of all its physical assets (stations, fountains, aqueducts, reservoirs, networks, customers, etc.). It s integrated with leading business systems SABESP: CSI, SIGAO, NetControl e SGM (*) GIS Geographic Information System
SIGNOS - Formation SIGNOS assembled from integrated data (various sources) Customer Sewerage Water Networks Digital Cartographic Base
Spatialization of operational occurrences Customer complains Call Center Pole Maintenance receives Team performs repair Leakage Point x
SIGNOS - Coverage Some figures... 4,5 million connections spatialized; 27.500 km networks of water distribution; 1.100 km of mains; 18 water treatment plants; 80 water pumping stations; 305 reservoirs; 389 boosters; 926 PRV's; 120 mil valves;
SIGNOS Overview Integrating g processes
Sumary SABESP and Metropolitan Region of Sao Paulo GIS SABESP - SIGNOS Aplication GIS MC and Results
MC Strategy INVESTMENT PROGRAM OF LOSSES GOAL SIGNOS SETTING THE TARGET DIAGNOSTICS PLANNING EFFICIENT INTERVENTION
MC Strategy MC Real losses : 60% Apparent losses: 40% Pressure management Speed and quality of repairs Unavoidable Annual Real Losses Target Potentially Recoverable Real Losses Active leakage control Pipelines and service connections management
Intervention Tools Real loss management Main Intervention 2006 2007 2008 2009 PRVs amount of installed (un) 5 15 10 10 Total of PRVs (un) 179 194 204 214 PRVs covered area (%) 38 39 40 51 Periodic Surveys (km) 7.364 4.482 5.321 4.903 Replacement of service connections (un) 43.143 49.988 40.163 28.218 Rehabilitation of old mains (km) NC 21,3 19,5 19,5 Decrease Indicador on Losses de Perdas indicator Totais (L/lig x (l/con/day) dia) 700 600 500 400 300 200 100 0 620 558 548 498 431 397 2004 2005 2006 2007 2008 2009 Corrigido id
EXAMPLE 1: Loss Management Reports Where does water come from? Losses indicator SUPPLY ZONE (l/con/day) (/ / jan/09 jun/09 DERIV IPIRANGA 707 681 JARDIM AMERICA 571 854 JARDIM SÃO PEDRO 734 761 LAPA 624 715 MOOCA 444 397 PERDIZES 655 1.181 PINHEIROS 1.117 1.253 SAPOPEMBA 311 159 VILA ALPINA 402 394 VILA FORMOSA 391 386 VILA MARIANA 530 490
EXAMPLE 2: Installations of PRVs Mapping of Static Pressure and PRVs areas at MC UNIDADE DE NEGOCIO CENTRO MAPA PRESSÕES ESTÁTICAS LEGENDA FAIXA DE PRESSOES ESTATICAS < 30 mca 30-50 mca 50-70 mca > 70 mca AV. RIC AR DO JA FET Limite VRP
AV. RIC ARD OJ AFE T EXAMPLE 2: Installations of PRVs in Ipiranga p g Supply pp y Zone Several Areas
EXAMPLE 3: Replacement of service connections Distribution of service break frequency in MC
EXAMPLE 3: Replacement of service connections in p Sapopemba Supply Zone
Example 4 : Rehabilitation of old mains Age distribution of mains in Central business Unit ( 2009)
Example 4: Rehabilitation of old mains in Cursino Supply Zone Before 19 km renewed/year (0.32% of total mains) After 22
Example 5: Apparent Losses - Case Se Region Inactive connections per block at Se Region (2009)
Conclusions The use of GIS for loss reduction has become essential if you want to achieve good results, concerning the complexity and the various factors involved. Another key factor is the agility obtained in the analysis, diagnostics and monitoring the results in a scenario where resources are limited and it is necessary to accelerate actions which are essential to confront the dynamism required in the operation of the Metropolitan Region of São Paulo.
Acknowledgment Engª Debora Soares Mellato SABESP / MCEP Engº Francisco José F. Paracampos SABESP / MC Eng Marcos Aurélio Martins SABESP / MCI Eng Nagip Cesar Abraão SABESP / MAG Tecn Roberto Abranches SABESP / MCEA
Thank you! Further Information: ampaixao@sabesp.com.br p www.sabesp.com.br