EU Reference Document Good Practices on Leakage Management Portuguese Case Study LISBON

Size: px

Start display at page:

Download "EU Reference Document Good Practices on Leakage Management Portuguese Case Study LISBON"

Meghan Stevenson
5 years ago
Views:

1 EU Reference Document Good Practices on Leakage Management Portuguese Case Study LISBON Andrew Donnelly

supported by software application data analysis How EPAL reduced leakage by 200 m 3

2 CASE STUDY KEY POINTS How to build capacity and network knowledge to reduce water losses and sustainably maintain those gains Active Leakage Control find and fix in DMAs supported by software application data analysis How EPAL reduced leakage by 200 m 3 /hour from 500 to 178 litres/connection/day between 2005 and 2013 Be as smart as you need to be

3 NATIONAL CONTEXT We know that. Water losses within distribution systems are an economic & environmental problem which must be addressed. Annual Water Loss Value 180 M We know that. A water loss reduction project brings operational efficiency along with financial and sustainability benefits. So why. National Efficient Water Use Program Government Plan (PNUEA) NRW target : 25% by 2020 was 20%! % Absolute average % Source: ERSAR RASARP 2012 (Portuguese Regulatory Report)

9 million people in 34 municipalities in

4 EPAL 145 YEARS OF HISTORY Origins in 1868 Bulk Supply to around 2.9 million people in 34 municipalities in and around the Lisbon area Lisbon Direct Supply to 350,000 domestic and commercial customers within City of Lisbon EPAL is the largest water supplier in Portugal with a net profit of 40 M and a turnover of 143 M in 2013

Tanks ETA de Vale da Pedra OTA VALADA TEJO ALENQUER LEZÍRIAS CITY OF LISBON DISTRIBUTION SYSTEM

5 EPAL 145 YEARS OF HISTORY CASTELO DO BODE ETA de Asseiceira PRODUCTION & BULK SUPPLY SYSTEM 2 Water Treatment Plants 710 km Trunk Mains 25 Chlorination Points 41 Pumping Stations 42 Water Tanks ETA de Vale da Pedra OTA VALADA TEJO ALENQUER LEZÍRIAS CITY OF LISBON DISTRIBUTION SYSTEM 350,000 Clients 550,000 Population 250,000 m 3 Daily Demand 1,450 km Distribution Mains 5 Pressure Zones

EPAL NON-REVENUE WATER SITUATION Millennium Challenge Annual NRW volume of 40 million m 3 in Lisbon distribution network Water lost valued @ 25M & 27M kwh/year excess energy consumption To

6 EPAL NON-REVENUE WATER SITUATION Millennium Challenge Annual NRW volume of 40 million m 3 in Lisbon distribution network Water lost 25M & 27M kwh/year excess energy consumption To reduce NRW and maintain sustainable performance levels in the Lisbon distribution network, by adopting and adapting best practice used by the most efficient global water utilities Strategy Decision

7 STRATEGY REQUIREMENTS

8 STRATEGY REQUIREMENTS

control costs Optimization of Active Leak Control activities Leak Detection Target

9 COMMON SENSE SMART STRATEGY Network Segmentation & continuous telemetry monitoring Development of a focused, effective data analysis tool Focus on what is essential and control costs Optimization of Active Leak Control activities Leak Detection Target definition & Result validation Project undertaken by company employees to build capacity & retain knowledge in-house

4 PHASES TO IMPROVE NETWORK KNOWLEDGE 1. DMA PLANNING & SET UP Create metering points & telemetry Design & boundary validation DMA Implementation 2.

10 4 PHASES TO IMPROVE NETWORK KNOWLEDGE 1. DMA PLANNING & SET UP Create metering points & telemetry Design & boundary validation DMA Implementation 2. CONTINUOUS MONITORING Recording of pressure & flow Passive system with active alarms Lisbon Distribution system: 153 DMAs monitor around 1,250 km of mains & more than 98% of clients

Indicators System Alarm & Alert Management Leakage assessment & Target

11 4 PHASES TO IMPROVE NETWORK KNOWLEDGE 3. DATA ANALYSIS Integration in analysis software Practical Performance Indicators System Alarm & Alert Management Leakage assessment & Target setting Surgical Control of leakage 4. INFORMATION REPORTING DMA Proposals & Reference Manuals DMA Analysis & Audit Project Reports

16 DMA ANALYSIS PROJECT METHODOLOGY Net Nightline per DMA determined by applying UBRL & authorised usage estimates for client types to allow for target setting & validating if targets achieved

validation Leak Detection Ground microphones Accoustic Correlation Temporary

17 CASE STUDY: DMA 1060 DMA Analysis Project Methodology: Data analysis revealed Recoverable Night Flow 130 m 3 /h Fieldwork Find n Fix: DMA boundary valve validation Leak Detection Ground microphones Accoustic Correlation Temporary DMA Alterations Leak Repair Validation of results Leak location registered on GIS

18 CASE STUDY: DMA 1060 Critical Area old Alcântara roundabout Repair

CASE STUDY: DMA 1060 Water Loss equivalent to 500 000

19 CASE STUDY: DMA 1060 Water Loss equivalent to m3/year Critical Area old Alcântara roundabout Repair

Leak reduction in two DMAs paid for entire DMA project for whole city in 3

22 NON-REVENUE WATER REDUCTION SUCCESS Volume (M m 3 ) Cumulative savings of 100 million m 3 since Impact of Network Rehabilitation & Active Leakage Control Enhanced network management & control Positive results across all performance indicators Improved Resilience & greater know-how created within EPAL Challenge to maintain current performance

10828 population Context & Intervention Justification: Small council water

High burst rate Low service pressure at critical points Network diagnostic

23 APPLYING THE METHODOLOGY S. MARCOS DO CAMPO REGUENGOS DE MONSARAZ Lisbon Reguengos Council 5 boroughs population Context & Intervention Justification: Small council water department Lack of resources, typical in rural areas Excess consumption & High burst rate Low service pressure at critical points Network diagnostic & performance Leak detection intervention Resolve problem, Train staff & create capacity. EPAL S.A. All Rights Reserved.

24 APPLYING THE METHODOLOGY New Meter & Telemetry installed 9,5m 3 /h EPAL S.A. All Rights Reserved. São Marcos DMA 8,2 km 975 connections 700 population Initial Analysis Minimum Nightline > 9,5 m 3 /h Minimum Pressure < 1 bar Target Nightline < 3,5 m 3 /h

25 APPLYING THE METHODOLOGY Leak Detection campaign & on the job training 4 Leaks detected & successfully repaired Original Nightline 9.5 m 3 /h Nightline reduced 6 m 3 /h Final Nightline < 4 m 3 /h Significant pressure increase at critical point Lisbon case study, but proven that can be applied elsewhere EPAL S.A. All Rights Reserved.

26 KEY CASE STUDY RECOMMENDATIONS Provoke a cultural change at all levels and areas, adapting to new concepts of management Build water loss control capacity, both physical infrastructure and sufficiently trained staff Acquire and retain empirical knowledge of the company s network within the organisation. Success achieved by creating a dedicated water loss control team, supported directly by management, with resources and responsibility over fundamental factors; DMA planning, implementation and subsequent management Maintenance of DMA meters, telemetry and boundary valves Active leak detection Data management software with KPIs focused on water loss assessment Consider the correlation between DMA size and potential achievable water loss reduction Water loss control concepts are well-known, the challenge of sustainably managing such systems over the long-term with constant vigilance is the key goal To be effective tomorrow, we need to be efficient today

27 EU Reference Document Good Practices on Leakage Management EPAL

Lessons Learned in Conducting Acoustic Leak Detection Surveys on Water Distribution Systems at 12 Military Installations

Lessons Learned in Conducting Acoustic Leak Detection Surveys on Water Distribution Systems at 12 Military Installations Harmon Henderson, PE Perry Gayle, PhD, PE, LEED AP 14 April 2015 Presentation Overview