# APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES

## Presentation on theme: "APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES"— Presentation transcript:

APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES
Ir. Zainuddin Bin Md Ghazali Chief Operating Officer Ranhill Water Services Sdn Bhd 83, Matang Building, Jalan Langkasuka, 80350 Johor Bahru, Malaysia. Tel: HP: Website:

NRW = System Input – Water billed
What is NRW? Non Revenue Water definition is quantity of water produced from treatment plant not billed to customer  NRW = System Input – Water billed

* A measuring scale for Water Supply company efficiency
The formula if P = System Input , C = Billed Consumption P - C = % NRW P C P * A measuring scale for Water Supply company efficiency

Infrastructure Leakage Index (ILI)
Calculation for ILI is; CARL (Current Amount Real Loses) UARL (Un-Avoidable Real Loses) CARL = physical loses includes overflow, burst, and leaks UARL = (18 x Lm Nc + 25 Lp) Pr Pr = Pressure. Avg retic and distr mains = 3.2 Bar. Lm = Pipe length from GIS in meter. Nc = Number of Billings connections. Lp = Private length, or avg communication pipe in meter.

PHYSICAL LOSSES TARGET MATRIX

Physical Loss Performance: Categories; Guide to Further Action
B C D Good: further loss reduction may be uneconomic; careful analysis cost effective improvements. Potential for marked improvements: Consider pressure management, better active leakage practices and better maintenance. Poor: Tolerable only if water is plentiful and cheap; even then intensify NRW reduction efforts. Terrible: Inefficient use of resources; NRW reduction programs imperative and priority.

Why NRW is very important to any water operator?
To fully optimize usage of treated water produced by consumers To optimize revenue Increase operational efficiency

Water Asset Registration DMA establishment Network Modeling
Where do GIS functions benefit NRW Management? In areas of: Water Asset Registration DMA establishment Network Modeling Planning & Operation

Water Asset Registration
Where do GIS functions benefit NRW Management? Water Asset Registration

Asset Registration : eliminate OUTDATED AND UNMAINTAINED DATA
Created once in Excel and no update after that TACIT

JOHOR DIGITAL MAP & PIPELINES

ASSET MEASUREMENT Source : SAJH-GIS (Apr 2013)

Asset update progress over five (5) years
Measurement Unit Year 2006 Year 2010 % increase Pipe Length Km 15,114.20 19,191.12 27% Valve 39,519 54,207 37% Hydrant 24,033 36,117 50% Air Valve 8,393 12,537 49% Double Air Valve 4,848 13,953 188% Water Sampling Point 861 933 8% End Cap 4,623 6,514 41% Customer supply point 46,164 501,103 985% * Source of data courtesy of SAJ Holdings Sdn Bhd

Single point of reporting for water assets
GIS for Asset Registration Single point of reporting for water assets Avoid outdated and unmaintained data

Where do GIS functions benefit NRW reduction?
DMA Establishment

GIS for DMA establishment
DMZ – BW16 Network Tracing to locate valves to be boundary valves for DMA

GIS for DMA establishment
DMZ polygon

Improved DMA boundaries and data value
* Source of data courtesy of SAJ Holdings Sdn Bhd

DMZ Conflict Inspector (DMZ-CI)
Conflict output

Result – better analysis for NRW by DMA (case on zero variance in number of connections
* Source of data courtesy of SAJ Holdings Sdn Bhd

Result – better analysis for NRW by DMA on commercial losses
* Source of data courtesy of SAJ Holdings Sdn Bhd

To provide scale-down NRW analysis by DMA
GIS for DMA establishment To provide scale-down NRW analysis by DMA Improve DMA boundary and data value Better analysis on commercial losses Leakage percentage and pressure management

Where do GIS functions benefit NRW reduction?
Network Modeling

Hydraulic Modeling : tedious work in Excel and plotting in hydraulic software
Create in Excel and transfer to Model

Data transfer from GIS to Hydraulic Modeling Software

Result: Analysis on DMA pressure survey (High Pressure)

Avoid redrawing of data Data transfer from GIS to Modeling software
GIS for Network Modeling Avoid redrawing of data Data transfer from GIS to Modeling software Model can be shown as layer-lapping with GIS map/Google map

Where do GIS functions benefit NRW reduction?
Planning & Operation

Pipe burst record in GIS
GIS for Planning of Asset Replacement GPS to locate burst location and record in GIS Burst location Burst Total

- for pipe replacement program
GIS for Planning of Asset Replacement Record of Asset Burst records - for pipe replacement program

Planned Shut Down & Trace to Affected Customers Application

Record of customer affected by water disruption from billing system

GIS for DMA Maintenance
Opening/closing of valve: better management on service interruption during DMZ maintenance - ZPT - Step test

Challenges & lessons learned
Be achieved with: High commitment from all staffs in the company – from top to bottom Collaboration & Co-operations Willing to improve Rapid development environments, ease of use, product reliability, and vendor stability are among key contributors to selecting integrated platform options Customer service/stakeholders’ interests must be the key indicator – fulfill the needs and efficient service

THANK YOU

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