dma set up - jalur cahaya sdn bhd

8/8/2019 DMA Set Up - Jalur Cahaya Sdn Bhd

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Malaysia Issues onNRW

DMA Set-Up

Speaker- Dato Abdul Jalil Abdul Karim


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WH AT IS A DMA?

A District Metered Area (DMA)is a small area of distribution system whichis specifically defined


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To monitor the performance of the area byvarious indicators: W ater balance, NR W% , NR W volume Level of leakage

For Active Leakage Control activities Critical areas can be prioritized the for leak

detection

For Pressure management (where possible) Eliminating excess pressure Reducing leakage volume

WHY DO W E NEED TO H AVE DMAs?


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Selection criteria 500 to 2000 connections 5km to 20 km Sufficient pressure Ability to hydraulically isolate area

GIS roles in pre-selection of area

Zero pressure testPermanent meter & data logger installationData storage & analysis

A DMA SET-UP


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GPS Ground Level Survey must be carried out for each feature (hydrant,air valve, pipeline etc) to have a view of terrain on the potential area of

DMA establishment. This information is critical for pressure managementundertaking in the near future.


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The correct pipeline registration will help define the natural boundary existedby the current supply system- suitable DMA can be planned from this

information. Pipe registration can also be used to identify the measurementof pipeline within the zone as required in the selection criteria.


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A typical inlet point to a DMA

Logger abinetLogger abinet trainer

Meter

trainer

Meter


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Data Center- H ome of DMAs Data


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Netbase W ater Management Software


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Daily DMA Monitoring using Netbase

Leakage Leakage

Repair Repair Repair Repair Repair


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After a

proper DMA Set-Up


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PENISULAR MALAYSIA


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SELANGOR


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GOMBAK DISTRICT ( Total No of Connections: )


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GB100,Kg Dato Keramat (No Of Connections : 1510)


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Info of DMA - GB100

Date Established : 30 Sep 2008Mainslength of pipe :12.84 kmNo. of connections : 1510

Pipe materials : AC ( 100

200 dia )


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PMI GB100

Permanent Meter Installation (PMI) T he purpose of PMI isto measure incoming flow into the DMA

Level : 36.197 mCoordinate : 1014405.31"E 30954.51"N


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PRV GB100

Pressure Reducing Valve (PRV) T he purpose of PRV is toreduce & control the incoming pressure into DMA

Level : 38.255 mCoordinate : 1014405.31"E 30955.28"N


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AZP GB100

Average Zone Pressure (AZP) T o measure averagepressure inside DMA

Level : 32.186 m

Coordinate : 10143'25.64"E 30957.18"N


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TP GB100

T arget point ( T P) - T he critical (minimum) pressure insideDMA

Level : 32.933 mCoordinate : 1014316.63"E 309'59.23"N


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BV 1

BoundaryValve (BV)

DMA GB.100

Outside DMA

Border Of DMA GB.100


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BV 2

BoundaryValve (BV)

DMA GB.100

Outside DMA/

District Kuala Lumpur

Border Of DMA GB.100

Border Of District


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Boundary Valve (BV)

Boundary Valve

Valve permanently closed to maintainintegrity of DMA


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Technological advancement & competition has givenmore equipment choices at lower cost- Battery operated Electromagnetic Flowmeter - GSM/ GPRS Data Logger

- Longer Battery Life

W ide GSM/ GPRS Coverage at low cost for DataPackage (only RM8/ month)

Permanent & Continuous monitoring with GSM DataLogger is cheaper than manual data download in thelong term (savings in manhour and logistic cost)

Current Practices & Technology


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Poor mappingDMA breached ( opening of by-pass & BV )Limitation of pressure management

isolated houses & elevationConnectivity issue lack of informationConflict between Operations Dept & NR W units

Supply system changes & road wideningworksShortage of skilled staff

Problem Encountered


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Th ank you!

dma set up - jalur cahaya sdn bhd

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