Reduction of the Technical Losses Component of the NRW in water Networks in Sultanate of Oman Yousuf Al-Siyabi Operation Performance Expert, Public Authority for Water (DIAM) Sultanate of Oman WSTA 13 th Gulf Water Conference Water in the GCC: Challenges and Innovative Solutions Kuwait Institute for Scientific Research (KISR), State of Kuwait 12-14 March 2019
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Reduction of the Technical Losses Component of the NRW in ... · DMA FQ13 Pressure management MNF Pressure (m) Expon. (MNF) No PRV Single Stage PRV Dual Stage PRV Flow modulated PRV
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Reduction of the Technical Losses Component of the NRW
in water Networks in Sultanate of Oman
Yousuf Al-SiyabiOperation Performance Expert,
Public Authority for Water (DIAM)Sultanate of Oman
WSTA 13th Gulf Water ConferenceWater in the GCC: Challenges and Innovative SolutionsKuwait Institute for Scientific Research (KISR), State of Kuwait12-14 March 2019
Water Scarcity
Non Revenue Water
Water Supply System in DIAM
Reduction of Technical Losses
Non Revenue Water (Losses)
Billed
metered
Billed
unmetered
Unbilled
metered
Unbilled non
metered
Unauthorized
consumptions
Meters
inaccuracies
Losses on
hydraulic
facilities
Losses on
transmission
& distribution
mains
Apparent
losses
(commercial)
Real losses
(physical
losses)
System input
volume
(treated water
production)
Revenue water
(volume invoiced)
Unaccounted
For Water
(UFW)
Non
Revenue
Water
(NRW)
Authorized
Consumption
Billed
Authorized
Consumption
Unbilled
Authorized
Consumption
Water Losses
Production , Consumption & NRW in DIAM
2011 2012 2013 2014 2015 2016 2017
Production 215,900,000 238,200,000 262,199,120 283,135,760 301,008,112 329,787,928 347,684,307
In all water networks the renew and rehabilitation is continuous process,
because the pipes have operating life, after that it start deteriorating and
breaks
Pressure Management
60 Pressure Reducing Valves Installed in 2017
Techniques of Pressure Management
0
10
20
30
40
50
60
0.00
50.00
100.00
150.00
200.00
250.00
300.00
MN
F (M
3/h
r)
Axis Title
DMA FQ13 Pressure management
MNF Pressure (m) Expon. (MNF)
No
PRVSingle Stage
PRV
Dual Stage
PRVFlow modulated
PRV
Average MNF = 137m3/hr
Average MNF = 96
Average MNF = 59
m3/hr
Average MNF =
214 m3/hr
Single Stage PRV
reduces a higher inlet pressure to a constant downstream pressure (Pressure Reducing Control) regardless of changing flow rate and/or varying inlet pressure.
Dual Stage PRV
Pressure Management Control Valve automatically adjusts the downstream pressure based upon demand changes in the system.
Flow Modulating PRV
This PRV is used to accurately limit excessive flow to a preselected maximum rate (Flow Control) regardless of changes in pressure and/or varying inlet flow.
Critical Point PRV
Pressure Management
3 Bar
2.2 Bar
PAEW Typical house connection standard (old) PAEW Typical house connection standard (New)