Technologies for Leak Detection & Illegal Connections on Water Networks

Transcription

1 Technologies for Leak Detection & Illegal Connections on Water Networks Bulgaria Water Association Inter Expo Center, Sofia 01 November 2016 Dale Hartley Consultant +44 (0)

2 Challenges of ageing pipelines Tuberculation Pressure surge Air locking Waste water corrosion Leakage Asbestos pipes Cast iron pipes Unknown conditions Accessibility Cracks/damage Blockage detection Illegal connections

3 Finding the leaks

4 One way to find leaks.

5 Not all leaks are visible

6 More often it s this way Active Leakage Control is required to detect leaks which account for 85% of water loss

7 Reducing Leak Run Time 75 A = AWARENESS L = LOCATION R = REPAIR A L R A L R Water loss: m 3 /day 1.1 days 16 days days 4 days Leak Type Catastrophic Pipe Burst Reported Leak Active Leak Detection THE IDEAL Visible Leak? Yes Yes No No Daily loss 75 m 3 25 m 3 20 m 3 20 m 3 Water Lost Mains: 82.5 m 3 Communication pipe: 400 m 3 Supply pipe: 3650 m 3 Supply pipe: 80 m 3

8 Well Proven Techniques Pinpointing leaks 60 years ago.and today Pinpointing a leak with a ground microphone (approx. 1960, Egypt) Pinpointing a leak with a ground Microphone (2010, Egypt)

9 Wide Range of Equipment

10 Looking INSIDE the pipe...

11 Delivering Live Pipeline Assessment Solutions

12 Getting Inside the Pipe; The solution Innovative equipment inspects pipelines and detects leakage without having to dig up pipes Can survey water and industrial pipelines with the minimum of disruption to buildings and landscape Can accurately identify pipe infrastructure at greatest risk of leaks and bursts and estimate their remaining life expectancy

13 Pipeline Inspection Technologies Nuclear Water Gas Industrial

14 Inspection Techniques & Technologies Tethered Free Flowing High Resolution Visual assessment Ultrasonic Condition assessment Acoustic Leak detection

15 Tethered Inspection 15

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17 Tethered Inspection Platform Leakage reduction programmes Operational problems Asset condition assessment Risk assessment Commissioning new pipelines Confirmation of leakage figures Pipe line & illegal connection location

18 Investigator Tri-sensor heads (2 sizes) Up to 200m range (with/against flow) Pressurised insertion & seal technology Access through existing fittings Real-time analysis & evaluation software >20,000 investigations to date 18

19 Software Clear Peak Over Leak Site

20 Benefits beside leakage Illegal Connections Linings Valves Blockages Cumberland Terrace Stanhope Street Sediment Tuberculation Stanhope Street Stanhope Street

21 Illegal Connections

22 Benefits beside leakage

23 Investigator Light Sonde For Above Ground Location Tri Sensor Head Real-time analysis software Fully portable Pressurised insertion up to 16 bar Extremely robust camera head Camera bend mechanism Interchangeable hi-resolution CCTV On-board hydrophone Precise leak & illegal connection detection

24 Case Study Leak Detection Sonde marking Leak location 200mm MDPE pipe, 1.8m deep; 4 bar pressure. Located Under Driveway. Sonde Location within 100mm

25 Case Study Leak Detection Live screen-shot showing inside of pipe and acoustic noise from leak Leak located on ground using intergated sonde Excavation exposed significant leak

26 PipeScan Technology Complete analysis of pipework NDT wall thickness and corrosion Sensible launch / access points Hi-resolution CCTV system True life expectancy measurement Pipe dia: 4 / 200mm mm

27 PipeScan Output

28 Verification Cast Iron pipeline - engraved with features Pipescan Amplus - reproduced the key features of the engraved pipe and accurately measured residual wall thickness - Pipe dia: 200mm / 8

29 Finding the Weak Link Typically, only 6% of pipes identified for replacement require intervention

30 Benefits of PipeScan Technology Complete analysis of pipework Uses sensible launch / access points NDT wall thickness and corrosion True life expectancy measurement Hi-resolution CCTV system Large range of pipe diameters

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33 Using the data Feed data into GIS platform as condition layer

34 To summarise: Wide range of investigation technologies and techniques to provide an inspection and condition assessment solution Highly cost effective as a programme of works Provides data for supported, defensible intervention and asset investment decisions

35 Thank you for your time Acquestra Consulting Cape Point House 8 Cedar Park, Titchfield Common Hampshire PO14 4LT United Kingdom T: +44(0) E: info@acquestra.co.uk W: KMT Service EOOD Sredna gora Str. 89 Sofia 1303, Bulgaria VAT No: T: E: kmt.servicebg@gmail.com W: