technologies for leak detection & illegal connections on...
TRANSCRIPT
Technologies for Leak Detection &
Illegal Connections on Water Networks
Dale Hartley
Consultant
+44 (0)7736 000 001
Bulgaria Water Association
Inter Expo Center, Sofia
01 November 2016
Challenges of ageing
pipelines
Tuberculation Leakage
Pressure surge
Waste water
corrosion
Accessibility
Asbestos pipes
Cast iron pipes
Unknown
conditions
Air locking Blockage
detection
Cracks/damage
Illegal
connections
Finding the leaks
One way to ‘find’ leaks….
Not all leaks are visible…
Active Leakage Control is required to detect leaks which account for 85% of water loss
More often it’s this way…
A = AWARENESS L = LOCATION R = REPAIR
Water loss: m3/day
75
50
25
Leak Type
Water Lost
Daily loss
1.1 days
Catastrophic Pipe Burst
Mains: 82.5 m3
75 m3
Yes Visible Leak?
A L R
16 days
Reported Leak
Communication pipe: 400 m3
25 m3
Yes
Active Leak Detection
Supply pipe: 3650 m3
20 m3
182.5 days
A L R
No
THE IDEAL
Supply pipe: 80 m3
20 m3
4 days
No
Reducing Leak Run Time
Pinpointing a leak with a ground
Microphone (2010, Egypt)
….and today
Pinpointing a leak with a ground
microphone (approx. 1960, Egypt)
Pinpointing leaks 60 years ago
Well Proven Techniques
Wide Range of Equipment
Looking INSIDE the pipe...
Delivering Live Pipeline Assessment Solutions
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
Pipeline Inspection
Technologies
Nuclear Water Gas Industrial
Inspection Techniques &
Technologies
Tethered Free Flowing
High Resolution Visual assessment
Ultrasonic Condition assessment
Acoustic Leak detection
15
Tethered Inspection
• Leakage reduction programmes
• Operational problems
• Asset condition assessment
• Risk assessment
• Commissioning new pipelines
• Confirmation of leakage figures
• Pipe line & illegal connection location
Tethered Inspection Platform
18
• 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
Investigator
Clear Peak Over Leak Site
Software
Cumberland Terrace Stanhope Street
Stanhope Street Stanhope Street
• Illegal Connections
• Linings
• Valves
• Blockages
• Sediment
• Tuberculation
Benefits beside leakage
Illegal Connections
Benefits beside leakage
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
200mm MDPE pipe, 1.8m deep; 4 bar pressure. Located Under Driveway. Sonde Location within 100mm
Sonde marking
Leak location
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
Case Study – Leak Detection
• 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 – 12” 300mm
PipeScan Technology
PipeScan Output
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”
Verification
Finding the Weak Link
Typically, only 6% of pipes identified for replacement require
intervention
Complete analysis of pipework
NDT wall thickness and
corrosion
Uses sensible launch /
access points
Hi-resolution CCTV system
True life expectancy
measurement
Benefits of PipeScan Technology
Large range of pipe
diameters
Feed data into GIS platform as condition layer
Using the data
1
• Wide range of investigation technologies and techniques to provide an inspection and condition assessment solution
2 • Highly cost effective as a programme of works
3
• Provides data for supported, defensible intervention and asset investment decisions
To summarise:
Thank you for your time
Acquestra Consulting Cape Point House 8 Cedar Park, Titchfield Common Hampshire PO14 4LT United Kingdom T: +44(0)7736 000 001 E: [email protected] W: www.acquestra.co.uk
KMT Service EOOD Sredna gora Str. 89 Sofia 1303, Bulgaria VAT No: 203173447 T: +359 888 781 788 E: [email protected] W: www.kmtservice.bg