technologies for leak detection & illegal connections on...

Technologies for Leak Detection &

Illegal Connections on Water Networks

Dale Hartley

Consultant

dale.hartley@acquestra.co.uk

+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: info@acquestra.co.uk W: www.acquestra.co.uk

KMT Service EOOD Sredna gora Str. 89 Sofia 1303, Bulgaria VAT No: 203173447 T: +359 888 781 788 E: kmt.servicebg@gmail.com W: www.kmtservice.bg