Electro Scan UK to assess 31 miles of sewer condition using leak detection technology
(UI) — Electro Scan (UK) Ltd. has been awarded an additional 50 km (31 miles) of sewer condition assessment project for Southern Water, working under framework contractor, Cappagh Browne.
Last year Electro Scan (UK) Ltd. carried out their first large project for British-based Southern Water covering 51 km (31 miles) of sewer condition assessment.
In total, Electro Scan’s partnership with Southern Water and Cappagh Browne has accumulated 130 km (81 miles) of sewer assessments over the last 2.5 years.
International sewer agencies traditionally used high-resolution closed-circuit television (CCTV) cameras to evaluate sewer and storm drainage pipes.
But, CCTV’s inability to accurately assess leak locations at pipe joints, water tightness of service tap connections, and cracks in the pipe wall, often incorrectly diagnoses infiltration points, i.e. where wet weather can enter and overwhelm sewer pipes, contributing to ongoing and unresolved sewer overflows, back-ups, and residential flooding.
In contrast, Electro Scan’s patented technology assesses 360-degree of a pipe’s wall, automatically determining leakage rates in litres per second or gallons per minute, for defective joints, cracks, and water tightness of connected service taps.
Location and quantification of all entry and exit leak locations represents a key differentiator between Electro Scan and CCTV, including the ability to tell the difference between superficial cracks and cracks that penetrate a pipe wall.
Electro Scan is also able to assess newly lined Cured In Place Pipes (CIPP) for water tightness; results unavailable using Acoustic Sensors, CCTV, Data Loggers, Electro-Magnetic, or Satellite leak detection tools.
“It’s been great working with Electro Scan (UK) over the last 12 months delivering the last project of 51km sewer condition assessment,” Cappagh Browne’s Paul Purton said. “It’s been refreshing to champion this kind of technology in our fight against groundwater infiltration, and the results have been having a positive impact across the nine (9) catchments we covered.”
British-based Southern Water provides essential water services to 2.6 million customers and wastewater services to more than 4.6 million customers across Kent, Sussex, Hampshire and the Isle of Wight. Last year, revenues totaled £823 million (US$992 million).
The UK Electro Scan Team has been using a combination of tools to complete the projects, including the ES-400 Push Rod which can go up to 115m (377ft) and the ES-600 Van-based system which can travel up to 300m (984ft).
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