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New technology helps find any leaks [AS PART OF the commissioning process, the newly-laid pipeline was

tested for leaks using a mixture of helium and compressed air. The process was carried out by SUEZ Advanced Solutions UK, the first company in the UK to employ that method of testing. The new pipeline would normally be pressure tested using the traditional method, where the main is filled with water and then the pressure is increased to test for any leakage. That method of testing was going to be very challenging for a number of reasons, so SUEZ were asked if they could use the helium leak detection equipment as a way of commissioning water pipes. The mixture of helium and compressed air was injected into the pipeline and pressure was increased for a set period of time. If no decrease in pressure was noted the pipeline was deemed watertight and ready for disinfection; if any decrease in pressure was witnessed the leak detection equipment was deployed in order to detect the leak. The leak detection equipment, known as iDroloc, is designed to look for increased levels of helium which indicates where the leak is located. The principle of the system is that helium is introduced into the water flow. Any leaks in the pipework are identified when the gas/water escapes through and leaks in the surrounding area. The water carries the helium out of the pipe and, as the gas is lighter than air, it rises to the surface. The concentration of helium in the atmosphere is very small, allowing detection at ground level. At the time of writing, just over 3km of pipe has been surveyed, with a small number of very small leaks being identified. Dee Valley Water is also using the SUEZ ‘ice pigging’ method in its extensive mains cleaning operation. Ice pigging is a highly-effective and exceptionally low-risk method of removing sediment, biofilm and other objects from pressurised water pipes, providing the ultimate alternative to conventional pipeline pigging or other pipeline cleaning techniques. Suez Advanced Solutions UK deliver innovative methods of water and wastewater management throughout the UK. Its suite of environmental technologies and services deliver optimised methods of water network management for the water sector. Utilising a wealth and depth of experience in water and sewerage networks, a wide range of pioneering

iDroloc is designed for the urban environment although off-road equipment is also available and innovative process solutions are now successfully providing commercial benefits to water companies, and improving service quality for the end user. Its industrial water specialists deliver bespoke solutions based on the specific needs and process requirements of the customer – to provide reduced cost, energy and water consumption. Committed to continuous development through technical innovation, Suez Advanced Solutions UK transfers knowledge and expertise from a diverse range of industrial sectors, offering a comprehensive understanding of processes and relevant environmental and industry legislations. q

In the red circle a small leak has been identified by iDroloc. Once the pipe was exposed a very small leak was located by iDroloc and confirmed using a soapy solution. This size leak would be virtually impossible to find using traditional techniques

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1CHK 2016 mag p1 108 online  

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1CHK 2016 mag p1 108 online  

Construction London Build 2016 Scotland Build 2016 Zoos Land of the Lions London Zoo Brexit Working at Height NASC CISRS PASMA CPD MEWPs Roo...