South East Water ‘Triangulation’
The leakage team came to Syrinix to look at new ways of understanding what was going on within their DMAs.
Understanding the impact of transient monitoring on trunk mains
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Trunk main investigations
South East Water hired Syrinix for a consultative project to support the identification of contributory factors to trunk main failures, which was impacting their ability to meet regulatory targets.
By looking at the root cause of transient events on trunk mains which had a history of bursts, they hoped they could mitigate the cause and therefore better optimise the network.
One investigated pipeline contained an Electrically Operated Valve (EOV) which was thought to be a cause of transient behaviour. PIPEMINDER-S immediately picked up a high-pressure transient spike which on overlaying SCADA data related to the opening and closing of this exact EOV.
The valve was replaced but not before time was taken to quantify the size of the events, before and after the valve change which had an immediate impact on the pressure transient activity. Fig 2 shows the old EOV pressure variation between 6-14 bar in red, with the new replacement valve pressure variation between 7-7.5 bar in orange.
The multiple PIPEMINDER-S devices did also give much more general insight into the propagation around and the impact on network operations.
More case studies
Canal de Isabel II ‘Trunk main pilot’
Leak detection pilots on Madrid trunk mains in rural and city locations.
Vitens ‘Transient monitoring investigations’
A pilot project was implemented to discover how pressure transient monitoring could be used to localise network events.
