
Las Vegas Valley Water District ‘Main break investigations’
LVVWD experienced 3 line breaks in close proximity and installed PIPEMINDER devices to understand why.
Understanding the impact of transient monitoring on trunk mains
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.
LVVWD experienced 3 line breaks in close proximity and installed PIPEMINDER devices to understand why.
CCMWA wished to gain greater visibility and insight ito discover exactly what was going on within their transmission loop.
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