Articles | Volume 10, issue 2
Research article
06 Jul 2017
Research article |  | 06 Jul 2017

Quantity and quality benefits of in-service invasive cleaning of trunk mains

Iftekhar Sunny, Stewart Husband, Nick Drake, Kevan Mckenzie, and Joby Boxall


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Short summary
This paper presents an assessment of quantity and quality performance of a trunk main cleaning using ice slurry pigging intervention. Hydraulic calibration showed a 7x roughness height reduction after ice slurry pigging, although turbidity response due to carefully imposed shear stress increase remained significant, indicating loose materials had not been fully removed from the pipe wall. Due to ongoing material accumulation, one-off intervention may not be sufficient to manage the quality risk.