UK WATER INDUSTRY RESEARCH

 

Leakage

Incidence and Causes of Repeat Bursts at Old Repairs

Reference: 19/WM/08/71
ISBN: 978-1-84057-883-6
Published Date: 18/11/2019

Analysis was undertaken at a national level to examine the proportion of mains bursts that are caused by failures of previous repairs, and how these vary between pipe materials and UK water companies.

Bursts identified as such were analysed to determine the likely cause of the failure; whether this was due to issues present at the time of the initial repair (e.g. poor workmanship), or to deterioration of the repair materials used.

Focusing on issues identified in the analysis, consolidated guidance has been prepared for maintenance operatives carrying out mains repairs in order to minimise the risk of future repeat failure.

Price: £150  

Smart Metering and Smart Networks for Leakage Management

Reference: 19/WM/08/70
ISBN: 978-1-84057-880-5
Published Date: 25/10/2019

The purpose of this UKWIR project was to gather information to identify and review the use of smart metering and smart networks for leakage management. To review the status of the water industry in the UK and Ireland and internationally both currently and looking towards the future with regards to how smart meters and smart networks can assist in improving and developing better leakage management. The project produced:

1) A report covering the detail of the current practices, looking forward to emerging solutions, identifying areas of opportunity for better leakage management, the benefits of smart networks and recommendations for UK and Irish water companies.

2) A technology scan reviewing smart metering and smart network products. The technology scan looked at both existing products that have had significant use by the industry and new emerging solutions some of which have the potential to transform the way water companies use smart networks for leakage management.

Price: £250  

The Impact of Burst-Driven Mains Renewals on Network Leakage Performance

Reference: 18/WM/08/67
ISBN: 1 84057 863 7
Published Date: 23/11/2018

A burst-driven renewal programme can achieve a reduction in burst frequencies leading to a reduction in the natural rate of rise (NRR) of leakage. This results in a reduction in the optimal survey frequencies, in turn reducing the costs of active leakage control (ALC) to maintain leakage at the current level. Understanding the full impacts on a range of key performance indicators (KPIs) for a DMA improves will help the industry to take a full totex view of benefits of future investment and allow existing asset management models to be calibrated appropriately.

This study assessed the historic impact of burst-driven mains renewal (mains only) on the operational costs of leakage management on DMA network performance. A representative industry dataset of 487 burst-driven mains renewal schemes from four Water Service Providers (WSPs) was included. Data was normalised to mitigate variation linked to operational, geographic, and climate differences between WSPs. The normalised dataset was used to build non-linear models to predict the performance of KPIs at the level of DMA based on DMA characteristics and current performance.

KPI performance was successfully modelled for each of NRR, total DMA mains repair numbers, mains repairs numbers of renewed sections, leakage, minimum achieved leakage, and supply interruptions.

This report details the new model development and approaches to quantify and optimise the targeting of burst-driven mains renewal programmes by application of individual company data sets. The findings have been incorporated into an Excel tool for ease of application to individual company data sets to support investment planning and optimisation.

Price: £150