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Printer Friendly VersionSelected Information - Proposed Research

CP524  Pro-active Sewer Cleaning to Minimise Blockages Sewerage

UK sewerage undertakers report that sewer blockage numbers remain at an unacceptably high level. This leads to unwanted customer contacts and some result in property flooding and pollution incidents. The reasons for high blockage numbers are many but pro-active sewer cleaning could be part of the solution.

A recently completed portfolio project on Sewer Blockage Clearance Best Practice (CP468) has highlighted the need for best practice to be used with sewerage operations functions. This project focussed on reactive blockage clearance but there exists a parallel need to introduce good practice with programmed sewer cleaning. This would increase the effectiveness of cleaning, both by optimising cleaning frequencies and techniques, and in doing so further reduce the occurrence of blockages.

This project would extend best practice guidance to programmed sewer cleaning in a wide range of pipe sizes and locations helping to reduce operational expenditure and through less customer contacts, improve customer perception and SIM ratings.

BUSINESS BENEFITS TO CLIENTS

  • A consistent, targeted approach to planned sewer cleaning.
  • Improved performance and operative competency, to improve the effectiveness of sewer cleaning and hence reduce the number of blockages and lower operational costs.
  • Improved regulatory performance and customer perception.

WORK PROGRAMME

  1. A review of current practices, including discussions with contractors and equipment manufacturers.
  2. Field assessments to capture elements of best practice, wherever they exist.
  3. Examine new approaches/technology that could be incorporated into sewer cleaning, including the use of ‘fast pass’ CCTV.
  4. Developing recommended best practice and production of guidance.

PROJECT OUTPUT AND IMPLEMENTATION

  • Best practice guidance document regarding programmed sewer cleaning aimed at supervisors and field technicians and operatives.
  • A reference document explaining the recommended practices and the supporting reasoning. This would include strategy issues and would be aimed at operations managers and their contracting partners.
  • Training material, e.g. tool box talk PowerPoint presentations for use by companies with their own operational staff and contractors.

RELATED WRc WORK

  • CP468 Sewer Blockage Clearance – Best Practice Guidance (2012 – 2013).
  • CP290 Fats, Oils and Greases (2005 – 2009) and a recently commenced (May 2013) UKWIR project.
  • Various projects related to disposal of non sewerage related product (2006 to date)
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