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Printer Friendly VersionSelected Information - Completed Research

CP371a  Rising Mains Inspection - Getting the Inside Picture Sewerage
Project Appreciation and Objectives

The Portfolio project CP371 - New Inspection Methods of Sewage Rising Mains, which gained the support of seven Water Utilities, has successfully identified and tested potential techniques for surveying and assessing the condition of metallic or plastic rising mains.

The next phase for the project is to assess the techniques in a series of trials which will determine the performance of the prototype inspection tools in live rising mains. The project will then, for the successful systems, develop a business plan for future implementation and exploitation by the project participants.

Trials will be undertaken at agreed locations in participants networks. We would seek to target sites where problems are believed to exist and would seek the involvement of all participants.

Benefits to Clients

Assessment of cost and effectiveness of new inspection techniques for rising mains leading to:

  • Reduced bursts in rising mains.
  • Reduced pollution incidents.
  • Reduced disruption and cost of repair.

Work Programme

  1. Develop inspection specification including site data collection; cost data collation; performance indicators and likely scenarios.
  2. Develop scoring/ranking methodology to compare the advantages and disadvantages of the techniques agreed.
  3. Analyse locations proposed by participants.
  4. Carry out trials.
  5. Review costs & performance.
  6. Liaise with participants to develop exploitation plan and implementation programme.

Project Output

  • Rising mains inspection specification for successful technique/s.
  • Case studies of inspection of selected participants' rising mains.
  • Exploitation plan and implementation programme.
  • Dissemination workshop.

Related WRc Work

  • Twelve years commercial application of the Sahara® inspection platform for the identification and location of leaks and condition in pressurised systems.
  • New Sewage Rising Mains Inspection Methods, CP371, 2009.
  • Reducing Rising Mains Failures Through Pre-Emptive Inspection, CP192, 2004

WRc's Portfolio Programme
Summary of the £1.5 million per annum research programme

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