Report No FR0094

A SUMMARY REPORT ON THE DoE SEWER RENOVATION DEVELOPMENT TRIALS

FR0094

Mar 1990

SUMMARY

I OBJECTIVES

To determine the installation performance of developing sewer renovation systems through a series of formal trials and establish the long term characteristics of the materials used to enable specification and design procedures to be developed.

II REASONS

The current market for sewer renovation systems is insufficient to provide adequate support for the development of novel systems. These novel systems will increase competition and provide renovation solutions not previously available. The only way such novel systems can develop and gain acceptance is through a scries of carefully monitored trials, and detailed materials testing

III CONCLUSIONS

  1. The Sewer Renovation Development Trials, initiated by the Department of the Environment have been successful in accelerating the acceptance of several novel sewer renovation systems.
  2. The following systems have achieved full established status through these trials and further experimental work under trial conditions will not be required:
    1. Ferrocement coatings and linings - Ferro Monk Systems Ltd.
    2. Non circular polyethylene sliplining (RoMo Line) - John Kennedy (Civil Engineering) Ltd.

    Guidance data for these systems has been published as Addenda to the Sewerage Rehabilitation Manual and Water Industry Specifications are also available.

  3. The following systems have achieved interim established status subject to further work as detailed being carried out- This additional work will be progressed by WRc to ensure completion.
    1. Replacement moling - Validation of an assessment of the effect of pipe splitting on adjacent pipelines (work to be carried out jointly with British Gas Plc).
    2. Ferrocement coatings - (Alphacrete Construction Linings UK Ltd) - Materials testing to be carried out.

  4. The Trials have produced data which will allow Water Industry engineers to make a considered judgement as to the most suitable technique available for renovation of a sewer and assist them to design and specify the system to their own requirements.
  5. The continuing emergence of new systems will produce a requirement for monitoring and assessment to be carried out on an ongoing basis. These systems should be monitored under contract trial conditions and reported to the Water Industry.

IV RECOMMENDATIONS

  1. The procedure of monitoring and assessing new sewer renovation systems should be continued as required by the Water Industry.

V RESUME Of CONTENTS

This report summarises the background to the DoE Sewer Renovation Development Trials and describes the organisation of the Trials together with details of the participants and their progress through the Trials procedure.

Copies of the report are available from FWR, price 15.00, less 20% to FWR Members.