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Printer Friendly VersionSelected Information - Completed Research

CP055  Sewer Manholes & Other Confined Spaces Operator Guidance Sewerage
With changes in confined space legislation, this research produced practical guidance for sewer system operators, managers and designers, specifically to consider alternatives to confined space entry.

The collaborative project involved 6 sewer system component manufacturers, specialist CCTV and Rodding contractors, a Local Authority Pest controller, WRc and a group of 5 Water Utilities. The research:

  • Assessed all sewer operational activities that may require confined space entry. This enabled non-man entry alternatives to be identified, encouraged a greater use of non man-entry techniques and identified areas where a greater focus was required to develop "remote" techniques.
  • Encouraged the emergence of new non-man entry techniques, including the transfer and adaptation of existing technologies from overseas and other industries.
  • Assessed potentially available technologies that could be adapted for the avoidance of man-entry, in particular their practicability in sewer system maintenance. This included practical trials on prototype designs with routine maintenance like rodding and CCTV work to establish the practicality of the systems.
  • Considered how sewer/pumping station design practice could be updated, to enable and encourage the greater use of non-man entry techniques.

Benefits

The guidance will:

  • Enable sewer system operators to assess the options for complying with the recent changes in confined space legislation.
  • Help achieve a considerable reduction in the need for confined space entry in sewer systems with the practical advice given in the documentation.
  • Enable operational functions to be undertaken more cost effectively.
WRc's Portfolio Programme
Summary of the £1.5 million per annum research programme

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