WRc's technical experts performed technology evaluation and assessed capabilities of techniques for manhole inspection and rehabilitation, and developed an industry specification for their use.
best practice guidance on manhole rehabilitation for staff and contractors
review of techniques' suitability to UK water industry requirements
confidence in companies' decisions for manhole rehabilitation solutions
investment in methods that are both fit for purpose and cost-effective
Manholes are essential wastewater assets, and the primary means of access for sewer networks inspection and maintenance. Knowing the condition of these structures and estimating the residual asset service life is vital to determine asset intervention strategies but also inform financial planning, prioritise maintenance and maximise investment return.
Over time, the condition of manholes deteriorates and defects may occur, which can lead to infiltration and inflow that has such an adverse impact on wastewater collection and treatment and result in major issues for the network, but also safety hazards from the potential collapse of the structure. Deterioration of manholes may also lead to material falling into the sewer causing a potential blockage. Manholes’ structural and service condition can be an important system performance indicator.
Whereas the inspection and rehabilitation of wastewater pipelines is well understood through the implementation of the Manual of Sewer Condition Classification and Sewerage Risk Management systems, knowledge of the condition assessment and rehabilitation of manholes was lacking.
WRc addressed this need for a technical specification document that covered both the inspection and rehabilitation of manholes in a recent collaborative project with Thames Water, Severn Trent Water, Northern Ireland Water, and Irish Water.
The specifications for network operators provides a step-by-step approach to the management of manholes.
Whether you are a multi-national corporate, a regulated utility company, a government department, a contractor or an independent technology developer or supplier our team will work with you to deliver exceptional service and create valued solutions for your needs.
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