Technical description

Halcrow developed the existing set of Mid Kent Water's Wesnet network models to enable strategic planning to be undertaken on MKW's distribution network.

In addition to their planning role, the models have been used extensively by Halcrow on a number of projects including the planning of local distribution improvements, assisting leakage reduction, resolution of system anomalies and OFWAT regulatory reporting. These models replicated the performance of the principal mains in the network (eg 150mm and above) but did not accommodate some of the smaller mains.

Recent software advances in network modelling and hardware developments have enabled models to accommodate all mains within distribution systems.

Being aware of the potential benefits MKW requested Halcrow undertake a feasibility study to determine the benefits of 'all-mains' models for MKW.

Halcrow undertook the study, producing a report "Determination of Modelling Programme", which included the identification of the costs associated with model construction and some of the potential uses. Development of the AMP4 Strategic Business Plan will be one of the principal areas where the models will be used in the future.

Halcrow was commissioned to undertake the construction and calibration of MKW distribution system. The MKW system consists of 7 district distribution supply zones or WISZs, Maidstone , Ashford, Canterbury , Burham, Stansted, The Weald and North Downs.