Project 4

ROCKALL / DWR CYMRU - WELSH WATER 1998 MAINS REFURBISHMENT PROGRAM

For 5 months during 1998 ROCKALL worked for the Capital Management Mains Refurbishment Team at Welsh Water. Our remit was to produce a set of figures for both OFWAT and the Drinking Water Inspectorate on the length, material and lining type of old iron water mains to be upgraded post 2000 (AMP 3)

To enable us to produce this information we used Welsh Water's own computer system - Gisamap a system used for holding all information on water plant throughout Wales. This is a live system with daily updates on information. As well as this we were given instruction on the use of Pyramid a system developed jointly by Welsh Water and Cleveland Geotehnics to manipulate information held on the Gisamap system, Microsoft Excel, Access Word and most importantly Microstation.

We were supplied with information on water sample locations with a failure due to high iron content, this information would then correlate with customer complaints in the region and a scheme would be suggested to the technicians responsible for that area (Water Quality Zone). If the scheme was justified we then calculated the lengths of all cast iron, spun iron and ductile iron mains under 12" diameter in that zone and recorded the information in table form for submission.