Forums Posts

by Clarence Valley Council Joined 01-01-0001 12:00 AM Posts 7

Water Directorate colleagues and observers For the next revaluation of water pipeline assets, CVC is investigating ways to undertake condition assessments of pressure pipelines. Previously we have based the condition assessment largely on age and pipe material, with an "over-ride" of break history. However, in the last revaluation of the sewer network when we undertook an expanded CCTV inspection program, we discovered that a much higher proportion of the sewer network was in poor or very poor condition than had previously been determined using age and pipe material. We are wondering what methods other LWUs have been using to undertake the condition assessment of pipeline network? (We have received a proposal for an AI methodology which we understand has not previously been used in NSW but a potential concern is with the data requirements. The methodology uses more than 30 predictors and we do not old many of the data parameters so our concern is that the AI may end up with a GIGO - i.e. garbage in = garbage out result). Greg

by Shoalhaven City Council Joined 01-01-0001 12:00 AM Posts 30

Greg, Like Clarence Valley we have traditionally used age and break history as the main parameters to determine condition as the cost of large scale inspection programs is usually outside the capacity of water utilities. I did however try to set up a program to use adhoc inspections such as service installations, dig ups and our internal CCTV program to provide a more cost effective system as we are out there every day digging up our assets so why not use that opportunity to record condition and atributes data to extrapolated but also confirm asset data. I used the Collector App in ArcGis and we have been recording data over the last few years but It needs a champion in the operational area to keep the awareness up as it can fall away over time as staff move on.