Suchergebnisse

AbstractThe 'water‐balance calculation'is a valuable method of assessing the integrity of many components of a company's distribution system and is used in (a) evaluating the overall performance of the system and (b) assessing, for example, leakage within distribution zones or district metered areas. However, the quality of data which are derived from balance calculations reflects the quality of the input data, and each input source (whether metered or estimated) is subject to uncertainty.This paper explores the impact of input uncertainty on the water‐balance calculation, and uses Anglian Water's annual balance as an example. The principal contributors to overall uncertainty are identified, and these show that the overall uncertainty depends upon only a few of the many inputs. Identifying these critical inputs has enabled Anglian Water staff to target the areas of their auditing chains that will yield greatest benefit to the reporting process.