EPCOR Water Services Inc. (EWSI) has been actively renewing water mains for over 15 years.
The selection process consists of analyzing the number of breaks per kilometer per year. In 2002
EWSI decided renewals needed to become even more proactive. The renewal project selection
process developed criteria including the hydraulic capacity, condition test results, and known
water quality issues. In order to correlate these criteria, the location became an important
component. A Geographic Information System (GIS) analysis tool displayed all the various
data creating valuable maps. In 2002 studies used neighborhood boundaries to group and
compare the pertinent factors. In 2003 investigation expanded to include statistical analysis at a
candidate level. A candidate is a section of pipe that would normally be replaced as part of one
specific project. This added level of detail highlighted key areas of need and allowed EWSI to
focus capital dollars efficiently. This type of analysis required a balance of both the detail and
the big picture, as well as an understanding of the interconnected piping system. For example,
the solution for an area demonstrating hydraulic deficiencies was upstream within the
distribution system. This paper demonstrates the process and tips of EWSI's proactive
renewal selection method. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 200 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 04/18/2004 |
