CDM has been assisting the Public Works Commission (PWC) of the City of Fayetteville, North
Carolina in the planning and design of their water distribution infrastructure for more
than 10 years. Over the
past few years, PWC has received discolored water complaints from the Vanstory Hills,
Montclair, and Haymont areas during the warmer weather months (generally starting Memorial
Day weekend). In early May 2001, PWC received an extremely high number of discolored water
complaints in these areas leading PWC to authorize CDM to conduct a discolored water
evaluation to identify the potential causes of the discolored water events. The evaluation
identified three contributing factors:
deterioration of unlined cast iron pipe, a major source of color-causing material; and,
pump operational impacts.
In order to address these causative factors and to assist PWC in their mission to provide the
highest level of water quality and customer service, and to prudently manage their investment in
water distribution infrastructure, CDM recommended that the following three tasks:
define the existing flushing program;
develop a predictive maintenance program for scheduling replacement and
maintenance of water distribution pipe; and,
develop pumping sequence strategies at the School Road re-pump facility that
provide gradual flow changes and reduces transients/surges in the western portion of the
distribution system.
These tasks evolved into a distribution maintenance development project involving two phases.
The primary objectives of Phase I were to minimize future discolored water complaints in the
Vanstory Hills, Montclair, and Haymont areas by improving the flushing program and
determining the most effective method to operate the School Road re-pump facility and WTF
high service pumps in order to minimize the potential for discolored water. This paper describes
the enhanced UDF program and its results. Phase II will expand refinement of the flushing
program to all areas of the distribution system and will include development of a predictive
maintenance program. Includes tables, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 06/15/2003 |
