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PREVENTIVE MAINTENANCE / CLEANING CREWS The
Sewer Department's aggressive preventive maintenance program ensures that
sewer mains remain in proper working order and prevents many problems before
they occur. Hydraulic sewer jet cleaners are used to clean sewer lines with
high pressure water hoses removing grease, grit and other debris from the
lines. These sewer jets are also equipped with hydraulic root saws that are
used to cut tree roots from main lines where roots are a problem. In
addition to cleaning sewers these crews also respond to stoppage complaints.
The program's goal consists of routine cleaning every public sewer main in
which an obstruction may result in a
backup into a residence or business. The routine cleaning frequency for
these lines is intended to be at least a minimum of once every two years.
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MAINLINE STOPPAGE CREWS The Sewer
Department provides 24 hours a day seven days a week service in response to
reports of sanitary sewer backups and overflows. Upon being notified of a
problem, a two-person crew with a hydraulic sewer jet cleaner is dispatched to
the location. Generally the crew will contact the complainant to determine the
nature and extent of the problem. The crew then inspects and cleans any sewer
6 inches in diameter or larger which could remedy the problem. Any obstruction
determined to be in a public sewer is followed up with an internal TV
inspection of the sewer line. In most cases, after a complete review of the
incident, the location and the cause
of an obstruction can be determined. If the problem is in the customer's
line, the Sewer Department will attempt to open the blockage with a sewer tape
temporarily, and will advise the customer to contact a plumber or sewer
service company.
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CLOSED CIRCUIT TELEVISION INSPECTION The
Sewer Department uses a state of the art closed circuit television system to
internally inspect sewer mains and service line connections. This system
consists of a color camera with a pan and tilt head which can turn 90 degrees
in any direction and is self propelled through sewer lines transmitting a
picture to a monitor and video recorder located inside a trailer. Using this
system, problems can be located and identified quickly and without excavation
so that proper corrective actions can be taken.
Image of leaking 8" sanitary sewer pipe from camera |
Control room is mounted in a tandem wheeled trailer, and is equipped with
the latest technology. |
Remote camera drives thru pipe on rubber tracks. It has a rotating head
and its own light source. |
REPAIR CREWS The Sewer Department operates
two repair crews. One crew is responsible for repairs to manholes. The other
crew is responsible for repairs to sewer mains. Excavations have been up to 20
feet deep. These crews repair sewer mains that have been determined to be in
poor condition by TV inspection that was done following a stoppage or because
of a problem suspected during routine cleaning.
STATE-OF-THE-ART-METHODS
The Sewer Department is constantly seeking methods to do jobs
that are safer, more cost effective, and at a minimum inconvenience to our
customers.
When conditions warrant, sewer lines can be rehabilitated by several
different methods of internal trench-less rehabilitation, eliminating the need
for open excavation. This system takes only hours as opposed to days for
conventional methods.
ACCOUNTABILITY The Sewer Department places
much emphasis on accountability of its activities and functions throughout the
year. To provide this service, daily reports are compiled to maintain a record
of all work and can be used to capture labor costs, equipment costs, and
material costs for all jobs, projects, and activities.
Producing and storing these kind of reports enables the Sewer Department to
monitor its work activities and its production, also making it possible to
better serve you and the community.
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