KY to use new sewer line technology
GILKEY/Sun Staff Writer
When a sanitary
sewer line failed in front of Colby Station, Winchester Municipal
Utilities Co. officials feared the worst, but there may be a silver
lining in the wake of the break.
commission approved using new technology in the more than 2,500 feet
of sanitary sewer line that needs to be repaired following the
collapse of the line in front of Colby Station in February.
ripping of more than a mile of sanitary sewer line along the Bypass,
causing major traffic disruptions, the utility is hiring an
Indianapolis company to install a liner inside the old pipe. The
liner then hardens to a smooth substance that will support the
failing pipeline, explained WMU general manager Vernon Azevedo.
is minimal disruption,” he said. “We don't have to dig up the
Wal-Mart parking lot and along the Bypass.”
The other big
advantage is a cost factor, he said. It generally costs about $110
per foot to replace an entire section of pipe, but this contract,
with Insituform Technologies Inc., will cost $80 a foot.
The liner will be
put down the manholes in the area, and hot water will be shot into
the lined pipes. The hot water causes the liner to harden to the
walls of the existing pipe, creating a smooth, PCV-like type of
pipe. The technology has been used for more than 10 years, and
larger cities have utilities it for several years, Azevedo
explained. It's currently being used in Lexington at Triangle and
Thoroughbred parks, Louisville, Cincinnati and Nashville. Mike
Flynn, director of operations and engineering, said he spoke with
representatives for other cities and the technology, and the
contractor, came well-recommended.
advantage, Chairman Dexter Noble pointed out, was the seal would
prevent inflow and infiltration, a problem that has plagued WMU
since the utility started treating sewage. Inflow and infiltration
is rainwater and other runoff that ends up in the sanitary sewer
system through holes and line crossings.