Line Stop in Creek
They called the Pro's! |
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The Bella Vista
Water Utility District in Northern California needed to have a line
stopped. They called up the pros at Tap Master to do an unusual line
stop down in a deep creek bed. They had a riser that was the only place for a possible
problem to occur in about 30 miles of piping.
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Each Tap Master
utility truck comes fully equipped for the job and
with heavy duty
cranes.
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First an area in
the creek bed had to be made so the work could begin.
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Note: Riser - "An
accident waiting to happen"
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Nate tapes the Line Stop fitting that will allow the riser to be cut
off below grade.
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A temporary line
stop valve was threaded on the the line stop fitting.
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The Hot Tap
Machine was installed and the line stop fitting pressure tested.
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Nate
found the job to be more difficult than he had imagined. The pipe
was suppose to be unlined steel, but it was actually concrete lined.
He
had to switch from a high speed steel hole saw to a carbide-tipped
unit
which was needed to cut through the concrete.
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After the hot tap
was completed, Nate inserted the Line Stop unit
through the valve.
He then expanded the plug inside the unit to stop
the water that
was under pressure. He then opened the top of the valve
to make sure
the line stop was holding.
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The Bella Vista
Water Crew then hooked a chain to the top of the valve
and attached it to the bulldozer. They then cut through the
pipe with a
torch and moved the unit off to the side.
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Note: Nate had to get a 100% line stop so water would not hinder the
welding procedure when the welders installed the cap.
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The
cap was welded on to the top of the extruding pipe. Nate then
backed off the line stop unit to check for leaks. The weld was
perfect
the
first time out!
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The line stop
unit was removed and a completion plug installed. Then
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line stop valve was
removed.
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The unit was then
capped.
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The job was
complete! Now they can pour the concrete and cover up
this
old outlet.
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