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The process is simple. After the
Grundoburst is positioned in the exit pit, the Quicklock bursting
rods are installed through the host pipe, to the launch pit.
A flexible guide rod helps ensure smooth installation through
the host pipe.
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Once at the launch pit, crewmembers
remove the guide rod and attach the bladed cutting wheels, bursting
head, expander and new HDPE. |
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The entire configuration is then
pulled back through the host pipe. The bladed cutting wheels
split the host pipe. The bursting head and expander displace
the fragmented host pipe in to the surrounding soil while
the new HDPE is pulled in simultaneously.
The Quicklock bursting rods can
be easily removed one at a time, at the exit pit during the
bursting operation or installed into the next run as the first
run is being completed.
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For
smaller diameter pipe, a pushing blade is available. The pushing
blade splits the host pipe first allowing the Quicklock bursting
rods to be installed without resistance. |
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