999-995-411.10_REV A
8
Pipe Patch
Pipe Preparation For Patch
1. Use video inspection camera equipment (“camera”)
and determine:
• The location and nature of the pipe damage and
required patch
(Figure 7-1).
– The diameter and length of the patch that is
needed. If needed, multiple patches can be
applied for longer repairs.
See Installing Multiple
Patches
section.
– The pipe in the area to be patched should be
mostly round.
– If the packer will be placed such that portions
of the packer will be unsupported. This would
include:
• Openings over 1" in diameter (such as T’s or
pipe damage).
• The packer extending into a larger size pipe or
out of the drain.
Figure 7 – Generalized Pipe Patching Steps (Sleeve/Containment Not Shown, Patch Position Shifted For Clarity)
INSPECT THE LINE TO INVESTIGATE THE DAMAGE
CLEAR ALL BLOCKAGES AND CLEAN THE LINE WALL-TO-WALL
RE-INSPECT THE LINE TO ENSURE IT IS FREE OF DEBRIS AND
CONFIRM LOCATION AND SIZE OF REPAIR
ENSURE PACKER CAN BE NAVIGATED TO THE PATCH LOCATION BY
PERFORMING A TEST INSERTION
PREPARE THE PATCH AND POSITION THE PACKER IN
THE PROPER LOCATION
INFLATE THE PACKER TO THE REQUIRED PRESSURE.
ALLOW THE RESIN TO CURE FOR THE RESIN SET TIME
ONCE RESIN IS CURED, DEPRESSURIZE THE PACKER
REMOVE THE PACKER
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INSPECT THE LINE TO INVESTIGATE THE DAMAGE
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