Underground Infrastructure - September 2023 - 38

Ensuring Quality Control and Proper
Storage of Cured-In-Place Pipe Lining
By NASSCO Member Travis Savy, Technical Director, Savy & Sons
Cured-In-Place Pipe (CIPP) has revolutionized
the rehabilitation of underground pipelines,
offering a cost-effective and efficient solution.
What was once considered an alternative
solution to pipe replacement, CIPP is, more
and more, becoming the accepted go-to pipe
rehabilitation method. To ensure the growth of
the industry, proper quality control, inspection,
and storage of CIPP lining materials, including
liners, resin, and calibration tubes, are
essential. This will ensure the longevity and
performance of rehabilitated pipelines. The
NASSCO Lateral and Building Pipe Committee
provides valuable insights on how to maintain
the integrity of CIPP lining materials throughout
the entire process.
Quality Control and Inspection:
1. Liner Inspection: Thoroughly inspect the liner
for any visible defects, such as wrinkles, folds, or
misalignment. Ensure that the liner's length and
diameter match the specifications. If any visible
defects are discovered, contact the manufacturer
or distributor immediately and do not install those
products until they are tested and deemed safe
for installation.
2. Resin Mixing: Accurate resin mixing is crucial
for consistent curing. When mixing resin, select a
mixing paddle or device which is appropriate for
the resin type and quantity of resin. Be careful to
not draw air into resin while mixing, as air bubbles
in the resin can cause water tightness and
structural challenges. To assist with this, make
sure that the mixing paddle is fully submerged in
the resin mixture and do not run the speed of the
mixer too fast to cause a large funnel where air
can be drawn into the mix. Follow the
manufacturer's guidelines for resin-to-hardener
ratios and mixing times. Regularly test the resin
mixture for viscosity and temperature to achieve
optimal results. Never use resins that show signs
of hardening or crystallization during mixing.
3. Calibration Tube: Inspect the calibration tube
for proper placement and secure attachment to
the liner. Verify that the tube's dimensions match
the pipe's specifications to achieve accurate liner
expansion. In addition, choice of calibration tube
should be paired with the cure mechanism to
ensure the tube can withstand the type of cure
and pressures of inversion and/or cure duration
and has been appropriately tested for such. The
calibration tube should also be pre-inspected for
defects in the same manner as the liner.
Proper Storage: Elevated Racks

Underground Infrastructure - September 2023

Table of Contents for the Digital Edition of Underground Infrastructure - September 2023

Underground Infrastructure - September 2023 - 1
Underground Infrastructure - September 2023 - 2
Underground Infrastructure - September 2023 - 3
Underground Infrastructure - September 2023 - 4
Underground Infrastructure - September 2023 - 5
Underground Infrastructure - September 2023 - 6
Underground Infrastructure - September 2023 - 7
Underground Infrastructure - September 2023 - 8
Underground Infrastructure - September 2023 - 9
Underground Infrastructure - September 2023 - 10
Underground Infrastructure - September 2023 - 11
Underground Infrastructure - September 2023 - 12
Underground Infrastructure - September 2023 - 13
Underground Infrastructure - September 2023 - 14
Underground Infrastructure - September 2023 - 15
Underground Infrastructure - September 2023 - 16
Underground Infrastructure - September 2023 - 17
Underground Infrastructure - September 2023 - 18
Underground Infrastructure - September 2023 - 19
Underground Infrastructure - September 2023 - 20
Underground Infrastructure - September 2023 - 21
Underground Infrastructure - September 2023 - 22
Underground Infrastructure - September 2023 - 23
Underground Infrastructure - September 2023 - 24
Underground Infrastructure - September 2023 - 25
Underground Infrastructure - September 2023 - 26
Underground Infrastructure - September 2023 - 27
Underground Infrastructure - September 2023 - 28
Underground Infrastructure - September 2023 - 29
Underground Infrastructure - September 2023 - 30
Underground Infrastructure - September 2023 - 31
Underground Infrastructure - September 2023 - 32
Underground Infrastructure - September 2023 - 33
Underground Infrastructure - September 2023 - 34
Underground Infrastructure - September 2023 - 35
Underground Infrastructure - September 2023 - 36
Underground Infrastructure - September 2023 - 37
Underground Infrastructure - September 2023 - 38
Underground Infrastructure - September 2023 - 39
Underground Infrastructure - September 2023 - 40
Underground Infrastructure - September 2023 - 41
Underground Infrastructure - September 2023 - 42
Underground Infrastructure - September 2023 - 43
Underground Infrastructure - September 2023 - 44
Underground Infrastructure - September 2023 - 45
Underground Infrastructure - September 2023 - 46
Underground Infrastructure - September 2023 - 47
Underground Infrastructure - September 2023 - 48
Underground Infrastructure - September 2023 - 49
Underground Infrastructure - September 2023 - 50
Underground Infrastructure - September 2023 - 51
Underground Infrastructure - September 2023 - 52
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-november-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-october-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-september-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-august-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-july-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-june-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-may-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-april-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-march-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/underground-infrastructure-february-2023
https://www.nxtbook.com/gulfenergyinfo/gulfpub/january-2023
https://www.nxtbookmedia.com