The Evolution of Cured-In-Place Pipe

Posted by Katie Breeden on Jan 2, 2019 11:42:00 AM

Originally called “insitu form,” meaning “form in place,” cured-in-place pipe (CIPP) liners were developed in 1971 by Eric Wood in London, England. Prior to that, trenchless technology methods were limited to sliplining or grouting techniques. But those methods were less feasible: grout is a short-lived solution that is expensive to apply, and sliplining also requires grouting, a measure of trenching and results in significant diameter loss. Wood recognized the opportunity to improve rehabilitation efforts with liners that were cured directly inside the pipe, which led to the invention of CIPP liners. CIPP repairs the damaged pipe with a liner that, essentially, becomes a new, jointless pipe within a pipe. Wood successfully executed the first CIPP repair by pulling a felt liner impregnated with polyester resin through the pipe and finishing it with an ambient cure.

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Topics: Trenchless Rehab, Sewer Rehabilitation

Repairing Service Connections

Posted by Nicole Lygo on Dec 20, 2018 11:50:27 AM

Within a sewer main, one of the largest sources of infiltration is at service connections. In areas with older sewer systems, construction requirements and methods were less concerned with tight seals and durability. During the first half of the 20th century, hammer taps were not uncommon. (For the uninitiated, a hammer tap, commonly found with vitrified clay pipes, involves using a hammer to smash a hole in the main to accommodate the lateral.) Gaps may have been filled with grout, but less conscientious workers may have also used miscellaneous items such as flattened tin cans or scraps of metal. Modern construction methods are significantly more precise and less leak-prone, but the service connection is still particularly susceptible to groundwater infiltration and many older connections remain in use.

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Topics: Sewer Infrastructure, Trenchless Rehab, Sewer Rehabilitation

The Cost of Expansion

Posted by Nicole Lygo on Oct 31, 2018 6:40:52 PM

With the possibility of more federal investment in infrastructure on the horizon, many municipal contractors are looking to increase their capabilities. American wastewater systems are rapidly degrading, so rehabilitation is one of the larger areas of growth. Depending on what type of work your business already offers, some rehabilitation methods may be easier to get into than others. For spot (point) repairs, the most popular options are CIPP spot liners (generally under four feet), mechanical point repair sleeves and grout. Each method has its strengths and weaknesses as a repair solution, and each one has variable costs in terms of initial capital and maintenance cost. Getting an idea of what different methods can cost may give you a starting point for choosing the best option for your business.

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Topics: Trenchless Rehab, Sewer Rehabilitation, Point Repair, Quick-Lock

Grout is Out!

Posted by Katie Breeden on Sep 26, 2018 1:03:54 PM

When choosing the proper pipeline rehabilitation technique, repair teams need an effective and lasting solution. Trenchless or no-dig technologies are preferable to high-cost, high-risk trenching alternatives whenever possible, as they save resources and cause minimal disturbance during installation. Yet while all trenchless solutions bring these benefits, some prove to be more practical than others.

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Topics: Inflow and Infiltration, Quick-Lock, Trenchless Rehab, Sewer Rehabilitation, Product Features

Making Mechanical Point Repair Easy

Posted by Katie Breeden on Sep 12, 2018 1:41:15 PM

As the name suggests, Quick-Lock mechanical point repair sleeves solve pipe rehabilitation problems safely, reliably and quickly. Point repair sleeves address common pipeline concerns like infiltration, circumferential and longitudinal cracks, holes and offset joints, but without the lengthy time needed for CIPP and grout methods. Sleeves can also be installed serially when appropriate.

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Topics: Trenchless Rehab, Sewer Rehabilitation, Point Repair, Quick-Lock

Using Fiber-Optic Cure Verification to Monitor Your CIPP Cure Process

Posted by Allison Symonds on Jun 28, 2018 11:00:00 AM

CIPP liner curing is a complex process involving sensitive chemical reactions influenced by unpredictable environmental conditions. Although reliable when performed to spec, if a CIPP liner is improperly installed, the repairs can be costly.

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Topics: Trenchless Rehab, Resources

Subsurface Utility Imaging Leads Trenchless Rehab with Quick-Lock

Posted by Allison Symonds on May 17, 2018 10:30:00 AM

sui-logo-large1Subsurface Utility Imaging (SUI) has been identifying, marking, tracing, mapping, cleaning and inspecting underground utilities since its founding in 2010, but it was recently called in for a unique project. An old warehouse in upstate New York had been wasting away, largely vacant and unused until an engine manufacturer signed on to lease the entire facility. However, before moving in, a remodel was required, including an evaluation of the vast network of sanitary and stormwater conveyance piping underneath the warehouse.

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Topics: Customer Spotlight, Quick-Lock, Trenchless Rehab

What's your Sewer IQ? Take our Sewer Rehab Methods Quiz

Posted by Venay Sehgal Bhatia on Mar 19, 2018 8:00:00 AM
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Topics: Sewer IQ Quiz, Trenchless Rehab, Point Repair

Customer Spotlight: Franklin Township Sewer Authority

Posted by Venay Sehgal Bhatia on Mar 12, 2018 6:04:42 PM

The foundation of Franklin Township’s Sewerage Authority’s sewer inspection program is a dedicated focus on preventative maintenance. “Being proactive is the only way we can manage over 200 miles of sewer pipes inundated with infiltration,” said Scott Nocero, Franklin Township Sewerage Authority’s (FTSA) Operations Manager. Elements of their preventative maintenance program include ongoing sewer flushing, inspections and rehabilitation. These efforts have resulted in a significant reduction in inflow and infiltration (I&I) throughout their collection system.

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Topics: Quick-Lock, Trenchless Rehab, Video, Inflow and Infiltration, Resource Allocations

Meeting Standards to Provide Quality Products

Posted by Katie Breeden on Feb 24, 2018 10:11:57 AM

 

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Topics: Trenchless Rehab, Point Repair, Standards and Compliance

About PRT

Pipeline Renewal Technologies delivers innovation to processes ranging from pipe point repair to relining and lateral reinstatement. Cutting edge technology, combined with dependability and support, have made us the industry's partner of choice.

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