kwik-ZIP’s spacers make waves at WSAA

In mid-2016, kwik-ZIP’s HDX Series casing spacer was the first ever spacer system to be approved as compliant with WSA PS-324. The successful appraisal of the HDXT Series marks the second instance in which kwik-ZIP’s casing spacers have been formally recognised as complying with WSA PS-324 for casing spacers. 

Notably, both products are the only casing spacers on the market that have been approved as compliant by WSAA. 

The WSA PS-324 Product Specification prescribes casings spacer requirements for correct protection of carrier pipes when installed inside casings and was released in early November 2015. The specification outlines various requirements of the spacer including use of materials, abrasion resistance, requirement for wear pads, runner height flexibility and minimum runner spacing around the pipe.

Jason Linaker, Managing Director and creator of the Australian-owned kwik-ZIP HDXT and HDX series, says that he is proud to have a second WSA PS-324 compliant series officially recognised by the industry. The recognition will afford kwik-ZIP the chance to continue to support safer and longer lasting installations across the board.

“kwik-ZIP casing spacers will protect pipes, make installation easier and extend the life of your asset, and now with WSAA approval for two product series, choosing the right spacer for longevity and success is even easier,” says Linaker.

The HDXT Series casing spacer can be used for medium to heavy weight pipe materials including steel, ductile iron, GRP, FRP, concrete, PVC and PE. Furthermore, it’s suitable for both pressure and non-pressure pipelines in grouted and un-grouted installations.

The casing spacers utilise a segmented design that enables the system to be used on a variation of carrier pipes from 100 mm OD to 3000 mm OD.  Spacers for larger diameter carrier pipes are also available. The spacers are manufactured from kwik-ZIP’s engineered thermoplastic blend. 

The spacers incorporate low friction high abrasion resistant wear pads, attached to load sharing runners. The number of segments required for each spacer is determined by the outside diameter of the carrier pipe.

kwik-ZIP spacers are used and recommended by pipeline and civil contractors around the world.

“Flexibility of the design means various runner heights across the two series of products can be achieved, allowing for different pipe/casing combinations and a broad range of carrier pipe dimensions,” says Linaker.

“Although spacers are usually a small part of the overall pipe installation process, correctly designed and fitted non-metallic spacers with low friction runners can significantly increase the life expectancy of the pipeline by mitigating corrosion, protecting it from abrasion and scoring during insertion and by reducing installation forces on joints during slip lining.”

The different runner heights across the HDX and HDXT models ensures that pipeline installers can handle a very broad range of carrier pipe OD and casing host pipe ID combinations. It also grants installers the ability to custom pipe position for grade control or centring.

In addition to receiving WSAA approval, other kwik-ZIP products have also been added to the Accepted Infrastructure Products and Materials (IPAM) list for the southeast Queensland Water Supply and Sewerage Design and Construction Code (SEQ Code). 

Likewise, kwik-ZIP have also been added to the Melbourne Retail Water Agencies (MRWA) approved products list. The MRWA is a joint association of three major water retailers owned by the Victorian government: South East Water, Yarra Valley Water and Greater Western Water.

WSAA appraisal information can be found at


For more information visit kwik-ZIP.

This article appeared in the August edition of Trenchless Australasia.

50 m long mural dazzles Mannum to Adelaide pipeline

In collaboration with the Murray River, Lakes and Coorong Tourism Alliance, the Mid-Murray Council and Palmer’s Collier Park Community Association, South Australian artist Jack Fran has painted a mural on a 50 m section of the Mannum to Adelaide pipeline.

The 87 km long pipeline delivers raw River Murray water to SA Water’s drinking water treatment plant in Anstey Hill, before being distributed to thousands of customers across metropolitan Adelaide.

SA Water’s general manager of strategy, engagement and innovation Sandra Ricci said SA Water will continue to investigate ways to visually improve infrastructure for the benefit of the community.

“The Mannum to Adelaide Pipeline plays a critical role in delivering water to thousands of our customers, and we recognise the concrete exterior provides the perfect canvas for large-scale art projects for locals and passers-by through the region,” said Ricci.

“Taking just five days to paint, the artwork recognises the area’s amazing achievement of being recognised as the River Murray Dark Sky Reserve – one of only fifteen located around the world, and the only recognised dark sky reserve in Australia.

“This is an excellent example of people across the community working together to conceive yet another tourism attraction to the region, and to see the final product adorning the pipeline for everyone to enjoy is a credit to Jack and his talents.”

Tourism development manager with the Murray River, Lakes and Coorong Tourism Alliance, Bill Nehmy said the artwork would be a great benefit to the areas tourism sector.

“The River Murray area already has a diverse and popular range of silo artworks in Karoonda and Coonalpyn, and this piece provides yet another addition to this art trail,” said Nehmy.

“This will be a drawcard to bring tourists to our region for years to come, and we are excited for everyone to enjoy the end result.”

Click here to check out the expansive 50 m mural on SA Water’s socials.

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Primus Line, Baker Hughes partnership

TDM partners with NordiTube

TDM is a proudly Australian owned and operated drain service specialist with over 30 years’ experience. TDM offers a range of drain services including the rehabilitation, maintenance and inspection of pipeline infrastructure across Australia.

With operations across NSW, VIC and WA, the company is dedicated to providing high quality service to customers and community.

TDM utilises cured-in-place pipelining (CIPP) as a method by which pipelines are rehabilitated without the excess costs associated with excavation and/or replacing existing pipelines. TDM has over 15 years of experience working with CIPP and relines an estimated 5000 pipelines a year.

CIPP lining comprises a resin-saturated lining tube installed in a pipeline. The tube creates what is known as a close fit pipe-within-a-pipe as a structural solution to pipeline deterioration.

TDM’s CIPP liners are custom made from felt then impregnated with specially formulated resins suitable for various conditions and applications, including UV cured GRP relining, ambient cure polyester resin and heat cured thermosetting resin.

The CIPP method can be applied to structurally rehabilitate pipelines with defects such as cracks, offset joints and structurally deficient segments.

Thankfully, almost any shape and size of pipe can be structurally rehabilitated including vertical, horizontal, square, rectangular or round piping. Likewise, the CIPP method can be used for pipes with 90-degree angle bends, P traps, S traps, junctions or elbow.

The opportunity to work with NordiTube as its strategic supply partner grants TDM the chance to further implement its core values as a company to continue providing better, more efficient and affordable services to its Australian customers.

NordiTube has a well established position as one of the leading technology provides for trenchless pipe rehabilitation and has been producing CIPP liners for over 30 years.

Backed by a global trading company, the experts of NordiTube offer a wide range of innovative systems, materials, equipment, expertise and technical support to customers worldwide.

The NordiTube range comprises optimised solutions for maintenance, rehabilitation and renewal of gravity and pressure pipes.

TDM Pipeline Solutions and NordiTube invite those attending the 2022 No-Dig Down Under (NDDU) conference to visit the team at stand #023.

To find out more about what live demonstrations will be on offer at the expo, click here.

Register to attend NDDU here.

Future-proofing CIPP liners and pipe rehabilitation solutions

Country Manager Kevin Woolf tells Trenchless Australasia that IMPREG recognised early on that trenchless pipe rehabilitation using cured-in-place pipe (CIPP) liners is the technology of the future. 

Further developing this avenue, the company’s CIPP liner systems are developed using innovative high-tech processes, and set new standards.

“Our success proves us right. IMPREG CIPP liner systems for UV curing are used all over the world,” he says. “We are a reliable solution partner at all times, and commit ourselves to the highest future-proofed quality and to environmentally conscious conduct.”

Woolf says the IMPREG liner GL16 was developed in 2016 for all common pipes from DN 150 up to DN 2000.

As a result of good material characteristics and new fibreglass design, IMPREG was able to develop a more finely nuanced gradations of wall thickness.


Not only does this benefit the company’s customers financially, but the IMPREG liner GL16 makes it easier to deal with large dimensions.

“Through the IMPREG liner GL16, the company has consistently extended its position as a technology leader in the market segment from DN 1200 upwards,” Woolf says.

“The unique construction of the IMPREG liner allows a certain level of compensation for dimensional variations in the pipe. We can produce defined dimensional changes in our factory.

“In the Australian Pacific region our range js GL16 which is made up of 0.8 mm fibre glass layers and inner foil, outer fleece and a yellow UV protection sleeve from DN150 to DN2000 with wall thickness ranging from 3 mm to14.6 mm.”

Woolf highlights that the high-tech CIPP liners from IMPREG are simply inserted into the pipes via the manholes, and cured using UV light. The rehabilitated pipe can then be returned to operation immediately after curing, with the company able to rehabilitate up to three pipes in a single day.

With a warehouse located in Brisbane, standard liners in Australia and New Zealand are available to be shipped across the nation, with the liners ready to go for: DN150, DN225, DN300, DN375, DN450, DN525, and DN600.

Woolf says the main aim for IMPREG this year is to continue supporting its customer both onsite and technically.

“Our biggest goal for 2022 is to continue our after market care,” he says. “The customers’ success is our success, meaning our after care is just as important as our product quality.”

As part of the company’s after market care in Australia, Woolf is able to help with structural designs, review CCTV on job sites and provide onsite technical support.

“New customers will also have the opportunity to attend a training session and find out how we already implement the trenchless pipe rehabilitation of the future,” he says. “Our application engineers are onsite for your first project, and support you with advice and assistance during the installation of the IMPREG liner.”

With no need to bring a project to a stop, IMPREG is also able to rapidly and effectively rehabilitate pipes which carry aggressive or higher-temperature waste waters.

“IMPREG CIPP liners are future-oriented, high-tech products which provide all options for the rapid, effective, and economical rehabilitation of pipes of very differing diameters,”says Woolf. “With our liners, we at IMPREG set new standards that will lead us into the future.”

For more information visit the IMPREG website. 


VAPAR provides CCTV solutions to asset managers

Avoid the backlog

A common industry challenge is how to effectively manage the increasing volume of CCTV pipe inspection data that accumulates over time. Backlogs occur when inspection projects reach completion, but the packaging of the subsequent required programmed work is delayed.

A CCTV backlog can then grow larger when the pace of condition inspections continues at a faster pace than the review and decision process. This dilemma is often exacerbated by resource challenges where engineers are spread thinly across multiple asset management tasks, and when efficient data access is not in place to support the decision-making process.

The receival of CCTV inspection results should not be considered the final delivery of a program, but rather a point in the circular process of pipe asset management. Each step should be designed to synchronise and complement the one that follows.


Pipe condition assessment process. Image: VAPAR

Acquiring the 1 to 5 condition gradings is only one part of managing a pipe network. Questions to consider when implementing a successful asset management strategy include:

  • Do I have confidence that I’m inspecting the right percentage of my network, and the correct pipes within it?
  • Do all relevant stakeholders in my organisation have access to data from past inspections?
  • Am I updating my GIS and asset management systems with condition results?
  • Is my process designed to inform asset risk, value, and future inspection programs?

No silos in the cloud

Having a suitable storage option for the large amount of video files that CCTV inspections generate, while retaining access for stakeholders to view reports and make maintenance and rehabilitation decisions, presents both storage and software challenges for councils and utilities.

Greater Western Water (Victoria) and Richmond Valley Council (NSW) are two such organisations that have turned to the VAPAR.Solutions platform to significantly improve the access and management of their inspection file libraries covering the last 5 years.

Moving to a cloud-based solution provides options to keep both GIS mapping and asset management systems up to date, while removing the reliance on portable hard-drives and messy network folder structures that can lead to data silos and unintended information barriers.

Same storage for pushrod and zoom footage

Traditional CCTV pipe inspection software and processes have been designed to work with pan-tilt-zoom crawler cameras. This often leads to inspections collected using pushrod and pole-mounted zoom cameras being poorly catalogued and lacking a common approach to access and compare condition information. In many cases, a video is captured but soon after the footage and data disappear due to poor storage and reporting options.

2021 saw VAPAR successfully run projects that provided the opportunity to import, analyse and produce inspection style reports for a range of camera hardware. The opportunity to store, map, report, and track decisions for crawler, pushrod, and pole camera inspections all in the one location has significantly increased the value and useability of this type of footage for asset owners. Having access to more condition collection methods allows for greater flexibility and increased coverage of a network to better manage risk and improve the understanding of pipe infrastructure.

Mildura Rural City Council sought options to economically survey a significant percentage of their stormwater network that would provide condition data to inform their operational and capital works programs. They recently engaged Interflow, a VAPAR Partner, to complete this package of inspection works using pole-mounted zoom cameras with results available directly through VAPAR’s browser platform. This has seen the value and detail of the collected data increase with better access to videos, images, condition results, and inspection reports. This data is formatted to import directly to GIS for thematic mapping and broader user access. Over 80km of inspections are scheduled to be completed during this project.

VAPAR began the new year processing footage for Muswellbrook Shire Council, with inspections completed by Mullane, a Central Coast / Hunter based VAPAR Partner. Some of the earliest of adopters of advancing technology for the CCTV pipe condition assessment process have been rural and regional councils.

One of the primary influences for this trend has been the demand for engineers and project managers to spend less of their time watching videos and become more focused on managing pipe risk. Understanding this risk using targeted defect frames and open data presentation has been designed to make the pipe condition assessment workflow smarter with improved outcomes.

Gunnedah Shire Council have a large inspection program that began in January. Michael Ludlow (Project Manager Water Services) explains some of the reasons that led to new solutions for managing their sewer network.

“We were looking for an innovative solution that could evaluate CCTV footage and give an accurate assessment of our sewer infrastructure that took the human factor out of the evaluation process, Council required VAPAR to be able to integrate with CCTV contractors to give us the best possible result that was accurate and cost effective we believe that VAPAR ticked all those boxes.”

Regional councils aren’t alone in realising the benefits of VAPAR’s new technology. In Sydney, both Blacktown City Council and Campbelltown City Council have adopted VAPAR to drive improvements in workflow and decision-making. Campbelltown is one of the faster growing areas in Sydney and have found that VAPAR’s AI processing and data outputs don’t just improve their condition assessment program. They now use VAPAR.Solutions as part of their new pipe acceptance and end of warranty testing, this has enabled them to reduce the turn-around time from weeks to days.

Implementing iterative machine-learning updates to the AI processing engine and the further development of automated solutions, VAPAR continues to roll-out this advanced technology to councils and utilities in 2022.

For more information visit the VAPAR website. 

This article appeared in the February 2022 issue of Trenchless Australasia. Click here to view the digital edition of the magazine.