View the latest trenchless technology tenders

View the latest trenchless technology tenders

Nanako Stream Stormwater Upgrades Program
Issued by: Tauranga City Council
Closing date: 3 September 2020
Location: New Zealand
Description: Tauranga City Council invites proposals for this contract which comprises
Early Contractor Involvement (ECI) and construction of the following; Separable Portion A – Investigation and review of design for construction (ECI) for: Kennedy Rd Embankment / Dam Upgrade; Dam 5 flood detention embankment Wetland 5; and Wetland 5 stormwater treatment wetland.

Sewer manhole inspections
Issued by:
Mackay Regional Council
Closing date:
8 September 2020
Location:
Queensland
Description
: Mackay Regional Council requires a suitably experienced contractor to undertake detailed inspections and condition assessment reporting of 1,100 Sewer Maintenance Holes located in Mackay, Walkerston, Mirani and its suburbs including Northern Beaches and Sarina as shown on the maps in Annexures C – Sewer Maintenance Holes Inspection Services Location Maps.

Duke Street Foul Sewer Renewal
Issued by:
Invercargill City Council
Closing date:
10 September 2020
Location:
New Zealand
Description:
This Contract is for the supply of all plant, labour and materials necessary for the installation of 647 m of DN300 uPVC SN8 pipe on Duke Street between Queens Drive and Grey Street. This is to renew the existing reinforced concrete rubber ring jointed main including all associated fittings, fixtures, connections and structures.

Pipe relining and relaying works (sewer, stormwater and watermains)
Issued by:
Port Macquarie – Hastings Council
Closing date:
10 September 2020
Location:
New South Wales
Description:
Council is seeking tenders from appropriately qualified and experienced contractors to establish a panel arrangement for the provision of water, sewer and stormwater rehabilitation and pipe relining and relaying works. 

Construction of DN225 Gravity Sewer Pipe Hamilton Drive Warragul
Issued by:
Gippsland Water
Closing date:
10 September 2020
Location:
Victoria
Description: This is an AS 4000 – 1997 General Conditions of Contract, Lump Sum Contract for the supply of all plant, labour and materials necessary for the construction of a DN225 gravity sewer pipe at Hamilton Drive in Warragul.

Wastewater and recycled water network maintenance and renewals
Issued by: Kalgoorlie-Boulder City Council
Closing date: 10 September 2020
Location: Western Australia
Description: Kalgoorlie-Boulder City Council released tenders for wastewater and recycled water network maintenance and renewals. Services include pipes, valves and fittings; pipeline construction; water and sewer main construction; and water and sewage treatment plant construction

3 Waters Maintenance Contract
Issued by:
Hastings District Council
Closing date:
17 September 2020
Location:
New Zealand
Description
: Tenders are requested for the above contract which involves the maintenance of the Hastings District Council’s water, wastewater and stormwater networks providing three waters services to approximately 23,000 households and businesses. The contract includes routine reactive and preventative maintenance activities with access to renewals, capital works and asset investigations related to network condition and performance.

Each fortnightly edition of the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

IBSA continues public consultation

AUSJET/ADCVA initiated a review of the training packages through IBSA, which is now in the second round of the public consultation phase.

Through the process, AUSJECT/ADCVA has lobbied to have a new unit of competency (UOC) added to cover hydro excavation after some operators were unable to comply with the training requirements for Class B high pressure pumps used on some units due to the limited existing UOC’s.

IBSA is now seeking feedback on the draft UOC’s and skill sets for the MSM Manufacturing Training Package; IBSA asks that the Consultation Paper is referred to prior to providing feedback.

The second public consultation round is now open and will conclude on 21 August 2020, with feedback to be emailed to manufacturing@ibsa.org.au before this deadline.

IBSA will also be holding a consultation session via zoom on Thursday 20 August 2020.

To participate in the session, register here by COB Monday 17 August.

For more information visit the IBSA website.

If you have news you would like featured in Trenchless Australasia Assistant Editor Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Lytton Road Wastewater Pipeline Renewals
Issued by: Gisborne District Council
Closing date: 17 August 2020
Location: New Zealand
Description: The council is seeking experienced and skilled contractors to design liners fit for purpose to extend the useful life of these assets with at least a further 50 years and successfully install the liners before 16 November 2020.

Halifax Business Park Sewer Upgrade
Issued by: City of Bunbury
Closing date: 26 August 2020
Location: Western Australia
Description: The City of Bunbury is currently seeking to engage a suitably qualified and experienced contractor to undertake the construction of sewer infill within the Halifax Business Park in Davenport, Western Australia for the principal as required.

Stormwater Drainage Relining Works
Issued by: North Sydney City Council
Closing date: 27 August 2020
Location: New South Wales
Description: Tenders are invited from suitably qualified contractors for the structural relining of council stormwater drainage pipe sections within the North Sydney Council area. Works are to include the internal lining of stormwater drainage pipes, patch lining of drainage pipes and associated works.

Motueka Water Treatment Plant
Issued by: Tasman District Council
Closing date: 27 August 2020
Location: Victoria
Description: The Principal Tasman District Council is inviting tenders for Contract 1058 Motueka Water Treatment Plant. The scope of the work is fully described in the tender document, and involves the design and construction of the new water treatment plant including but not limited to; new bore pumps and headworks; construction of stormwater management measures; and connection to the stormwater existing network.

Rehabilitation of Gravity Sewerage Reticulation Mains
Issued by: Tweed Shire Council
Closing date: 9 September 2020
Location: New South Wales
Description: This tender has been called to engage a suitably qualified and experienced organisation to provide structural rehabilitation for 9.4 km of 150 and 225 mm gravity sewer mains within the Tweed Shire using non-evasive technology. The intent of the rehabilitation is to increase the useful life of the asset and increase its level of service. Council is after a quality product and installation to ensure the longest possible future life for the asset.

WBBROC Sewer Relining Program
Issued by: Fraser Coast Regional Council
Closing date: 20 September 2020
Location: Victoria
Description: Fraser Coast Regional Council, on behalf of the Wide Bay Burnett Regional Organisation of Councils (WBBROC), is inviting tenders from suitably qualified and experienced contractors to provide sewer rehabilitation services. The work includes all activities and materials to rehabilitate existing sewer mains from DN150 to DN900 including: CCTV survey, sewer cleaning, sewer relining and refurbishment of property connections.

Each fortnightly edition of the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Winching to a win for top supply services

Due to COVID-19, the Hire and Rental Industry Association Australia had to postpone its 2020 Company of the Year competition; however, Winch Hire Australia is set to return in 2021 as one of two finalists, nominated for its unmatched service offerings.

Winch Hire Australia offers a variety of specialised diesel and electric winches for the pulling of all different sized pipes and liners. Its hiring services are available across the country with rentals also available for projects in nearby countries such as Papua New Guinea and Fiji.

The right products for the job

Winch Hire Australia National Sales Manager Troy Moulder says the use of winches is mandatory for relining works as it would be impossible to complete projects safely and efficiently otherwise. Currently, the company’s most common winches used throughout the lining industry are the 3 t electric winches and the 4 t, 6 t and bigger 10 t diesel winches.

Mr Moulder says Winch Hire Australia is always looking at ways to improve methods of hauling, with more products expected to be supplied in the future as they are developed and manufactured.

“We have invested more than 24 years in the industry, continuously improving our equipment to the latest technology,” he says.

In addition to supply services, Winch Hire Australia also provides its customers with onsite assessment and evaluation through reliable, direct communication with its experienced staff.

A rear view of one of Winch Hire’s winches, which are available as diesel or electrical winches.

Building ‘go-to’ relationships

Mr Moulder says over the past 13 years, Winch Hire Australia has worked closely with Interflow on a wide variety of projects, which has allowed a great relationship to develop between the two teams.

“One particular project comes to mind where we supplied our 4 t ZAD WINCH to assist Interflow with the relining of a series of pipes at Southport Spit, Queensland,” he says.

“You could say we are the ‘go-to’ company when they require hauling equipment. Matt Power, Branch Manager of Winch Hire Australia, has built a standing relationship with the team at Interflow over the years; understanding their projects and the types of equipment that they require to get the job done safely, efficiently and on time.”

Winch Hire Australia also supplies many other companies with lifting or hauling equipment, having been involved in many major projects including the Clem Jones Tunnel in its base city, Brisbane.

“There is no project too big or too small for Winch Hire Australia,” says Mr Moulder.

The use of winches is mandatory for relining works as it would be impossible to complete projects safely and efficiently otherwise.

This article was featured in the September 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Winch Hire website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

No catch-22 with MCS on board

McRobert Contracting Services (MCS) is an Australian-owned and operated industry leader in the refurbishment of underground assets and polyvinyl chloride (PVC) pipeline technology. Operating out of Perth, WA, the company has been in operation for more than 30 years and has evolved into a business whose specialised services are sought out by both public and private sectors around the country.

MCS has worked on hundreds of projects across its lifetime and has developed a unique patented method for the structural relining of access chambers suffering from sulphide corrosion. The company’s strong relationships with a range of water operators across Australia are helping it achieve its vision of being the first choice for rehabilitation services, backed by its consistent ability to offer industry leading services and products to existing and future customers.

Doing what MCS does best

On 12 June 2020, MCS – in association with the Water Corporation – completed a contract to rehabilitate 22 access chambers that were deemed to be of an extremely poor condition in Cottesloe, WA. Before the actual refurbishments began, MCS employed its latest 3D scanning technology to assess the structural integrity of each access chamber and cross reference detailed measurements to determine the assets’ conditions.

An aerial shot of an access chamber, in poor condition and in need of rehabilitation.

These reports provided critical information for the method of rehabilitation MCS would use. The chambers were predicted to be challenging due to their high flows, silt/debris content, already fragile overall structure, advanced age and proximity to Cottesloe’s popular beach front.

After careful deliberation, it was decided to carefully jet-wash and e-duct approximately 5 m either side of each chamber to reduce the otherwise high cost to clean and e-duct kilometres of pipeline. This jet-washing/e-ducting process was also able to assist in reducing the amount of silt and debris in each chamber.

Additionally, the jet-washing and e-ducting significantly lowered the flows along with the isolations provided by Water Corporation to a workable level. This decision, as well as having the capacity to work with the prefabricated channels, allowed MCS to specifically adapt and design a solution to allow for the successful and safe installation of channel and benching with the remaining refurbishment works to be completed prior to the allocated project schedule.

The specific scope of works for this project comprised the design and development of structural rehabilitation for the current asset structure using approved remedial methods, including surface preparation for rehabilitation, channel and bench fabrications and the installation of the PVC lining system.

This also included the supply and installation of all required lining materials, supply and installation of PVC lined lids, reinstatement of property to previous conditions, spark testing completed to Water Corporation standards and the provision of quality assurance documentation.

Track record of success

When faced with a relining project, MCS uses a minimum 10 mm rigid PVC sheeting, with the chamber walls prefabricated into sleeves that can be lowered into place directly onto the asset. MCS also prefabricates the PVC channel and benching components, which are then plastic welded into place in the chamber.

After installation, the preformed sleeves, channels and benching are secured to the original asset using a minimum 40 mm of high strength grout. MCS relines the access chambers from top to bottom including pipe connections, channel and benching resulting in a 100 per cent gas tight structural PVC lining. This ensures complete protection of the asset from concrete deterioration.

The final result of the rehabilitated access chamber.

Although MCS guarantees a period of 50 years for the plastic lining of utilities access chambers and sewer pumps, PVC linings should last significantly more than 100 years, provided no physical damage or prolonged exposure to UV occurs.

Continued excellence

MCS has developed its relining methodologies to ensure it maintains a safe working environment while completing tasks in the most efficient manner possible. The company aims to spend as little time in the chamber as possible, equating to less time spent onsite and minimising extra costs that can accompany issues like traffic management.

Although based in WA, MCS has, and continues to, offer and complete its services around Australia. Along with access chamber refurbishments, these services include sewer pump station refurbishments, plastic fabrication, onsite fabrication, 3D laser scans, pressure jetting and CCTV inspections.

This article was featured in the September 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the McRobert Contracting Services website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

A wide range of relining successes

With the company’s longstanding philosophy “keep it running”, Rangedale offers the expertise, capability, resources and scale to take on projects large and small – evident in its recent relining successes throughout the state.

The trenchless technology expert has added new systems to its existing range of rehabilitation products and increased its relining capabilities, which now include ultraviolet (UV) lining, inversion, fibreglass patching and Smart Lock technologies.

Rangedale has exemplified its capabilities on a recent major infrastructure project utilising the use of high-definition CCTV, high-pressure water jetting, patching and UV lining over a two-month period to rehabilitate the damaged storm water assets.

Due to the heavy-traffic location, Rangedale was required to create a works methodology to offer a solution that avoided disruptive excavation work. First, Rangedale used its CCTV cameras to ascertain the asset’s condition and completed drain cleaning requirements to mitigate any sharp or other potential hazards that could damage the liner during installation.

By using its new state of the art relining system, Rangedale used UV light during the installation process to reduce curing time, increasing productivity and allowing a cost-effective trenchless rehabilitation solution with minimal impact to key stakeholders and the community.

On another recent project, Rangedale continued to demonstrate its relining capabilities by completing a 100 linear metre UV reline on a DN 225 live sewer. Rangedale said concrete slurry from adjacent construction works infiltrated the sewer network then cured, causing a significant blockage issue.

The use of specialised robotics were then implemented by Rangedale for a duration of approximately two weeks to remove the concrete with cutting and grinding tooling.

Upon completion of the removal, Rangedale installed the liner to rehabilitate the damaged sewer.

The UV system consists of a flexible tube made of glass fibre that is impregnated with a reaction resin composition and then pulled into place in drains and expanded using air pressure before the curing process is completed. The finished product is a statically stable, seamless, flexible pipe.

Turnkey solutions

Rangedale offers complete in-house, innovative turnkey solutions, providing the best rehabilitation technologies and methodologies while ensuring the asset owner and end user receive great value.

For these listed projects, Rangedale installed approximately 50 Smart Locks that were manufactured locally and specifically for the task, including sizes of DN 825, DN 1050, DN 1800 and DN 2250, demonstrating the company’s full service approach to its projects.

Rangedale’s relining methodologies can be employed for all pipe and sewer rehabilitation and are applicable to drainage materials such as concrete, steel, vitrified clay, fibre cement, glass reinforced plastic, un-plasticised polyvinyl chloride, high-density polyethylene and cast iron.

By using its new UV lining system in collaboration with existing rehabilitation solutions, Rangedale can reduce curing times and provide a cost-effective rehabilitation solution through an environmentally friendly process.

This article was featured in the September 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Rangedale website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Aussie Trenchless moves FNQ project forward

As trenchless technology continues to make its mark as the preferred installation method for underground infrastructure, Aussie Trenchless remains at the forefront of the industry with innovative new products and technology.

Growing in popularity

The company’s flagship product is a close fitting structural spiral ribbed PVC trenchless pipe lining system titled the SRP EXP. Used for circular sewer and storm gravity mains, the method continues to grow in popularity and will now be used on the recently-awarded FNQ project.

When the SRP EXP is installed, asset operators will extend the service life of a system by more than 50 years. Although designed to fit standard size access chambers, the product is also ideal for tight spaces or those with limited access.

Since the installation process is its unaffected by running infiltration and does not require bypass pumping, SRP EXP is well suited to water applications, particularly as it also enhances the hydraulic characteristics of the rehabilitated asset.

Aussie Trenchless Director Chris Meredith says he has seen significant growth in the implementation of this trenchless solution both around the world and here in Australia, where it continues to be implemented in relining projects, including in its repeat customer Relining Solutions’ upcoming contract.

Major improvements were already evident in the middle of the Ravenshoe Project.

Customers keep coming back

Relining Solutions is not the company’s only repeat customer, Mr Meredith says, with an international customer based in Taiwan ordering more supplies to be delivered in September this year.

“In 2019, the customer purchased 50,000 linear metres and have since been installing that,” says Mr Meredith.

“They have now placed another order of 60,000 linear metres, which are being manufactured as we speak.”

Mr Meredith says the customer is an active player in the Taiwan sewer industry has been for a substantial amount of time, often using Aussie Trenchless supplies for its projects.

Mr Meredith adds that this is an example of how customers are taking advantage of the product, with the company also receiving lots of market feedback indicating it is one of the most financially viable and efficient systems available.

“Like all efficient trenchless methods, the spiral lining system helps ensure the project’s aboveground footprint is minimised as much as possible, which includes the land and environment itself, as well as the day-to-day lives of the public in surrounding areas,” says Mr Meredith.

A successful range

While the SRP EXP is at the forefront of Aussie Trenchless’ market offerings, the company’s Hot Sleeve Jacket is also popular due to its prompt resin curing times.

The Hot Sleeve is a tight-fitting heating jacket that is secured over a patch inflatable packer to reduce ambient cure period without any life reduction, saving operators up to 60 per cent in crew times.

The Ravenshoe Project beginning to improve after showing severe signs of deterioration.

Aussie Trenchless also offers the market a man entry lining system using transparent polypropylene lining panels for the rehabilitation of gravity sewer mains, namely its Pipe Segment Technology (PST). PST is easy and fast to implement with lining panels made of polypropylene material providing a smooth surface and excellent hydraulic performance characteristics.

This article was featured in the September 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Aussie Trenchless website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Virus can’t stop Interflow

During COVID-19, some infrastructure projects – like the critical wastewater project at Moa Point in Wellington – were deemed so critical to the health and wellbeing of the local community that they could not wait. To complete the difficult project during the pandemic and against all odds, Interflow had to challenge the status quo and push the limits of traditional water infrastructure methods.

NZ’s largest water infrastructure project

Beneath the coastal streets of Moa Point lies one of Wellington’s most critical sewer pipelines that manages wastewater for more than 200,000 residents. Recently, the pipeline was experiencing severe corrosion and was at risk of collapse, with the deterioration having reached the steel reinforcement of the pipeline – even penetrating the pipeline in places – posing a threat to the network, community and environment.

As an operator, Wellington Water understood the health and longevity of the sewer was a top priority and it publicly tendered the rehabilitation works. The tender sought an innovative yet cost-effective solution that would prioritise the needs of the community and minimise disruption to residents.

Being renowned in the industry for its appetite for innovation and commitment to solving its customers’ problems, Interflow was awarded the project. As the Moa Point wastewater rehabilitation would become the largest dimeter sewer pipeline renewal project to take place on New Zealand’s shores, Interflow says it tackled the challenge head on.


Due to COVID-19 restrictions, all site personnel were required to wear PPE equipment such as face masks.

COVID-19 challenges local project

Although the contract was awarded in late February, the 260 m reline of Wellington’s main sewer could not commence until April, causing crews to quickly learn the importance of adaptability and agility with the coronavirus emergency in NZ.

While the country’s lockdown regulations have been some of the strictest in the world, Interflow was classified as an essential service meaning the wastewater network’s critical repairs could continue, albeit with a few workflow adjustments.

Interflow Project Engineer Saadia Ali says there were many challenges the crew overcame to ensure the project was kept on schedule.

“The expectation that our colleagues from Australia would fly out and provide support was no longer a reality and required us to employ some unconventional approaches,” she says.

Despite expecting assistance from Australian counterparts and training from experienced Rotaloc staff, once travel restrictions were put in place by both the Australian and NZ governments, Interflow’s crews were required to turn to virtual channels to bridge the training gap.

Tenacity and determination yields results

Ms Ali says using digital technologies enabled the crew to develop the necessary skills needed to deliver these works.

“The solution was a remote Rotaloc training session held via video link to bring our team up to speed on the patented technology’s application and operations,” says Ms Ali.

The Rotaloc installation of a new liner into the pipe provides a durable, long-term solution to protect Wellington’s wastewater interceptor from corrosion and support the needs of the community for at least another 50 years.

“Our team worked extremely hard to overcome the challenges faced due to the pandemic,” says Ms Ali.

“We were working away from our families in an ‘Interflow bubble’ and had to rethink the way we collaborated with our customers, contractors and the broader community.”

Commitment to the community

Through collaboration and forward thinking, Wellington Water and Interflow rebuilt the city’s critical wastewater link before any significant harmful effects impacted the city. With works now completed, Wellington’s residents can relax knowing the wastewater network and services to homes, local businesses and the community are back to being fully operational.

Interflow says its flexibility during the pandemic allowed the company to tackle the challenges of COVID-19 head on and deliver the project successfully.

“The virtual training and collaboration that took place during this project demonstrate the company’s innovative approach to problem solving,” says Interflow.

“Furthermore, the solution is now incorporated into the NZ team’s service offering moving forward, enhancing their ability to respond to challenges of this type in the future.”

This article was featured in the September 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Interflow website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

ASTT kick starts webinar series

Due to COVID-19 social distancing requirements, the ASTT has begun holding webinars in place of its in-person trenchless forums with the series commencing on 23 July 2020.

Yesterday, Interflow Emerging Markets Manager Will Zillmann delivered a presentation on prominent water main renewable challenges faced throughout the industry.

Recently, Mr Zillmann said, the maximum time period a main can be left out of service is becoming shorter as technological capabilities increase, with planned interruptions setting the benchmark.

However, the significant challenge remains of questioning whether to remove, abandon or reuse the pipes due to the difficult areas they are situated.

“The largest cohort of failing assets are in urban locations typified by congested service corridors, paved roads and footpaths and high number of affected customers,” he said.

Along with these failing assets, Mr Zillmann said there has been a “historical underestimate in asset renewals which has led to budget shortfalls,” and the focus for budget-spend is predominately on visible projects such as road restorations.

“Pipelines are still seen as the poor cousin,” said Mr Zillmann.

“However, individuals in urban utilities expect an exponential increase in breaks over the next five years,” correlating with an increase in renewals.

Due to this increase, the Water Services Association of Australia (WSAA) has commissioned the CRC-P project for smart linings and coatings where trials and testing is being undertaken to create standards and codes of practice that increase confidence in the adoption of trenchless technology.

“WSAA said this is not so much of a solution, but a journey to a range of solutions.”

Included in this range of solutions is Interflow’s new product RediFlow™, a technology bundle of the company’s pre-existing Titeflow® H112 and Infrastop®.

The ‘Redi’ title, Mr Zillman explained, stands for reliable, environmentally friendly, durable and innovative.

Interflow aims to give its clients long-term performance with this single, integrated product while simultaneously reducing a project’s carbon footprint.

The next ASTT webinar will take place on 20 August.

For more information visit the ASTT website.  

If you have news you would like featured in Trenchless Australasia Assistant Editor Journalist Sophie Venz at svenz@gs-press.com.au

Relining SIG gets reformed

In 2016, the Linings SIG was formed to develop standard specifications that all asset owners in Australia and New Zealand could use with confidence.

After limited success at the time, the ASTT is now proposing to resurrect the group that at this stage will be chaired by New Zealand Councillor Blair Telfer.

The group intends to develop training courses and material for pipe lining, similar to the North American Society for Trenchless Technology (NASTT) courses but instead with an Australasian perspective.

ASTT Secretary Jeff Pace said the SIG is always open to other suggestions and ideas from individuals and companies as to what the industry needs and wants.

To register your interest for the SIG, please contact jeffpace@astt.com.au

For more information visit the ASTT website.

If you have news you would like featured in Trenchless Australasia Assistant Editor Journalist Sophie Venz at svenz@gs-press.com.au

PMA continues vital stormwater works

In 2018, PMA was engaged by Brisbane City Council to remove 200,000 litres of waste from a stormwater drain near Gailey Road after residents had complained of an odour.

Last month, the crew returned to the site in Toowong to remove an addition 6,000 litres of waste to keep the stormwater system running efficiently and reduce the suburb’s risk of flooding.

PMA said for more than 10 years it has been helping cities, councils and private organisations identify, solve and maintain stormwater drain networks.

With its team of more than 60 high skilled experts, PMA said its combined experience navigating and anticipating the problems faced in the service and maintenance of utilities means it is always working to keep its clients one step ahead of the issue.

PMA said its fleet of more than 30 purpose-built, highly versatile drain cleaning units are designed for cleaning and clearing all types of pipes, culverts and GPT devices.

“We provide a broad range of services and utilise innovation and modern equipment to deliver time-critical results to exacting standards,” the company said.

For more information visit the PMA website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Sewer condition assessments
Issued by: Byron Shire Council
Closing date: 17 July 2020
Location: New South Wales 
Description: Byron Shire Council wishes to appoint a contractor to supply goods and/or services. The goods and/or services involved include the CCTV assessment and smoke testing subject to direction by the principal of the exiting gravity sewer network and are set out in detail in the RFT. The contract term is one year subject to satisfactory performance by the successful tenderer, which will be determined by Byron Shire Council.

Request for information – pump systems
Issued by: Kingston City Council
Closing date:
23 July 2020
Location:
Victoria
Description:
Kingston City Council is seeking the latest information from the stormwater industry on suitable pumps and pumping station technology for consideration as part of council’s capital works program to construct stormwater improvements within flood prone areas.

Valla Urban Growth Area, Stage 1 – water and sewer design
Issued by: Public Works Advisory
Closing date:
28 July 2020
Location:
New South Wales
Description:
Design investigation, coordination and development for potable water storage, treatment and reticulation. Design investigation, coordination and development for sewage collection, reticulation and transfer. 

Creekside Estate Stage 2 Bourke Road, Nathalia – 20030/CW
Issued by:
Moira Shire Council
Closing date:
29 July 2020
Location:
Victoria
Description: The project offered for tender on this occasion is the civil works, including sewerage and water reticulation associated with Creekside Estate – Stage 2, subdivision works. The scope of work consists of the construction of the internal subdivision associated with Creekside Estate, Nathalia as shown the drawings. The works of this contract comprise but are not limited to drainage works including pit construction and telecommunication pit and pipe construction.

RAAF Richmond Water Infrastructure, NSW
Issued by:
Department of Defence – DSRG
Closing date:
30 July 2020
Location:
New South Wales
Description:
This project involves works on the sewer treatment plant, hydrants, pothole sewer rising main and pumping station. This includes membrane lining replacement, upgrade to weirs, replacing several pumps and general refurbishment works for tanks. 

Design and construction of Quinns main sewer extension and associated works
Issued by:
Water Corporation
Closing date:
12 August 2020
Location:
Western Australia
Description
: Water Corporation is inviting organisations with suitable experience, capability and capacity to submit a bid for the design and construction of approximately 1,930 m of new main sewer (MS) and associated works from the high point Hall Road to the existing Quinns MS at access Chamber (AC) N1113 near the intersection of Connolly Drive and Walyunga Boulevard in Clarkson.

Aubinville STP: EIC&A – Design and Construct
Issued by:
Fraser Coast Regional Council
Closing date:
13 August 2020
Location:
Queensland
Description
: Tenders are invited from suitably qualified and experienced tenderers to undertake the design and construction of electrical, instrumentation, control and automation (EIC&A) works at the Aubinville Sewage Treatment Plant (STP) in Maryborough, Queensland.

Each fortnightly edition of the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

SA Water to deliver major projects

The companies will work collaboratively with SA Water to deliver its $1.6 billion capital program over the next four years on projects to improve water and sewerage services across the state.

On 29 June, major framework agreements – each valued at up to $500 million – were signed between SA water and Fulton Hogan Utilities, a joint venture (JV) of John Holland and Guidera O’Connor and a JV comprising McConnell Dowell and Diona.

The agreements will see packages of work awarded progressively if rigorous performance standards are maintained.

SA Water Chief Executive David Ryan said the major partners will begin delivering projects from the first week of July.

“Each of our new major framework delivery partners brings skills and experience they will share with our people as they co-manage programs of works, to ensure our customers benefit from improved service reliability and quality,” said Mr Ryan.

“Combining leading construction sector expertise with the design, project management and water industry expertise of SA Water and our front end engineering and client organisation partner KBR and Aurecon who have also signed on for the next four years, will ensure we continue to make prudent and well-rounded decisions.

“Together, we will deliver a diverse portfolio of projects over the next four years which includes dam upgrades, water tank refurbishments, water main replacements, sewerage network upgrades and water treatment process changes, with work spread across both the metropolitan area and regions.

“Our partners are ready to begin delivering our new capital program at the start of next month, which will push work into the market when it is needed most.”

Approximately six minor framework agreements will also be awarded in the coming months to cover smaller work programs, with up to $44 million of work to be allocated to the successful tenderers over the four year period.

The minor framework agreements’ activities will include regional water main replacements, rehabilitation of sewerage assets and physical or electronic security such as fencing and CCTV.

For more information visit the SA Water website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

generic water pipe image

Central Coast rehabs sewer network

Sewer mains in 45 Central Coast suburbs have been rehabilitated in the past financial year to improve the performance and reliability of the networking by extending the infrastructure’s life by up to 50 years.

Central Coast Council Director Water and Sewer Jamie Loader said the maintenance program, using “innovative technologies”, has improved reliability, lowered the risk of environmental disruption and ensured the region is well positioned to cater for future population growth.

“We have an ongoing maintenance program for our extensive 2,649 km sewer network and our focus is on rehabilitating damaged sewer pipelines or replacing end-of-design-life equipment,” said Mr Loader.

“We’re using an innovative technique to rehabilitate damaged sewer pipelines with structural re-lining, rather than replacing the infrastructure, and we start by clearing the pipe and assessing the conditions of sewer lines via CCTV camera.

“If required, we insert a liner that reinforces the existing pipe structure, sealing any leaks and significantly reduces the risk of future damage – particularly from tree roots, the number one cause of sewer blocks and overflows.

“This technique also eliminates the need to excavate in most cases, which minimises disruption to the community and reduces repair costs.”

This investment in critical infrastructure will now ease the pressure on the network for the growing population and enhance the liveability for residents, Mayor Lisa Matthews said.

The Central Coast Council has actively monitored and tested the effectiveness of its sewer mains network across the region to indicate areas due for maintenance, which it will continue to do following this rehabilitation program.

For more information visit the Central Coast Council website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

PNCC Wastewater Pipe Relining and Rehabilitation 2020–22
Issued by:
Palmerston North City Council
Closing date:
7 July 2020
Location:
New Zealand
Description
: PNCC are seeking tenders from suitable, qualified and experienced contractors for the relining and rehabilitation of the PNCC wastewater network, and in some cases including laterals on private property. This contract covers larger mains, ranging from 750 mm diameter down to 300 mm diameter. As well as relining of the mains, works also include pre and post CCTV inspections, epoxy coating of associated manholes and relining of associated laterals.

Construction of new sewage pump station R19A and renewal of sewage pump station SH1
Issued by: Cairns Regional Council
Closing date: 7 July 2020
Location: Queensland
Description: Cairns Regional Council is inviting submissions from suitably qualified and experienced contractors for the construction of new sewage pump station R19A at Portsmith and the renewal works at sewage pump station SH1 at Smithfield.

Mount Grey Road to Smarts Road Watermain
Issued by: Hurunui District Council
Closing date: 9 July 2020
Location: New Zealand
Description: The proposed project consists of approximately 3,000 m of DN 180 PE100 PN12, approximately 3,000 m of DN 63 PE80 PN12, approximately 385 m of DN 63 PE80 PN16, approximately 975 m of DN 32 PE80 PN12 and approximately 1,719 m of DN 25 PE80 PN12. There are several road crossings that will be installed by trenchless methods, the project also consists of SV valves, air-valves and connections. The contractor is to supply and install all the valves, fittings, small bore pipe and all pipe welding. Hurunui District Council will supply the DN 180 PE100 (15 m sticks) PN12.

Citywide trenchless technology rehabilitation works
Issued by: Newcastle City Council
Closing date: 14 July 2020
Location: New South Wales
Description: The provision of asset rehabilitation works to existing underground stormwater conduits using trenchless lining technology at various locations across the Newcastle Local Government Area.

Warren – Blackwood Regional Water Supply Scheme – Greenbushes to Kirup Link
Issued by:
Barwon Water
Closing Date:
23 July 2020
Location:
Western Australia
Description
: Water Corporation is inviting organisations with suitable experience, capability and capacity to submit a bid for the manufacture, supply, construction, installation, testing and commissioning of approximately 17 km DN 150 MPVC pipeline, tank site reconfigurations and new infrastructure to suit the new water supply scheme, road access, electrical and controls upgrades from Greenbushes to Kirup.

Each fortnightly edition of the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Primus Line repairs seaport pipeline

The existing HDPE potable water pipeline, which runs along and under one of the main roads into the port, required rehabilitation.

Due to its location, a dig-and-replace option was not viable as the port facility operates 24/7 and a part of the pipeline passes through areas of cultural heritage sensitivity where digging is not permitted.

For the rehabilitation, 1,500 m of Primus Liner DN 150 was installed with the lining in three sections, taking less than four days to complete.

The Primus Liner was installed in only four days.

Consisting of a flexible Kevlar® reinforced liner and specifically developed end fittings, Primus Liner is a flexible sliplining solution for the trenchless rehabilitation of pressure pipes.

Cape Lambert is a seaport exporting iron ore with an annual capacity to handle 80 million t.

For more information visit the Primus Line website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

kwik-ZIP enables watermain sliplining

kwik-ZIP’s HDX-90 spacers were installed to assist the 813 mm cement lined steel water main into a steel encasing pipe, with the spacer’s unique load sharing design maximising the load bearing capacity of each runner.

The simple and efficient installation process does not require any special tools, allowing Pezzimenti Trenchless to promptly complete the project.

Pezzimenti Trenchless Managing Director Joe Pezzimenti said the company has been using kwik-ZIP spacers for sliplining installations for many years.

“Whether the carrier pipe is plastic, GRP or heavy weight steel kwik-ZIP has a spacer to do the job,” he said.

“Their technical support and excellent customer service make using kwik-ZIP spacers an easy decision.”

With a large range of spacers, kwik-ZIP can cater for a variety of inner diameter and outer diameter combinations, as well as providing flexibility to deal with project alterations.

For more information visit the kwik-ZIP website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Aqua Assets has fluid industry intelligence

Originating in Sydney, New South Wales, Aqua Assets was established by industry experts with decades of experience across the full spectrum of commercial and industrial projects. Initial success allowed the company to open a second depot in Newcastle, NSW after just a few short years, and today its steady workforce, adequate financial resources and quality equipment enables Aqua Assets to present itself as an extremely competitive tenderer.

The company employs more than 60 onsite personnel, all of whom are trained in all facets of the organisation and pride themselves on the finished works. Aqua Asset staff have an ability to complete the works in accordance with client requirements and timeframe, while ensuring all workplace health, safety and environmental regulations are adhered to.

The company has a fleet of units that are used between both depots, which include mobile water blasters, vacuum loading units, dual purpose jet/vacuum trucks and a range of CCTV units capable of surveying pipelines from 50 mm to 2 m in diameter.

Aqua Assets provides a pipe repair and lining service as a post inspection service repairing structural breaches that have been identified by its CCTV service, and the company also offers non-destructive digging services to limit excavation work.

Further proving its versatility within the industry, Aqua Assets can provide services relating to cured-in-place pipe (CIPP) lining, pipe bursting, directional drilling, manhole rehabilitation and more –all while maintaining an intense focus on health and safety of staff and the surrounding public.

Asset Training

Asset Training is a subsidiary of Aqua Assets and has been a registered training organisation (RTO) since 2006. Specialising in wastewater management and industrial maintenance service training throughout Australia, Asset Training is based out of its Newcastle training centre, but its trainers will travel all throughout Australia.

The training centre is fully equipped to provide training in white card, work safely at heights, high pressure water jetting (ultra-high), vacuum loading, drain cleaning, first aid, CPR, confined space and much more.

Asset Training recently added Australia’s first online high-pressure water jetting refresher course, which provides an overall refresher and verification of competency for a qualified high-pressure water jetting operator. With the inclusion of new courses to its scope, the company is focusing on the industry with a goal of becoming Australia’s primary RTO in the areas of wastewater management, industrial maintenance and cleaning.

Asset Training staff are all experienced and passionate about their work, bringing wealth of industry knowledge and enthusiasm to every level of training they provide. Both this competency and passion have not gone unnoticed, with the company winning the Hunter Safety Award for ‘Best WHS Training Course’ for its high pressure water jetting training.

Asset Training has also developed bridging courses for the holders of the high pressure water jetting skill sets to acquire drain cleaning and vacuum loading skill sets in one day.

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Aqua Assets website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Allpipe Technologies provides the pipeline solution

As a leading CCTV pipe inspection and pipeline rehabilitation company in Western Australia, Allpipe Technologies is no stranger to conducting underground asset audits by using the latest technology and methods to deliver tangible value for municipalities, authorities and private companies.

For such organisations, awareness and maintenance of underground assets has seen increased importance as it is not only vital to maintain an optimum level of service, but also to reduce the risk of disruption as much as possible.

With the support of SECA – a leading Australian supplier of equipment for the cleaning, inspection and rehabilitation of sewers and drains – Allpipe Technologies has been promoting and installing more than 1,000 QUICKLOCK systems throughout WA in the last year.

Allpipe Technologies utilises the latest technology and methods to deliver tangible value for its customers.

A cost-effective repair

Allpipe Technologies recently assisted with inspection services for the City of Subiaco, a suburb located in Perth. The suburb manages more than 100 km of pipeline, representing significant value for both the city and the thousands of residents and businesses within its boundaries.

On 10 March 2020, Allpipe Technologies deployed its CCTV inspection team to survey a storm water pipe located on a main road in one of the busiest intersections in Perth – which presented a void in the pipeline under the road reserve.

Allpipe Technologies Business Development Manager Morgan Caffrey says the inspection showed a visible void that, if left unnoticed, would cause the potential for a sink hole and environmental impact or disaster would be imminent.

“Subiaco City Council engineers investigated various rehabilitation technologies presented by Allpipe Technologies and decided that the QUICKLOCK was the most suitable to repair the defect in the most cost-effective way,” says Mr Caffrey.

“The QUICKLOCK is fast to install and has Australian approvals including a life expectancy in excess of 50 years.”

The following morning, Allpipe Technologies had already installed the DN300 QUICKLOCK with minimal disruption and traffic flowing as normal.

By using QUICKLOCK, Allpipe Technologies was able to avoid an environmental disaster in Western Australia.

A dedicated pipeline rehabilitation team

The Allpipe Technologies team is trained by SECA to install the QUICKLOCK, ensuring a quality service and product every time.

Allpipe Technologies is ISO accredited in quality safety and environment, a tier one contractor for the Water Corporation and a member of the Civil Contractors Federation.

Dedicated to safety and employee development, all crews have experience working at heights, confined space entry, gas test atmospheres, first aid and traffic management to ensure project delivery that clients can always trust.

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Allpipe Technologies website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Regional reline project continues its success

The major sewer relining maintenance project is taking place underneath main roads in the southeast Queensland region, with most pipes being relined in the current program 50 to 70 years old with “at risk” conditions.

Currently in the second year of its two-year contract, the tender was released in 2018 through LG Tender Box with the Wide Bay Burnett Regional Organisation of Councils (WBBROC), which has six member councils.

Five of the six member councils participated in the second round of the relining program, enabling the bulk power of a larger organisation and reducing the financial impact on the community. Fraser Coast Regional Council managed the contract on behalf of all WBBROC members.

Trenchless wins for customer satisfaction

Bundaberg Regional Council Network Program Coordinator Water Services Branch Geoff Tansley says that since trenchless methods have a considerably lower impact on residents, property owners and other services, a much higher customer satisfaction is achieved compared to open excavation.

“Providing the buried asset has not deteriorated or collapsed to a point where a liner cannot be pulled through or it would burst due to sharp fragments and edges with the host pipe, relining existing pipes is more financially viable than excavation,” says Mr Tansley.

“As there is no excavation normally required, the process removes risks involved with working in excavations.”

Mr Tansley says any excavation of the region’s sewers – some being more than 6 m in depth – would be onerous, expensive and risky in addition to the significant reinstate effort that would be required. However, trenchless construction can mitigate these risks and result in overall lower operational costs.

Ultimately, Mr Tansley says the Bundaberg Regional Council chose a trenchless construction method due to customer relations and satisfaction, financial stability achieved through reduced delivery cost and on-going operational costs as well as a length design life.

More trenchless considerations

Although relining was chosen as the primary solution, the council also considered implementing the pipe bursting technique as a rehabilitation option for sewer mains that have partially collapsed and are preventing insertion of liners.

However, Mr Tansley says this process would end up requiring open excavation and modification to reinstate the connection, therefore pipe bursting was discounted as an option due to these requirements and additional costs.

“In these cases, the areas that had collapsed and were preventing the liner installation were excavated and patched sufficiently enough to enable renewal with either GRP or PVC liners,” says Mr Tansley.

Bundaberg Regional council has also used pipe jacking and line boring in previous works to install new sewers or upgrade existing mains, particularly under existing roads; however, this method has seen limited results in the past due to an inability to maintain gradient and pipes failing due to tension stress.

Reaping the rewards with minimal disruption

By implementing relining as the trenchless solution, the project can ensure the continuity of essential services to the Bundaberg region without significant impact on the asset’s delivery as it is being renewed.

If open excavation had been chosen, interruption to services such as sewer and road transport would expose workers to risks from buried services such as electrical cabling and gas mains while also creating a significant impact and disturbance on the environment.

“Sewer renewal through relining is financially sustainable, as it is often the most cost and time effective renewal method, especially for deep pipe and those with access constrains,” says Mr Tansley.

Utilising state-wide contractors

The large diameter sewers – those 375 mm in diameter and larger – are being relined using an iMPREG cured-in-place pipe (CIPP) system by AARO Group, a Perth based company with a depot located in Currumbin Waters.

The iMPREG liner system, which has a design life of 100 years, is an ultraviolet light cured glass fibre reinforced plastic (GRP) liner that is cured after being pulled in place and inflated using compressed air.

Mr Tansley says AARO Group has a crew of eight onsite undertaking the jet cleaning, CCTV and installation work. In addition to the relining workers, AARO Group also sourced a local traffic control company who are providing an additional four-person team to safely manage traffic and pedestrian guidance.

The smaller sewer mains, up to and including 300 mm, are being renewed by Queensland based company Relining Solutions and using an AM-LINER II, which is a continuous length of polyvinyl chloride pipe and has a design life of 50 years.

Once on site and after achieving the required heat soak period and pressure test, the steam supply is transitioned to compressed air and the steam is slowly purged while maintaining pressure to allow the liner to cool in place and become a new PVC pipe.

When the liner has achieved the required heat soak period and pressure test, the steam supply is transitioned to compressed air and the steam is slowly purged while maintaining pressure allowing the liner to cool in place becoming a new PVC pipe.

The AARO team uses new trenchless systems and technology to complete the council’s rehabilitation project.

Future plans

The current program was originally planned to be completed in May 2020, although it is now slightly behind its initial timeline due to issues with transportation of materials and equipment caused by COVID-19 health and safety measures.

Despite these delays, the Bundaberg Regional Council says new plans are already in place for future work.

“The next round of the WBBROC sewer relining program is expected to be a three-year tender and should be advertised later this year,” says Mr Tansley.

Mr Tansley says the council’s water services department has also established an associated program of proactive cleaning, survey and condition assessing for the region’s entire sewerage system to identify and quantify any defects in the network.

“The information gained from this survey will be used to identify, cost and establish a rolling program of relining work for the future.”

Mr Tansley says the council will continue to implement trenchless renewal methods.

“As trenchless renewal methods are constantly being developed and improved and we will continue to review the emerging technologies and modify existing one to suit our application.”

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Bundaberg Regional Council website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Water under the bridge in Vietnam

The Van Don district in the north-east of Vietnam belongs to the province Quang Ninh, located approximately 150 km east of Hanoi. The province is home to Hạ Long Bay, a World Heritage site with 1,969 islands.

In this sensitive landscape, network operator Quang Ninh Water Company (QUAWACO) operates a DN 300 steel water main located underneath and inside a bridge construction to supply Van Don Island with drinking water. The three bridges have individual lengths of 410 m, 170 m and 270 m.

The steel pipes were originally installed in 2002 with the construction of the bridges, while corrosion and water quality security induced the water network operator to undertake preventative maintenance.

The goal of the renovation works was to elongate the life span of the pipes and secure the water supply. Due to its difficult access and a desire to quickly upgrade the existing pipe, the Primus Line® system was the preferred method.

As the first deployment of the Primus Line system in Vietnam, the liner’s use was the idea of QUAWACO’s Chairman Nguyen Van Thanh, who was first introduced to the trenchless rehabilitation technology at Vietwater 2018 where he met Primus Line’s Australian representative.

At the time, the Australian and Vietnam Water Association had begun a twinning program and Vietwater was a central platform for knowledge sharing. In order to install the Primus Line system, only a small investment in the necessary tools was required.

Additionally, a Primus Line instructor performed a local training for the contractor in two working days and, during the same week, the contractor renovated the first bridge under this instructor’s supervision.

QUAWACO proactively manage the water supply in its region and has reduced the non-revenue water rate below 18 per cent over the past couple of years.

The Primus Liner was delivered on timber transport reels directly to the site.

The process

To begin, the host pipe was CCTV inspected to assess its condition,, and this inspection revealed several areas where incorrect welding seams were protruding into the cross-section of the pipe. The individual pipe shots were butt-welded and, due to the complex accessibility of the steel pipe underneath the bridges and inside a box girder, the contractor’s team removed the welding seams manually.

The contractor performed mechanical cleaning of the host pipe using scrappers and rubber pigs as the 840 m of liner was delivered pre-folded into U-shape on timber transport reels directly to the site.

The contractor mounted a pulling wire to the start of the liner and connected it to a rotation joint and subsequently to the cable of a pulling winch, allowing the liner installation to take less than one hour for each section.

Afterwards, it was re-rounded with compressed air before the contractor’s installation team finally mounted the end fittings equipped with DIN flanges PN 10. The renovated section was successfully pressure-tested using potable water with 9 bar and the pipe was reintegrated into the network using HDPE pipe shots.

The whole renovation was completed after three weeks and extended the asset’s life by 50 years, therefore securing both the water quality and supply.

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Primus Line website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

Aussie Trenchless leaves no project in the trenches

Aussie Trenchless’ flagship – and most popular – product is a close fitting structural spiral ribbed PVC trenchless pipe lining system known as the SRP EXP. Used for circular sewer and storm water gravity mains, the method has seen an increased popularity both in Australasia and abroad thanks to its versatility and ease of use.

By installing SRP EXP, asset operators can extend the service life of sewer and stormwater systems by more than 50 years. The product is designed to fit standard size access chambers but is also ideal for tight spaces and locations with bad access.

As the installation process is unaffected by running infiltration and does not need bypass pumping, it is well suited to water applications, particularly as it also enhances the hydraulic characteristics of the rehabilitated asset. The product is available for asset profiles from DN 150 to DN 1200, with such range allowing it to become a standout product to the market.

Aussie Trenchless Director Chris Meredith says he has seen significant growth in the implementation of this trenchless solution all around the world and particularly here in Australia, where it has been implemented in several locations.

Using Aussie Trenchless’s spiral lining system helped prevent collapse of the existing pipe walls.

A standout product in action

Recently, the spiral lining system was used to rehabilitate corrugated steel stormwater pipes for the Tablelands Regional Council in Queensland at the Ravenshoe Project.

As the pipes – which were each 750 mm in diameter and 33 m long – were in what was described as a ‘horrific’ condition, the contractor decided the only feasible application was Aussie Trenchless’ spiral lining.

With other methodologies, the risk of collapsing the walls could possibly result in a need to dig up the road. As it was the only road providing residents access to their properties, this would have caused major concern and delay with the digging requiring in at least one week of work.

By implementing the Aussie Trenchless solution, the contractors completed a size for size rehabilitation that had minimal risk of collapsing the existing pipe walls. At the conclusion of the project, the contracted engineer was extremely pleased with the final result and signed it off with no hesitation.

Mr Meredith says this project is just one example of how customers are starting to take advantage of the product, with the company receiving lots of market feedback indicating it’s one of the most financially viable and efficient systems available.

“Like all efficient trenchless methods, the spiral lining system helps ensure the works’ aboveground footprint is minimised as much as possible, which includes the land and environment itself, as well as the day-to-day lives of the public in surrounding areas,” says Mr Meredith.

“Other systems need two separate winding machines to install a range of profile to suit pipes from DN 150 to DN 1200. SRP EXP has been designed with one winding machine that installs all sizes of expanding profile for pipes from DN 150 to DN 1200 meaning there is no need for multiple winding machines.”

More than a one-hit wonder

While the SRP EXE is at the forefront of Aussie Trenchless’ offerings to the market, the company’s Hot Sleeve Jacket is a product that remains popular among customers by inducing a speedy resign cure during patch and seal lining activities.

The Hot Sleeve is a tight-fitting heating jacket that is secured over a patch inflatable packer to reduce ambient cure period without reducing its life, with operators finding it saves up to 60 per cent in crew times.

Aussie Trenchless has also caught the industry’s attention with its Pipe Segment Technology (PST) – a man entry lining system using transparent polypropylene lining panels for the rehabilitation of gravity sewer mains.

Both easy to build and fast to implement, PST lining panels are made of polypropylene material which provides a smooth surface with excellent hydraulic performance characteristics.

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Aussie Trenchless website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Wollongong St – Drainage Easement Asset Renewal and Upgrade
Issued by:
Shell Harbour City Council
Closing date:
9 June 2020
Location:
New South Wales
Description:
Shellharbour City Council invites submissions from suitably qualified and experienced contractors for the construction of stormwater drainage upgrade and associated works at 15 Wollongong Street, Shellharbour.

District Wide 3 Water Connections
Issued by: Tararua District Council
Closing date:
10June 2020 
Location:
New Zealand
Description:
Tararua Alliance would be looking to have multiple approved contractors in this field to provide the community with options when looking to have three water service connections.

Stormwater Relining Project
Issued by:
Hinchinbrook Shire Council (HSC)
Closing date:
10 June 2020 
Location:
Queensland
Description:
HSC is currently seeking tenders from suitably qualified contractors to undertake stormwater relining in various locations as described in more detail in Part 5 Scope of Works. Council has allocated funding to this project however the funding is limited and will not include any overages or additional works. A final scope will be agreed to upon awarding of contract.

TCDC Contract C19/06 Bond Road and SH26 Watermain Renewal
Issued by:
Thames-Coromandel District Council
Closing date:
11 June 2020
Location:
New Zealand
Description: The contract works involves the replacement of existing and new watermains in Matatoki located south of Thames. The contract includes the supply all plant, labour, and materials required to install approximately 2,690 m of DN 180 PN10 PE100, plus all associated fittings, valves, road crossings, connections, testing and verification.

Elizabeth Street Foul Sewer Renewal
Issued by:
Invercargill City Council
Closing date:
12 June 2020
Location:
New Zealand
Description
: This contract is for the supply of all plant, labour and materials necessary for the renewal of 862 m of foul sewer mains and lateral connections on Elizabeth Street (Invercargill) between Bluff Highway (SH 1) and Elles Road. This includes all associated structures, fittings, fixtures and connections required to complete the works.

Provision of Drainage Maintenance Services
Issued by:
Yarra City Council
Closing date:
12 June 2020
Location:
Victoria
Description: The contractor will be responsible for the care and maintenance of all Council Drainage Assets included in the contract to ensure that they are operating at the required level of service, and carry out maintenance works on the stormwater system within the City of Yarra. Preventative maintenance includes: pipe cleaning, CCTV inspections and reporting and waste disposal.

Water and sewer network monitoring to support hydraulic model calibration

Issued by: Yarra Valley Water
Closing date: 22 June 2020
Location: Victoria
Description: In order to assess the performance of YVW’s assets, it is required to monitor the key hydraulic parameters associated with water and sewer networks. This project brief is to seek a suitably qualified contractor/contractors to provide monitoring services in YVW’s water and sewer networks.

Nagambie Sewer Pump Station Number 4 Conversion and Sewer Pipeline Rail Crossing
Issued by:
Goulburn Valley Water
Closing date:
23 June 2020
Location:
Victoria
Description: Scope of works include the design and construct of the Nagambie SPS04 conversion and sewer pipeline rail crossing; upgrade of sewage pump station 04 (SPS04) in Nash Street through the installation of larger capacity submersible pumps and conversion of the dry well to a wet well; and completion of V/Line site access application and construction of a new sewer pipe under the VicTrack rail reserve.

Each fortnightly edition of the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au