Veolia acquires Allpipe Technologies

Veolia acquires Allpipe Technologies

Veolia announced on 17 May 2022 its acquisition of Allpipe Technologies, a specialist Perth-based business. As an established provider of sewer network maintenance, Allpipe has over a decade’s worth of experience delivering trenchless solutions for councils across Perth.

The deal sees the expansion of the Veolia water network services, with activities to begin in Western Australia, and the subsequent strengthening of the company’s position as Australia’s leader in water solutions.

The strategic purchase will see the two businesses combine assets, furthering the possibility of new opportunities for sustainable water management activities.

Veolia’s chief operating officer for water, Daniel Spiller, says the purchase of Allpipe Technologies marks an exciting step for both company’s and will increase the scope of the services Veolia can offer the state.

“With our existing industrial services and waste activities, the expansion of our water business will complete our ability to drive a full complement of solutions for customers. Working as part of our network services business, the acquisition will bring new opportunities to drive innovation and whole-of-life network solutions.”

The acquisition will see Allpipe’s local assets transfer to Veolia along with all its current employees, including the former owners whose wealth of knowledge will be an asset to Veolia throughout the transition.

“There are strong synergies between our organisations and a shared commitment to building a successful relationship that benefits our customers,” said Spiller. “Veolia already operates similar businesses on the east coast so the opportunity to expand in Western Australia by combining with some local expertise was too good to miss.”

“I’m confident it’s the start of a long and successful engagement for Veolia’s water business in Western Australia,” he said.

Veolia’s water activities help Australian utility providers and businesses to p[reserve and secure water supply, through its services in waste and wastewater treatment, asset management, reuse recycling and network services.

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Stormwater Asset Upgrades at Jeep Road, Clunie Avenue and Kainui Catchments Stage 1

Issued by: Kapiti Coast District Council

Closing Date: 19/05/2022

Location: New Zealand

Description: Tenders are invited from interested suppliers, the contract covers the following work in Paraparaumu area of Kapiti District not limited to:

Installation of new stormwater pipes using open excavation technology

  • Installation of new stormwater pipes using directional drilling technology
  • Rehabilitation of existing pipes using structural lining technologies
  • Installation of new manholes, sumps, sump leads
  • Preparation and submission of as-builts as per Kapiti Coast District Council requirements.

Stage 2 NSW CO2 Storage Assessment Program – Provision of directional drilling, measurement while drilling and logging while drilling services

Issued by: Mining, Exploration & Geoscience (Regional NSW)

Closing Date: 30/05/2022

Location: New South Wales

Description: The Geological Survey of NSW is issuing this Request for Tender to procure directional drilling, measurement while drilling and logging while drilling services for exploration activities in Stage 2 of the NSW CO2 Storage Assessment Program. Suppliers are invited to submit a tender for the provision of all equipment, materials and personnel for the provision of these services to support the drilling of three exploration wells in August 2022. This service includes the provision and operation of motors and instruments that are attached at or near the drill bit to help efficiently drill the well.

D&C Replacement Covers and Liners for the Poowong and Devon North CWS Basins

Issued by: South Gippsland Water

Closing Date: 27/05/2022

Location: Victoria

Description: South Gippsland Water invite tenders to complete the design, supply, construction and commissioning of fully enclosed floating flexible geomembrane cover, geomembrane liner and associated works for its Clear Water Storage Basins at Poowong and Devon North. 

Provision of Stormwater Pipe Relining & Associated Works for Hume City Council

Issued by: Hume City Council

Closing Date: 19/05/2022

Location: Victoria

Description: Council is seeking the services of one or more suitably and experienced contractor to undertake the provision of Hume City Council’s Stormwater Pipe Relining and Associated Works. 

Broken Hill Sewer Lining Project

Issued by: Essential Energy

Closing Date: 01/06/2022

Location: New South Wales

Description: Essential Water invites responses from suitably qualified organisations using appropriate equipment for the Broken Hill Sewer Lining Project.

Provision of Stormwater Pipe Relining & Associated Works for Hume City Council

Issued by: Hume City Council

Closing Date: 19/05/2022

Location: Victoria

Description: Council is seeking the services of one or more suitably and experienced contractor to undertake the provision of Hume City Council’s Stormwater Pipe Relining and Associated Works. 

CCTV Inspection & Clearing of Stormwater Drainage Pipes, Pits & Associated Maintenance Works

Issued by: City of Greater Dandenong

Closing Date: 19/05/2022

Location: Victoria

Description: The work under this specification consists of the closed circuit television (CCTV) inspection of Council’s drainage pipes, the clearing of pipes and pits (including private property rear easements) and minor internal point repairs to pipes at locations and times as instructed by the Superintendent throughout the term of the contract.

CCTV Survey, and Cleaning Services for Wastewater Mains

Issued by: SA Water Corporation

Closing Date: 19/05/2022

Location: South Australia

Description: SA Water Corporation invites tenders from potential suppliers for the provision of CCTV Survey, Cleaning, and Reporting Service. 

Relocation of Water Mains

Issued by: Department of Transport and Main Roads – RoadTek

Closing Date: 19/05/2022

Location: Queensland

Description: RoadTek are undertaking preliminary works for the Mossman Daintree Stage 3 Project. The scope of work for this contract includes all works associated with the relocation of water main as part of the upgrade of Mossman Daintree Stage 3 (655).

Email for more information.  

For more tender information visit the Australian Tenders website

Carbon Calculator

Carbon Calculator key to reducing trenchless industry emissions

Not only is trenchless works typically more time efficient than open cut alternatives, meaning that machinery is operated for shorter periods, but traffic fuel consumption is lowered by trenchless methods.

By avoiding traffic disruptions, trenchless projects prevent the delays and detours associated with conventional underground infrastructure projects. This lowers the amount of petrol consumed, and subsequently reduces carbon emissions.

In addition, according to a study conducted for the North American Society for Trenchless Technology (NASTT) by the University of Waterloo, located in Ontario, Canada, it found that trenchless job sites produce fewer emissions.

They require minimal construction machinery and equipment as there is no need for excavation, compaction, backfilling and re-paving, dramatically reducing fuel consumption.

With the industry focused on preserving the environment and reducing emissions, the ASTT created a Carbon Calculator to promote innovation in the trenchless technology sector.

The purpose of the ASTT is to advance the science and practice of trenchless technology for the public benefit, while promoting education, training, study and research and practice for the public benefit and to publish the useful results of the same.

With this in mind, paralleled with the global goal of reducing carbon emissions, the ASTT formed a Special Interest Group (SIG) of leading industry professionals to create a solution that supports the mitigation of climate change impacts.

ASTT Councillor Matthew Boyle says the ASTT embarked to create a SIG to look at the impact trenchless technology has in reduction carbon generation in construction projects. “The SIG’s purpose was to provide members with access to a Carbon Calculator to quantify, and therefore promote, trenchless technology as a lower carbon emissions alternative to Excavate and Lay,” he says.

“The primary focus of the SIG was to provide members a tool to compare greenhouse gas emissions using comparative approaches in the capital delivery of services.”

As a result, the SIG approached the market for the development of the calculator and selected the Moata Carbon Portal from Mott MacDonald in August 2020.

At the time of release, it was the first carbon calculator capable of measuring the capital and operational carbon footprints of building information modelling (BIM) designed assets.

Boyle says following Mott MacDonald agreeing to be on board with the ASTT, the SIG moved into trial phase where asset owners were selected to use to the tools in their businesses for best use practices in Australia.

However, it was here where the process stalled and the use of the calculator in the trial was limited, little feedback was submitted, and the pandemic hitting Australia.

Boyle says the SIG has currently been suspended until further legislation and member support.

“We went with Mott McDonald because in New Zealand there is a legislative requirement to monitor carbon emissions, but until there is something in place like this in Australia, the SIG has come to a halt.”

In December 2021 the Australian Government released the June 2021 quarterly update of Australia’s National Greenhouse Gas Inventory.

Australia’s greenhouse gas emissions fell by 2.1 per cent in the year to June 2021, and have fallen by 20.4 per cent since 2005

Boyle says he sees the awareness of carbon emissions driving the trenchless community to look deeply into its supply chain to innovate and come up with new techniques and products to drive zero emissions further into the future.

“I see the specification of low emitting trenchless technology by asset owners and government organisations to be the standard across Australia and New Zealand,” he says. “I believe this will be backed up by legislation and the trenchless community will be well placed to help deliver on a low carbon future.”

With the trenchless community already doing its part to reduce emissions, Boyle says the rehabilitation process for overall asset installation can be measured, quantified, and improved into the future.

This is where the Carbon Calculator could demonstrate how the use of trenchless technology can reduce project carbon emissions.

“This is great evidence for asset owner members, contractor members and supplier members. It could also be used to see what part of the process emits more carbon, allowing innovation to occur to effect overall emission reduction,” Boyle says.

The ASTT says its Carbon Calculator is not to be relied on to make commercial decisions nor is it a tool that will accurately define Capital Carbon Baselines, noting that there is no specific, quantified carbon goal that the calculator aims to reach.

Rather, the tool will be used to promote best practices across the industry.

The three steps the calculator aims to take is:

1. Reduction – reduce the carbon impact of infrastructure.

2. Behaviours – improve the behaviours of designers, constructors, and entire supply chains to reduce infrastructure carbon.

3. Union – create a common way of working to calculate carbon reductions across the industry, setting the narrative.

Boyle says with the ASTT’s overall goal being to advance the science and practice of trenchless technology for the public benefit and to promote education, training, study and research and practice for the public benefit, it is hoped the calculator will be used on individual projects and tested across various areas, with the onus on contractors and client organisations to use the tool and consider their own impacts.

“With this as our goal, we will support all measures that our members are taking to reduce emissions and promote to educate the greater community into the advancements and benefits of trenchless technology,” he says.

artificial intelligence

AI in the water sector: Safer, faster, better

Engineering graduates and other specialists are often employed to sit in front of video screens for weeks on end to watch footage from drone-mounted cameras being driven through pipes. The purpose? To assess where pipe maintenance needs to be carried out.

But no engineer wants to spend their days in front of a screen watching videos of the inside of a pipe. Fortunately, technology offers a smart solution for this.

What a difference data makes

Technology fuelled by artificial intelligence (AI) is driving change in the water sector. Once considered a threat to people’s jobs, such technology is now helping people do more of what they want to do, while meeting increasingly high expectations.

For example, councils and water authorities have extensive kilometres of underground pipelines for wastewater, stormwater and water.

“Many of these pipes are approaching the end of their life and they need to be renewed,” says John Phillips, Business Development Manager at Interflow, a leader in pipeline infrastructure. “Digging them up to replace them all would be extremely expensive and would disrupt communities.”

How, then, does a water manager assess where the work needs to be done?

Previously it has been undertaken by sending a camera through the pipes and relying on an operator to conduct an accurate analysis.

“By the time they engage a contractor to do the upgrade work, often the footage is very old,” Phillips says. “Things could be completely different by the time we go to do the job.”

That’s where a neat, AI-based solution comes to the fore.

The future of water management is here

A faster, more accurate solution is now being utilised by leading councils and authorities. It’s one that removes repetitive and low-value work and liberates engineers and others to do the higher-value tasks that keep communities’ infrastructure running smoothly.

“The analysis of the condition of the pipes can all be done by machine,” says John Weaver, Contracts Manager at Interflow.

Instead of camera footage being analysed by humans, it is analysed by an AI engine that has been trained on tens of thousands of hours of similar footage.

“It categorises every individual issue found and provides an immediate, real-time report of the entire pipe network,” Weaver says.

“A recommended capital works program, complete with anticipated costs, comes with the analysis. This means the council or water authority can work that program into their budget over the next four or five years.”

The transformative effect of AI is making condition assessment reports and asset maps faster, more objective and more consistent. Wherever such technology is introduced it removes often mundane and repetitive work and frees engineers and other staff to perform higher-value tasks.

And in the current environment in which the war for talent has become very real, anything that can be done to make work more engaging and relevant is welcome.

For more information visit Interflow

L&D Micro Tunnelling

L&D purchases new high-power vac truck

L&D Micro Tunnelling offers a range of services including free boring, sleeve boring, pipe jacking, hydro excavation, and pilot auger boring, as well as specialist machine hire. Co-owners Luke Lewis and Chris Dean specialise in high-accuracy laser guided boring; the company has three tunnel boring machines (TBMs) operating throughout Victoria with drill heads ranging from DN350 to 600.

As the newest addition to its fleet, L&D Micro Tunnelling acquired a CAP VAC INDUSTRIAL 3200 by KOR in December 2021. Mr Dean says the company selected this machine because it was the best in the market in terms of the power of the vacuum and quality of the truck.

It was the final piece of the puzzle for the company. Finally completing their third laser guided boring machine, LD3.  L&D is no stranger to the CAP VAC INDUSTRIAL 3200. The company previously used to hire the units, but due to the rate at which they were using it on jobsites, it made more economical sense to buy a truck of its own.

The CAP VAC INDUSTRIAL offers both a wet and dry function. The capability of the unit to complete dry vacuum recovery applications increases the versatility and productivity of the unit.  Meaning the company can tunnel through clays adding water as a traditional method, or when they encounter dryer ground condition such as mudstone and siltstone, they can drill through these materials without adding water and therefor recover more spoil per tank. The high power of the vacuum is capable of either method what ever the project requires. 

Since acquiring the new machine, Mr Dean says the truck has been out in the field almost every day.

“It’s really the best product in its class. It’s the most powerful, most versatile, and we use it on nearly every job we complete, we only wish we purchased it sooner.” he says. “Primarily used with our tunnelling machine It also allows us to give clients the option to do hydro excavation onsite as well.”

The CAP VAC INDUSTRIAL by KOR is designed for Australia with a simple and ergonomic design tailored to our conditions. With 270-degree boom rotation and an 8-inch vacuum hose, this wet/dry vacuum recovery unit is ideal for businesses looking to expand their operational capability to complete more dry excavation work.

With a 5100 kg payload, the high-powered vacuum drives higher productivity and efficiency while reducing operating costs with lower fuel burn than traditional equivalents.

Mr Dean and Mr Lewis understand the need for precision, pride themselves on building client relationships and thrive to always deliver an economic, reliable service to companies across Victoria. That’s why they invest in only the best machines to deliver the greatest outcomes for their customers.

Established in 2015, L&D Micro Tunnelling is based in Seaford, Victoria, around 36 km from Melbourne CBD.

For more information visit L&D Micro Tunnelling

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Belaringar Creek Syphon Pipe Replacement

Issued by: Public Works Advisory

Closing Date: 19/05/2022

Location: New South Wales

Description: The Albert Priest Channel which supplies raw water from Warren to Nyngan consists of a DN900 reinforced concrete (RC) pipeline across the Belaringar Creek. This existing pipeline (hereinafter called “syphon”) has deteriorated and needs replacement. The designed capacity of the syphon is 60 ML/d.

Under this contract, a new syphon pipeline across and under the Belaringar creek shall be constructed together with associated structures such as headwalls as stated in this tender document. The new syphon shall be installed parallel to the existing syphon and connected to the existing open channel section on both ends

Provision of stormwater pipe relining & associated works

Issued by: Hume City Council

Closing Date: 12/05/2022

Location: Victoria

Description: Provision of stormwater pipe relining & associated works

Harrier Parade Sewer Pump Station 3C Upgrade

Issued by: Tamworth Regional Council

Closing Date: 12/05/2022

Location: New South Wales

Description: Council is seeking a suitably qualified contractor for the construction of the upgrade of Harrier Parade Sewer Pump Station (SPS). Due to increased network flows and the need for additional emergency storage, the Harrier Parade Sewer Pump Station 3C is to be upgraded to pump an ultimate loading of 70.8 L/s with two pumps in a duty/standby arrangement. This will be via a new SPS constructed adjacent to the existing SPS.

Umbakumba – Bore Rising Main and Associated Infrastructure Diversion and Sewer Pump Station Upgrade and New Sewer Rising Main

Issued by: Power and Water Corporation

Closing Date: 25/05/2022

Location: Northern Territory

Description: Umbakumba is a remote aboriginal community located east of Angurugu near Little Lagoon and Port Langdon on the north east coast of Groote Eylandt. Umbakumba has a population of 549 people. A new subdivision is planned to the south west of the community. The location of the new subdivision has resulted in the diversion of the bore rising main and associated infrastructure.

The bore rising main and associated infrastructure diversion is a priority and must not be delayed due to any sewer SPS and sewer rising main works.

The existing sewage pump station (SPS) #1 was built in 1981. It was identified in the Strategic Indigenous Housing and Infrastructure program (SIHIP) that the SPS and rising main was undersized resulting in the SPS upgrade and new sewer rising main works.

Spark – North East Link Project – CCTV (Stormwater Drains and Sewer)

Issued by: Capella Capital Pty Limited

Closing Date: 26/05/2022

Location: Victoria

Description: Express interest for the CCTV (Stormwater drains & Sewer) opportunity.

Water Mains Upgrade (Stage 3)

Issued by: Cook Shire Council

Closing Date: 18/05/2022

Location: Queensland

Description: Cook Shire Council invites tenders from suitably qualified tenderers for construction of the Cooktown Water Mains replacement and all supporting infrastructure as described in more detail in the document.

Email for more information.  

For more tender information visit the Australian Tenders website

Wilmot Pipelining commits to customer service

With these large-scale projects, including the successful delivery of the largest UV cured-in-place (CIP) liners ever installed in Australia at the end of 2021, Wilmot has continued to focus on safety and customer service

The management team at Wilmot strongly believes that customer service and safety comes hand-in-hand.

Wilmot Human Resources (HR) Manager was recently quoted saying, “if our trucks are clean and tiddy and safe, and with our staff well trained, the chances are increased that a tidy job site will lead to customer satisfaction due to quality workmanship and service”.

Managing Director Andrew Wilmot says this quote from the HR department started an important discussion around how Wilmot Pipelining has had so much praise recently around the company’s great service and excellent communication with both the public and the asset owner.

He says the customer satisfaction experience is based on open and honest lines of communication with the client and key personnel delivering on the field. It is also based on well-maintained plant and vehicles and management systems.

Wilmot Pipelining is accredited under International Organisation for Standardisation (ISO), 9001- Quality Management systems, 14001- Environmental Management systems and 45001 Occupational Health and Safety Management systems.

“With the commitment to quality products and customer service combined with our ISO accreditations for our management systems and service is of the highest quality in the industry,” Wilmot says.

“However, this is not a done deal. We will always continue to improve our processes and management systems in order to deliver quality products and services while keeping everyone involved safe.”

For more information visit Wilmot Pipelining

Thinking outside the box

David Dodemaide is the general manager of Rangedale’s Rehabilitation and Renewals (RRR) division, which specialises in trenchless rehabilitation and renewals. This arm of Rangedale has been operational since February last year, but Dodemaide has a full history in rehabilitation, having worked for 25 years with experts in rehab KA-TE, Inliner, Interflow, Comdain and Insituform.

Rangedale Group Managing Director  Neil Kermeen brought Dodemaide onboard to get the arm of the business going, and since then, the division has delivered a number of projects for local councils, other tier one/two organisations and water authorities.

The most well-equipped drainage and civil services company in Victoria, RRR’s most recent innovative contribution to the industry has been a method for relining boxed culverts.

Traditionally, most pipeline relining projects across Australia have been for circular or ovoid cross sections. Boxed culverts have been relined in the past, adopting slip lining methods whereby a liner is made-to-measure in the factory smaller than the existing culvert.

The liner is then pushed or pulled through the existing structure, leaving a gap between new and old that is filled with grout. This smaller cross-section usually results in diminished hydraulic capacities after relining. Costs and construction times also increase due to the large volumes of grout required to fill the gap between old and new.

Case study 

In February of this year, Rangedale Rehabilitation and Renewals was awarded a project by BMD Constructions, contracted by Major Road Projects Victoria.

The contract was to design and construct the relining of two boxed culverts.

RRR has previously been involved in joint projects with BMD, and had developed  a strong working relationship with BMD. As a result the company was approached to carry out the relining of two boxed culverts.

At 450 mm wide and 300 mm high, the two boxed culverts were requiring urgent repair works.  The solution needed to be cost effective, meet the tight project timelines, ensured a 100-year design life, and to not alter the hydraulic capacity of the newly installed drain.

Rangedale offered a unique solution to BMD and the asset owner. A German-manufactured Saertex circular UV-cured, cured-in-place pipe (CIPP) liner is inflated to the highest pressure and formed to the rectangular shape of the culvert.

The Saertex CIPP liner is designed in accordance with 100-year long-term properties and is deemed the best in its class with an extremely high stiffness modulus.

The liner assumes the shape of the culvert. Small gaps left in the corners are filled with a highly flowable grout to further support the liner. The grout has no bearing on the structural integrity of the liner – it only adds additional support to the liner in the corners.

Furthermore, the GRP liner surface is almost frictionless, providing the client with an increased hydraulic capacity after relining.

The result exceeded expectations, and the company said it plans to use the technology on future projects.


RRR delivered another complex and critical project in January this year for Programmed Facility Management (PFM) and principal water authority Greater Western Water (GWW).

RRR was contracted to reline 14 sewer access chambers, each varying in condition, with hindered access to the structures where GWW customers were depositing trade waste into the sewer system.

There were three major challenges that faced the RRR team on the project. The first was that the area was a designated ‘no-go zone’. Working downstream of the industrial waste discharge points, the team faced high flows of hazardous effluent that required a diversion of sewer inflow and thorough risk management.

The second challenge was that each access chamber manhole was severely degraded. Decades of highly corrosive effluent passing through the system had corroded the concrete, causing significant damage.

Thirdly, the high-risk profile of the project meant PFM and GWW needed a contractor who could minimise entry to the fully deteriorated structure.

Traditionally, access chamber rehabilitation solutions rely on the integrity of the existing structure in order for a protective coating to be applied and bond to the remaining surface of the access chamber. Other systems require extensive operator entry to install the liner such as slip lining and other hand applied structural liners. Rangedale offered a structural lining system that did not rely on the integrity of the manhole and was installed with a method that minimised operator entry.

Rangedale installed the Vertiliner system which is a UV cured-in-place pipe (CIPP) liner, manufactured to the exact fit of each access chamber. The liner was installed from surface level without entering the access chamber, then inflated with air pressure and rapidly cured using ultraviolet (UV) light mounted inside the inflated liner.

The end product was a structural glass reinforced plastic (GRP) pipe liner, installed as a structural liner independent of the original access chamber. Using unique UV cured CIPP technology, Rangedale installed 14 structural liners within a three-week period from surface level. The RRR Team are the only Australian land-based contractor to have undergone the extensive training and R&D requirements needed in order to install these liners.

This state-of-the art technology is new to the Australian rehabilitation and renewals sector and represents industry leading best practice.

For more information visit Rangedale

Providing cost-effective repair solutions

Aussie Trenchless’s SRP EXP Spiral Lining System is designed to rehabilitate pipes from DN150 to DN1200 using a selection of six different sized profiles.

The SRP EXP sizes range from a profile type E7-050-5 for DN150 to DN250 pipes, E9-085-6 for DN300 to DN450 pipes, E14-085-6 for DN375 to DN600 pipes, E20-085-6 for DN600 to DN900 pipes.

Wastewater and sewer pipeline networks are under stress, as time goes by, underground pipeline networks continue to age and breakdown, with repairs using traditional civil open cut methods being far too costly and disruptive on communities.

Aussie Trenchless director Chris Meredith says trenchless rehabilitation techniques continue to grow in volume as they are a cost-effective repair solution.

“The SRP EXP Spiral Lining System can be installed under flow conditions, with no by-pass pumping needed it is quick and efficient using a third-generation high quality profile to ensure ease of installation, providing a value-added outcome for the network owners,” he says.

The SRP EXP Winding Unit and Cages are a standard design. Each winding unit supplied is the same, the cages vary in diameter to suit the underground pipe size and all parts that make up the cages are standard and interchangeable on some cage sizes.

If a client requires a special diameter cage outside of the SRP EXP product range, Meredith says the company can design and supply it.

“I am looking forward to No-Dig Down Under in June this year where we will be displaying our equipment and technologies for the first time in two years following the pandemic,” he says.

“It will be good to see a wide range of trenchless products and services on offer. From construction tools like drilling and micro tunnelling rigs, to location and mapping services, with many and varied lining systems and products.

“In general, all agree that the trenchless industry is in good shape. The industry has solutions for most underground issues to ensure the above ground footprint and disruption is minimised during a trenchless installation.”    

Spiral lining is now available to all trenchless rehabilitation contractors in Australia and overseas through Aussie Trenchless.

Meredith says it is no longer benefiting the special few, with the spiral lining market now continuing to increase due to its availability, versatility, and competitiveness.

It can be installed under flow conditions, used in a wide range of pipe sizes, it has expanding tight fitting profiles and fixed diameter profiles with a grouted annulus gap.

“Spiral Lining profiles will continue to advance, with improved installation techniques and site application as a wide range of contractors become involved in spiral installations,” he says.

For more information visit Aussie Trenchless

Smart Lock

Case study: Smart Lock restores badly damaged GWM Water network

Located in regional Victoria, local utility GWM Water discovered that one of the network drains had been badly damaged by an external source. The drain had a diameter of 375 mm, and damage was only the top third of the pipe.

The repair proposal offered up several different options with varying cost and different degrees of difficulty accompanying each.

It was important to work through the different scenarios with the client and look at what was going to deliver the best value for money, cause the least disruption, and generate the greatest long-term outcome.

There was the option of setting up a bypass line over a train line, which instinctively brings with it a complete set of complications that must be worked through, as well as the planning process and time restraints.

By using this methodology, there were options to restore the line by either cutting it out and replacing it in its entirety or installing a new top section of host pipe and then patching the area using a bladder in the network.

The second option of patching also brought its own challenges around formation of the patch, managing the host pipe repair under inflation, and the team would still have the bypass line to work through.

The suggestion was made to rebuild the line using Smart Lock. This was something the utility had not seen or used before on its network. Smart Locks can be installed to rebuild the line under flow, in this case removing the requirement of bypassing and managing the bypass across a train line.

Once GWM Water saw the way that Smart Lock works, the client realised this was the best option on this desperately needed repair. GWM Water was impressed by how the stainless-steel banded together with the silicate impregnated fibreglass to restore the pipe’s shape and build structural integrity back into the line.

Work commenced and the damaged pipe was rebuilt using 5 Smart Locks, each locking into the previous one by managing the pressure used to blow out the packer. Once all the Smart Locks were joined together under live flow, CCTV footage of the drainage system was taken, and the outcome was demonstrated to be successful. The section of the pipe was covered in concrete to alleviate the same mistake happening again.

The finished product came up extremely well with little interference to the network and definitely a great saving to the client.

How it works

The Smart Lock is an innovative solution that is quick and easy, completed in three simple stages: load, lock and leave. By wrapping the stainless-steel sleeve with fibreglass and silicate resin and sending the packer down the pipe and into position, the Smart Lock solution is loaded before being locked into place by the innovative ratchet system to complete the repair.

With an average installation time of only 20 minutes, the installation team can leave to get to the next job as the resin impregnated fibreglass matting is left to cure behind the stainless-steel sleeve.

Smart Lock is ideal for localised defects such as cracks and holes, root infestation, water infiltration, displaced joints and redundant lateral connections. All can be repaired by installing a Smart Lock directly at the location. The solution provides a cost-effective alternative to excavation, relining or pipe replacement and is a permanent and structural repair.

A powerful drilling solution for tight, narrow job sites

One of the major challenges faced by horizontal directional drilling operators is balancing the need for both power and accessibility. This is particularly the case with large-diameter drilling and infrastructure upgrade projects performed in densely populated urban areas.

These were the challenges faced by WA based drilling operator CD Drilling, which provides drilling services to major national and local infrastructure operators, mainly for urban renewal projects. The company also operates in regional WA providing drilling services to leading mining companies. 

With an increased demand for large-diameter drilling projects in urban areas, CD Drilling approached Vermeer WA & NT for an equipment solution to bump-up their productivity. What they needed was a powerful drilling solution for tight, narrow job sites.

The Vermeer D130S – Combining power with accessibility

With a need for both power and accessibility, the Vermeer D130S horizontal directional drill loomed as the prefect solution for CD Drilling.

The Vermeer D130S is a recent addition to the Vermeer range of drills. Designed and built to take on challenging large-diameter drilling projects, without worrying about space restrictions, the Vermeer D130S also keeps surface disruption to a minimum.

Being ideal for drilling projects in densely populated residential areas, the Vermeer D130S has quickly been adopted by drilling operators around the world. Now, CD Drilling is the first operator in Australia to take delivery of the revolutionary machine.

CD Drilling Operations Manager, Brynn Silke, welcomed the new addition to their fleet.

“The D130S has everything that we need in a drill – heaps of power for demanding jobs, plus a small footprint, so it fits into tight residential spaces, and on the back of a semi-trailer when we need to ship out to mine sites. We’re proud to be the first company in Australia to take delivery of the Vermeer D130S, and it certainly puts us ahead of our competitors,” Silke says.

The Vermeer D130S is equipped with 578,200 kN (130,000 lb) of thrust and pullback, and maximum rotational torque of 20,337 Nm (15,000 ft-lb), making it capable of penetrating through an array of difficult terrains and ground conditions.

Machine manoeuvrability is key to navigating tight, narrow jobsites. With a length of 10.2 metres, and a width of 2.5 metres, the self-contained, compact design of the Vermeer D130S allows for convenient transportation, navigability and minimized setup time.

Increasing drilling productivity

The Vermeer D130S enables drilling operators to increase their productivity through a number of key product features and options.

The drill features an increased rod capacity and an optional crane.

“The D130S allows us to drill more as were able to reduce downtime from changing rod baskets. By having a crane onboard, we don’t need a 15-tonne excavator to load rod baskets. This also means we don’t have to worry about extra equipment on cramped job sites,” says Silke.

The stackable rod box/basket increases the rod loading capacity of the drill. Overall drilling efficiency is further increased by enabling a full set of rods to be loaded into the machine with a touch of a button.

Making it easier for operators

For precision and reliability, the control system in the Vermeer D130S has been upgraded to the Plus+1 operator system, enabling a seamless, user-friendly bore path adjustment experience for the operator.

The Vermeer D130S also includes an AutoSteer system, which automates certain drill head motions, helping operators to set and adjust rotation duration and direction while maintaining a preset thrust pressure to get through hard ground conditions. This enables drilling consistency.

The D130S also features a climate-controlled cab to maximize safety and comfort, thus maximizing operator productivity. An improved engine hood design facilitates hassle-free machine maintenance, so the operator can quickly access various machine components to conduct maintenance checks.

“The new improved features of the Vermeer D130S have emerged from feedback received from operators from around the world. We’re excited to have a powerful yet nimble drill, suited for Australian conditions and inner-city jobs, ready for our customers in our territory,” says Wes McCartney, Managing Director of Vermeer Equipment of WA and NT.

Ready to help you

If you are facing the challenge of powerful drilling in tight locations, the Vermeer WA & NT team are available to help. To discuss your particular specific drilling needs, call (08) 9479 4994.

S&Z Australia

S&Z Australia support North East Link early works

S&Z were chosen to reposition several utilities to allow the tunnel to enter and exit without obstruction from pipelines, conduits, and services. These included watermains, major power and gas mains, and services.

General manager Jim Pound says the company worked for several different contractors and were required to liaise directly with the various infrastructure companies to ensure their individual requirements and outcomes were met.

“After we successfully delivered 300 mm diameter steel gas main across Lower Plenty Rd and up the Greensborough Highway, we were then asked to install a bank of six large bore HV electrical conduits for another contractor,” says Pound.

The gas and power bores were delivered during night works and with restricted hours. This provided an additional challenge to install long strings of conduit and steel pipes within the tight time frames.

Pound says the horizontal direction drilling of steel pipes that don’t have the flexibility of PE pipes is difficult and trying to protect the lining of the gas pipe brought complex measures and procedures.

“In the end the Gas Authority were very happy with the outcome and have a much better level of comfort regarding HDD installation of steel gas mains,” he says.

The realignment of a watermain and water service followed which were all delivered without any issues.

On each section of the project, and for each different contractor or authority, environmental protection measures and procedures were required to protect parks and waterways and manage the drilling waste appropriately.

As with every project S&Z deliver, safety was also a major priority, working on major roads with heavy vehicles and during night hours.

“The best outcome for us is a project delivered – safely, on time, without incident, to our client’s satisfaction. This was certainly the case on all these projects,” says Pound.

S&Z Australia specialise in trenchless pipeline and conduit installations and are experienced at helping deliver large infrastructure projects as well as small to medium projects.

Should a project require pipes or conduits to be installed without the interruption caused by open excavation, please contact S&Z Australia.

For more information visit S&Z Australia’s website

Larger and longer: TRACTO drill facilitates contractor’s biggest installation

Established in 2013, Jelmac is a proven trenchless technology leader in Victoria, specialising in horizontal directional drilling (HDD). Based in Melbourne, the company works across all major utility sectors and essential services, as well as local builds and small-scale projects.

Over the past few years a significant portion of Jelmac’s resources have been focused on the considerable upgrade to the rail network in suburban Melbourne. The company prides itself on it’s experienced and reliable team, which relishes tackling challenging briefs, no matter how big, small, unique, or complex, working hand in hand with it’s clients to ensure it does everything it can to get the job done, no matter how complex or unique, with full transparency along the way.

The GRUNDODRILL 28N is the seventh HDD rig in Jelmac’s fleet, featuring drills of varying sizes and capabilities. The diverse machines give the company the flexibility to use a ‘horses for courses’ approach to jobs, depending on variables such as the size of the jobsite, geology, and the length and diameter of the installations.

One of the key factors which made the machine so attractive to Jelmac was the machine’s immense power, with 100 per cent of the rig’s 224 kW of power directed towards drilling operations. According to TRACO, this aspect of the machine’s design and performance is unique in the up to 300 kN pulling force power class.

The extra power also supports an advanced mud system, supplying up to 650 l per minute of bentonite, facilitating increased productivity and faster drilling, as well as opening up the possibility for contractors, like Jelmac, to undertake larger and longer bores.

In addition to this power and the effect it has on the functions of the GRUNDODRILL 28N, the drill also features automated and comfort benefitting the end user. Two multi-function joysticks are used for all functions in bore and drive mode and can be switched between manual, semi-automatic and fully-automatic modes.

In the airconditioned cabin is a panel PC with touchscreen and internet connection, making operations straight forward for the end user. Custom ergonomics have also been considered, with an extra-large and comfortable seat, with air suspension and automatic weight adjustment.

Trenchless Australasia spoke to Jelmac Managing Director Brad Boote on the site of a rail project in southeast Melbourne, where the GRUNDODRILL 28N recently completed a 370 m long bore with a diameter of 450 mm in siltstone which he believes to be the biggest installation in the company’s history.

“This installation we’re working on here is probably the biggest bore we’ve ever done, lengthwise at the very least,” he says.

“Since taking delivery of the machine in August 2021, we’ve seen this machine stack up against similar rigs we’ve used in the past with a few key advantages.

“The number one being it’s fluid delivery ability – there’s a lot more litres per minute that we can pump down the borehole which helps us with larger diameter bores, like we’ve just done here,” he says.

Mr Boote says another advantage of the GRUNDODRILL 28N is it’s capacity to house almost 300 m of drill rods, meaning on this particular installation his team only had to load a few rods at the very end to get reach the final length of the installation.

“A lot of machines only have 180 m of rods onboard, so this would’ve been a big job for a machine like that. The other thing is, at only 3 m, these rods are easier to handle; changing them out is a one person job, whereas with other machines it would’ve required loading one rod at a time using an excavator taking up two people.

“A lot of our work is generally under 250 m, so the 28N fits the purpose really well with the diameters that we do, the fluid delivery and the rods – so those three aspects are really important for us.

Mr Boote says because a lot of Jelmac’s work is on confined job sites, the design of the machine means it’s suitable for most of the projects they work on. Beyond the technical specs and features of the machine, the client-supplier relationship is also important to the company.

“That is very important to us and is another reason why we decided to work with TRACTO,” says Mr Boote.

“Investing in this sort of equipment is always a big decision and a massive commitment. We need to know that we can rely on TRACTO for support, training, sales, servicing and spare parts to ensure the machine is in operation when we need it to be, maintaining the efficiency and the standard of work that our partners have come to expect from Jelmac.”

“So far we’re really happy with the decision. I hadn’t had a chance to sit on the machine while it was operating on a job until last week and it was a dream.”

For more information visit TRACTO-TECHNIK’s website

Powerful pumps – the heart of HDD maxi-rig spreads

If the pumps are down, the drilling stops

In the Australian HDD sector there is a limited number of available maxi-rigs and powerful mud pumps. Having ready access to additional maxi-rigs and powerful mud pumps is a key means to maintaining project productivity and mitigating the impact of unscheduled repairs. If the pumps are down, the drilling stops.

Mud pressure is lost as it moves through the surface piping and a lot more as it moves down the drill string. Most of the pressure is expended in a jet stream at the drill bit and as it passes through the stages of a downhole motor if being used. At this point the mud pump needs to provide additional pressure to push the mud back along the annulus to the surface, while maintaining an operational long term duty cycle.

It is also important that the mud pump is sized appropriately to adequately cope with the volumes of drilling fluid required and to maintain adequate annular velocity in the borehole to ensure cuttings remain in suspension in the drilling fluid until the fluid exits the borehole.

The capacity of the mud pumps is commonly misunderstood and misrepresented. It is common for people to promote their mud pumps as having a 500gpm (1,892lpm) capacity and a 500 psi pressure rating. While both numbers may be on the spec sheet, promoting the pumps as a 500 gpm pump at 5000 psi is almost certainly incorrect.

For example:

A common HDD pump such as the EWECO 446 – a good all-round pump for smaller projects – is often quoted as having an output of 56 5gpm with pressure rating of 5000 psi. While both numbers are true, they are not true together.

The spec sheets show that the pump will do 565 gpm at 1200 psi at 440 rpm max with 6-inch diameter liners.

Or, if the liners are changed to 3-inch diameter, the pump will output 5000 psi, but even at a max of 440 rpm, the flow output is only 141 gpm.

For a long duration longevity on a project, it is good drilling practice to limit the operation to 60 per cent – 70 per cent of the capacity, particularly pressure capacity.

Assuming for small HDD projects where flow is more important than pressure, the minimum pump in the example above with the largest liners which should be considered is a 565 gpm x 65 per cent = 367gpm pump. Applying the same logic to the pressure rating 1200 psi x 65 per cent = 780 psi

While there are many contributing factors to pressure such as choke points, valves, drill pipe joint ID, pipe internal roughness, jet nozzle diameter and number to name a few, it would not be uncommon to see 500psi of pressure on a 1000 m jetting hole running 3 x #16 jets at a flow rate of 360 gpm flow rate.

If a downhole motor forms part of the bottomhole assembly (BHA) where the formation is rock, it would not be unreasonable to add 150 – 200 psi to the pressure to operate the motor effectively on bottom i.e. 200 psi + 500 psi =700psi. For long term operation, the pump is effectively at maximum capacity.

In general terms, additional pumps can be coupled together to increase flow rate but not increase pressure.

A longer bore or a higher flow motor would break a single pump in a short time. Double pumps don’t provide additional pressure.

To solve the problem, the pump liner diameter must be reduced, which in turn increases pressure output but decreases flow output. So to drill a longer bore (>1500 m) with large downhole motors (>8-inch), triple or quadruple pumps would be required to provided operational longevity.

Or get bigger pumps

Maxibor has a fleet four of the largest pumps in the HDD industry: two Gardner Denver PZ9 pumps with 1000 HP engines and two Gardner Denver PZ8 pumps with 750 HP engines. 

These are 100 per cent duty rated oil well servicing pumps, primarily due to the low-speed design (130 rpm stroke rate compared to the 440 rpm in the previous example).

They have proven project after project to operate at high flow AND high pressure all day every day for months on end.

From an HDD perspective, dual PZ 8 / 9 pumps have delivered bores in Australia at lengths of 2,500 m in the civil industry and at lengths of 4,000 m in the gas drainage industry.

These pumps allow very long bores to be drilled to solve infrastructure installation challenges or they allow forward motor reaming. This is another technique to solve particular requirements where exit site sensitivities exist, or it is not possible to drill a mud return line. It is these types of pumps that allow high-performance, cutting-edge HDD bore designs to be achieved.

Pumps of this capacity are invaluable, if not a prerequisite, on long bore (+1000 m) and large diameter hole (+800 mm) projects requiring larger maxi-rigs such as the Gallagher 660e, Gallagher 600, American Auger 660 and the Vermeer D330x500, which are a key part of the Maxibor HDD fleet. They are most often required in Australia on river and harbour crossings and long and deep water and sewer projects.

Maxibor will be using its Gardner Denver mud pumps on two landmark projects requiring a total of seven bores each averaging over 2.2 km in length. Availability of the pumps has been one of the key factors in the selection of Maxibor as the HDD provider on these projects.    

A HDD provider like Maxibor, with its sizeable fleet of powerful pumps and maxi and other rigs, provides added comfort to project stakeholders that these key plant items will be available to enable the construction schedule to be maintained.

For more information visit Maxibor’s website

Sydney’s forgotten ghost tunnels all powered up with guided boring breakthrough

As part of the biggest upgrade to Sydney’s busiest railway station in decades, Directhitt Trenchless were contracted to supply and install four DN 630 HDPE liners and PVC electrical conduits to provide 33KV power to the new underground Metro station.

The boreholes constructed by Directhitt, connected the 27 m deep metro station box level B2 to an existing ghost tunnel, which was built in the 1920s as part of the Eastern Suburbs Railway line for Bondi and the Illawarra. However, it was never completed. Platforms 26 and 27 have sat unused since and will now house 17 new communications and power rooms to support the new Sydney Metro at Central Station.

The 90 m long microtunnells were constructed using an Akkerman Guided Boring Rig, which used a Pilot Tube and Laser Guidance System to accurately drill the pilot hole to line and grade in Class II Hawkesbury Sandstone.

The confined site prevented the use of a typical HDD rig set up, so Directhitt chose to use a Guided Boring rig with a compact 3 m jacking frame.

The Akkerman dual-wall pilot tube design allows the pilot tubes to be installed with pinpoint accuracy while reducing pressures necessary for the long installations.

The annular space between the inner and outer tube was used to pump drilling fluid lubricants to the Tri-Hawk drill bit.

The inner tube is treated for corrosion resistance and sealed for a clear site path to the target located directly behind the steering head and 165 mm drill bit. Once the pilot hole was completed the boreholes were then enlarged to 710 mm before the HDPE liners were fusion butt welded and installed into the boreholes, using the jacking frame. Given the confined site, the DN 630 HDPE liners were welded and pushed into the boreholes one section at a time.

Directhitt then installed the DN 280 PVC Electrical ducts into the HDPE liners and grouted the PVC duct annulas with a low thermal resistivity cementitious grout before final testing and commissioning of the conduits was completed.

The project presented many challenges for Directhitt to overcome, with COVID-19 shutdowns, border closures and managing crews in working bubbles to maintain a COVID-free workplace. Together, with the site access restrictions presenting constant challenges for the crew, Directhitt stepped up to the challenge and completed the project successfully.

The addition of the pilot tube system to Directhitt’s trenchless capabilities allows for the provision of varied and hybrid trenchless solutions utilising the best of grade control and accuracy from the Akkerman system with trusted hole opening technology and drilling fluid management from the HDD industry.

For more information visit Directhitt Trenchless’ website