Smart Lock makes short work: Hong Kong sewer drain repair
Feb 20, 2023
When the Hong Kong Drainage Services Department identified a badly damaged pipe, it was Smart Lock’s sleeve solution that empowered contractors to successfully rehabilitate the damaged section.
The concrete drainage pipe was aged, partially collapsed, and had sustained severe damage from hydrogen sulphide attack.
Freyssinet Hong Kong was engaged by the Department to carry out a DN825 repair on the pipe. It was a challenging task from the start, with an access shaft required to commence the rehabilitation and other associated works that needed to be done on the important drainage asset.
Time was of the essence, as the sewer flow could not be reduced for any extended period of time. Engineers from the contractor company required a structural sleeve that would allow them to complete the job and was able to facilitate a fast-as-possible installation so that the sewer flow would not be greatly impacted during the work.
Adding to the growing list of requirements to execute the work, the proposed air packer needed a full flow through in the event that a short capacity drop was required upstream of the works. This flow through would need to be to be substantial.
After the necessary technical consultation, the Smart Lock sleeve solution was proposed by distributor Astra Syntech as it met all the criteria to successfully complete the works. The contractor was briefed, and the Smart Lock was accepted as the best solution. The job was commissioned shortly after.
Freyssinet’s sewer maintenance staff are accomplished with fibreglass silicate resin patching and experienced in the correct use of an air patch packer. The Smart Lock installation methodology is a close match to the teams’ existing skill set in the field of point repairs.
The installation took place in normal working hours in September 2022. The depth of the access shaft required a crane to lower the installation equipment and the 825 mm stainless steel sleeve. This was not a job for rope-lowering and retrieval.
After all pipe surfaces had been cleaned using high pressure water jetting, the Smart Lock wheeled-installation-trolley was set up and a trial placement was carried out to gauge position and pipe entry clearances.
With everything in order, the Smart Lock sleeve was positioned on the trolley at transport holding pressure. The trolley was pushed into the pipe and centred on the pipe defect. An installation air pressure of 35 psi was applied to the Smart Lock via the packer.
In just a few minutes the defect was successfully rehabilitated, and further reinstatement works were able to proceed.
This was the first project for the Australian-made trenchless solution outside of Australia and New Zealand.
The installation was observed by the drainage authority engineers at Hong Kong Drainage Services Department and the Freyssinet contractor management team and deemed a favourable outcome for all those involved.
More News and Articles
Mar 29, 2023
Water management: Spain invests nearly 23 billion euros
The Spanish government improves its water management and will invest nearly 23 billion euros to comply with European Water Directives.
Mar 27, 2023
UN World Water Day 2023: How municipalities can accelerate the water transformation
The United Nations is proclaiming the motto “Accelerating Change” for World Water Day on 22 March. The message: because the pressure on drinking water reserves is increasing worldwide, the change towards sustainable water use must be accelerated.
Mar 24, 2023
Innovative technologies remove pharmaceutical residues from wastewater
Every year on 22 March, World Water Day reminds us of the importance of one of the most important resources of life. Almost two-thirds of our planet is covered with water, but not even three percent is drinkable freshwater. Every …
Mar 22, 2023
Delivering sustainable solutions to solve water challenges
With British Water’s conference on creating a more sustainable water sector approaching, Stephen Kennedy, head of digital and innovation at MWH Treatment shares his views on celebrating recent successes in creating a more sustainable sector while also discussing the challenge …
Mar 20, 2023
Supporting the National Water Strategy through scientific research
This month, the federal government of Germany introduced the first National Water Strategy. “With this strategy, the federal government is shining a spotlight on the necessity of integrated water resource management, serving as a leading example of resource use in …
Mar 17, 2023
Trenchless manufacturer celebrates installation of 100,000th liner
SAERTEX multiCom®’s trenchless pipe relining product, SAERTEX-LINER, has been installed for the 100,000th time.
Mar 15, 2023
Versatile electric pipe-cutter makes UK debut
The first all-electric battery-operated lateral pipe-cutter to enter the UK market has secured sole distribution with pipeline equipment specialist Ant Hire Solutions.
Mar 13, 2023
Spring collaborates with Microsoft and Impact X on water innovation
The water sector’s innovation centre of excellence – Spring - is collaborating with Microsoft and Impact X on a new initiative to make tools and funding available for start-ups to accelerate their companies.
Mar 10, 2023
State of Global Water Resources report informs on rivers, land water storage and glaciers
WMO reports on freshwater availability in a changing climate
Mar 08, 2023
Australia: Centenarian sewer gets after-dark upgrade
Over 100 years since its inception, Brisbane’s S1 Main Sewer has undergone a seven-year upgrade.
Mar 06, 2023
UKWIR gives access to hundreds of water sector research reports
UK Water Industry Research (UKWIR) is providing free access to over 1,000 of its water sector research reports aimed at helping to improve water and wastewater services for customers, and protecting the environment.
Mar 03, 2023
Sector must challenge public misconceptions through engagement
The water sector must tackle “unfair criticisms” by sharing more about the great work it delivers, Yorkshire Water’s chief executive, Nicola Shaw, told attendees at British Water’s Better Together reception in Hull.
Smart Lock Group PTY LTD
Unit 1/18 Kimpton Way
VIC 3018 Altona
+61 0409 768 123