Underground leak detection in the century of quantum technology

Australian researchers are using quantum sensing technology to detect leaks and breaks in underground water pipe networks.

Coordinated by the NSW Smart Sensing Network (NSSN), researchers from The Australian National University (ANU) and the University of Canberra, have joined forces with Sydney Water to trial the technology in an Australian-first.

The Head of Quantum Science department at the ANU, Professor John Close, said the new technology enables water utilities to monitor underground structures without having to dig, attach wires or insert probes.

“The quantum sensing technology we exploit uses cold atoms at a temperature 1 millionth of a degree above absolute zero as a falling test-mass,” said Professor Close.

“Precise lasers measure how far the atoms fall in a fixed time, allowing us to determine local gravity.

“The presence of a leak increases local gravity due to the increased density of the wet soil near the leak. This manifests as a longer fall for the cold atoms.”

Professor Close said the same quantum sensing technology that is being trailed with Sydney Water for leak detection could potentially be used to map and monitor aquifers, oil wells and underground mineral deposits. The technology also has applications in navigation on Earth and in space.

According to a report released by CSIRO in May 2020, advanced quantum technologies can create an $86 billion global industry by 2040. 

“Australia could generate $940 million in revenue if it can capture 5% of the estimated addressable market for quantum-enhanced sensors in 2040,” the CSIRO report anticipates.

Australia is one of a few world-leading nations developing this technology said, Professor Close. 

“New quantum technologies are likely to be key developments protecting Australia’s environment and sovereignty, and contributing to Australia’s prosperity in the 21st century, the century of the quantum.” 

The trial is part of NSSN’s existing collaborative Smart Sensing for Leaks and Breaks R&D project with Sydney Water that utilises a wide range of smart sensing technologies for leak detection. 

Dr Donald McCallum, development manager at NSSN, said the Network acts as a horizontal force in industry and research landscape, translating innovation from various industries to achieve the best outcomes for the people of NSW.

“The NSSN is proud to have played a role in bringing together the stakeholders, providing critical scientific oversight and program management to make this [project] happen,” said Dr McCallum.

To learn more about NSSN’s Smart Sensing for Leaks and Breaks project, please click here.

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Media: Shahrzad Abbasi - 0466 548 145