Western Australia Archives

Challenge

The utility partnered with Aqua Analytics to conduct a condition assessment on three critical water mains. The solution leveraged KenWave’s Dynamic Response Imaging (DRI) technology, a non-invasive acoustic method that assesses the remaining wall thickness of a pipeline without disrupting service or requiring excavation.

The project was designed to provide actionable intelligence on the asset’s current state, allowing the utility to make informed decisions about maintenance and renewal.

Methodology

The methodology for this project was centered on KenWave’s Dynamic Response Imaging (DRI) technology, a non-intrusive and non-destructive method for assessing pipeline condition. This process uses nonlinear vibroacoustics to gather data from external access points, such as hydrants, valves and potholes, to determine both the presence of leaks and the residual wall thickness of the pipes.

Detailed Inspection Plan: Aqua Analytics developed a comprehensive inspection plan for the three pipelines, ranging in diameter from 150mm to 600mm.
Non-Intrusive Technology: Using KenWave DRI, a team of technicians introduced specific acoustic signals into the water column and used sensors at existing access points (hydrants, valves and hydrovac potholes) to measure the pipe's dynamic response.
Data Analysis: The collected data was analysed in both the time and frequency domains to generate a residual wall thickness profile for each pipeline at a high resolution. This process provided a precise map of the pipe's structural integrity.
Leak Detection: As part of the same non-intrusive survey, the methodology also included a leak detection component to identify any existing leaks or anomalies.

Project Outcomes

952.3m of AC pipes inspected: A comprehensive condition assessment was completed on three separate pipelines, providing the utility with a detailed report on the state of almost a kilometer of critical assets.
Remaining wall thickness profiles generated: The project successfully produced a detailed profile of the remaining wall thickness for all three pipelines, with results showing sections ranging from 52% to 100% of their original nominal thickness.
No leaks or anomalies found: The DRI inspection confirmed the immediate operational integrity of the three mains, providing the utility with peace of mind.

Conclusion

This project demonstrates the critical value of non-invasive condition assessment for Western Australian water utilities and asset owners managing ageing infrastructure.

By leveraging KenWave’s DRI technology, Aqua Analytics provided the client with a precise, data-driven report on the condition of their asbestos cement (AC) pipes without the costs or disruption of excavation.

This actionable intelligence, gained from a detailed condition assessment, allows the utility to move from reactive maintenance to proactive asset management, prioritising renewal projects based on factual data and ensuring the long-term reliability and sustainability of their water network in Western Australia.

Challenge

Our client, Aqwest, manages a vast water distribution network, serving approximately 18,000 properties across a diverse landscape. Maintaining efficient water delivery and minimising water loss is a constant priority for the utility. Aqwest sought a comprehensive approach to leak detection and valve assessment to address these challenges proactively.

Solution

Aqua Analytics was engaged to conduct a thorough investigation of the distribution network, spanning approximately 140 kilometres. The project encompassed:

Desktop Assessment and Methodology Selection: Aqua Analytics conducted a detailed desktop assessment of the target zone, analysing available data and network characteristics to determine the most appropriate leak detection methodologies. This involved considering factors such as pipe materials, network pressure, and historical leak data.
Active Leak Detection: Aqua Analytics deployed a three-person team of skilled technicians to perform active leak detection across the 145 km of water mains. The team utilised various advanced acoustic technologies, including ground microphones, correlators, and loggers, to pinpoint leak locations with 1-meter accuracy.
Valve Condition Assessment: The project also included an assessment of 68 zone valves within the network—this involved testing valve operability and identifying valves that were not functioning as expected or compromising zone integrity.
Data Reporting and Visualisation: Aqua Analytics compiled all leak and valve data into a comprehensive report, providing the client with a detailed overview of the network's condition. Using high-accuracy GIS, interactive maps and visualisations were created to highlight leak locations and prioritise repairs.

Results

51 Leaks Identified: Aqua Analytics successfully located and pinpointed 51 leaks across the 145 kilometres of surveyed water mains.
Valve Performance Verified: The condition assessment of zone valves ensured their operational reliability, allowing the client to have confidence in zone boundaries.
Data-Driven Decision Making: The comprehensive report gave the client valuable insights into prioritising leak repairs, optimising maintenance activities, and developing targeted water loss reduction strategies.

Client Benefits

Reduced Water Loss: The project directly reduced water loss within the client's network by identifying and addressing many leaks.
Cost Savings: Reducing water loss translated into cost savings for the client, improving operational efficiency and resource management.
Improved Asset Management: The data-driven approach to leak detection and valve assessment enhanced Aqwest's ability to manage its assets proactively, extending their lifespan and optimising performance.
Enhanced Network Intelligence: Following the inspection, acoustic loggers and pressure transient monitors were deployed, adding a layer of network intelligence and insight.

Conclusion

Aqua Analytics’ comprehensive leak detection and valve assessment approach significantly benefited Aqwest. The project contributed to the region’s more reliable, efficient, and sustainable water supply by combining technical expertise, advanced technologies, and a data-driven approach. This case study underscores the value of proactive water management in conserving resources, reducing costs, and ensuring the long-term resilience of water infrastructure.

Challenge

Our client was facing a critical water loss situation on a remote island off the coast of Western Australia. A high level of leakage from the trunk main resulted in significant financial losses, estimated at $1,000,000 annually. The remote location and urgency of the situation required a swift and decisive response.

Solution

Aqua Analytics mobilised a team of experienced water network technicians to the island within days of the initial request. Leveraging advanced acoustic technologies, including TM2 Trunk Main Correlation, the team conducted a comprehensive leak detection survey. This involved:

Results

Almost 1,000,000 Litres Per Day Saved: The identified leaks were promptly repaired, dramatically reducing water loss and substantial cost savings for the client.
Prompt Mobilisation: Aqua Analytics' ability to quickly deploy a skilled team to the remote location was crucial in addressing the urgent situation.
Expert Teams: The technicians' deep knowledge of water networks and familiarity with the local infrastructure allowed for a targeted and effective approach.
Improved Network Intelligence: In addition to leak detection, Aqua Analytics identified other areas for improvement, such as compromised boundary valves, further enhancing the overall water network efficiency.

Client Benefits

Rapid ROI: The significant cost savings achieved through reduced water loss provided a fast return on investment, justifying the project's annual implementation.
Water Security: Addressing the leakage issues helped ensure a reliable water supply for the island community, a crucial factor in remote locations.
Sustainability: The project contributed to the client's sustainability goals and responsible water resource management by minimising water waste.

Client Quote: “Aqua Analytics’ quick response and expertise were invaluable in resolving our critical leakage problem. Their ability to mobilise a team to our remote island and deliver results promptly saved us significant costs and ensured the well-being of our community.”

Conclusion

This case study demonstrates Aqua Analytics’ commitment to providing personalised solutions for even the most challenging water loss scenarios. By combining cutting-edge technology with experienced personnel, the company delivered exceptional results for a remote island client, safeguarding their water resources and financial stability.