Scottish Water monitoring project wins award for Xylem
A ground-breaking project that is enabling continuous remote monitoring of a 16km trunk main has been recognised at the Water Industry Awards.
The Blairlinnans SoundPrint Acoustic Fibre Optic System, a joint project between Xylem and Scottish Water – and a European first, was named Asset Management Initiative of the Year at the awards ceremony on 4 July 2024.
The Blairlinnans water main is a 42in (1,067mm) pre-stressed concrete (PSC) pipeline that runs from the Blairlinnans Water Treatment Works to a service reservoir in West Dunbartonshire, Scotland. The pipeline was installed in 1974 and is critical to the ongoing operation of Scottish Water’s supply network.
Scottish Water identified the main as a high-risk asset, which prompted a complete engineering assessment to understand its true condition and prevent an unexpected burst.
Inspections using Xylem’s SmartBall and PipeDiver technologies provided the data necessary to conduct a thorough engineering analysis. The insights showed while most of the pipeline was in good condition, several sections had broken pre-stressed wires, which are critical to support operational pressures. If the wires break, a trunk main can lose its structural integrity, with a risk of failure.
In the first project of its kind in Europe, Scottish Water selected Xylem’s SoundPrint Acoustic Fibre Optic (AFO) system to continually monitor sections of the pipeline. SoundPrint AFO detects breaks in the pre-stressing wire that holds PSC pipelines together.
The system set-up comprises bundled, reinforced fibre-optic cable fed through the water main, which is connected to a data acquisition system to monitor the acoustic activity in near real-time. If a wire break occurs, it is detected by the AFO system, which is connected to Xylem’s AFO analysts via the cellular network.
Wire break events are investigated by the analysts, and with the help of machine learning, the break location is pinpointed. An email notification is sent to the customer, and the results are posted on a cloud-based system, which displays the pipeline status on colour-coded dashboards.
The monitoring, combined with further analysis by Xylem’s engineering service, enables utilities to make proactive decisions about which sections of pipe need to be replaced or repaired as deterioration continues over time.
