Air quality monitoring in a tunnel
Project
Boring of a tunnel in the T3A section of Grand Paris Express metro between the Pont de Sèvres and Issy-Vanves-Clamart stations.
Challenge
Need: track CO2 levels.
UBY solution
Installation and connection to UBY Environment platform beginning October 2020 until 2024 – 2025 when works are forecast to end. 8 hour and 15 minute average exposure limits have been set as alert thresholds on the platform.
Worksite receives alerts when these thresholds are exceeded.
Our sensors also record levels of BTX (benzene, toluene, xylene) thanks to the PID sensor. A suspicion of one of these compounds must then be confirmed by chemical-reacting tubes.
Levels of various gases, dust and VOCs are monitored as the tunnel is bored and our solution helps the worksite make sure ventilation and preventative measures are in place.
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