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ECOTECH TOGETHER magazine Issue 3

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  • Ecotech
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  • Environmental
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  • Vibration
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ECOTECH TOGETHER magazine issue 3

01dB Leads Environmental

01dB Leads Environmental Monitoring on Asia’s Largest Railway Project - Malaysia’s MRT Main pic: Works underway for Malaysia’s MRT Line 2. Pic opposite: The ORION covers all vibrations created by human activity and offers unique features such as waterproofing and a battery life of 30 hours. After several years of noise monitoring for MRT, 01dB is now also focussing on the project’s vibration control. In 2012, 01dB and their partner in Malaysia began working with MMC-Gamuda KVMRT (PDP SSP) Sdn Bhd, the Project Delivery Partner of the Mass Rapid Transit Corporation on Phase 1 of MRT Line 2 – the largest railway project in South East Asia. MSungai Buloh–Serdang–Putrajaya MRT Line 2 is a fully automated and driverless rail system that forms part of the larger rail transport network in the Klang Valley area near Kuala Lumpur, Malaysia. The partnership was developed and championed by ACOEM Asia Managing Director, Patrice Pischedda. During Phase 1 of the project, 01dB integrated their DUO noise monitoring system to ensure effective noise measurement and compliance with the Malaysian Department of Environment (DOE)’s planning guidelines. Due to the success of Phase 1, Patrice was approached by the developers to provide a vibration monitoring solution that could be used in parallel with DUO. TOGETHER 2018 Issue 3

New vibration technology complements 01dB noise monitoring instruments The launch of ORION in mid-2016 gave Patrice the opportunity to extend 01dB’s relationship with the MRT Line 2 project. The portable, DIN 45669-compliant ORION was introduced into PHASE 2 of the construction process and will continue to be used throughout Phase 3 to project completion, which is expected in 2021. ORION guarantees international standards compliance ORION was used for Phase 2’s baseline monitoring (the ambient vibration level measured prior to construction works) and will continue to be utilised throughout the duration of piling works along 52.2 km of track, of which 13.5 km is underground. ORION’s measurement of Peak Component Particle Velocity (PCPV) and the resulting Peak Particle Velocity (PPV) will assess any potential structural damage in the area as a result of construction work and ensure strict adherence to government regulations. Throughout the MRT project, 01dB has also been working closely with the Institute of Noise and Vibration at the Universiti Teknologi Malaysia Kuala Lumpur (INV). Under the ECOTECH leadership Managing of Professor Director, Ir Nicholas Dr M Salman Dal Sasso Leong, (pictured one of South right) was East part Asia’s of an foremost expert team experts of engineers on the environmental and researchers impact investigating of noise the and effect vibration, of a non-explosive guidelines methane were established gas on mixture what on type various of instruments ultra-wide should band channel be employed coefficients. and how to use them for the construction process. Using simplified apparatus and a Vector Network Analyser, the research espoused that a simple sensor could detect the accumulation of methane gas in an environment well before it becomes explosive at around a concentration of 5%. The study suggests that this technique could be used to determine the presence of non-explosive levels of methane for situations where methane builds up gradually in a confined or enclosed area in industrial mining activities. “ With both DUO and ORION in place on the MRT Line 2 project, we have the ability to deliver consistently accurate monitoring data for noise and vibration. ” As a result of the investigation, Nicholas and the international team* wrote a paper titled, “Ultra wideband channel coefficient measurements for detecting methane gas in a multipath environment” which was published in the prestigious Australian Journal of Electrical and Electronics Engineering (Volume 13, 2016 – Issue 3) and online at http://bit.ly/2znJnYJ (Continues on page 12) ecotech.com 11

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