Business North September 2020

| 27 Volume 19 | Issue 3 businessnorth DEVELOPMENT » Watercare Central Interceptor The Watercare Central Interceptor project has just entered an exciting new phase with the commencement of excavation works. HEAD OFFICE: 192 Marua Road, Mt Wellington, Auckland 1051 0800 500 380 | sales@accurate.kiwi | www.accurate.kiwi • Industry experienced sales, service and support team providing the correct instrument, product information and support backup to meet your job demands • Compliant, calibrated and certified equipment that is tested with QA • Full in-house servicing and repair with factory trained technicians in both Auckland and Christchurch locations • Extensive hire and rental solutions for levelling, height safety, confined space entry and inspection • Accurate Training - learning courses and training options incorporating product, theory and practical with attainment and accreditation • ISO9001 certified company for technology solutions and support Solving Watercare’s portable gas monitoring solutions for the Central Interceptor. Finding a solution to monitor and measure the fumes, toxins and emissions has been a key element of Watercare’s Central Interceptor project. Building this 14km tunnel under Auckland, from Grey Lynn to the Mangere Treatment Plant has been managed and operated by Ghella Abergeldie. Hydrogen sulphide, carbon monoxide, oxygen and combustible gases are all emitted from wastewater and require regular monitoring with accurate sensors and fleet management to ensure these elements and levels are maintained within the environment. The team at Accurate, partnered with MSA Safety, have worked alongside key members at Ghella Albergeldie through- out the project, to diagnose, determine and establish the best equipment and methods required to provide the gas monitoring solution. MSA Altair 4XR and 5X multi gas portable monitoring solutions were chosen thanks to their durability, low cost of ownership, superior performance and Accurate’s ability to provide comprehensive after sales service. Combined with fixed Gasgard controllers, Prima transmitters and GX2 bump test stations, this system enables operators to perform regular calibration and bump testing. The use of MSA’s Safety iO as a reporting and fleet management tool was also pivotal in the decision to push forward with the MSA handheld gas monitoring option. Another key element to this project is the tunnel’s construction. Using a tunnel boring machine, which travels between 15 to 110 metres underground during construction, in the 4.5m diameter tunnel are a variety of access shafts, traps and drop shafts. Safe access and retrieval of workers to key entry points has been answered with Accurate supplying IKAR Davit arms for rescue purposes with rescue winches. Made in Germany, the combination of quality and cost-effectiveness of the AASS-3 davit arms proved unbeatable, with unrivalled durability (stainless steel construction) also a factor. Once completed, the Central Interceptor will be the longest wastewater tunnel in New Zealand and is forecasted to reduce overflows in central Auckland by up to 80 per cent when all associated projects are completed.