NZ Dairy Spring 2021

82 | nz dairy DAIRY SERVICES » NDA Engineering NDA pioneers spiral welding technology The dairy industry makes up around half of NDA Engineering’s client base. Precise machine welding (below). Karen Phelps N DA is about to embark on its largest project using smart new technology that is producing higher quality products more cost-effectively for the dairy industry. The company’s unique spiral welding technol- ogy has applications for a variety of products and industries, says NDA Innovation manager Cliff Ellery, and will shortly be put to use to fabricate a 600,000 litre tank 12 metres in diameter for Fonterra’s Te Awamutu plant. NDA staff members developed the spiral welding technology, which has now moved beyond the workshop and can be utilised on site enabling NDA to manufacture colossal water tanks insitu. Cliff says the team came up with the concept of on site spiral welding during lockdown then completed prototyping and design of the machine before constructing the first model. The Fonterra project comes on the back of the first project the insitu technology was utilised on, which was for Watercare’s new Waikato water treatment plant project, to make a tank for the wider project to add additional treatment capacity adjacent to the existing plant. NDA transported its tank spiral welding machine to site to fabricate the 500,000-litre tank that spans 11 metres in diameter and is six metres high. “Our spiral welding technology basically allows us to make a large cylinder in a continuous spiral,” explains Cliff. “It means we can make very large tanks more cost effectively and quicker than normal methods as there is no way you could make a tank this large in a workshop then transport it to a site.” “It means we can make very large tanks more cost effectively and quicker than normal methods, as there is no way you could make a tank this large in a workshop then transport it to a site.” • to page 84 PLATE PROCESSING, INDUSTRY LEADING SERVICE 1 BARNETT PLACE, TE RAPA, HAMILTON 07 846 2525 WWW.VULCAN.CO VULCAN IS PROUD TO SUPPORT NDA ENGINEERING • STEEL • STAINLESS • ENGINEERING STEELS• PLATE PROCESSING • COIL PROCESSING 0800 866 871 info@tectonus.com www.tectonus.com STORAGE TANK PROTECTION TECTONUS SEISMIC HOLD DOWNS By NZ s t ructural engineer ing special i s t s The Tectonus tank hold down (RSFD) is a self-centring, maintenance free anchorage system that offers superior seismic protection for storage tanks and assets in a range of industries: • Wine, Dairy, Petrochemical industries • Water & waste water storage tanks • Agricultural containers • Industrial liquid silos, oil & gas containers