Located in the north west of Vietnam in rough terrain jungle, the Nui Phao project is a polymetallic deposit, with an initial Ore Reserve of 53Mt. The site has been defined to contain; tungsten, fluorite, bismuth and copper mineralisation. Mine production is designed to produce 3.5 Mtpa of ore for a multistream processing plant – The mine is a leading global producer of tungsten and acid-grade fluorspar. The site is a Fly-in / Fly out operation employing over 2,000 employees, contractors and local personnel.
Nui Phao contracted the expert services of IMR to perform coinciding six mill shutdown over a stringent period of four consecutive days. The Reline was scheduled to be performed in line with alternative contractors as a part of a site wide shut down for maintenance – however, the reline was deemed the critical path to all other shutdown services taking place. As the mill liners and mill installation had been completed by our personnel initially since the sites establishment, the technically skilled and experienced team were aware of mechanical specifications, site complications and possible risks involved. The prior knowledge of the site and technical skills of the IMR team ensured they had a strategic approach implemented for the challenging task ahead.
Following a site conducted assessment of the mills, anticipated scope details were advised to the IMR team for consult and calculated project timeframes. However, upon inspection of the mills on set-up commencement, it was identified that additional works would need to be completed to extend the life of the mills until the next scheduled maintenance, ensuring the clients processing downtimes were minimized and on track for their processing projections. Our personnel were able to identify, plan, and implement a design solution within twenty-four hours of full inspection to ensure the mill would meet the next maintenance shutdown, as the original scope would have the mills worn before this period.
Once established, and all involved contractors, site representatives and IMR employees were informed of the change in scope, the reline commenced without hesitation. A team of 16 thoroughly trained and experienced personnel were on the ground as a part of the reline works across the six mills over a 24 hour operating schedule. The reline works involved over 1200 parts to be changed out, which attributed to the following successfully completed scope: