Bathopele Mine Expansion 5
ACTOM Mechanical Equipment completes main vent fan contracts for Bathopele Mine Expansion 5
Leading mining ventilation fans designers, manufacturers and suppliers ACTOM Mechanical Equipment has completed two contracts, totalling over R50-million in value, for extension of the main ventilation fan system at Anglo American Platinum’s Bathopele Mine near Rustenburg in North West Province.
The contracts, awarded by Anglo American Platinum’s project management and design consultants Read, Swatman & Voigt (RSV), were for the mine’s Expansion Phase 5 being developed to gain access to additional ore reserves, aimed at increasing output to 300 KTPM by 2014.
ACTOM Mechanical Equipment won the first contract for the expansion of the Central Shaft mining area in early-2012 against stiff competition from other suppliers.
The turnkey contract, which was completed in mid-2013, involved design, manufacture, supply and installation of a 165 m3/sec capacity centrifugal surface ventilation fan equipped with a high-efficiency Fläkt Woods design backward curved aerofoil section impeller to extract air out of a 3,1 m diameter 60 m deep raise-bore shaft at a pressure 3500 Pa.
“The contract also required us to conduct a computerised fluid dynamics (CFD) analysis to prove the efficiency of the fan design,” said Mike van Oerle, ACTOM Mechanical Equipment’s Product Manager, Mining Fans.
The scope of the contract includes supply and installation of medium and low voltage electrical switchgear and controls, as well as the civils and building of an access road to the site. Local contractors in the vicinity were hired to execute the civils and roadworks portions of the contract.
The larger second contract for expansion of the West Shaft was awarded at the end of 2012 and was completed in May this year. This comprised a bifurcation fan of identical design and capacity as the first to be installed in a 4,5 m diameter and a 62 m depth raise-bore shaft to extract air at a pressure of 3500 Pa.
“This was also a full turnkey contract with the same scope as the first, except that no road was required to be built in that instance,” Van Oerle commented.
All the fans are powered by 800 kW customised UNIBOX motors manufactured by ACTOM Mechanical Equipment’s sister company ACTOM Electrical Machines’ Large Motors business unit.
Chris de Klerk, RSV’s lead engineer on the Bathopele expansion projects, said additional factors that counted in ACTOM Mechanical Equipment’s favour in being selected for the contracts, apart from its bids being competitively priced, were its sound track record on similar vent fan contracts it has executed for Anglo American Platinum in the past and the fact that it offered turnkey solutions in the present contracts and a one-year maintenance contract on all three fans.
“The CFD analyses undertaken by ACTOM Mechanical Equipment as part of these contracts proved their fan designs to be of optimum drift design under the required operating conditions,” De Klerk commented.
“A further advantage of all three fans being identical and sourced from one supplier is that it enables the mine to reduce its critical spares holding to a minimum. In addition, having the two contracts running concurrently resulted in major savings in terms of site establishment and de-establishment costs,” he concluded.
ACTOM (Pty) Ltd is the largest manufacturer, solution provider, repairer and distributor of electro-mechanical equipment in Africa, offering a winning and balanced combination of manufacturing, service, repairs, projects and distribution through its 41 distribution outlets throughout Southern Africa.
ACTOM is also a major local supplier of electrical equipment, services and balance of plant to the renewable energy projects.
It also holds numerous technology, distribution and value added reseller agreements with various partners, both locally and internationally.
For further information contact Craig Johnston, ACTOM Mechanical Equipment
PO Box 1300, Germiston 1400
Tel (011) 878-3029 Fax (011) 878-3002
Press release compiled by Julian Kraft, J Kraft Public Relations
PO Box 2826 Wilropark 1731
Tel (011) 472-6686 Fax 086-613-9657
Date: August 29, 2014
Caption: The bifurcated fan installation at Bathopele Mine’s West Shaft.