One strike on a stack, a feeder or an unshielded control cable can trip the station, burn out electronics and leave the pit dark while spares travel. That is lost tonnes, emergency freight and a safety risk for every crew underground when the fans stop.
USP&E as Your Guide Through Storm Season
We understand that you cannot postpone a storm or ask the mill to wait. USP&E has guided energy projects in 85+ countries, and our 400+ engineers and project managers have protected plant on remote concessions where the next technician is a long drive away. We work under ISO 9001 and ISO 45001 systems with FCPA and OFAC controls. USP&E is a full-service EPC and O&M contractor, not a broker.
Turn Your Storm Season Into an Engineering File
Start your lightning protection plan with your own facts, not habit: local strike density, the height of stacks and inlet houses, the length of overhead lines into the pit and the location of every control panel. A rolling sphere or protection-angle study then shows where air terminals and down-conductors belong, and which structures sit inside the protected zone without extra hardware.
Your lightning boundary also has to reach beyond the turbine hall. Conveyor drives, pump stations, camp feeders and radio masts often share earth paths with the generation yard. If those paths are not mapped and bonded, a strike on a distant mast can still travel back into protection relays and trip gas turbine generators that were never hit directly.
Earthing, Bonding and Surge Devices That Actually Work
A good earth grid is the quiet hero of your storm season. Measure soil resistivity in the dry and wet months, design the grid for step and touch potential, and bond every skid, enclosure, cable tray and fence into one equipotential system. Test earth resistance at commissioning and again before each rainy season, because laterite and rocky ground change with moisture.
The surge protection devices on your power, instrument and communication circuits need a schedule: type, location and inspection interval. A spent device gives no warning until the next strike passes straight through it. Running fibre between the turbine hall and the control room removes one of the most common routes for surges into your controls, so you avoid a whole class of storm damage on the copper you have today.
Bridge Units, Engines and Your Future FX-45 Block
If you bring in a remanufactured GE Frame 6B as a bridge while the mine expands, review the enclosure bonding, the age of control-system surge protection and how the package will be earthed on its new foundation. Natural gas engines that carry camp loads or auxiliaries need the same discipline, or the bridge becomes your weakest point in the first storm.
Reserve shielded cable corridors, extra air-terminal positions and earth-grid extensions now so later blocks bond in without digging up phase one. The planning reference is the modular FX-45 (45 MW OCGT or 108 MW CCGT in a 2×1, 50 or 60 Hz), with capacity slots from 2028. If your concession later hosts compute loads, data-centre power plants can follow the same protected layout you built for the mine under EPC and O&M.
Why owners choose USP&E
USP&E is a full-service engineering, EPC and O&M company, not a broker. One team designs, builds and runs your plant, so nothing falls between contracts.
Proof from recent work
Mining · Tanzania
Perseus Mining, Nyanzaga Gold Project
USP&E supplied 28 Cummins KTA50 containerised gensets for the Nyanzaga Gold Project in Tanzania.
Mining · Mali
Barrick Gold, Loulo-Gounkoto
USP&E refurbished the 104 MW power station, rebuilding more than 80 MW of Caterpillar CM32 engines and adding new zero-hour capacity.
O&M · Mali
Power plant recovery, Mali
USP&E took over a 100+ MW plant of 15 Caterpillar CM32 engines, restored availability to about 95% and cut maintenance cost per engine by 66%.
Your path from first call to reliable power
Your 3-step plan: 1. Send your strike records, layout drawings and outage costs under NDA. 2. Get an engineered protection, earthing and equipment option set. 3. Install, test before the rains and hand over to accountable O&M.
- Collect local strike records, stack and building heights, overhead line lengths, and outage costs for the mine and its gas turbine generators.
- Compare a remanufactured GE Frame 6B, verified used or new gas turbines, natural gas engines, and a future modular block against the lightning matrix.
- Review equipment in USP&E live inventory and request records, enclosure bonding details, controls status, and logistics dimensions.
- Reserve earth-grid extensions, shielded cable corridors, and terminal positions for the modular FX-45 (45 MW OCGT or 108 MW CCGT in a 2×1, 50 or 60 Hz), with capacity slots from 2028.
- Document the surge device schedule, inspection intervals, storm procedure, alarm logging, spares, and O&M owners in one matrix.
- Complete permits, funding, fuel agreements, earth-resistance testing, and storm-season drills before final equipment selection.
Common questions
Why does lightning protection matter so much for mining gas turbines?
USP&E treats lightning as a production risk because a mine station usually stands on exposed ground with long overhead feeders. A single strike can trip your turbines, damage control cards and black out the process plant, and on a remote concession the spares and specialists needed to restart can take days to arrive.
Can a remanufactured GE Frame 6B be made storm-ready for a mine?
USP&E reviews a remanufactured GE Frame 6B for storm duty by checking enclosure bonding, control-system surge protection, cable entries and the earthing design for its new foundation. With those items corrected and tested, the unit can work as a reliable bridge, but it is selected on evidence rather than nameplate data.
Where are USP&E’s offices that support African mining power projects?
USP&E supports African mines from its Executive HQ in Johannesburg and its Cape Town office, which handle engineering, project controls and commissioning support. London structures finance, Colorado Springs and Knoxville reach US equipment supply, and Wuxi covers China manufacturing, while site teams travel across the 85+ countries USP&E has guided.
Has USP&E delivered mining power projects in Africa before?
USP&E has delivered mining power across Africa, including supplying 28 Cummins KTA50 containerised diesel gensets, 1,275 kVA each, for Perseus Mining’s Nyanzaga Gold Project in Tanzania. Public case studies also cover the Kinross Tasiast backup station in Mauritania and the Golden Pride controls upgrade for Resolute Mining in Tanzania.
Is USP&E a broker or an equipment trader?
USP&E is not a broker. USP&E is a full-service EPC and O&M contractor that designs, supplies, installs, commissions and operates power stations, so the team that specifies your earthing and surge protection is the same team accountable when the first storm of the season rolls over the pit.
How fast can USP&E respond to a mine power or storm-damage request?
USP&E begins reviewing as soon as you share strike history, single-line diagrams and outage records. Engineers in Johannesburg assess the protection case while project teams check spares and logistics, and the real timeline then depends on site access, equipment availability and permits rather than on a sales queue.
Do natural gas engines need the same surge protection as turbines?
USP&E applies the same surge discipline to natural gas engines and turbines because both rely on sensitive electronic controls. Engines that carry camp loads or black-start duty are often installed later and bonded poorly, so they need equal earthing, surge devices and inspection intervals within one shared maintenance schedule.
What should mining O&M check after a lightning storm?
USP&E recommends that mining O&M teams log every alarm after a strike, inspect surge device indicators, check bonding straps and test any card that reported faults. Pre-starting a standby unit when a storm approaches and following a written load-shed list keeps your process plant running while your team locates the damage.
Facing a power challenge in Africa?
Tell us your load, fuel and timeline. An engineer will come back with options, not a sales pitch.