Robert Mufudzi Mavunga
Rustenburg
Overview
30
30
years of professional experience
Work History
Snr Electrical Supervisor
Barrick Gold/Randgold Resources
Loulo, Mali
02.2012 - 01.2025
- Responsible for training, maintenance and repair on equipment in the section comprising surface and underground operations.
- Providing daily and monthly reports on maintenance and service history on the equipment.
- Ensuring a safe equipment and friendly environment, effective engineering standards and reviewing standard operating procedures (SOPs) and following company policies.
- Attending daily production, mine weekly planning and cost meetings.
- Section monthly budget planning, forecasts and weekly reviews and spares min max reviews.
- Updating, sourcing spares and required materials, maintenance of database with information on plant modifications with planners, reports on section of manpower comprising five shifts of artisans and assistances.
- Inspections on plant equipment and machinery for compliance with all company Health, Safety and Environment as well as work permits, risk assessments, policies and standard operating procedures.
- Planning and scheduling current and upcoming projects and working hand in hand with contractors.
- Equipment includes Conveyor System, Crushing Circuits, Stopes Backfill Plants, Refrigeration Plants, Sandvik double boom, 1000Vac electro-hydraulic DD421 Drill rigs, DL421, DU411 Long-hole production and DS421 bolters.
- Part of the team that designed multiple conveyor networks, primary ventilation fans Motor Control Centres.
- Developed detailed scope of works for each specific project that achieved clarity and ensured compliance.
- Conducted investigations and provided solutions to a range of electrical equipment by rebuilding power system reliability projects that improved the integrity of the Power Reticulation.
- Recruited, Coached and mentored a Malian team on all aspects of the electrical facets, which increased capability, team moral and improved efficiency.
- Teams are now capable of handling shifts.
- Team involved in the cost control across all engineering sections, we achieved average 12% year on year savings in engineering spares and operations (Member of Business Unit in house training initiatives for production improvements).
- Team involved in a range of projects to deliver work programs, and ensured delivery is in accordance with approved expenditure, timeframes, quality and safety.
- Yalea Underground Conveyor extensions, Gara Underground new conveyors and crushing circuits, Backfill Plants, Refrigeration Plants and Gold Recovery Plant.
- Carried out quality control audits, change management, and ensured compliance.
Electrician
Glencore Xstrata Alloys
Wonderkop, South Africa
07.2011 - 01.2012
- Company Overview: Wonderkop Smelter is a smelting plant with 6 X15MVA Submerged Arc Furnaces and auxiliary equipment.
- Responsible for maintenance, repairs and responding to breakdowns on the following plant equipment.
- Carrying out all electrical inspections on machinery and equipment to meet company standards.
- Wonderkop Smelter is a smelting plant with 6 X15MVA Submerged Arc Furnaces and auxiliary equipment.
- Team involved in the wagon tippler rebuilt.
- Work orders flow monitoring and closing.
- Mentoring junior artisans and trainee Engineers.
- Conducted investigations into a range of electrical equipment failures and provided solutions to the Electrical Coordinator.
- Made effective decisions on the Installation, repair, replacement, and maintenance of assets under normal and fault conditions that improved the plant integrity.
- A team that implemented MCC maintenance that became a benchmark on all MCCs at the plant.
Lead Electrician
SENET Services International
Bisha, Eritrea
05.2010 - 06.2011
- Responsibilities included construction and maintenance of all electrical switch gear to ensure reliability of plant equipment.
- Performing high voltage (up to and including 22kV) switching operations.
- Coordinating and inspecting all installations (new and modifications) to ensure compliance with standards of quality and safety.
- Installations on agitators, pumps, carbon transfer tanks (CIL), carbon regeneration and acid wash plant.
- Field wiring and cabling, gold room installations of rectifiers (Electro-Winning) and calcine furnaces.
- Motor Control Centre wiring (MCCs).HT (6,9KV & 22KV XLPE cables) terminations and Power lines construction.
- Ball mill, SAG mill, cyclones and thickener installations.
- First gold mine in Eritrea was involved in the mentoring local teams, developing standard operating procedures (SOPs) and maintenance procedures for maintenance for High and Low Voltage Switchgears, panels, isolators and protection circuits.
- Coordinated and inspected all installations and give feedback on corrections to ensure compliance with standards of quality and safety.
- Commissioning of the new CIL process plant.
Electrician
Glencore Xstrata Alloys
Rustenburg, South Africa
09.2009 - 04.2010
- Company Overview: Rustenburg Smelter is a smelting plant with 6 X15MVA Submerged Arc Furnaces and auxiliary equipment.
- Responsible for maintenance, servicing and attending to breakdowns on plant equipment and submerged direct arc furnaces, bag house, crushers, compressors, pump house and crushers.
- Maintenance on Morris cranes, checking variable speed drives (WEG, VSDs), switchgear, slip ring motor brushes, thruster brakes, current collectors, hot rails, limits switches, cam switches and load limiters.
- Inspections on furnace electrodes, on load tap changer 33KV/ 11MVA transformers, diverter switch changing, oil flow pumps, auto trips, oil cooling fans, on load tap changers, bus bar temperatures and daily inspections.
- Carrying out 33KV and 11KV switching on arc furnaces.
- Infrared temperatures on bus bars and bus tubes.
- Hydraulic drills, hydraulic mud guns and cooling pumps maintenance.
- Atlas Copco (MB700) rock breakers servicing and breakdowns, compressors (Atlas Copco) and 11KV (ABB) ID fans, vibrators, conveyor belts, pumps and jaw crushers.
- Monthly earth leakage tests and inspections on all equipment to company policies and standards.
- Rustenburg Smelter is a smelting plant with 6 X15MVA Submerged Arc Furnaces and auxiliary equipment.
- Improved monthly downtimes in the section and voted best Shift Electrician several times.
Electrician
Siemens
Richards Bay, South Africa
01.2009 - 08.2009
- Company Overview: Richards Bay Coal Terminal.
- Installations on conveyors 3,3KV and 550V motor drives, conveyor belt alignment limits, belt tension sensors.
- Safety switches, speed sensors, belt flap sensors, temperature, and vibrations sensors on drives.
- Shuttle conveyors limits and substation installations 11kv and 3.3KV Vacuum Circuit Breakers (VCB s), switchgear protection circuits, remote switching tripping and closing circuits.
- Motor Control Centers (MCCs) wiring S7 Siemens Simatic S7 – 400 PLC and SCADA, Simocode, stacker re-claimer and ship loader conveyor cabling.
- Tandem wagon tipplers electrical and instrumentation installations.
- Richards Bay Coal Terminal.
- Mentoring other Electricians on electrical drawings interpretation, wiring skills and installations.
- A team that successfully carried out shutdown refurbishment of Stacker Reclaimer machine within the scope time and budget.
Electrical Charge Hand
Zim Castings
Gweru, Zimbabwe
10.2007 - 11.2008
- Company Overview: Foundry
- Leading hand in preventive, progressive and planned maintenance of equipment.
- Keeping records of maintenance executions, breakdowns and machinery improvements of overhead cranes, hoists, underground conveyors and rising conveyors, compressors.
- Short blasting machines, sand mills, dye casting machines moulding machines and presses.
- Thyristor controlled induction furnace (3 MGW Vulcan Series), Cupola Furnace and 850KW enameling resistance furnaces.
- 11KV switching and inspections.
- Training apprentices.
- Foundry
- Successfully installed and commissioned 3MW induction furnace.
- Recruited and trained apprentices.
- Developed, modified and improved Standard operating procedures (SOPs) and maintenance procedures for maintenance of MV Switchgears, panels, isolators and protection circuits which was adopted and implemented by maintenance team.
Electrical Technician in Charge
Airforce of Zimbabwe
Gweru, Zimbabwe
05.2004 - 09.2007
- Company Overview: Air Defence
- Key Responsibilities included supervision of construction, maintenance and repairs by contractors.
- Conduct routine and emergency switching up to and including 11Kv and issued safety documents.
- Inspected electrical installations on premises.
- Maintenance of test rigs, ground power units (GPUs) for aircraft servicing, control towers and aircraft runways.
- Standby generators, CAT, Dorman and Lister.
- Alternating voltage regulators (AVRs), starters, batteries, periodic generator servicing.
- Aviation fuel handling station for jet A1 avgas and diesel pumps, flow sensors, temperature sensors, level sensors and metering systems.
- Standby duties.
- Air Defence
- Resuscitated bulk fuel handling facility for JET A1 with pumps and metering system with a contractor.
- Developed and modified power supply for computer box director for anti-aircraft gun.
Electrician/Apprenticeship
High Voltage Construction
Harare, Zimbabwe
02.1995 - 04.2004
- Electrical and Mechanical contracting company involved in installations and maintenance in mines.
- Zimbabwe Platinum Mines (Implats) installation of underground mini substations power reticulations cables up to 11KV.
- Repair of underground trackless machines Tamrock and Sandvik rigs and roof bolters, conveyor belts, compressors, pumps, boomer boxes, gulley stands, trailing cables, ventilation fans, vibrators and underground power reticulations.
- Mimosa Platinum Mines: Installations of 132/11KV substations, 11KV reticulations to underground and concentrator plant.
- Tobacco Processors Zimbabwe: Installations of 11KV substations, Motor Control Centers (MCCs) Modicon PLC panel wiring, ABB, and Schneider Altivar series (VSDs) and Altistart soft starters, Honeywell temperature controllers, moisture meters, conveyors, stackers and hydraulic press machines (Fishburne) and steam boiler installations and maintenance.
- Larfage Cement Company Zimbabwe: Electrical and Instrumentation installations and maintenance on rotary kiln, mills, conveyors, precipitators, preheating stages and packaging plant installations.
- Best apprentice.
- Involved in major mining and heavy industry projects.
Timeline
Snr Electrical Supervisor
Barrick Gold/Randgold Resources
02.2012 - 01.2025
Electrician
Glencore Xstrata Alloys
07.2011 - 01.2012
Lead Electrician
SENET Services International
05.2010 - 06.2011
Electrician
Glencore Xstrata Alloys
09.2009 - 04.2010
Electrician
Siemens
01.2009 - 08.2009
Electrical Charge Hand
Zim Castings
10.2007 - 11.2008
Electrical Technician in Charge
Airforce of Zimbabwe
05.2004 - 09.2007
Electrician/Apprenticeship
High Voltage Construction
02.1995 - 04.2004