Instrument Technician at Oza Holdings

Role Purpose: 

• To maintain, calibrate, troubleshoot, and repair instrumentation and control systems within a coal wash plant,  ensuring optimal plant performance, accuracy of measurement systems, and compliance with safety and operational  standards.

Key Responsibilities: 

Instrumentation Maintenance & Calibration 

• Maintain and calibrate plant instrumentation, including: 
• Belt scales and weighbridges 
• Density meters, flow meters, level and pressure instruments 
• Ensure accurate measurement and reporting of production data 
• Conduct routine inspections and preventative maintenance 

Control Systems & Automation 

• Maintain and troubleshoot: 
• PLC systems (Programmable Logic Controllers) 
• HMI systems (Human Machine Interfaces) 
• SCADA interfaces (where applicable) 
• Assist with control logic fault finding and system optimisation 
• Support plant automation and process improvements 

Electrical & Electronic Systems 

• Maintain and repair: 
• Variable Speed Drives (VSDs) 
• Motor control circuits 
• Plant electronic control panels 
• Diagnose faults in electrical and electronic systems 

Communication & Safety Systems 

• Install, maintain, and troubleshoot: 
• Proximity Detection Systems (PDS) 
• Two-way radio communication systems 
• GPS and telemetry systems (if applicable) 
• Ensure all safety systems are fully operational and compliant 

Fault Finding & Breakdown Support 

• Perform advanced fault finding on plant instrumentation and control systems 
• Respond to breakdowns and minimise plant downtime 
• Conduct root cause analysis and implement corrective actions 

Valves & Pneumatics 

• Maintain and repair: 
• Solenoid valves 
• Pneumatic control systems 
• Ensure proper operation of actuated valves and control loops 

Compliance & Safety 

• Ensure compliance with mining regulations and safety standards 
• Adhere to lock-out and isolation procedures 
• Maintain high housekeeping and safety standards 

Reporting & Documentation 

• Complete maintenance reports, job cards, and calibration records 
• Maintain asset registers and instrument databases 
• Track and report recurring faults and system performance 

Minimum Requirements 
Education 

• National Diploma / N6 / Trade Test in: 
• Instrumentation Engineering OR 
• Electrical Engineering (Process Control / Light Current preferred) 

Experience 

• Minimum 4–6 years’ experience in: 
• Coal processing / wash plant environment 
• Instrumentation and control systems 
• Proven experience with: 
• Belt scales and weighbridges 
• PLCs and HMIs 
• VSDs and plant electronics 
• PDS and radio systems 
• Solenoids and pneumatic systems 
• Technical Skills 
• Strong fault-finding and diagnostic capability 

Knowledge of: 

• PLC programming (advantageous) 
• Instrument calibration procedures 
• Process control systems 
• Electrical schematics and loop diagrams 
• Familiar with test equipment (multimeters, calibrators, communicators) 

Additional Requirements 

• Valid driver’s license 
• Medically fit for mining environment