Raphael Mayaba

Reliability and Condition Monitoring Responsibilities

• Identified and resolved problems through root cause analysis and research.
• Performed system analysis, documentation and recommend improvement actions.
• Recommended process improvements to continually identify, analyze and fix constraints and challenges.
• Queried and validated downtime entries in RtDuet for information needed for Engineering daily and quarterly pareto analysis report processing.
• Perform visual and physical mill liner wear inspection and performance monitoring in order to forecast mill relines and shutdown planning.
• Collect wear measurements of crusher and mill liners with the 3D scanner and ultrasonic thickness testing.
• Collect vibration measurements and perform data analysis to ascertain equipment health condition for rotating equipment.
• Perform non-destructing testing on construction and plant equipment components such as Magnetic particle inspection, penetrant testing and ultrasonic testing.
• Carry out thermography inspection on electrical substations, overhead power lines, and mechanical rotating equipment.
• Coordinate collection of oil samples from rotating equipment, interpret results in relation to vibration analysis and provide sound guidance on maintenance actions.
• Perform shaft laser alignment and in-situ dynamic balancing on rotating equipment.
• Perform wear monitoring and maintenance repair of mill discharge pump, cyclone cluster components, apron feeder and feed conveyor chutes.
• Identify critical plant equipment for consideration of online monitoring systems installation.
• Participate in profile design and operation improvements of mill and chute liners.
• Organise and lead reline presentation and discussion meetings.
• Maintain working relationship with the suppliers and constantly engage them for technical solutions to improve equipment reliability and availability.
• Generate and compile technical reports with clear recommendations for maintenance and improvement actions implementation.
• Participate and conduct root cause failure analysis
• Maintain condition monitoring data base and ensure integrity of portable and online condition monitoring instruments.

Mechanical Maintenance Responsibilities

• Replacement of worn parts for Krebs and KSB cyclone feed pumps.
• Maintenance of mill and crusher hydraulic system.
• Installation of mill liners and chute repairs.
• Maintenance of reduction gearboxes and conveyor pully.

Field Sales Support Specialist, 01/18- 09/19

SKF Zambia Ltd- Kitwe

• Managed customer accounts, responding to inquiries and resolving customer services issues.
• Contributed to cultivate and maintain business relations by handling customer needs professionally.
• Assisted customers with sales needs such as inventory and shipping inquiries.
• Identified new business opportunities through cold calling, networking, marketing and prospective database leads.
• Kept detailed records of daily activities through online customer database.
• Quoted prices, credit terms and other bid specifications.
• Developed, maintained and utilized diverse client base.
• Met existing customers to review current services and expand sales opportunities.
• Gained customer trust and confidence by demonstrating compelling, persuasive and composed professional demeanor.
• Compiled weekly, monthly and annal sales activities

Condition Monitoring Technician, 01/14- 01/18

• Performed job safety analysis by attending safety meetings and customer sites before work and observing all safety regulations.
• Serviced underground pump chamber 10 stage sulzer pumps through vibration analysis, thermography imaging and shaft laser alignment.
• Performed vibration and thermography tests and analysis on underground supply air compressors, mills, and other rotating equipment.
• Performed shaft laser alignment on gear mills, pumps and gearboxes.
• Compiled weekly and monthly inspection summary reports.
• Complied technical reports aimed at enhancing equipment health condition.
• Provided expert recommendations on bearing application and maintenance to customers.
• Participated in root cause failure analysis to support the asset management team.

• Used hoisting and rigging equipment to move heavy machinery and equipment.
• Replaced defective parts of machines and adjusted clearances and alignment of moving parts.
• Adhered to all workplace safety policies, regulations and compliances.
• Made repairs and modified equipment by welding, soldering and brazing to avoid production delays.
• Maintained good house keeping of the work environment
• Conducted daily inspections of equipment and operating systems on a regular basis, and report to anomalies.
• Performed troubleshooting and tests on plant equipment
• Performed installation, maintenance and repair of systems, machines and equipment while following the relevant safety measures.