Precious Opusunju

Results-driven Mechanical Engineer with over 12 years of progressive experience in rotating and static equipment maintenance, reliability engineering, and plant operations across oil and gas, refining, and manufacturing industries. Specialist in Reliability-Centered Maintenance (RCM), Failure Mode and Effects Analysis (FMEA), vibration analysis, infrared thermography, ultrasound testing, and oil analysis. Proven track record in installation, commissioning, troubleshooting, and performance optimisation of centrifugal pumps, reciprocating pumps, compressors, turbines, heat exchangers, and piping systems.

Consistently delivers improved plant reliability, reduced unplanned downtime, and safe, compliant operations in high-pressure industrial environments. Recognised as Best Staff of the Year for outstanding contribution to rotating equipment reliability and operational excellence.

Mechanical Technician at Mikano International Ltd (2023-05 – Present)

• Rotating Equipment Leadership: Lead maintenance and operation of injection moulding and high-pressure pump systems in a fast-paced manufacturing environment, ensuring continuous production availability and minimal unplanned downtime.
• RCM & FMEA Implementation: Applied Reliability-Centred Maintenance principles and Failure Mode and Effects Analysis to identify potential failure modes, optimise preventive maintenance schedules, and extend equipment service life.
• Condition Monitoring: Conducted infrared thermography and oil analysis to detect early-stage wear, lubrication deficiencies, and thermal anomalies — enabling proactive maintenance interventions before equipment failure.
• Start-up & Performance Monitoring: Managed start-up sequences and continuous performance monitoring of production pumps and hydraulic systems, maintaining output parameters within specified operating ranges.
• Predictive Maintenance: Supported vibration and ultrasound inspection programmes to improve rotating equipment reliability and systematically reduce unplanned downtime across the production floor.
• Recognition: Awarded Best Staff of the Year — Injection Moulding Department, in recognition of outstanding contribution to equipment reliability and operational performance.

Machine Technician / Operator at DNDN Resources and Investment Company Ltd (2021-02 – 2022-05)

• Equipment Operations Supervision: Supervised rotating equipment operations ensuring full compliance with mechanical and process specifications, contributing to consistent production quality and safety standards.
• Precision Alignment & Balancing: Executed shaft and gear alignment and balancing using laser alignment tools, achieving precision installation standards that minimised vibration, bearing wear, and seal failures.
• Condition Monitoring Programme: Applied vibration monitoring and oil analysis techniques to assess rotating equipment health, enhancing uptime and providing data-driven input to maintenance planning decisions.
• Troubleshooting & Optimisation: Collaborated with maintenance teams to troubleshoot rotating machinery faults, reducing mean time to repair and improving overall equipment effectiveness across the facility.

Field Technician at BTA Engineering Services Ltd (2013-07 – 2019-12)

• Lube Oil Flushing: Conducted lube oil flushing on turbine and compressor lines to achieve required ISO cleanliness levels prior to commissioning — protecting critical rotating equipment from contamination-related failures.
• Installation & Commissioning: Performed installation, commissioning, and hydrotesting of centrifugal pumps, air fin coolers, and heat exchangers across multiple oil and gas project sites, ensuring first-time-right commissioning outcomes.
• Predictive Maintenance: Implemented predictive maintenance programmes including vibration analysis and thermography on rotating equipment, identifying developing faults before they resulted in unplanned shutdowns.
• API & OEM Compliance: Participated in inspection and maintenance of rotating elements in strict compliance with API standards and OEM specifications, maintaining equipment integrity and warranty validity.
• Technical Documentation: Prepared technical reports and maintenance documentation supporting reliability improvement programmes and providing engineering evidence for management decision-making.

Warehouse Inventory Manager at Port Harcourt Refining Company (PHRC) (2012-06 – 2012-12)

• Spares Management: Oversaw inventory and material management for mechanical equipment and spare parts, applying critical spares identification principles to ensure availability of essential rotating and static equipment components.
• Maintenance Logistics: Coordinated maintenance support logistics and reporting for refinery operations, providing timely material supply to maintenance teams and minimising production impact from spare parts shortfalls.

Mechanical Engineering Intern at Port Harcourt Refining Company (PHRC) — SIWES (2006-06 – 2006-12)

• Pump Alignment: Performed shaft alignment on centrifugal pumps using dial indicator and shims, achieving precision alignment tolerances under supervision of senior mechanical engineers.
• Equipment Overhaul: Participated in overhaul of pumps and compressors, performing clearance checks, bearing replacements, seal changes, and lubrication procedures in accordance with OEM specifications.
• Shutdown Maintenance: Assisted in inspection and troubleshooting of rotating equipment during planned shutdown maintenance, gaining foundational skills in mechanical maintenance at a major refinery facility.

Bachelor of Technology (B.Tech) in Mechanical Engineering – Rivers State University (2011)