Jobs at O.K. Isokariari & Sons Nigeria Limited

Job Description

• The Industrial Electrician will beresponsible for installing, maintaining, and repairing electrical systems and components in a constructionenvironment.
• The primary goal is to ensure maximum equipment uptime while adhering to strict safety protocols and Nigerian Electrical Standards. You will handle everything from high-voltage power distribution to delicate PLC (Programmable Logic Controller) systems.

Responsibilities

• Installation & Commissioning: Install, test, and maintain electrical or electronic wiring, equipment, appliances, and fixtures.
• Preventive Maintenance: Perform routine inspections and maintenance on motors, transformers, generators, and control systems to prevent unplanned downtime.
• Troubleshooting: Diagnose malfunctioning systems, apparatus, and components using test equipment and hand tools to locate the cause of a breakdown and correct the problem.
• PLC & Automation: Program, troubleshoot, and repair PLCs and Variable Frequency Drives (VFDs) to ensure automated production lines run efficiently.
• Compliance: Ensure all electrical work meets the National Electrical Code (NEC) and factory-specific safety standards.
• Documentation: Maintain accurate records of all electrical repairs, inspections, and inventory of electrical components.

Requirements

• Education: HND / B.Sc. in Electrical Engineering, or a Trade Test I, II, & III certification.
• Applicant must reside in Port Harcourt.
• Experience: Minimum of 10years of experience as an electrician in a manufacturing or factory environment.
• Technical Proficiency:
  • Deep understanding of 3-phase power systems and motor controls.
  • Ability to read and interpret complex electrical blueprints, schematics, and wiring diagrams.
  • Experience with industrial automation (Siemens, Allen-Bradley, or Schneider Electric systems).
• Tool Usage: Proficiency using digital multimeters, oscilloscopes, megohmmeters, and thermal imaging cameras.

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Job Description

• The Asphalt Plant Mechanic is responsible for the continuous mechanical integrity of the asphalt production facility.
• Your primary focus is to troubleshoot, repair, and maintain heavy industrial machinery, including conveyors, dryers, elevators, and mixing units.
• You will be expected to minimize downtime through rigorous preventive maintenance and rapid emergency repairs in a high-temperature, fast-paced environment.

Responsibilities

• Preventive Maintenance (PM): Execute daily, weekly, and monthly PM schedules. This includes greasing bearings, checking oil levels in gearboxes, and inspecting wear liners.
• Heavy Mechanical Repair: Repair or replace defective parts such as conveyor belts, rollers, chain drives, sprockets, and pugmill paddles.
• Welding & Fabrication: Perform structural repairs and modifications using Arc, MIG, or Oxy-acetylene welding. Fabricate chutes or patches for worn-out steel components.
• Hydraulic & Pneumatic Systems: Maintain and troubleshoot high-pressure hydraulic pumps, cylinders, and pneumatic air compressors used for gate operations.
• Burner & Dryer Maintenance: Inspect and repair the aggregate dryer drum and burner systems to ensure efficient heating and fuel consumption.
• Safety Compliance: Strictly follow Lockout/Tagout (LOTO) procedures and ensure all machine guarding is in place to maintain a zero-accident workplace.

Requirements

• Experience: 4+ years of experience in heavy industrial maintenance. Prior experience specifically with Asphalt Plants (Batch or Drum) or heavy crushing plants is highly preferred.
• Technical Proficiency:
  • Expert-level welding and metal fabrication skills.
  • Deep knowledge of power transmission systems (gearboxes, couplings, and drive chains).
  • Proficiency in reading mechanical drawings and assembly blueprints.
  • Basic understanding of diesel engines (for auxiliary plant equipment).
  • Tool Usage: Skilled in using torque wrenches, dial indicators, hydraulic pullers, and various power tools.

Core Competencies:

• Diagnostic Ability: Can hear a failing bearing or identify a misaligned belt before it causes a total plant shutdown.
• Physical Resilience: Comfortable working at heights (on elevators/silos) and in confined, hot, or dusty spaces.
• Sense of Urgency: Understands that plant downtime translates to massive financial loss and lost paving time.
• Resourcefulness: Ability to perform "field repairs" to keep production moving safely until permanent parts arrive.

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Job Description

• The Concrete Batching Plant Mechanic is responsible for the mechanical upkeep, troubleshooting, and repair of all plant machinery used in the production of ready-mix or pre-cast concrete.
• This includes maintaining mixers (twin-shaft or pan), skip hoists, screw conveyors, and pneumatic systems.
• The goal is to ensure 100% equipment availability and to prevent mechanical failures that could lead to concrete "setting" within the machinery.

Responsibilities
Mixer Maintenance:

• Inspect and replace wear liners, mixing blades, and arms within the central mixer. Ensure the discharge gate operates smoothly and seals tightly to prevent grout leakage.

Conveyor & Feed Systems:

• Maintain aggregate belt conveyors, skip hoists, and cement screw conveyors. Monitor belt tension, track alignment, and replace rollers/idlers as needed.

Pneumatic Systems:

• Troubleshoot and repair air compressors, solenoid valves, and pneumatic cylinders that control the batching gates for aggregates, cement, and water.

Silo Maintenance:

• Inspect cement silos, including pressure relief valves and "aeration" systems (air pads/vibrators) to ensure consistent material flow.

Welding & Hard-Facing:

• Perform routine welding repairs and apply "hard-facing" to high-wear components to extend their lifespan against the abrasive nature of sand and gravel.

Emergency Response:

• Act immediately to resolve mechanical jams or failures during a pour to prevent concrete from hardening inside the mixer or delivery trucks.

Experience:

• 5 years as a mechanic in a Concrete Batching Plant or a heavy industrial environment (e.g., quarries or cement plants).

Technical Proficiency:

• Expert knowledge of heavy-duty gearboxes and drive motors.
• Proficiency in Arc welding and oxy-acetylene cutting.
• Understanding of pneumatic circuits and air-operated equipment.
• Ability to read and follow mechanical assembly drawings and lubrication charts.

Tool Usage:

• Competent with bearing pullers, torque wrenches, and precision measuring tools.