Objectives

The primary objective is to ensure the continuous reliability, safety, and operational readiness of standby diesel generators at the facility. This is achieved through structured preventive maintenance, rapid fault resolution, performance validation via load testing, and strict adherence to manufacturer specifications and national quality standards.

Scope of Work

The contract covers comprehensive maintenance services for all standby generators located at the designated hospital. The scope includes:

• Routine Inspections: Weekly monitoring of operational parameters, fluid levels, belts, batteries, and auxiliary systems.
• Scheduled Servicing: Tiered maintenance interventions executed at specific operating hour intervals (240, 480, 720, and 960 hours).
• Emergency Response: Breakdown call-outs, diagnostic troubleshooting, and corrective repairs, which are billed separately from scheduled services.
• Documentation & Reporting: Completion of service checklists, performance logs, and compliance records for each intervention.

Technical Requirements

Bidders must adhere to a detailed, hour-based maintenance protocol that escalates in complexity as runtime increases:

• Weekly Checks: Verify hour meters, fan belts, coolant and oil levels, radiator hoses, battery chargers, jacket water heaters, and perform basic start/load verification. Clean the plant area and record all readings.
• 240-Hour Service: Replace primary fuel filters, bleed the fuel system, inspect turbocharger rotation and seals, replace or clean air filters, adjust fan belt tension, and conduct a 20-minute load test. During load testing, record voltage, amperage, frequency, oil/water temperatures, and pressures. Verify low-pressure and high-temperature safety shut-offs, clean alternator vents, drain fuel tanks, and inspect control panel instruments.
• 480-Hour & 720-Hour Services: Include all 240-hour tasks, plus engine tappet adjustments and replacement of rocker cover gaskets.
• 960-Hour Service: Incorporate all prior tasks, plus draining and refilling the radiator, adding cooling system inhibitor, performing pressure tests on the cooling system and radiator cap (to 150 kPa), inspecting rocker faces and lubrication pathways, and replacing gaskets. Every third 960-hour cycle requires fitting service-exchange injectors and new nozzles calibrated to the engine manufacturer’s atomizing pressure specifications.
• Compliance: All services must meet applicable SABS standards, maintain plant hygiene, and include thorough post-service documentation.

Skills Requirements

While not explicitly itemized, the technical depth of the checklist implies the following competency requirements:

• Qualified mechanical or electrical artisans/engineers with recognized trade certificates or degrees.
• Proven hands-on experience in diesel engine maintenance, fuel system bleeding, and precision valve/tappet adjustment.
• Proficiency in electrical diagnostics, alternator inspection, and safe execution of live load testing procedures.
• Familiarity with industrial safety protocols, pressurized system testing, and environmental handling of fluids and filters.
• Administrative capability to complete mandatory public procurement compliance documentation and maintain accurate service logs.

Explanation of Unusual or Complicated Terms

• Major vs. Minor Service: Minor services refer to routine inspections, fluid top-ups, and filter replacements. Major services involve comprehensive mechanical overhauls, including valve adjustments, gasket replacements, pressure testing, and injector servicing.
• Load Testing: Operating the generator under an electrical load to verify that output parameters (voltage, frequency, temperature, pressure) remain within safe operational limits and that automatic safety cut-offs function correctly.
• Tappets & Rocker Covers: Critical engine valve train components. Tappets control valve clearance, while rocker covers seal the cylinder head. Adjusting tappets ensures proper combustion timing, and replacing rocker cover gaskets prevents oil leaks.
• CSD / B-BBEE / SBD Forms: Standard South African public sector procurement requirements. CSD (Central Supplier Database) verifies supplier registration and tax compliance. B-BBEE (Broad-Based Black Economic Empowerment) and SBD (Standard Bid Document) forms assess transformation status and declare conflicts of interest or state employment connections.