Provision of maintenance, repair, and refurbishment activities for four diesel generators and their Automatic Transfer Switches to UNSMIL HQ, Janzour Tripoli Libya.

The United Nations (UN), represented by the UN Mission in Libya (UNSMIL), invites qualified companies to submit an expression of interest for the provision of periodic maintenance program for four diesel generators (two 55kva Perkins-type and two 15kva Lomberdini-type) located at the UNSMIL compound in Tripoli, Libya. The maintenance program is designed to ensure optimal performance, reliability, and longevity of the generators through systematic inspection, testing, and maintenance activities Specific Requirements/Information B. Scope of Works 1. Generator Transportation and Handling 1.1 Pre-Transportation Requirements: - Contractor shall provide qualified technicians to safely disconnect generators from ATS and villa electrical systems - Disconnection must be performed quickly and efficiently to minimize IT equipment shutdown time - All electrical connections must be properly labeled and documented for reconnection 1.2 Transportation Equipment: - Contractor must provide appropriate crane equipment for loading and unloading generators - All lifting equipment must be certified and operated by qualified personnel - Contractor is fully responsible for any damage to compound infrastructure during loading/unloading operations - Any damage caused during transportation operations must be repaired by contractor at no cost to UNSMIL 1.3 Workshop Transportation: - Generators shall be transported one by one to contractor's workshop - Each generator must be securely transported to prevent damage during transit - Contractor responsible for all transportation logistics and permits 2. Workshop-Based Mechanical Works 2.1 Full Engine Overhaul: - Comprehensive mechanical inspection and overhaul including: - Engine diagnostics and repair (fuel system, cooling system, lubrication system, air intake, exhaust system) - Replacement of all worn or faulty mechanical components with original spare parts or equivalent - Fluid changes (oil, coolant) and filter replacements (oil, fuel, air) - Battery testing and replacement if necessary - Vibration analysis to identify and rectify any imbalances or misalignments 2.2 Structural and Frame Work: - Thorough cleaning, rust treatment, and structural repair of generator frame - Sandblasting or chemical treatment to remove all rust - Welding or reinforcement of compromised structural elements - Application of anti- corrosion primer and industrial-grade paint - Time Constraint: Structural work and painting shall not exceed 10 working days per generator 2.3 Soundproofing Replacement/Refurbishment: - Removal of old, rusted soundproofing material - Installation of new, high-quality soundproofing that meets or exceeds original specifications - Proper sealing to prevent future moisture ingress 3. Electrical & Software Works 3.1 Control Panel Software Rectification: - Diagnose and repair/replace control panel software - Reinstallation of original, licensed software or approved equivalent - Calibration and testing of all control functions - Firmware updates if available and necessary 3.2 ATS Maintenance and Repair: - Detailed inspection, maintenance, and repair of ATS units - Cleaning and inspection of contacts, terminals, and wiring - Testing of transfer mechanisms and control circuitry - Replacement of faulty components (contactors, relays) with original or equivalent parts - Verification of seamless power transfer between utility and generator sources 3.3 Electrical System Check: - Comprehensive check of all electrical connections, wiring, and sensors - Testing of all safety systems and alarms - Verification of proper grounding and electrical safety 4. Installation and Commissioning 4.1 Generator Reinstallation: - Safe transportation back to compound after workshop completion - Proper positioning and securing of generators - Reconnection to ATS and villa electrical systems using documented connection procedures 4.2 Testing and Commissioning: - Load bank testing to verify power output and stability - ATS functional testing under simulated power outages - Noise level measurements to confirm effective soundproofing - Final visual inspection and documentation of all completed work.