Tender Summary: Replacement of 15kW Motors

Objectives

The primary objective is to replace two faulty 15kW motors on the hospital’s cooling towers to restore efficient water cooling for the chiller plant, ensuring uninterrupted clinical and operational services.

Scope of Work

• Remove existing 15kW motors and install new units on two designated cooling towers.
• Commission and fully test both cooling towers to verify operational functionality.
• Configure Variable Speed Drives (VSD) to enable seamless communication between the new motors and temperature sensors.
• Install a temperature sensor and digital display unit on Cooling Tower 2.
• Fit new ball valves on both cooling towers.
• Clean the cooling tower fill media for both units.
• Execute all tasks within a seven-day contract period (subject to negotiation) and provide a minimum 90-day performance guarantee.

Technical Requirements

• New motors must be rated at 15kW and specifically compatible with Baltimore Aircoil Company cooling towers (Serial numbers: CO60087 and C060088).
• All supplied materials, components, and fittings must comply with SABS or ISO quality standards.
• Installation must adhere strictly to the attached specification document and standard Government General Conditions of Contract (GCC) and Special Conditions of Contract (SCC).
• Bidders must participate in a compulsory site meeting to inspect the installation environment and confirm technical feasibility.
• Evaluation utilizes an 80/20 preference point system, weighting 80 points on price competitiveness and 20 points on designated socio-economic goals.

Skills and Qualifications Requirements

• Valid CIDB (Construction Industry Development Board) grading certificate, category 1ME for mechanical engineering services.
• SAQCC Gas Registration in Category A, authorizing work on air conditioning, refrigeration, and heat pump systems, including certified gas practitioner status.
• Active Letter of Good Standing under the Compensation for Occupational Injuries and Diseases Act (COIDA).
• Verified registration and compliance on the Central Supplier Database (CSD) with current tax clearance documentation.
• Demonstrated relevant experience through submission of at least one valid order and delivery note from a private or public healthcare facility.
• Skilled artisans and technicians proficient in precision motor replacement, electrical control wiring, VSD programming, and mechanical cooling tower maintenance.

Explanation of Unusual or Complicated Terms

• VSD Configuration: Refers to the programming and integration of Variable Speed Drives, which automatically adjust motor rotational speed based on real-time temperature sensor feedback, optimizing energy consumption and cooling capacity.
• SAQCC Gas Registration (Category A): A mandatory South African certification for professionals handling refrigerants and pressurized gas systems, ensuring safe installation, servicing, and compliance with environmental and safety regulations.
• COIDA Letter of Good Standing: Official proof that a contractor complies with national occupational injury compensation legislation, shielding both employees and the procuring entity from financial liability related to workplace incidents.
• 80/20 Preference Point System: A standardized public procurement scoring model where 80% of the evaluation score is allocated to competitive pricing, and 20% is reserved for socio-economic transformation targets, such as prioritizing South African-owned enterprises.