Objectives

The primary objective is to fully refurbish the shipwright workshop hopper assembly unit by restoring its mechanical, electrical, and structural components to optimal working condition. This upgrade aims to improve operational efficiency, enhance workplace safety through effective dust extraction, and extend the service life of critical workshop equipment.

Scope of Work

The project involves the following core activities:

• Remove, repair, and reconfigure a 15kW, 380V, 4-pole electric fan motor.
• Remove and replace plummer blocks, bearings, pulleys, V-belts, and the impeller shaft.
• Remove, fabricate, galvanise, and install a new discharge flap on the hopper bin.
• Replace the winch cable and winch assembly controlling the discharge flap.
• Conduct internal de-dusting and clean or repair the suction piping within the workshop.
• Repair or replace the 380V circuit breaker isolation system and MTE stop/start lockout switch for the dust extraction unit.
• Repair or replace the Telemecanique isolator and stop/start lockout switches.

Technical Requirements

Tenderers must satisfy the following regulatory and qualification criteria:

• CIDB contractor grading of 1ME or 1GB, or higher.
• Active registration and approval on the Central Supplier Database (CSD).
• Verified tax compliance status.
• Valid CIDB registration accompanied by a current Certificate of Compliance.
• Compliance with all applicable industrial safety and engineering standards.

Key Terminology & Components

• CIDB Grading (1ME/1GB): The Construction Industry Development Board classification system. 1ME covers Mechanical Engineering works, while 1GB covers General Building works. Both denote a minimum project value capacity of approximately R1 million.
• CSD Approved: Official registration on the South African government's central procurement database, mandatory for all state tenders.
• MTE & Telemecanique Switches: Industrial electrical control hardware. MTE refers to motor protection and switching devices, while Telemecanique (now part of Schneider Electric) manufactures heavy-duty isolators and lockout switches used in machinery safety interlocks.
• Plummer Blocks & Impeller Shaft: Precision bearing housings and rotating drive components essential for fan/motor alignment and vibration control.

Skills Requirements

Only contractors demonstrating proven trade qualifications and hands-on experience in industrial refurbishment may apply. Bidders must possess certified artisans capable of executing mechanical disassembly/reassembly, electrical control system repairs, metal fabrication, galvanisation, and ductwork maintenance. All personnel must operate within the legally regulated frameworks of their respective trades, adhering to strict occupational health, safety, and quality assurance protocols throughout the refurbishment process.