Tender Summary: Major Service to Boiler No. 2

Objectives

The primary objective is to appoint a qualified contractor to deliver a comprehensive twelve-month maintenance, inspection, and servicing contract for Coal-fired Boiler No. 2 at Madadeni Hospital. The contract aims to guarantee operational safety, regulatory compliance, and optimal boiler efficiency throughout the service period.

Scope of Work

The scope covers a complete annual service cycle, including:

• Complete boiler isolation, draining, cooling, and preparation.
• Removal, transport, overhaul, and pressure-testing of all safety valves.
• Inspection and servicing of instrumentation, control panels, water feed pumps, and combustion controls.
• Cleaning and inspection of the boiler shell, flue, fire tubes, refractory, fire doors, and chimney stack.
• Maintenance of the chain grate stoker, ignition arch, ash pit, coal hoppers, and drive mechanisms.
• Service and alignment of Induced Draft (ID) and Forced Draft (FD) fans, soot blowers, and associated dampers.
• External inspection, commissioning, and rigorous testing of all automatic and manual safety protections.
• Site cleanup, rubble disposal, and proper handling of replaced components.

Technical Requirements

Bidders must submit a detailed method statement compliant with SANS 1004, outlining safety protocols, draining procedures, cleaning techniques, hydrostatic testing, safety valve calibration, and commissioning sequences. Key technical mandates include:

• Valve overhauls must be supported by photographic evidence, technical condition reports, and pressure testing at 1.25 times the boiler’s design pressure.
• Strict adherence to OEM (Original Equipment Manufacturer) specifications for all valve components.
• Use of specified materials, such as Klingerite steel-reinforced gaskets coated with graphite powder.
• Demonstrated capability to test and calibrate EPBs, motor overloads, and dual-mode (auto/manual) operational sequences.
• All replaced or removed parts must be logged and approved by hospital engineering staff before leaving the premises.

Skills and Qualification Requirements

Contractors must satisfy mandatory administrative criteria and achieve a minimum functionality score of 70 out of 100 points. Required qualifications and documentation include:

• CIDB Grading 1ME or higher in Mechanical Engineering.
• Certified Trade Test Certificate for Mechanical Fitters.
• Valid Department of Employment and Labour registration as a Pressure Equipment Repairer (PER).
• A lead Boilermaker Artisan holding a Red Seal trade test certificate, accompanied by a CV and ID copy.
• An assistant technician with verifiable boiler experience.
• COIDA Letter of Good Standing, BBBEE verification certificate, CSD/MAAA registration, and SARS PIN.
• At least three signed reference letters confirming prior boiler servicing experience in hospital or industrial environments within the last five years.

Explanation of Unusual or Complicated Terms

• SANS 1004: The South African National Standard governing the design, installation, operation, and maintenance of steam boilers and unfired pressure vessels. Compliance ensures legal and safety adherence.
• Pressure Equipment Repairer (PER): A statutory registration with the Department of Employment and Labour legally required to perform repairs or modifications on pressurized systems like boilers.
• OEM Parts Only: A strict procurement clause mandating Original Equipment Manufacturer components for critical safety valves, preventing unauthorized substitutions that could compromise system integrity.
• Chief Artisan/Engineer Witnessing: A governance requirement where hospital engineering leadership must physically verify and sign off on critical procedures, including valve removal, workshop overhauls, and final commissioning.
• 80/20 Preference Point System: A preferential procurement model allocating 80% of evaluation points to price competitiveness and 20% to socio-economic goals, specifically prioritizing South African-owned enterprises.