Objectives

The primary objective is to conduct a thorough inspection and subsequent internal relining of existing cast iron drainage pipework at the Playhouse Company’s premises. This initiative aims to restore hydraulic efficiency, eliminate leaks, mitigate structural degradation, and extend the service life of the drainage network without the need for disruptive and costly full-pipe replacement.

Scope

The project encompasses the complete surveying, assessment, and rehabilitation of the facility’s cast iron drainage system. Key activities include:

• Site preparation and access planning within an operational commercial venue.
• Non-destructive pipeline inspection to identify defects, corrosion, blockages, and structural weaknesses.
• High-pressure cleaning and surface preparation of existing pipework.
• Installation of certified relining materials using approved trenchless methodologies.
• Post-relining quality verification, flow/pressure testing, and comprehensive reporting.
• Reinstatement of any accessed areas and full site clearance upon completion.

Technical Requirements

• Minimum contractor grading of CIDB 1SO or higher.
• Compliance with applicable South African National Standards (SANS) for drainage, plumbing, and construction safety.
• Use of calibrated CCTV inspection equipment and certified relining products/materials.
• Strict adherence to sealing, packaging, and submission protocols specified in the official tender documentation.
• Implementation of comprehensive health, safety, and environmental management plans, particularly for confined space entry and working near active facilities.

Skills Requirements

• Proven experience in inspecting and rehabilitating cast iron drainage infrastructure.
• Certified operators for closed-circuit television (CCTV) pipe inspection and defect mapping.
• Skilled technicians proficient in modern pipe relining techniques and resin curing processes.
• Project management capability to coordinate works with minimal disruption to ongoing business operations.
• Valid trade qualifications, financial stability, and resource allocation capabilities aligned with the required grading level.

Explanation of Specialised Terms

CIDB Grading 1SO: A South African Construction Industry Development Board classification that certifies a contractor’s capacity to deliver complex sewer and drainage projects. The “1” indicates high financial turnover and managerial capability, while “SO” specifically denotes competency in sewer and drainage works. Achieving this grade requires demonstrated project experience, adequate plant and equipment, skilled personnel, and robust financial controls.

Pipe Relining: A trenchless rehabilitation technique where a new structural liner is installed inside existing pipes to restore integrity and flow capacity. Methods typically involve inserting a resin-impregnated tube that expands and cures against the host pipe walls, creating a seamless, corrosion-resistant inner layer without excavation.