Objectives

The primary objective of this tender is to appoint a service provider responsible for the maintenance, servicing, testing, commissioning, and ongoing management of ozone water treatment plants at Kirstenbosch National Botanical Garden in Cape Town. The service aims to ensure the reliable operation and optimal performance of the ozone generation and water treatment systems over a period of three years, including the supply of spare parts, technical support, and documentation.

Scope

The scope encompasses:

• Maintenance, servicing, and repair of ozone water treatment plants, including ozone generators, pumps, control devices, and associated infrastructure.
• Testing and commissioning of boreholes and water quality testing in accordance with specified standards.
• Development and provision of schematic plans, operating and maintenance manuals, and training for SANBI personnel.
• Installation, servicing, and maintenance of ozone generation equipment, borehole pumps, and associated electrical and control systems.
• Implementation of health and safety measures, site management, and record-keeping during the contract period.

Technical Requirements

The technical specifications include:

• Ozone generators capable of producing 20–100 grams/hour, suitable for the size of reservoirs.
• Stainless steel pump shafts, impellers, and casings designed for durability and ease of maintenance.
• Double mechanical face seals, stainless steel components, and bearings with a B-10 life of 100,000 hours.
• Control systems including motor control centers for pump and ozone generator operation, with manual and automatic modes.
• Installation of ozone systems and pumps within reservoirs, with proper electrical, chemical, and mechanical protections.
• Development of schematic flow diagrams and comprehensive operating and maintenance manuals.
• Regular testing, calibration, and commissioning of boreholes, pumps, and water quality parameters in line with SANS 1200, SANS 241-1:2015, and WHO standards.
• Adherence to health and safety regulations, including risk assessments, site safety plans, and compliance with the Occupational Health and Safety Act 1993.

Skills and Qualifications Requirements

The tenderer must demonstrate:

• CIDB contractor grading designation of Level 2CE or higher, or capability to register accordingly.
• Proven experience in maintenance, servicing, and installation of ozone water treatment systems and borehole pumps, supported by relevant reference letters and project completion certificates within the last ten years.
• Qualified personnel, including a Senior Technician with at least 5 years of experience in ozone water systems, possessing relevant qualifications and training certificates.
• Capability to provide spare parts, technical support, and emergency repairs, with evidence of reputable suppliers and supply chain capacity.
• Ability to develop detailed maintenance plans, manuals, schematic diagrams, and training programs for SANBI staff.
• Compliance with health and safety standards, including the preparation of comprehensive Health and Safety Plans, risk assessments, and site safety management.