Tender Summary

Objectives

The primary objective is to engage a qualified service provider to perform mechanical servicing, electrical testing, and component replacement for a High Tension (HT) circuit breaker at the Phoenix substation. The procurement ensures the continued reliability, safety, and regulatory compliance of critical municipal electrical infrastructure while adhering to public supply chain management policies and preferential procurement targets.

Scope of Work

The contract covers comprehensive maintenance and testing of the Hercules 2 HT breaker. Key deliverables include:

• Mechanical servicing of breaker mechanisms
• Conducting mechanical and electrical tests (including speed and duty cycle measurements)
• Supplying four trip coils
• Locating and repairing gas leaks, if present
• Providing skilled technician labour for testing and recording Change Over Unit (COU) data
• Submitting a final comprehensive test and service report

A compulsory site meeting is required prior to contract execution to align on site-specific procedures and safety protocols.

Technical Requirements

Bidders must meet strict compliance and accreditation standards to qualify for evaluation. Mandatory submissions include:

• Valid Construction Industry Development Board (CIBD) rating of EP 1 and ME 1
• Holding certificate for HV Regulation (ORHVS)
• Documented history of previous HT breaker repairs
• Proof of 132kV HV Circuit Breaker training or CB Maintenance course certification
• Registration with the Central Suppliers Database (CSD) and Municipal Council Database
• Current Tax Compliance Certificate and Letter of Good Standing from the Compensation Fund
• Submission of a Contractor Safety, Health, and Environment (SHE) Risk Management file

All quotations must be completed in black ink. Any price alterations must be manually signed by the bidder; unsigned changes will result in immediate disqualification. Post-submission price increases are strictly prohibited.

Skills Requirements

The executing team must possess specialized high-voltage electrical competencies. Required skills include proficiency in mechanical breaker mechanism overhaul, high-voltage electrical testing protocols, SF6 gas leak detection and repair, and precise documentation of COU test results. Personnel must hold validated 132kV HV circuit breaker training certificates and demonstrate proven field experience in HT breaker maintenance and troubleshooting.

Explanation of Unusual or Complicated Terms

• ORHVS: Offshore/Rural High Voltage Switching certificate, a specialized operational and safety qualification required for working on high-voltage electrical distribution and switching systems.
• COU: Change Over Unit, referring to the standardized testing and recording procedures used when switching electrical network configurations during maintenance or fault isolation.
• CIBD Ratings (EP 1 + ME 1): The Construction Industry Development Board grading system. EP denotes Engineering Procurement and ME denotes Mechanical Engineering; Level 1 indicates foundational industry competency, financial capacity, and project delivery capability.
• CSD: Central Suppliers Database, a mandatory national government registry for all entities seeking to contract with South African public institutions, used for tax compliance and supplier verification.