The Engen Duncan – Tank Upgrades project involved replacing outdated storage tanks with advanced, compliant systems to improve the fuel station’s efficiency and safety. Theta Projects was responsible for managing the removal of old tanks, installing new, high-capacity storage tanks, and ensuring the entire process adhered to industry regulations.

ENGEN
Fuel Tanks Upgrade
9 December 2024
At Engen Duncan, Theta Projects managed the replacement of aging fuel storage tanks with modern, high-capacity systems. The work involved careful coordination to safely remove the old tanks, install advanced replacements, and ensure all safety and regulatory standards were met. By focusing on precision and efficiency, Theta Projects delivered a seamless upgrade process that minimised downtime while enhancing the station’s operational capabilities and environmental compliance.
Theta Projects managed the Engen Duncan tank upgrade from decommissioning through to operational handover, coordinating the specialist contractors, safety requirements, testing and regulatory inspections that the works depended on.
The upgrade enhanced the station’s operational reliability, reduced environmental risks, and positioned the site for long-term success.
Theta Projects was appointed:

The existing storage tanks were decommissioned and safely removed, with degassing, cleaning, lifting and disposal coordinated to protect the site, the forecourt and the surrounding environment throughout the process.

New high-capacity double-walled tanks were installed for enhanced protection, with tank pit preparation, bedding, anchoring, backfill and reinstatement coordinated around the station’s operating requirements.

Safety and compliance checks were carried out through each stage of the works, covering excavation, hot-work controls, PPE requirements, site access and the industry regulations applicable to fuel storage installations.
Advanced leak detection was integrated with the new tanks and product lines, reducing environmental risk and giving the site continuous monitoring of the upgraded fuel storage installation.

Final regulatory inspections were coordinated with the relevant authorities and the client, with documentation prepared so the upgraded installation could be signed off against the required standards.

Thorough operational testing was performed before handover, including pressure testing, dispenser checks and system verification, so the station could return to trade with minimal downtime.
The Engen Duncan – Tank Upgrades project highlights Theta Projects’ expertise in delivering precise, compliant, and efficient fuel system solutions. By upgrading the station’s storage tanks, we ensured long-term operational safety and efficiency for the client.
Theta Projects’ attention to detail, seamless execution, and commitment to regulatory standards provide exceptional value to clients, making us the trusted partner for critical infrastructure upgrades.

Are you planning a new fuel station, a multi-tenant convenience centre or a complex fuel-retail development in Gauteng?
THETA Projects provides architecture, project management, quantity surveying and service station construction coordination for developments that need fuel infrastructure, tenant workstreams, approvals and construction delivery to move forward together.
The upgraded installation returned to service in December 2024, with new high-capacity tanks, integrated leak detection and full compliance documentation in place.
The project required alignment between the client, the fuel brand, tank specialists, safety consultants, testing authorities and the regulators responsible for final sign-off.
For fuel station owners, the lesson is straightforward: the risk in a tank upgrade is not only in the excavation and installation. The risk is in the interfaces between decommissioning, compliance and returning the site to trade.
Theta Projects’ role was to manage those interfaces, track the programme, coordinate the technical inputs, support the approval process, and carry the project through to handover.