Oil, Gas & Chemicals
Full-service Construction, Turnarounds and Maintenance solutions for the Oil and Gas Sector
As a business Aurex Constructors has been executing projects in the Oil and Gas sector for several decades. We have taken all our industry experience, expertise, and the lessons learnt to develop innovative Construction, Turnarounds and Maintenance solutions that speak to our customer’s needs. Our team of dedicated experts continues to streamline our systems and processes to ensure an optimised service offering and uncompromised excellence across all oil and gas projects.
What sets Aurex Constructors apart
Full cradle-to-grave service offerings
We offer full cradle-to-grave service offerings from early scope development, detailed planning, and preparation for shut-down activities, site coordination, project execution and more. We are there with our customers every step of the way to ensure project success and performance.
Unparalleled industry experience
Our construction, turnarounds and maintenance teams know this sector and what is expected and necessary when delivering services and solutions. We have successfully serviced all seven petrochemical facilities in South Africa and executed projects on four petrochemical facilities and nine depots across the country. The petrochemical facilities that we have worked on over the past 3 decades include, Natref Refinery in Sasolburg, Sasol Refinery in Secunda and Astron Energy in Cape Town, Sapref (a joint venture between Shell SA Refining and BP Southern Africa), Engen Refinery in Durban, PetroSA (South Africa’s National Oil Company, Shell depots across the country and Sasol One in the Midlands.
Integrated knowledgeable team of experts
We are proud to have highly specialised construction, turnarounds and maintenance teams that have extensive experience working in high risk and high-pressure environments. Our team is not only focused on project success but on the safety of all involved, we do not take any shortcuts.
Our Successful Oil and Gas Portfolio
Service:
NCP Chlorchem 2022 Shutdown
At NCP Chlorchem’s facility in Kempton Park, Aurex Constructors was entrusted with managing a specialised mechanical, electrical, and instrumentation (MEI) Shutdown, ensuring a seamless process that prioritised safety, precision, and efficiency. By minimising operational disruptions, we are reinforcing our reputation as a trusted partner in high-risk industrial environments, delivering reliability where it matters most.
With a strong track record in high-risk industrial environments, Aurex Constructors was selected to lead this shutdown project with a peak workforce of 56 specialists. The project scope encompassed rewiring distribution board (DB) boxes, issuing compliance certificates, and calibrating control and instrumentation equipment to ensure functionality.Additionally, the team was responsible for stripping and boxing components, facilitating a smooth and compliant restart post- shutdown.
The successful completion of the shutdown improved operational reliability at NCP Chlorchem, ensuring compliance with industry regulations while maintaining high safety standards. By minimising downtime the project safeguarded continuous chlorine production, which is essential for national water treatment.
Kempton Park, Gauteng, South Africa
Our Customer
NCP Chlorchem
± R3.6m Contract Value
2022 Completion Date
Service: Construction
HOW Stream Rerouting Project
Lead Contractor: Megchem
Aurex Constructors successfully delivered the High Organic Water (HOW) Stream Rerouting Project at Sasol’s Secunda facility, executing a complex, multi-disciplinary scope that included piping, structural steelwork, scaffolding, civil works, lagging removal, winterisation, and electrical and instrumentation installations.
Every weld, connection, and system was executed with precision and purpose, ensuring the infrastructure’s integrity and long-term reliability.
This strategic initiative enabled Sasol to recover valuable by-products—acetone and methyl ethyl ketone (MEK)—from waste streams, significantly reducing atmospheric emissions and enhancing process efficiency. Aurex approached the project with agility and a deep commitment to excellence, embracing the opportunity to contribute to Sasol’s environmental stewardship and operational advancement.
Completed on time and to the highest standards, the project achieved zero injuries and met all Ready-for-Commissioning (RFC) deadlines. The rerouting solution helped Sasol meet key environmental compliance targets while unlocking new commercial value from previously discarded by-products.
Aurex’s seamless delivery under complex conditions reinforced its reputation for reliability, environmental leadership, and technical excellence in the chemical processing sector.
Sasol Secunda, South Africa
Our Customer
Megchem
6 months Execution Period
Service: Maintenance
Oxygen Maintenance
During 2024, Aurex Constructors played a pivotal role in maintaining Air Liquide’s Oxygen production facilities in Secunda, ensuring operational stability and plant reliability in one of South Africa’s most demanding industrial environments.Through continuous mechanical and turnaround services, Aurex upheld performance standards while adapting to evolving operational priorities.
Operating in a high-pressure setting prone to unexpected breakdowns and rapid scope changes, Aurex sustained momentum across multiple work fronts. The team provided mechanical, piping, welding, and instrumentation services, responding dynamically to operational challenges while maintaining stringent quality and safety standards.
The project culminated in a major shutdown in September 2024, requiring rapid scalability and precision execution under compressed timelines. Aurex’s ability to scale resources and maintain execution discipline under pressure reaffirmed its capability in complex industrial gas maintenance projects.
Aurex’s contribution strengthened plant reliability, improved safety performance and reinforced customer confidence. The successful delivery of this long-duration maintenance program cemented Aurex’s reputation as a trusted partner in the industrial gases sector—consistently delivering results in dynamic, high-risk environments.
Air Liquide on Sasol Refinery, Secunda, South Africa
Our Customer
Air Liquide
Jan – Dec 2024 Execution Period
316 PRA's Completed
575,688.5 Safe Man-hours
Service: Maintenance
Train 2 and 3 Krypton Boost, and STAR Project
Aurex Constructors successfully delivered one of Secunda’s first Krypton Production upgrades, marking a significant milestone in regional gas production. The project enhanced Krypton output and operational stability, enabling improved profitability and efficiency for the customer. Aurex overcame logistical challenges and a late project start, executing a high-intensity multi-project intervention with precision, safety and uncompromising quality.
Operating in a compressed area with complex overlapping workflows, Aurex successfully managed 4 concurrent projects without disrupting operational integrity. The scope included the replacement of sub-cooler units and the execution of a Super Turnaround on Trains 2 and 3.
Strict adherence to engineering standards, real-time execution planning, and seamless coordination allowed Aurex to deliver under high-pressure conditions, reinforcing its credibility and leadership in critical gas processing projects.
This first-of-its-kind-upgrade significantly improved Air Liquide’s ability to maximise Krypton gas production, optimising both efficiency and profitability. The intervention also enhanced overall cold box performance, contributing to long-term stability and operational resilience of the gas processing infrastructure.
Aurex’s technical excellence, agility and problem-solving approach cement its reputation as a key partner in complex gas processing upgrades, driving innovation and operational success at scale.
Air Liquide on Sasol Refinery, Secunda, South Africa
Our Customer
Air Liquide
Oct 2023 – Jun 2024 Execution Period
392,777 Safe Man-hours
Service: Turnarounds/Shutdown
Rectisol Shutdown 2024
The 2024 Rectisol Shutdown was a mission-critical intervention at the core of Sasol’s gas purification operations in Secunda. With a compressed schedule and zero margin for error, Aurex Constructors executed the shutdown with precision, achieving a zero-incident outcome while ensuring operational continuity for one of Sasol’s most essential processing units.
As the main contractor, Aurex managed full-site coordination and mechanical execution across the Rectisol unit. The scope included safe-making, stripping, brushing, hydro testing, and system punching, meticulously performed across 638 tagged items and pressure-related assets.
With 91 equipment work packs and 49 PRA work packs, the shutdown required rigorous planning, real-time responsiveness, and seamless alignment with Sasol’s operational priorities: no leaks, no injuries, and on-time delivery. Aurex’s technical discipline and deep familiarity with the plant’s systems were essential in achieving flawless execution.
The shutdown significantly enhanced the operational integrity of the Rectisol unit, enabling a safe and efficient restart while reinforcing long-term asset reliability. Aurex’s ability to deliver under pressure—safely, on schedule, and to exacting standards—reaffirms its leadership in refinery shutdowns and large-scale mechanical maintenance.
Sasol Secunda, South Africa
Our Customer
Sasol
82, 901 Man Hours
Aug - Sep 2024 Execution Period
Service: Turnarounds/Shutdown, Maintenance
Refining East Mechanical Maintenance Project
For decades, Aurex Constructors has been a trusted partner to Sasol, embedded in the ongoing maintenance and optimisation of its refining operations at Secunda. Since 2003, Aurex has delivered critical maintenance and shutdown services, ensuring operational continuity and compliance across Sasol’s refining infrastructure. This enduring collaboration is built on expertise, precision and a commitment to excellence.
Aurex has provided full-scope cold mechanical maintenance, including valve overhauls, blanking, statutory equipment inspections, and pressure testing. The work was carried out across multiple units under live plant conditions, demanding a high degree of technical skills and coordination to ensure safety and efficiency.
With a peak workforce of 721, Aurex executed scheduled and emergency maintenance interventions with agility and discipline, minimising disruptions and optimising plant performance. The ability to adapt to Sasol’s evolving operational requirements demonstrates Aurex’s role as a strategic maintenance provider capable of handling complex and high-compliance industrial environments.
Aurex’s contribution extends beyond maintenance—it was about safeguarding the long-term reliability and efficiency of Sasol’s refining operations. By minimising downtime, maintaining equipment integrity, and responding rapidly to operational demands, Aurex ensured uninterrupted production and regulatory compliance.
Sasol Secunda, South Africa
Our Customer
Sasol
2001 to 2024 Execution Period
Fine Ash Dam
Construction
customer: Sasol Secunda
FT Wax Expansion
Construction, Turnarounds & Maintenance
customer: Sasol
Sox Plant 2
Construction
customer: Astron Cape Town Refinery
Natref Inland Crude Refinery
Turnarounds & Maintenance
customer: Natref Refinery Sasolburg