TURBOSERV

Air separation unit control systems

We design air separation unit control systems: PLC and SCADA software, interlocks and emergency shutdown on Russian and international platforms.

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Illustration of an air separation cold box with external stairs and vessels at its base

Air separation unit control

An air separation unit produces oxygen, nitrogen and argon from atmospheric air. Its control system connects process equipment, controllers and operator workstations, from air preparation to cryogenic separation and product delivery.

We develop control systems based on manufacturer documentation and site requirements. We agree the signal list, architecture, control algorithms, interlocks and scope of emergency shutdown work.

What the control system includes

  • Controller and operator workstation application software
  • SCADA screens, trends, alarms and diagnostics
  • Unit start-up and shutdown assistant
  • Purification unit sequence in automatic, step-by-step and manual modes
  • Interlocks, protections and emergency shutdown logic according to the design
  • Data exchange with iba PDA monitoring

Our air separation unit projects

For an 85,000 m³/h ASU we designed the control system and developed software on Astra.Regul, including emergency shutdown on Regul R500S. The system passed factory acceptance tests.

For a 68,000 m³/h ASU, we developed the control system on Siemens S7-1500 in TIA Portal and ran factory acceptance tests. Its software includes a start-up and shutdown assistant and a purification unit sequence. We also developed application software for a 27,000 m³/h ASU control system that is now in operation.

How we work

  1. Initial data

    Review the ASU process, manufacturer documentation, signal list and customer requirements.

  2. Design

    Agree the system architecture, platforms, control algorithms, interlocks and protections.

  3. Software development

    Program controllers and operator workstations and develop operator screens and diagnostics.

  4. Testing and start-up

    Run factory acceptance tests and take part in commissioning within the agreed scope.

FAQ

Can we commission a single stage of ASU work?

Yes. Design, application software development, testing or commissioning can be agreed separately. The input documents and scope are defined before the project starts.

What determines the scope of an ASU control system?

It depends on the process, signal and operator workstation counts, platform, manufacturer documentation and interlock and emergency shutdown requirements. Send an ASU description and specify the work you need.