Before investing in a turbine monitoring and control solution, it’s important to have the right testing protocols in place to ensure full synergy between the system and your operational needs. Read on to find out more.
Before you can define a testing framework, you will need to analyse the operating conditions and requirements of the application environment. These can vary from sector to sector. In the power generation industry, for instance, you’ll need to monitor parameters such as turbine shaft vibration, thrust position, and overspeed to mitigate the risk of mechanical failure and optimise performance.
Your testing protocol should be able to address factors such as load cycles and thermal stresses that influence equipment performance. In the oil and gas sector, on the other hand, you may need to focus more on the integrity of critical rotating machinery used in pumps, compressors, and turbines, ensuring adequate resistance to harsh environmental conditions.
The following are primary parameters to monitor in high performing systems:
Shaft eccentricity – detects rotor bow or thermal distortion during startup and shutdown.
Differential expansion – measures the relative thermal growth between the rotor and casing to prevent contact or rubbing.
Casing expansion – monitors turbine casing growth under thermal load to maintain alignment and avoid structural stress.
Valve position – tracks critical steam or fuel control valve movement to ensure accurate turbine control and prevent overspeed.
Absolute shaft vibration – measures casing-mounted vibration levels to capture structural resonance issues and machine health trends.
Relative shaft vibration / shaft position – detects shaft movement relative to the bearing, identifying misalignment, rubs, and bearing wear.
Thrust wear / axial position – monitors axial shaft displacement to protect thrust bearings and prevent dangerous axial loading.
Reverse rotation detection – provides protection against reverse turning during coast-down or abnormal operating states.
Speed measurement – ensures accurate overspeed protection and supports reliable speed control.
A reliable benchmark for turbine monitoring and control competency is API 670 compliance. Systems meeting API 670 standards adhere to rigorous guidelines covering vibration monitoring, axial position, and overspeed measurements—ensuring high accuracy and safety.
For overspeed protection, choose a system offering redundancy and continuous self-checking diagnostics. Compliance with IEC 61508 (SIL) further validates system reliability. At Sensonics, for instance, our SIL 3 performance-tested overspeed systems detect and respond to deviations within milliseconds.
A structured testing strategy ensures that your monitoring systems perform effectively under all operating conditions. A robust plan typically includes:
1. Functional testing
Verify sensor accuracy, calibration, and sensitivity. Simulated vibration tests can validate responsiveness and ensure clean, noise-free signal transmission.
2. Simulation of real-world conditions
Create virtual or physical simulation environments to recreate operational stresses. Use vibration simulators to replicate turbine dynamics and introduce controlled overspeed events to confirm protection system reliability.
3. Integration testing
Validate that data from multiple sensors is correctly processed and visualised on the HMI. Ensure alarm thresholds are functioning and that alerts are raised consistently for deviations.
Long-term turbine reliability and plant safety depend on monitoring systems that can evolve alongside your operational demands. As assets age, loads change, and compliance requirements tighten, a scalable monitoring architecture ensures you are not constrained by the limitations of legacy systems.
Condition monitoring platforms such as SentryCMS are designed to grow with your plant. By integrating speed, position, vibration, and protection signals into a single, flexible framework, operators gain greater visibility, improved diagnostics, and the ability to expand monitoring coverage as new equipment and measurement points are added.
Sensonics provides high-performance turbine supervisory and seismic protection for the power generation, nuclear, and oil and gas sectors. To discuss how our systems can support your testing, protection, and long-term monitoring requirements, please contact one of our experienced engineers today by clicking here.