Overview - ISO 19860:2005 (Gas turbine data acquisition & trend monitoring)
ISO 19860:2005 defines requirements for data-acquisition (DA) and trend-monitoring systems (TMS) used with gas turbine installations and associated systems. The standard classifies monitoring systems, defines essential terms (e.g., PMS, CMS, MMS, VMS, DS), and establishes rules for conversion, normalization and validation of measured quantities so different monitoring solutions can be compared on a consistent basis. ISO 19860 is intended to support reliable performance assessment, condition-based maintenance and informed decision‑making for gas turbine operators and manufacturers.
Key topics and technical requirements
- System classification and definitions: clear definitions for DA, TMS, PMS (performance), CMS/EMS (combustion/emission), MMS/VMS (mechanical/vibration), and DS (diagnosis).
- Data normalization: thermodynamic state variables should be normalized to standard reference conditions (see ISO 3977-2) to enable meaningful trend comparison across operating conditions.
- Validation and scaling: detection, elimination or replacement of erroneous measurements and the use of scaling/validation algorithms to ensure data integrity before trend computation.
- Required ambient/operating inputs: capture of ambient pressure, temperature, humidity, fuel heating value and exhaust-gas pressure loss for correct normalization and trend analysis.
- Trend analysis scope: support for both short-term and long-term trends covering performance (power, efficiency, EGT), emissions, and mechanical behaviour.
- Integration and architecture: guidance on DA as the base component and TMS integration with control systems - benefits (data reuse, faster response) and development/validation trade-offs.
- Informative annexes: examples, diagnostic-system notes and flow charts to support implementation and system comparison.
Practical applications and target users
Who uses ISO 19860:2005:
- Gas turbine OEMs and integrators specifying monitoring capabilities
- Power plant and industrial operators implementing condition‑based maintenance (maintenance-on-condition) and performance tracking
- Controls, instrumentation and TMS vendors designing validated, normalized data systems
- Engineering consultants evaluating retrofit TMS solutions or procurement contracts
Practical benefits:
- Enables consistent performance verification, ageing assessment and fuel/efficiency optimization
- Supports emission reporting and combustion quality monitoring
- Helps predict failures, reduce unplanned outages and optimize maintenance intervals
- Facilitates comparison of commercially available monitoring systems on a common basis
Related standards and notes
- Normative references in ISO 19860: ISO 2314:1989 (acceptance tests), ISO 3977-2:1997 (standard reference conditions and ratings), ISO 13373-1:2002 (vibration condition monitoring).
- ISO 19860 includes informative annexes on system development and diagnostics and notes that certain diagnostic/data‑processing patents are declared (details recorded in the standard).
Keywords: ISO 19860:2005, gas turbine trend monitoring, data acquisition, TMS, condition monitoring, performance monitoring, validation and normalization.