IEC 61069-6:2016

Overview

IEC 61069-6:2016 is an international standard developed by the International Electrotechnical Commission (IEC) focused on industrial-process measurement, control, and automation. This standard specifically addresses the assessment of system operability within basic control systems (BCS). It builds on the foundational concepts outlined in IEC 61069-1 and the methodologies from IEC 61069-2 to provide a comprehensive framework for evaluating a system's operability. As a second edition and technical revision of the 1998 original, IEC 61069-6:2016 reorganizes the material for improved clarity and incorporates insights from IEC TS 62603-1, ensuring a modernized and consistent approach to system operability assessment.

Key Topics

This standard provides a detailed method to assess operability by considering various operability properties and relevant influencing factors:

• Operability Properties:

  • Efficiency: Measures how effectively system operators can perform tasks using the control system.
  • Intuitiveness: Evaluates how easily operators understand and interact with the system.
  • Transparency: Assesses the clarity and availability of information presented to operators.
  • Robustness: Gauges the system’s resilience to disturbances and operator errors.

• Factors Influencing Operability:

  • Industrial process characteristics that impact control system performance.
  • Operator tasks, including frequency and complexity of actions.
  • Control strategies applied within the automation system.
  • Human-machine interface (HMI) design considerations.
  • Workplace environment effects on operator performance.
  • Human factors impacting usability and system interaction.

• Assessment Methodology:

  • Defining Objectives: Establishing the purpose and scope of the operability assessment.
  • Design and Planning: Structuring the assessment program and selecting appropriate evaluation techniques.
  • Execution: Conducting the operability evaluation using analytical and empirical methods.
  • Reporting: Documenting findings, insights, and recommendations for system improvement.

• Evaluation Techniques:

  • Analytical techniques to predict operability outcomes.
  • Empirical methods involving operator feedback and observation.
  • Guidance on choosing suitable techniques tailored to operability factors.

• Supporting Guidance:

  • Checklists for system requirement documents focusing on operability.
  • Examples of assessment items especially concerning human-machine interfaces.
  • Consideration of system life cycle phases relevant to operability.

Applications

IEC 61069-6:2016 is essential for professionals involved in the design, implementation, and evaluation of industrial automation and control systems. Practical applications include:

• Industrial Automation Design: Ensuring control systems incorporate effective operability features to enhance operator performance and safety.
• System Assessment and Certification: Providing a standardized approach for auditing control systems on usability and operational reliability.
• Human-Machine Interface (HMI) Development: Guiding design choices that optimize transparency, intuitiveness, and operator workload.
• Operational Risk Management: Identifying and mitigating operability-related risks stemming from poor interface design or system robustness.
• Training and Procedures: Informing operator training programs by understanding operability constraints and human factors.
• Lifecycle Management: Integrating operability assessments throughout system development and maintenance phases to maintain performance standards.

Implementing IEC 61069-6 helps industrial organizations improve control system handling, reduce errors, and enhance overall process safety and efficiency.

Related Standards

IEC 61069-6:2016 complements other standards within the IEC 61069 series, which focus on evaluation of system properties for system assessment in industrial-process environments, such as:

• IEC 61069-1: General concepts for the evaluation of system properties.
• IEC 61069-2: Methodologies for system assessment.
• IEC TS 62603-1: Detailed evaluation criteria for human-machine interfaces incorporated into this edition.
• Additional IEC standards related to industrial automation and human factors engineering.

Together, these standards form a holistic framework to ensure industrial control systems meet rigorous operability and performance requirements, supporting enhanced automation reliability worldwide.

By adhering to IEC 61069-6:2016, organizations can effectively evaluate and optimize control system operability, bridging technical performance with practical operational needs in industrial automation. This improves operator efficiency, system transparency, and robustness-key drivers of successful industrial process control.