TS 11902-1

TS 11902-1 is a terminology standard for machine safety that defines the concepts used in relation to human physical performance. From its title and scope, it serves as a common language document rather than a design rule or a test procedure, helping readers interpret physical workload, posture, reach, and related performance parameters consistently across the series.

Its stated scope is limited to the terms and definitions used in prEN 1005-2, prEN 1005-3 and prEN 1005-4. In practical technical terms, that means the standard supports the vocabulary behind human-centered machine design and assessment, without itself establishing the detailed calculation methods or acceptance criteria found in the later parts of the series.

Why terminology matters in human physical performance

In general engineering context, human physical performance covers the body’s ability to carry out tasks such as lifting, pushing, pulling, reaching, holding, standing and repetitive movement. In machine safety work, clear definitions are essential because ergonomic assessment depends on shared meanings; if the same parameter is understood differently by different teams, design decisions and risk-reduction measures become inconsistent.

• The standard organizes the terms and definitions that support the related prEN 1005 series.
• It focuses on naming and defining physical-performance concepts and parameters.
• The terminology framework helps users read the later parts of the series in a consistent way.
• This TS 11902-1 edition is withdrawn, but it remains the historical terminology basis for the early EN 1005 family.