TSE CEN ISO/TS 22475-3

TSE CEN ISO/TS 22475-3 is the technical specification part that addresses third-party conformity assessment of enterprises and personnel in the context of geotechnical investigation, sampling methods, and groundwater measurements. It focuses on how competence can be assessed for organisations and practitioners involved in field work such as sampling and groundwater observation, where technical reliability depends heavily on consistent execution and documented capability.

Conformity assessment in the geotechnical context

Geotechnical investigation helps engineers understand soil and rock conditions for design and construction, while sampling strongly influences the reliability of laboratory testing and in situ interpretation. Groundwater measurements are equally important in excavations, foundations, and earthworks because they affect stability, constructability, and interpretation of ground conditions. In this area, independent third-party assessment of enterprises and personnel is valuable because it supports consistent performance, traceability, and technical confidence in the results. The subject of this document is the competence-assessment framework itself, not the geotechnical design or field operations as such.

What Part 3 indicates

The Part 3 designation shows that this document belongs to a broader series. This listing concerns the conformity assessment framework rather than a sampling method or test procedure. As a technical specification, it is generally used to structure definitions, assessment principles, and competence-related expectations; however, because the detailed clauses are not provided here, no specific test steps, numeric thresholds, or mandatory inspection routines should be assumed from this description.

• Assessment of enterprises working in geotechnical sampling and groundwater measurement
• Evaluation of personnel competence for carrying out these activities
• A third-party conformity assessment approach
• Focus on quality, traceability, and reliability in geotechnical field work