ISO/TS 24283-3:2022

Geotechnical investigation and testing - Qualification criteria and assessment - Part 3: Qualified enterprise

This document specifies the qualification criteria for enterprises performing sampling, testing, measuring, monitoring and installation of equipment (e.g. piezometers, borehole heat exchangers, inclinometers and extensometers) in the framework of geotechnical investigation.

Reconnaissance et essais géotechniques - Critères de qualification et évaluation — Partie 3: Entreprise qualifiée

General Information

• Status: Published
• Publication Date: 05-Jan-2022
• ICS: 03.100.30 - Management of human resources
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: ISO/TC 182 - Geotechnics
• Drafting Committee: ISO/TC 182/WG 4 - Drilling and sampling methods and groundwater measurements
• Current Stage: 9093 - International Standard confirmed
• Start Date: 30-Jul-2025
• Completion Date: 13-Dec-2025

Relations

• Consolidates: ISO 15037-1:2019 - Road vehicles - Vehicle dynamics test methods - Part 1: General conditions for passenger cars
• Effective Date: 06-Jun-2022
• Revises: ISO/TS 22475-3:2007 - Geotechnical investigation and testing - Sampling methods and groundwater measurements - Part 3: Conformity assessment of enterprises and personnel by third party
• Effective Date: 06-Jun-2022

Overview

ISO/TS 24283-3:2022 specifies the qualification criteria for enterprises that perform sampling, testing, measuring, monitoring and installation of geotechnical equipment (for example piezometers, borehole heat exchangers, inclinometers and extensometers). It is Part 3 of the ISO 24283 series and defines the organisational, technical and procedural requirements an enterprise must document and demonstrate to be recognised as a qualified enterprise for geotechnical investigation and testing.

Key topics and requirements

• Scope of competence: Documented capability to perform specified sampling, laboratory and field testing, monitoring and installation activities.
• Personnel: Minimum appointment of at least one responsible expert (per ISO/TS 24283‑2) for each project and adequate numbers of qualified technicians/operators (per ISO/TS 24283‑1). The responsible expert must check and sign reports.
• Equipment and calibration: Items of equipment must comply with relevant standards, be correctly maintained, calibrated and used according to manufacturers’ manuals.
• Management systems: A documented quality management system and a health, safety and environmental (HSE) system are required.
• Insurance and liability: Enterprises must hold appropriate public liability and other insurance.
• Training and subcontractors: Regular personnel training with records; external personnel and subcontractors must meet equivalent qualification criteria and be verified by the enterprise.
• Assessment procedures: Prerequisites for initial assessment include lists of responsible experts, technicians, equipment, QMS and HSE documentation. Annual self-monitoring is required; inspection after 3.5 years and full re‑assessment every 7 years (see Annex A).
• Conformity evidence: Fulfilment may be demonstrated by declarations of conformity or third‑party conformity assessment.

Practical applications and users

Who uses ISO/TS 24283-3:2022:

• Geotechnical contractors and field investigation firms seeking to formalise and demonstrate enterprise-level competence.
• Testing laboratories and instrumentation installers (piezometers, borehole heat exchangers, inclinometers, extensometers).
• Project owners, engineering consultancies and clients requiring verified supplier qualification.
• Certification and conformity assessment bodies assessing enterprise competence.

Practical benefits:

• Standardises qualification expectations across sampling, field testing and instrumentation installation.
• Improves project quality by ensuring trained personnel, calibrated equipment and robust QMS/HSE practices.
• Facilitates procurement and compliance checks for infrastructure, construction and geothermal projects.

Related standards

• ISO/TS 24283-1 - Qualified technician/operator
• ISO/TS 24283-2 - Responsible expert
• Referenced technical standards in the bibliography (examples): ISO 14688, ISO 17628, ISO 17892, ISO 18674, ISO 22282, ISO 22475, ISO 22476.

Keywords: ISO/TS 24283-3:2022, geotechnical investigation, qualified enterprise, qualification criteria, sampling, field testing, monitoring, piezometers, borehole heat exchangers, inclinometers, extensometers, quality management, HSE, assessment.

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 24283-3
First edition
2022-01
Geotechnical investigation and
testing — Qualification criteria and
assessment —
Part 3:
Qualified enterprise
Reconnaissance et essais géotechniques - Critères de qualification et
évaluation —
Partie 3: Entreprise qualifiée
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Qualification criteria . .1
Annex A (informative) Assessment and re-assessment of enterprises . 3
Bibliography . 5
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 182, Geotechnics, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical
Investigation and Testing, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
A list of all parts in the ISO 24283 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
The ISO 24283 series specifies the qualification criteria for geotechnical investigation and testing and
has three parts:
— Part 1: Qualified technician and qualified operator
— Part 2: Responsible expert
— Part 3: Qualified enterprise
The fulfilment of the technical criteria by the enterprise or the individual can be proven by:
a) a declaration of conformity by a contractor (first party control);
b) a declaration of conformity by a client (second party control);
c) a declaration of conformity by a conformity assessment body (third party control).
v
TECHNICAL SPECIFICATION ISO/TS 24283-3:2022(E)
Geotechnical investigation and testing — Qualification
criteria and assessment —
Part 3:
Qualified enterprise
1  Scope
This document specifies the qualification criteria for enterprises performing sampling, testing,
measuring, monitoring and installation of equipment (e.g. piezometers, borehole heat exchangers,
inclinometers and extensometers) in the framework of geotechnical investigation.
2  Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TS 24283-1, Geotechnical investigation and testing — Qualification criteria and assessment — Part 1:
Qualified technician
ISO/TS 24283-2, Geotechnical investigation and testing — Qualification criteria and assessment — Part 2:
Responsible expert
3  Terms and definitions
For the purposes of this document, the follow
...