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INTERNATIONAL
STANDARD
ISO
14122-4
First edition
2004-12-15
Safety of machinery — Permanent means
of access to machinery —
Part 4:
Fixed ladders
Sécurité des machines — Moyens d'accès permanents aux
machines —
Partie 4: Échelles fixes
Reference number
ISO 14122-4:2004(E)
© ISO 2004
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ISO 14122-4:2004(E)
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© ISO 2004
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© ISO 2004 – All rights reserved
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ISO 14122-4:2004(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 14122-4 was prepared by the European Committee for Standardization (CEN) in collaboration with
Technical Committee ISO/TC 199, Safety of machinery, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
Throughout the text of this document, read “...this European Standard...” to mean “...this International
Standard...”.
ISO 14122 consists of the following parts, under the general title Safety of machinery — Permanent means of
access to machinery :

Part 1: Choice of fixed means of access between two levels

Part 2: Working platforms and walkways

Part 3: Stairs, stepladders and guard-rails

Part 4: Fixed ladders
For the purposes of this part of ISO 14122, the CEN annex regarding fulfilment of European Council
Directives has been removed.
© ISO 2004 – All rights reserved
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ISO 14122-4:2004(E)
Contents
Page
Foreword......................................................................................................................................................................v
Introduction ................................................................................................................................................................vi
1
Scope ..............................................................................................................................................................1
2
Normative references ....................................................................................................................................1
3
Terms and definitions ...................................................................................................................................1
4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.3
4.3.1
4.3.2
4.4
4.4.1
4.4.2
4.4.3