SIST EN ISO 14122-3:2002

SLOVENSKI STANDARD
SIST EN ISO 14122-3:2002
01-november-2002
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Safety of machinery - Permanent means of access to machinery - Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3:2001)
Sicherheit von Maschinen - Ortsfeste Zugänge zu maschinellen Anlagen - Teil 3:
Treppen, Treppenleitern und Geländer (ISO 14122-3:2001)
Sécurité des machines - Moyens d'acces permanents aux machines - Partie 3: Escaliers,
échelles a marches et garde-corps (ISO 14122-3:2001)
Ta slovenski standard je istoveten z: EN ISO 14122-3:2001
ICS:
13.110 Varnost strojev Safety of machinery
SIST EN ISO 14122-3:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 14122-3:2002

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SIST EN ISO 14122-3:2002
EUROPEAN STANDARD
EN ISO 14122-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2001
ICS 13.110
English version
Safety of machinery - Permanent means of access to machinery
- Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001)
Sécurité des machines - Moyens d'accès permanents aux Sicherheit von Maschinen - Ortsfeste Zugänge zu
machines - Partie 3: Escaliers, échelles à marches et maschinellen Anlagen - Teil 3: Treppen, Treppenleitern und
garde-corps (ISO 14122-3:2001) Geländer (ISO 14122-3:2001)
This European Standard was approved by CEN on 14 February 2000.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14122-3:2001 E
worldwide for CEN national Members.

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EN ISO 14122-3:2001
Contents
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions.6
4 General safety requirements concerning materials and dimensions .9
5 Safety requirements applicable to stairs.9
6 Safety requirements applicable to step ladders.10
7 Safety requirements applicable to guard-rails.11
7.1 Horizontal guard-rails.11
7.2 Guard-rails of stairs and step ladders .13
7.3 Structural requirements .15
8 Verification of safety requirements.15
8.1 General.15
8.2 Testing of guard-rails .16
8.2.1 Preloading.16
8.2.2 Stanchion measurement .16
8.2.3 Handrail measurement .17
9 Assembly instructions .18
10 Information for use – Instruction handbook .18
Annex ZA (informative) Relationship of this European standard with EU directives .19
Bibliography .20

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EN ISO 14122-3:2001
Foreword
The text of EN ISO 14122-3:2001 has been prepared by Technical Committee CEN/TC 114 "Safety of machinery",
the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 199 "Safety of
machinery".
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by November 2001, and conflicting national standards shall be withdrawn at the latest
by November 2001.
This European Standard has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom.

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EN ISO 14122-3:2001
Introduction
EN ISO 14122 consists of the following parts, under the general title "Safety of machinery - Permanent means of
access to machinery" :
Part 1: Choice of a fixed means of access between two levels
Part 2: Working platforms and walkways
Part 3: Stairs, step ladders and guard-rails
Part 4: Fixed ladders.
This part of EN ISO 14122 is a type B standard as stated in EN 1070.
This document is to be read in conjunction with clause 1.6.2 "Access to operating position and servicing points" and
1.5.15 "Risk of slipping, tripping or falling" of the essential safety requirements expressed in annex A of
EN 292-2:1991/A1:1995. See also 6.2.4 "Provision for safe access to machinery" of EN 292-2:1991.
For the significant hazards covered by this part of EN ISO 14122, see clause 4 of EN ISO 14122 -1.
The provisions of this part of EN ISO 14122 may be supplemented or modified by a type C standard.
NOTE 1 For machines which are covered by the scope of a type C standard and which have been designed and built
according to the provisions of that standard, the provisions of that type C standard take precedence over the provisions of this
type B standard.
The dimensions specified are consistent with established ergonomic data given in EN 547-3 "Safety of machinery - Human body
dimensions – Part 3 : Anthropometric data".
NOTE 2 The use of materials other than metals (composite materials, so-called "advanced" materials, etc.) does not alter the
application of the present standard.
Annex ZA is for information only.
This part of EN ISO 14122 contains a Bibliography.

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EN ISO 14122-3:2001
1 Scope
EN ISO 14122 defines the general requirements for safe access to machines mentioned in EN 292-2. Part 1 of EN
ISO 14122 gives advice about the correct choice of access means when the necessary access to the machine is
not possible directly from the ground level or from a floor.
This part of EN ISO 14122 applies to all machinery (stationary and mobile) where fixed means of access are
necessary.
This part of EN ISO 14122 applies to stairs, step ladders and guard-rails which are a part of a machine.
This part of EN ISO 14122 may also apply to stairs, step ladders and guard-rails to that part of the building where
the machine is installed, providing the main function of that part of the building is to provide a means of access to
the machine.
NOTE This part of EN ISO 14122 may be used also for means of access which are outside the scope of this standard. In
those cases the possible relevant national or other regulations should be taken into account.
This part of EN ISO 14122 applies also to stairs, step ladders and guard-rails specific to the machine which are not
permanently fixed to the machine and which may be removed or moved to the side for some operations of the
machine (e.g. changing tools in a large press).
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 292—1 (ISO/TR 12100-1), Safety of machinery — Basic concepts, general principles for design — Part 1 :
Basic terminology, methodology
EN 292-2:1991 + A1 (ISO/TR 12100-2), Safety of machinery — Basic concepts, general principles for design —
Part 2 : Technical principles and specifications
EN 1070, Safety of machinery — Terminology
EN ISO 14122-1:2001, Safety of machinery — Permanents means of access to machinery — Part 1 : Choice of
fixed means of access between two levels

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EN ISO 14122-3:2001
3 Terms and definitions
For the purposes of this part of EN ISO 14122, the terms and definitions stated in EN 1070 "Safety of machinery -
Terminology" and of EN ISO 14122-1 apply.
The following additional definitions particularly required for this standard apply :
3.1
stairs and step ladders
the definitions stated in 3.2 and 3.3 of EN ISO 14122-1:2001 are completed by:
Succession of horizontal levels (steps or landings) allowing passage on foot from one level to another composed of
the following elements, shown in Figure 1 and explained from 3.1.1 to 3.1.16
Key
H Climbing height
g Going
e Headroom
h Rise
l Length of landing
r Overlap

Angle of pitch
w Width
p Pitch line
t Depth of step
c Clearance
Figure 1 — Parts of stairs and step ladders

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EN ISO 14122-3:2001
3.1.1
climbing height
vertical distance between the reference level and the landing (H in Figure 1)
3.1.2
flight
uninterrupted sequence of steps between two landings
3.1.3
going
horizontal distance between the step nosing of two consecutive steps (g in Figure 1)
3.1.4
headroom
minimum vertical distance, clear of all obstacles (such as beams, ducts, etc.) above the pitch line (e in Figure 1)
3.1.5
landing
horizontal resting area situated at the end of a flight (l in Figure 1).
3.1.6
walking line
theoretical line indicating the average path of the users of the stair or the step ladder
3.1.7
overlap
difference between the depth of the step and the going (r in Figure 1)
3.1.8
pitch line
a notional line connecting the leading edge of the nosing of successive steps taken on the walking line and which
extends down to the landing at the bottom of the flight from the nosing on the landing at the top of the flight (p in
Figure 1)
3.1.9
angle of pitch of the stair or step ladder
angle between the pitch line and its projection on the horizontal level (
in Figure 1)
3.1.10
rise
height between two consecutive steps measured from the tread surface of one to the tread surface of the next (h in
Figure 1)
3.1.11
step
horizontal surface on which one places the foot to go up or down the stair or step ladder
3.1.12
nosing
top edge at the front of the step or landing
3.1.13
string
flanking framework element supporting the steps
3.1.14
width
clear distance over the outside faces of the step (w in Figure 1)
3.1.15
depth of step
clear distance from the leading edge or the nosing to the rear of the step (t in Figure 1)

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EN ISO 14122-3:2001
3.1.16
clearance
absolute minimum clear distance between any obstacle and the pitch line (c in Figure 1) measured at an angle of
90 ° from the pitch line
3.2
guard-rail
device for protection against accidental fall or accidental access to a hazardous area, with which stairs, step
ladders or landings, platforms and walkways may be equipped. Typical parts of a guard-rail are shown in Figure 2
and defined in 3.2.1 to 3.2.5
Key
1 Handrail
2 Kneerail
3 Toe plate
4 Stanchion
5 Walking level
Figure 2 — Example of the parts of a typical structure of a guard-rail
3.2.1
handrail
top element designed to be grasped by the hand for body support which can be used individually or as the upper
part of a guard-rail (1 in Figure 2)
3.2.2
kneerail
element of the guard-rail placed parallel with the handrail, giving extra protection against the passage of a body
(2 in Figure 2)
3.2.3
stanchion
vertical structural element of the guard-rail to anchor the guard-rail to the platform or stair. (4 in Figure 2)
3.2.4
toe-plate
solid lower part of a guard-rail or upstand on a landing to prevent the fall of objects from a floor level (3 in Figure 2)
NOTE A toe-plate also reduces the free space between the floor and kneerail to prevent the passage of a body.

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EN ISO 14122-3:2001
3.2.5
self closing gate
part of the guard-rail which is intended to be opened easily. When the ga
...