Cranes — Access, guards and restraints — Part 2: Mobile cranes

ISO 11660-2:2015 establishes the particular requirements relating to access, guards and restraints for mobile cranes as defined in ISO 4306‑1. ISO 11660‑1 establishes the general requirements for access to control stations and other areas of cranes as defined in ISO 4306‑1, during normal operations, maintenance, inspection, erection and dismantling. It also deals with guards and restraints in general, concerning the protection of persons on or near the crane with regard to moving parts, falling objects or live parts.

Appareils de levage à charge suspendue — Moyens d'accès, dispositifs de protection et de retenue — Partie 2: Grues mobiles

General Information

Status
Published
Publication Date
03-Jun-2015
Current Stage
9093 - International Standard confirmed
Start Date
03-Sep-2020
Completion Date
03-Sep-2020
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INTERNATIONAL ISO
STANDARD 11660-2
Redline version
compares Second edition to
First edition
Cranes — Access, guards and
restraints —
Part 2:
Mobile cranes
Appareils de levage à charge suspendue — Moyens d’accès, dispositifs
de protection et de retenue —
Partie 2: Grues mobiles
Reference number
ISO 11660-2:redline:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 11660-2:redline:2015(E)
IMPORTANT — PLEASE NOTE
This is a mark-up copy and uses the following colour coding:
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1.x ... — Heading numbers containg modifications are highlighted in yellow in
the Table of Contents

All changes in this document have yet to reach concensus by vote and as such should only

be used internally for review purposes.
DISCLAIMER

This Redline version provides you with a quick and easy way to compare the main changes

between this edition of the standard and its previous edition. It doesn’t capture all single

changes such as punctuation but highlights the modifications providing customers with

the most valuable information. Therefore it is important to note that this Redline version is

not the official ISO standard and that the users must consult with the clean version of the

standard, which is the official standard, for implementation purposes.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, 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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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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ISO 11660-2:redline:2015(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 General Terms and definitions ............................................................................................................................................................... 1

4 Definitions ................................................................................................................................................................................................................... 2

5 General criteria ...................................................................................................................................................................................................... 4

6 4 Performance criteria Access...................................................................................................................................................................... 5

6.1 4.1 General ........................................................................................................................................................................................................... 5

6.2 4.2 Requirements ........................................................................................................................................................................................... 5

4.2.1 General design requirements for access ..................................................................................................... 5

4.2.2 Compliance with ISO 11660-1 ............................................................................................................................. 5

7 Steps................................................................................................................................................................................................................................... 6

8 Ladders ........................................................................................................................................................................................................................... 8

9 Stairways ....................................................................................................................................................................................................................... 8

10 Handrails and handholds ............................................................................................................................................................................ 9

11 Platforms, passageways, walkways, guardrails and foot barriers .................................................................10

12 Enclosure openings .........................................................................................................................................................................................11

13 Powered or manually actuated access devices ...................................................................................................................13

14 Guards and restraints ...................................................................................................................................................................................14

Annex A (informative) Examples of surfaces considered to be slip-resistant ........................................................15

Annex В (informative) Bibliography ..................................................................................................................................................................16

Bibliography .............................................................................................................................................................................................................................17

© ISO 2015 – All rights reserved iii
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ISO 11660-2:redline:2015(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.

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 voteThe 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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

International Standard ISO 11660-2 was prepared by Technical CommitteeThe committee responsible

for this document is ISO/TC 96, Cranes, Subcommittee SC 6, Mobile cranes.

This second edition cancels and replaces the first edition (ISO 11660-2:1994), which has been technically

revised.

ISO 11660 consists of the following parts, under the general title Cranes — Access, guards and restraints:

— Part 1: General
— Part 2: Mobile cranes
— Part 3: Tower cranes
— Part 4: Jib cranes
— Part 5: Bridge and gantry cranes
Annexes A and B of this part of ISO 11660 are for information only.
iv © ISO 2015 – All rights reserved
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INTERNATIONAL STANDARD ISO 11660-2:redline:2015(E)
Cranes — Access, guards and restraints —
Part 2:
Mobile cranes
1 Scope

This part of ISO 11660 specifies criteria for steps, stairways, ladders, walkways, platforms, handrails,

handholds, guardrails and entrance openings which permit access to and from operator, inspection

or maintenance platforms onestablishes the particular requirements relating to access, guards and

restraints for mobile cranes as defined in ISO 4306-21 and parked in accordance with the manufacturer’s

instruction. It also presents requirements for guards and restraints as related to moving parts..

This part of ISO 11660-1 is also based on and partly in harmony withestablishes the general requirements

for access to control stations and other areas of cranes as defined in ISO 2860ISO 4306-1, during

normal operations, maintenance, inspection, erection and ISO 2867. For mobile cranes fitted with a

towerdismantling. It also deals with ISO 11660-3guards and ISO 11660-4 should be consultedrestraints

in general, concerning the protection of persons on or near the crane with regard to moving parts,

falling objects or live parts.
2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions

of this part ofreferenced documents are indispensable for the application of this ISO 11660. At the time

of publication, the editions indicated were valid. All standards are subject to revision, and parties to

agreements based on this part ofdocument. For dated references only the edition cited applies. For

undated references, ISO 11660 are encouraged to investigate the possibility of applying the most recent

editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid

International Standardsthe latest edition of the referenced document (including any amendments)

applies.

ISO 4306-2:— 11660-1:2008 , Cranes — Vocabulary Access, guards and restraints — Part 2: Mobile

cranes. 1: General

ISO 11660-1:— 4306-2 , Cranes — Access, guards and restraints Vocabulary — Part 1: General. 2: Mobile

cranes
3 General Terms and definitions

3.1 The requirements given in this part of ISO 11660 are based on one person, unladen, using the access

system by himself, i.e. no other coworkers are on the access system, and on the 95th to 5th percentile

human physical dimensions as presented in ISO 3411.

It shall also be recognized that some machine designs may require modifications or variances from the

requirements presented in this part of ISO 11660.

For the purposes of this document, the terms and definitions given in ISO 11660-1 apply.

1) To be published. (Revision of ISO 4306-2:1985)
2) To be published.
© ISO 2015 – All rights reserved 1
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ISO 11660-2:redline:2015(E)
4 Definitions
For the purposes of this part of ISO 11660, the following definitions apply.
4.1
access system

System provided on a machine for entrance to and exit from an operator, inspection or maintenance

platform from and to the ground.The primary access system is the access system normally used, while

the alternative access system is the access route used during anticipated emergency situations when the

primary access system cannot be used.
4.2
jib walkway

Walkway used mainly on long jibs, such as on dragline cranes, which are inclined at angles up to 20°

from the horizontal.
4.3
jib skywalk platform
Maintenance platform on jib base sections.
4.4
controlled descent device

Device which can automatically lower a person without power at a fixed speed as part of an alternative

access system.
4.5
enclosure opening

Opening leading to or from an access system and large enough for a person to pass through.

4.5.1
primary opening
Opening normally used for access.
4.5.2
alternative opening
Opening for use during emergencies when the primary opening is not usable.
4.5.3
service opening
Opening for use during maintenance, service or inspection.
4.6
foot barrier

Device to prevent a person’s foot from slipping off the edge of a platform or walkway.

4.7
guardrail

Device along the open sides of walkways or platforms to protect a person from falling.

4.8
handrail and handhold

Parts of an access system that may be grasped by the hand as an aid to body support and balance.

4.9
ladder

Access system or part of an access system, inclined from the horizontal at an angle greater than 50° but

not more than 90°, consisting of a series of equally spaced steps that can accommodate one or both feet.

4.9.1
vertical ladder
Ladder whose angle of inclination from the horizontal is greater than 75°.
2 © ISO 2015 – All rights reserved
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ISO 11660-2:redline:2015(E)
4.9.2
inclined ladder

Ladder whose angle of inclination from the horizontal is greater than 50° but not more than 75°.

4.9.3
rung ladder

Ladder consisting of side rails and rungs which can accommodate both feet, used for access where the

angle of inclination from the horizontal exceeds 75°.
4.9.4
stepped ladder

Ladder consisting of side rails and steps which can accommodate both feet, used for access where the

angle of inclination from the horizontal exceeds 65°.
4.10
ladder fall-limiting device
Any device which minimizes or limits the length of fall from a ladder system.
4.11
operator’s platform

Area from which an operator controls the travel and work functions of the machine.

4.12
passageway

Walkway with confining barriers on both sides that extend vertically above the walking surface to a

height of at least 1 200 mm for erect walking or 300 mm for crawling.
4.13
platform

Horizontal surface for the support of persons engaged in operation, maintenance, inspection or repair

work.
4.14
ramp

Plane inclined at an angle of 20° or less from the horizontal, without steps, but with cleats or other

surface treatment for the purpose of traction.
4.15
cleat
Device added to a walkway or ramp surface to improve traction.
4.16
rest platform
landing

Platform used in conjunction with a ladder system for a person to rest on while standing.

4.17
riser height

Height between two consecutive steps or rungs, measured from the tread surface of one step or rung to

the tread surface of the next.
4.18
rung

Device on which one or both feet may be placed, generally installed on vertical ladders or on a single

foot-step.
4.19
stairway

Access system or part of an access system inclined from the horizontal at an angle greater than 33,7° but

not more than 67° and consisting of four or more steps.
© ISO 2015 – All rights reserved 3
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ISO 11660-2:redline:2015(E)
4.20
step

Device for placement of one or both feet, either as part of a ladder or stairway, or installed (placed)

individually.
4.21
stride distance

Horizontal distance from the leading edge of one step to the leading edge of the next step.

4.22
three-point support

Feature of an access system which permits, but does not require, a person to use simultaneously two

hands and one foot or two feet and one hand, while ascending, descending or moving about on the crane.

4.23
tread depth
Distance from the leading edge to the back of the step.
4.24
walkway

Part of an access system that permits walking or crawling between locations on a crane.

4.25
powered or manually actuated access device

Device that through power or manual actuation provides a complete or partial primary access or

alternative access system.
4.26
slip-resistant surface

Access system surface having qualities which improve the traction obtained by the foot.Annex A presents

examples of surfaces that are considered “slip-resistant”.
5 General criteria
5.1 Access system design shall consider:

a) the probability of a user being inadvertently restrained by protruding devices such as controls,

steps or handles catching or holding body appendages or wearing apparel;

b) protrusions which could trip the user or increase the severity of an injury in case of a fall;

c) providing handrails or handholds with a smooth handgrasp surface;

d) the probability of user contact with potential hazards such as extreme differences in heat or cold,

electrical hazards, moving parts and sharp corners;
e) use of the access system shall be easily understood and require no training;

f) proper placement of components offering three-point support to the user ascending or descending

the access system when more than 1 m above the ground.

5.2 Primary access system devices may be portable for convenient storage on the crane but shall be

capable of being positively secured when in use or in the stored position.

5.3 An alternative exit shall be provided and shall be clearly indicated if not obvious.

4 © ISO 2015 – All rights reserved
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ISO 11660-2:redline:2015(E)
6 4 Performance criteria Access
6.1 4.1 General

The walking and standing surfaces of access systems shall withstand, without visible permanent

deformation, the following minimum forces applied perpendicular to the surfaceAll control stations

shall be accessible from the ground or by means of walkway(s), stairs, ladders and/or landings.

a) 2 000 N concentrated through a 125 mm diameter disc applied at any location on the surface; and

b) 4 500 N uniformily distributed per square metre of surface area or fraction thereof if less than a

square metre.

These forces need not be applied simultaneouslyOther parts of the crane that require frequent access

(i.e. weekly) for operation or maintenance shall b
...

INTERNATIONAL ISO
STANDARD 11660-2
Second edition
2015-06-01
Cranes — Access, guards and
restraints —
Part 2:
Mobile cranes
Appareils de levage à charge suspendue — Moyens d’accès, dispositifs
de protection et de retenue —
Partie 2: Grues mobiles
Reference number
ISO 11660-2:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 11660-2:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 11660-2:2015(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Access ............................................................................................................................................................................................................................... 1

4.1 General ........................................................................................................................................................................................................... 1

4.2 Requirements ........................................................................................................................................................................................... 1

4.2.1 General design requirements for access ..................................................................................................... 1

4.2.2 Compliance with ISO 11660-1 ............................................................................................................................. 2

Bibliography ................................................................................................................................................................................................................................ 3

© ISO 2015 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 11660-2:2015(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.

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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information
...

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