ISO 11660-4:2012
(Main)Cranes - Access, guards and restraints - Part 4: Jib cranes
Cranes - Access, guards and restraints - Part 4: Jib cranes
ISO 11660-4:2012 establishes the particular requirements relating to access, guards and restraints for jib cranes as defined in ISO 4306-1.
Appareils de levage à charge suspendue — Moyens d'accès, dispositifs de protection et de retenue — Partie 4: Grues à flèche
General Information
- Status
- Published
- Publication Date
- 05-Feb-2012
- Technical Committee
- ISO/TC 96/SC 8 - Jib cranes
- Drafting Committee
- ISO/TC 96/SC 8 - Jib cranes
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 22-Sep-2022
- Completion Date
- 13-Dec-2025
Overview
ISO 11660-4:2012 specifies the particular requirements for access, guards and restraints for jib cranes (as defined in ISO 4306-1). It complements the general provisions in ISO 11660-1 by addressing design and safety measures specific to jib crane structures, walkways and components used during normal operation, inspection, maintenance, erection and dismantling. The standard is intended to reduce risks from moving parts, falling objects and fall hazards on or near jib cranes.
Key topics and technical requirements
- Access design
- Access to control stations and other crane areas must be provided by walkways, stairs, ladders, landings or mobile ground-mounted facilities.
- Design must comply with the relevant clauses of ISO 11660-1 with jib-specific additions from ISO 11660-4.
- Crushing hazard controls
- For frequently used access (type 1), transfer points with crushing risk must have interlocked gates that disable the relevant motion.
- For less frequent access (type 2), maintain a safety distance of at least 0.5 m; where not possible, apply warning labels and motion-disabling devices.
- Stairs and ladders
- Recommended stair step dimensions: rise 200 mm, clear width 500 mm.
- Rung ladders: first flight ≤ 10 m; rest landings at least every 10 m of vertical climb.
- Manholes and hatch apertures
- Minimum effective hatch sizes where larger dimensions cannot be provided: type 1: 0.5 m × 0.5 m; type 2: 0.5 m × 0.4 m.
- Walkway along inclined jib
- When the jib cannot be lowered, a walkway with side protection or personal fall-protection device is required.
- Walkway width should follow ISO 11660-1 (Table 6, type 2 access).
- Toe boards: minimum height 0.03 m; may be required on one or both sides depending on clearance (1.8 m threshold).
- Guards and restraints
- Moving parts must be guarded by safety distances per ISO 13852 or by fixed/removable guards; warnings where guarding is not practicable.
- Open gears, chain drives and similar transmissions in permanent access zones shall be guarded unless drawing-in points are sufficiently remote.
- Covers and access closures must be hinged or retained to prevent falling. External slewing gears require covers or devices to prevent falling if rupture/jamming occurs.
- Use of multi-part hook block designs is recommended to minimize hand-drawing-in risks.
Applications and who uses it
ISO 11660-4 is used by:
- Crane manufacturers and designers specifying safe access and guarding for jib cranes
- Health & safety officers, maintenance teams and inspectors conducting risk assessments and safety audits
- Employers and site managers developing procedures for inspection, maintenance and safe access
- Regulators and procurement teams referencing standards in specifications and compliance checks
Practical benefits include improved crane safety, clearer maintenance access design, reduced falling-object risk and harmonized requirements for jib-crane installations.
Related standards
- ISO 11660-1:2008 - Cranes: Access, guards and restraints - Part 1: General
- ISO 4306-1 - Cranes: Vocabulary (definitions for jib cranes)
- ISO 13852 - Safety distances to prevent reaching danger zones
Keywords: ISO 11660-4, jib cranes, crane safety, access guards restraints, walkway design, rung ladder requirements, guard for moving parts.
Frequently Asked Questions
ISO 11660-4:2012 is a standard published by the International Organization for Standardization (ISO). Its full title is "Cranes - Access, guards and restraints - Part 4: Jib cranes". This standard covers: ISO 11660-4:2012 establishes the particular requirements relating to access, guards and restraints for jib cranes as defined in ISO 4306-1.
ISO 11660-4:2012 establishes the particular requirements relating to access, guards and restraints for jib cranes as defined in ISO 4306-1.
ISO 11660-4:2012 is classified under the following ICS (International Classification for Standards) categories: 53.020.20 - Cranes. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 11660-4:2012 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11660-4
First edition
2012-02-01
Cranes — Access, guards and restraints —
Part 4:
Jib cranes
Appareils de levage à charge suspendue — Moyens d’accès, dispositifs
de protection et de retenue —
Partie 4: Grues à flèche
Reference number
©
ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2012 – All rights reserved
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 11660-4 was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 8, Jib cranes.
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
INTERNATIONAL STANDARD ISO 11660-4:2012(E)
Cranes — Access, guards and restraints —
Part 4:
Jib cranes
1 Scope
This part of ISO 11660 establishes the particular requirements relating to access, guards and restraints for jib
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.
2 Normative references
The following referenced documents are indispensable for the application 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 11660-1:2008, Cranes — Access, guards and restraints — Part 1: General
ISO 13852, Safety of machinery — Safety distances to prevent danger zones being reached by the upper limbs
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11660-1 apply.
4 Access
4.1 General
All control stations and other parts of the crane during normal operations, inspection, maintenance, erection or
dismantling operations, as necessary, shall be accessible by means of walkways, stairs, ladders, landings or
by mobile, ground-mounted access facilities.
4.2 Requirements
4.2.1 General design requirements for access
4.2.1.1 Compliance with ISO 11660-1
The design requirements for access shall comply with the clauses/subclauses of ISO 11660-1:2008 specified in
Table 1 below, completed by the corresponding subclauses of this part of ISO 11660 specified in the same table.
Table 1 — Design requirements for access
Applicable clause/subclause Applicable subclause
Hazard/access means
of ISO 116
...
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