ISO 11660-2:2015

Overview

ISO 11660-2:2015 is an international standard developed by the International Organization for Standardization (ISO) that specifies particular requirements for access, guards, and restraints on mobile cranes. It complements ISO 11660-1, which provides general requirements for crane access and related safety measures. This part focuses on mobile cranes as defined in ISO 4306-1, addressing critical safety aspects for operators and maintenance personnel during normal operations, inspections, maintenance, erection, and dismantling phases.

The standard ensures safe access routes, protection against moving parts, falling objects, and electrical hazards, making it a vital reference for crane manufacturers, safety engineers, and regulatory bodies involved in mobile crane design and usage.

Key Topics

ISO 11660-2 covers several essential elements related to mobile crane safety and accessibility, including:

• Access systems: Criteria for primary and alternative access systems such as steps, ladders, stairways, platforms, walkways, and ramps.
• Guarding and restraints: Requirements for handrails, guardrails, foot barriers, and other restraints to protect persons on or near cranes.
• Design specifics: Standards for the design of access elements-like rung ladders, vertical and inclined ladders, steps with proper riser heights, slip-resistant surfaces, and controlled descent devices.
• Safety performance: Load-bearing capabilities of access surfaces and measures to prevent falls, such as ladder fall-limiting devices, three-point support, and secure enclosures.
• Human factors: Considerations based on anthropometric data (95th to 5th percentile) ensuring accessibility for a wide range of users.
• Emergency access and egress: Provisions for alternative access routes to be used during emergencies when the primary routes are inaccessible.
• Maintenance and inspection access: Specific requirements for crane parts accessed less frequently but requiring safe points of entry.

Applications

This standard plays a critical role in several practical areas by enhancing safety and usability of mobile cranes:

• Mobile crane manufacturing: Provides guidelines for designing safe access systems and protective guards embedded into crane structures.
• Safety compliance and audits: Assists in evaluating crane setups to ensure compliance with recognized safety norms, reducing workplace accidents.
• Operator training: Ensures that access ways and platforms are designed for intuitive use, helping operators and maintenance staff to move safely around cranes without specialized training.
• Maintenance planning: Defines proper access routes and guards to facilitate safe, efficient performing of inspections, maintenance, and repairs.
• Construction and industrial sites: Supports employers and safety officers in implementing safety protocols aligned with international standards, improving overall site safety.

Related Standards

For comprehensive crane safety and operation protocols, ISO 11660-2:2015 is used alongside other ISO standards in the crane family, including:

• ISO 11660-1:2008 – Cranes - Access, guards and restraints - Part 1: General requirements, providing foundational principles applicable across crane types.
• ISO 4306-1 – Cranes - Vocabulary - Key terms defining mobile cranes and associated parts.
• ISO 11660-3 – Focused on tower cranes, covering specific access and guard requirements for that crane type.
• ISO 11660-4 – Jib cranes, prescribing safety criteria specialized to the structure and operation of jib cranes.
• ISO 11660-5 – Bridge and gantry cranes, addressing access and restraint measures related to those stationary crane types.
• ISO 3411 – Anthropometric data used as a reference for human dimensions and ergonomic considerations in crane design.

Summary

Adherence to ISO 11660-2:2015 ensures mobile crane safety by establishing precise requirements related to access and fall protection systems. It safeguards crane users from mechanical hazards through well-designed access solutions, guardrails, and restraint devices. This standard is indispensable for stakeholders seeking to optimize safety compliance, operator welfare, and maintenance efficiency in mobile crane operations worldwide.

Keywords: ISO 11660-2, mobile cranes, crane access systems, crane guards, fall restraints, crane safety standards, industrial crane safety, crane maintenance access, operator safety, slip-resistant surfaces, ladder safety, crane regulations.