ISO 10245-3:2019

Overview

ISO 10245-3:2019 - "Cranes - Limiting and indicating devices - Part 3: Tower cranes" specifies requirements for limiting and indicating devices specific to tower cranes (as defined in ISO 4306‑3). It complements the general provisions of ISO 10245‑1 and addresses devices such as rated capacity limiters/indicators, motion and performance limiters, anemometers, event recorders/data loggers, and provisions for climbing systems. The standard excludes end stops (buffers), erection/dismantling operations and changes of crane configuration.

Key topics and technical requirements

• Scope and applicability
  • Applies to tower cranes; not applicable to certain end stops, erection/dismantling or reconfiguration.
• Rated capacity limiters and indicators
  • Required for cranes with rated capacity ≥ 1 000 kg or overturning moment ≥ 40 000 N·m.
  • Limiters must activate at not more than 110% of rated capacity to allow for dynamic effects.
  • Indicators must warn at 90% (approach) and give continuous visual + audible warning at 100%.
  • No operator override of rated capacity limiter during normal operation.
• Motion limiters and performance limiters
  • Motion limiters: hoisting, lowering, travelling, trolleying, luffing and others per Table 1 (some types optional or conditional).
  • Performance limiters: hoisting, lowering and luffing speed limiters where risk of exceeding design speeds exists.
  • Secondary (backup) limiters require controlled reset actions not readily available to the operator.
• Indicators and response
  • Indicators for actual load, actual radius and maximum allowable radius are recommended; plates on jib also acceptable.
  • Response time must be adequate to reflect current conditions.
• Anemometer
  • Required for tower cranes except some self‑erecting cranes with height under hook < 30 m (horizontal jib).
• Event recorder and data logger
  • New/expanded requirements and recommendations for event recorders and data loggers (Clause 10 and Annex B); may be mandatory under national regulation.
• Climbing systems
  • Requirements added for limiting and indicating devices that control balance moment and working pressure during climbing.

Applications and users

This standard is intended for:

• Crane manufacturers - design and install compliant limiting/indicating systems.
• Safety engineers and site managers - specify required devices for safe operation and procurement.
• Inspection and maintenance personnel - test, verify and reset devices per design and testing provisions.
• Operators and training organizations - understand warning thresholds and required behavior.
• Regulators and certification bodies - evaluate conformity and workplace safety compliance.

Related standards

• ISO 10245-1 (General requirements for limiting and indicating devices)
• ISO 4306‑3 (Cranes - Classification, definitions for tower cranes)
• IEC 60204‑32 and IEC 61310‑1 (electrical safety and signalling/indication requirements)

Keywords: ISO 10245-3:2019, tower cranes, limiting and indicating devices, rated capacity limiter, rated capacity indicator, anemometer, event recorder, working space limiter, anti-collision device.