Overview
ISO 16715:2014 - Cranes - Hand signals used with cranes specifies requirements for standard hand signals used in lifting operations. Its objective is to achieve uniform, unambiguous hand signals-particularly important on projects where personnel from multiple countries or organizations work together. The standard covers general signalling principles and defined signals for vertical and horizontal movements, equipment-related actions and lifting-attachment control.
Key Topics and Requirements
- Scope: Requirements for hand signals used during crane lifting operations.
- Signal categories:
- General signals (start, stop, emergency stop, cease operation, inching)
- Vertical movements (raise, lower, raise/lower slowly, indicate vertical distance)
- Horizontal movements (travel/slew directions, crawler track travel, turnover)
- Equipment-related movements (main/auxiliary hoist, boom/trolley raise, extend, retract)
- Lifting-attachment control (e.g., clamshell bucket open/close)
- Core requirements:
- Signals must be clear, concise and fully understood by crane operators.
- The signaller must be in a safe position, clearly visible to the operator, and have a clear view of the load or equipment.
- Only one person shall give signals to the operator (exception: emergency stop).
- Non‑specific one‑arm signals may use either arm; specific left/right indications are distinct.
- Signals may be combined where applicable; after some equipment-specific signals other signals apply only to that hoist or attachment.
- Terminology: Uses and references definitions such as slewing (radial horizontal movement with crane base stationary) and travel (movement of the whole crane), referencing ISO 4306-1.
Applications and Who Uses It
ISO 16715:2014 is used to improve safety, communication and interoperability on construction sites, ports, industrial plants and any location using cranes for lifting. Typical users include:
- Crane operators and signallers
- Site managers and lift planners
- Health & safety officers and trainers
- Crane manufacturers and equipment suppliers
- Training providers and competency assessors
Implementing ISO 16715 helps reduce miscommunication during lifts, supports training and competency programs, and facilitates international crew cooperation.
Related Standards
- ISO 4306-1 - Cranes - Vocabulary (referenced normative definitions)
- ISO 15513 - Competency requirements for crane drivers, slingers, signallers and assessors (bibliographic reference)
Keywords: ISO 16715:2014, crane hand signals, hand signals for cranes, lifting operations, crane signaller, crane operation safety, crane signalling standard.