ISO 19711-2:2023

Overview

ISO 19711-2:2023 - "Building construction machinery and equipment - Truck mixers - Part 2: Safety requirements" defines safety requirements for truck mixers (as defined in ISO 19711-1). It is a type‑C machine safety standard that addresses the significant hazards and risk‑reduction measures relevant to truck mixers during transportation, assembly, dismantling, disabling, scrapping, operation and maintenance. The standard excludes carrier vehicles (trucks, tractors, self‑propelled machinery) and national vehicle/road regulations, and it does not apply to truck mixers manufactured before its publication date.

Key topics and technical requirements

ISO 19711-2 organizes safety requirements across system and component levels. Major topics include:

• General safety principles and risk reduction - application of ISO 12100 risk assessment concepts and elimination/minimization of significant hazards.
• Mechanical, electrical and thermal hazards - measures for protection against entanglement, crushing, electrical shock and burns.
• Control systems and emergency stops - requirements for stop systems, multiple control stations, cable‑less remote control and safety‑related parts of control systems (see ISO 13849‑1).
• Drum and discharge systems - safety for drum openings, drum‑locking devices, drum closure systems, flip‑over and swivel chutes.
• Power transmission and auxiliary systems - safeguards for drive trains, water systems and auxiliary engine exhaust.
• Access, platforms and guards - requirements for working platforms, tread at rear underrun protective devices and guarding practices (reference ISO 14120, ISO 3457).
• Noise and EMC - noise‑test code and declaration (Annex B/C), acoustic measurement guidance (ISO 3744, ISO 11201) and electromagnetic compatibility considerations (ISO 13766 series, IEC 61000).
• Information for use, marking and verification - instruction handbooks, labelling, warnings, verification methods and annexed figures (Annex A) and list of significant hazards (Annex D).

Practical applications and who uses this standard

ISO 19711-2 is intended for:

• Truck mixer manufacturers - to design and verify mixers that meet recognized safety requirements.
• Design engineers and safety professionals - for integration of control systems, guarding and emergency measures.
• Regulators, market surveillance and health & safety bodies - to assess conformity and reduce workplace risk.
• Equipment users and maintenance providers - to understand safe operation, maintenance procedures and required warnings/markings.

Use cases include product design, risk assessments, safety documentation, conformity demonstration, and preparation of instruction manuals and noise/emission declarations.

Related standards (selected normative references)

• ISO 19711-1 (Terminology and commercial specifications)
• ISO 12100 (Risk assessment and reduction)
• ISO 13849-1 (Safety‑related parts of control systems)
• ISO 14120 / ISO 13857 (Guards and safety distances)
• IEC 60204-1 (Electrical equipment of machines)
• ISO 3744 / ISO 11201 (Acoustics)
• ISO 13766 series / IEC 61000 (EMC)

Keywords: ISO 19711-2:2023, truck mixers safety requirements, building construction machinery, mixer drum safety, mixer noise test, control system safety.