ISO 11553-1:2020

Overview

ISO 11553-1:2020 - Safety of machinery - Laser processing machines - Part 1: Laser safety requirements - is an ISO standard developed in collaboration with IEC/TC 76. It defines laser radiation hazards specific to laser processing machines and specifies the safety requirements and manufacturer information that supplement IEC 60825. The standard applies to machines that use laser radiation to process materials (melting, evaporation, phase change) and excludes dedicated products for photolithography, stereolithography, holography, certain medical devices (IEC 60601‑2‑22), and data storage.

Key topics and technical requirements

• Hazard identification: Describes laser radiation hazards, sources of emission, and hazards induced by external interference.
• Risk assessment: Requires systematic risk assessment tailored to laser radiation hazards in laser processing machines, referencing ISO 12100 principles.
• Safety measures: Specifies hierarchical risk reduction measures - from design and engineering controls to administrative measures and personal protective equipment (PPE).
• Locations and access control: Defines controlled, restricted, and unrestricted locations and prescribes different protective measures per location category.
• Operating modes: Covers operational states (automatic, setting, manual intervention, service) and associated safety provisions, such as reduced power or step-mode during setting.
• Beam components and delivery: Defines terms like beam delivery system, beam path/shaping/switching components, fibre optic cables and connectors.
• Verification and validation: Requires verification procedures for safety requirements and implemented risk-reduction measures.
• Information & labelling: Specifies user information, warnings, and labelling requirements in addition to IEC 60825.
• Normative references: Links to related standards including IEC 60825 series, ISO 12100, ISO 11145, ISO 13849, IEC 60204-1, and others.

Applications and who uses it

ISO 11553-1:2020 is used by:

• Machine manufacturers and OEMs to design and certify laser processing equipment that meets legal and safety obligations.
• Safety engineers and designers for integrating engineering controls (guards, interlocks, beam enclosures, fibre monitoring).
• Compliance officers and testing laboratories when assessing conformity with machinery safety directives.
• Plant managers and integrators for safe installation, zoning, and operational procedures.
• Service technicians and training providers to define controlled-access procedures and safe service modes.

Practical benefits include clearer manufacturer instructions, reduced risk of laser injury, and harmonized compliance with machine safety directives.

Related standards

• IEC 60825 (Safety of laser products) - equipment classification and requirements
• ISO 12100 (Risk assessment and risk reduction)
• ISO 13849 / IEC 62061 (Safety-related control systems)
• IEC 60204-1 (Electrical safety of machines)

Keywords: ISO 11553-1:2020, laser safety requirements, laser processing machines, laser radiation hazards, risk assessment, IEC 60825, machine safety.