Overview
ISO/ASTM 52938-1:2025 defines critical safety requirements for additive manufacturing (AM) machines using the Laser Beam Powder Bed Fusion (PBF-LB) process with metallic powders. This standard applies specifically to PBF-LB machines that do not process pyrophoric feedstock, excluding hazards from design, construction, and operation in explosive atmospheres. Developed by ISO Technical Committee 261 with ASTM, the standard addresses all significant hazards, hazardous situations, and hazardous events throughout the machine's lifecycle-spanning from installation and operation to maintenance and decommissioning. It focuses on establishing a robust framework to ensure operator safety, equipment integrity, and environmental protection in metal additive manufacturing environments.
Key Topics
ISO/ASTM 52938-1:2025 covers a wide range of safety considerations for metal AM PBF-LB machines, including:
- Protective Measures and Safeguards: Requirements for designing and implementing fixed and interlocked guards, electro-sensitive protective equipment, and safety control systems.
- Control Devices and Systems: Specification of control devices (start/stop, emergency stop, manual reset) and safe integration with electrical, pneumatic, and hydraulic components.
- Mechanical Hazard Prevention: Guidance on ensuring machine stability, restricting access to moving parts, and guarding against crushing and entanglement risks.
- Electrical and Laser Safety: Requirements for electrical enclosure protection, prevention of electrostatic discharges, and mitigation of hazards associated with laser radiation.
- Thermal, Vibration, and Noise Hazards: Strategies for preventing accidental contact with hot or cold surfaces, reducing vibration exposure, and controlling noise emissions to ensure a safe workspace.
- Powder Handling and Material Safety: Measures for safe handling and recovery of metallic powders, management of potentially hazardous particles, and controls for inert gas atmospheres.
- Ergonomic Hazards: Provisions for preventing operator fatigue, ensuring safe access for cleaning and maintenance, and reducing awkward postures.
- Verification and Compliance: Methods for verifying the implementation and effectiveness of safety requirements, including performance testing and noise emission measurements.
Applications
This standard delivers practical benefits for a range of stakeholders in the metal additive manufacturing ecosystem:
- Machine Designers and Manufacturers: Clearly defines technical and procedural requirements for embedding safety functions and protecting users.
- Machine Operators and Maintenance Personnel: Provides detailed instructions and best practices for safe daily operation, maintenance, and handling of hazardous materials.
- Safety and Compliance Officers: Aids in the risk assessment process, supports regulatory compliance, and facilitates workplace safety audits.
- System Integrators: Ensures seamless integration of PBF-LB machines within broader manufacturing environments while maintaining consistent safety standards.
- Procurement and Project Managers: Informs purchasing decisions by specifying required safety features and verification protocols.
Implementing ISO/ASTM 52938-1:2025 minimizes accident risks, supports compliance with occupational health and safety regulations, and bolsters confidence in using advanced PBF-LB metal additive manufacturing technologies.
Related Standards
For comprehensive safety and performance in additive manufacturing, consider these related standards:
- ISO/ASTM 52900:2021 - Additive manufacturing - General principles - Fundamentals and vocabulary
- ISO/ASTM 52931:2023 - Environment, health and safety requirements for AM machines using metallic feedstocks
- ISO 12100:2010 - Safety of machinery - General principles for design - Risk assessment and risk reduction
- ISO 13849-1:2023 & ISO 13849-2:2012 - Safety of machinery - Safety-related parts of control systems
- IEC 60204-1:2016 - Safety of machinery - Electrical equipment of machines
- ISO 11553-1:2020 - Safety of machinery - Laser processing machines - Laser safety requirements
By aligning with ISO/ASTM 52938-1:2025, organizations can enhance metal additive manufacturing safety, reduce liability, and contribute to a safer, compliant industrial landscape.
Keywords: ISO/ASTM 52938-1, additive manufacturing, PBF-LB safety, metal AM, laser powder bed fusion, machine safety, occupational health, industrial safety standards, metallic powder handling.