Classification of Large Laser-Based Materials Processing Machines with Walk-In Workstations
This guidance addresses the classification and protective housing requirements for large laser-based materials processing machines, specifically those with walk-in workstations. It clarifies when such equipment can be classified as Class I laser products despite having enclosures large enough for human entry.
Recommended Actions
- Implement adequate protective housing that prevents human access when closed
- Install safety interlocks according to the standard requirements
- Develop and implement a detection system for human presence within the enclosure
- Create clear user documentation regarding safety procedures
- Apply appropriate warning labels to the enclosure
- Ensure the product is classified in the lowest possible class while maintaining functionality
- Document compliance with all safety requirements for Class I laser product classification
- Establish verification procedures to ensure all safety systems function as intended
Key Considerations
Human Factors
- A means must be provided to detect the presence of persons within the enclosure and/or prevent laser operation when someone is inside
Labelling
- The enclosure must be properly labeled as required by the standard
- User information must clearly instruct operators to avoid procedures that could give access to hazardous levels of laser radiation
Safety
- The enclosure must be adequate to prevent human access to laser radiation when closed
- Safety interlocks must be implemented as required by the standard
- The protective housing must prevent access to laser or collateral radiation except when necessary for the product’s intended function
Other considerations
- Products should be classified in the lowest possible class while still accomplishing their intended function
- Large workstation enclosures can be considered as protective housing despite being room-sized
Relevant Guidances
- Laser Products - Conformance with IEC 60825-1 Ed. 3 and IEC 60601-2-22 Ed. 3.1 Standards
- Laser Illuminated Projectors (LIPs) - Classification, Safety Requirements and Labeling
- Laser Products - Performance Standards and Safety Requirements
- Content and Format Requirements for Medical Laser 510k Submissions
Related references and norms
- No specific norms or standards are referenced in this guidance
Original guidance
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