Automatically upon opening any of the interlocks described in item 5.ĥ.Automatically upon electrical power failure, and.If any emergency 'Beam Off' button (item 6) is depressed.Laser-resistant beam shutter that blocks the laser beam, activated:

Protective eyewear station inside the lab near the main entrance, and within the curtained enclosure (item 2) if so equipped, so that personnel may put on appropriate protective eyewear before proceeding into the Class 4 laser areaĤ. Curtained entryway enclosure composed of fabric sufficiently fire-resistant to prevent combustion when hit by the enclosed laser beam, at the primary entrance to the laser lab arranged such that, when closed, it fully protects the doorway from stray beams that might otherwise be transmitted out the doorģ. Illuminated 'Laser On' warning sign, posted at each entrance to the laser laboratory, that is activated when the laser tube is energizedĢ. The responsible Principal Laser Users for each Class 4 system should incorporate as many of these design features as appropriate/applicable into their laboratories, or work with the Laser Safety Manager to achieve the same level of protection with alternate control measures.ġ.

This Design Guide does not apply to clinical use lasers. This document is intended to provide general design and engineering guidance for the development and installation of safety controls in laboratories containing Class 4 laser systems.

Research laboratory design guide