3.1 The physical location of the embedded laser source and access point within the laser product should be identified in the documents provided to users.
4. Equipment, including beam diagnostic or alignment tools, should be designed to prevent injury from all lasers during normal operation, and should minimize risk of injury during maintenance or service. Potential exposures should be controlled in the following order of reference.
4.1 Engineering controls (e.g. enclosures, shielding, filters, use of fiber optics to transmit energy, interlocks).
4.2 Temporary enclosure or control measure for maintenance, service, and non-routine task.
4.3 Administrative controls (e.g. written warning, standard operating procedure, labeling).
4.4 Personal protective equipment.