Alcatel-Lucent 1643 AMS Applications And Planning Manual page 20

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Use of controls, adjustments, and procedures other than those specified herein may
result in hazardous laser radiation exposure.
Laser Safety Precautions for Enclosed Systems
Under normal operating conditions, optical fiber telecommunication systems are
completely enclosed; nonetheless, the following precautions shall be observed:
1. Because of the potential for eye damage, technicians should not stare into optical
connectors or broken fibers
2. Under no circumstance shall laser/fiber optic operations be performed by a
technician before satisfactorily completing an approved training course
3. Since viewing laser emissions directly in excess of Class I/1 limits with an optical
instrument such as an eye loupe greatly increases the risk of eye damage,
appropriate labels must appear in plain view, in close proximity to the optical port
on the protective housing/access panel of the terminal equipment.
Laser Safety Precautions for Unenclosed Systems
During service, maintenance, or restoration, an optical fiber telecommunication system
is considered unenclosed. Under these conditions, follow these practices:
1. Only authorized, trained personnel shall be permitted to do service, maintenance
and restoration. Avoid exposing the eye to emissions from un-terminated, energized
optical connectors at close distances. Laser modules associated with the optical
ports of laser circuit packs are typically recessed, which limits the exposure
distance. Optical port shutters, Automatic Power Reduction (APR), and
Automatic Power Shut Down (APSD) are engineering controls that are also used to
limit emissions. However, technicians removing or replacing laser circuit packs
should not stare or look directly into the optical port with optical instruments or
magnifying lenses. (Normal eye wear or indirect viewing instruments such as
Find-R-Scopes are not considered magnifying lenses or optical instruments.)
2. Only authorized, trained personnel shall use optical test equipment during
installation or servicing since this equipment contains semiconductor lasers (Some
examples of optical test equipment are Optical Time Domain Reflectometers
(OTDR's), Hand-Held Loss Test Sets.)
3. Under no circumstances shall any personnel scan a fiber with an optical test set
without verifying that all laser sources on the fiber are turned off
4. All unauthorized personnel shall be excluded from the immediate area of the
optical fiber telecommunication systems during installation and service.
Consult ANSI Z136.2, American National Standard for Safe Use of Lasers in the U.S.;
or, outside the U.S., IEC-60825, Part 2 for guidance on the safe use of optical fiber
optic communication in the workplace.
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CAUTION
Laser hazard
Alcatel-Lucent - Proprietary
See notice on first page
365-312-801R7.2
Issue 3, May 2007
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