105 CMR, § 121.006
All persons installing, operating, using, maintaining, repairing or servicing an optical fiber communication system utilizing laser diode or light emitting diode ("LED") sources shall do so in accordance with the requirements set forth in the most recently published version of the publication published by ANSI entitled American National Standard for Safe Use of Optical Fiber Communication Systems Utilizing Laser Diodes And LED Sources and known and referred to as "ANSI Z136.2". In addition, the owner and operator of the laser facility in which such laser or laser system is installed or operated shall also be responsible for ensuring that the laser facility and the operation of the facility meets the requirements of said ANSI Z136.2.
105 CMR, § 121.006