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Instrument Specific
Safety Instructions

Intent

The purpose of this document is to inform the user of the specific hazards associated with operating the IODP Laser Core Liner engraver. This is not a user manual.

Classifications and Hazards

The system as designed and operated with the safety interlocks, is a Class I system and requires no PPE to use.

However...

Operation of the Keyence ML-Z9500 CO2 Laser dismounted from the cabinet or with the safety interlocks defeated, poses a serious threat to the user. In this configuration the system becomes a Class IV system and requires special PPE and protocols to be in place per TAMU EHSD policy. Unless specific permission from the Lab Officer (Laser Safety Officer) is given, all IODP personnel are prohibited from using this system in this configuration!

In addition to the laser hazard, the engraving process creates both fumes and particulates that are potentially hazardous. To prevent exposure, make sure that the exhaust system is on and drawing with sufficient volume to clear any hazardous material from the cabinet. Also, do not open the cabinet until you have visually confirmed that all hazardous fumes have been removed. Should the exhaust system fail, do the following:

  • Keep the cabinet door closed.
  • Post a notice on the door that the system is offline until further notice.
  • Turn off power to the laser.
  • Notify the Lab Office or Assistant Lab officer on duty.
  • Call 209 and report the exhaust system failure to the ECR.


Safety Systems

The laser engraver is equipped with multiple layers of safety. Non-emergency shutdowns can be executed via software commands built into the LazerKatjie or Marking Builder applications. For an emergency shut-down, the system is equipped with an Emergency Stop button mounted on the side of the cabinet. Use of the emergency stop button will require a reboot of the ML-Z9500's controlling PLC which is done by cycling the key switch to the "off" position and then back to the "ready" position. This step prevents an automatic restart of the laser once the stop button is reset.

Engraver Emergency Stop

Opening the cabinet door and tripping the safety interlock will close the internal shutter and power down the laser. A reboot of the PLC will be required before the system is ready to engrave.

Before operating the engraver you need have

  • Completed the TAMU EHSD online Laser Safety course.
  • Completed the safety test.
  • Read this document.
  • Read the user manuals for the software in use.
  • Completed a verbal orientation by the Lab Officer regarding the specific hazards.

Change

20230202 fackler Do not presently have attribution for this document. Verbatim repeats the printed original at the Engraver.

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