Laser and General Safety Training Test
of Concepts
Refer to
http://www.phys.ksu.edu/personal/macf/safety-training/
For each question
check all answers that apply!
Structure of the eye
- Which types of eye injuries can be caused by exposure to laser beams?
o Burns to the cornea
o Burns to the retina
o Cataracts (opacity in the eye lens)
o Photobleaching in the fovea
o Photokaratitis (opacitiy and irritation in the cornea)
o Tearing of the retina
- Where in the eye is light from the KLS laser principally deposited?
o Cornea
o Lens
o Vitreous humor
o Retina
- Where in the eye is light from the LUMOS EDFA principally deposited?
o Cornea
o Lens
o Vitreous humor
o Retina
- Where in the eye is light from a CO2 laser (LUMOS, CSU) principally deposited?
o Cornea
o Lens
o Vitreous humor
o Retina
- What wavelength ranges of laser light are capable of damaging the retina?
o visible (400-760 nm)
o ultraviolet A band (315-400 nm)
o ultraviolet B bands (280-315 nm)
o ultraviolet C bands (100-280 nm)
o infrared A band (760-1400 nm)
o infrared B bands (1,400-3,000 nm)
o infrared C bands (3,000-1,000,000 nm)
- Which
o KLS
o CSU L2
o CSU L3
o LUMOS Santec
o LUMOS HeNe
o MOTRIMS EDFA
o MOTRIMS Repump
- Which
o KLS
o CSU CO2
o LUMOS EDFA
o MOTRIMS TDA
o CSU Pump
o LUMOS CrFosterite
- For which types of lasers will your eye’s natural blink response not give you any protection from an injurious exposure?
o All UV lasers
o Pulsed lasers with pulse times shorter than your blink time
o IR-B and IR-C lasers
o IR-A lasers
Personal protective
equipment
Blue goggles
Pink goggles
Brown goggles
Grey goggles
- Laser protective eyewear:
o should have the highest O.D. possible
o is only necessary if you are looking directly into the lasers
o is wavelength specific
o is only necessary when adjusting the laser
- Where are protective eye ware for IR-B wavelength exposure found in the Macdonald lab?
o Outside the KLS
o Outside LUMOS
o In the control room next to the radiation-badge board
- Which lasers goggles should be worn when working with a beam from the KLS fiber (short pulse)?
o Blue
o Pink
o Brown
o Grey
- Which lasers goggles should be worn when working with a frequency doubled beam from the KLS?
o Blue
o Pink
o Brown
o Grey
- Which lasers goggles should be worn when aligning a CO2 laser (LUMOS or CSU)?
o Blue
o Pink
o Brown
o Grey
- Which lasers goggles will prevent you from reading red LED displays?
o Blue
o Pink
o Brown
o Grey
- What potential hazard is indicated by a blue warning
lamp in the
o Ionizing radiation
o Laser light
o High voltage
o Fire or low oxygen
What
potential hazard is indicated by the red flashing light show to the right?
o Ionizing radiation
o Laser light
o High voltage
o Fire or low oxygen
- What potential hazard is indicated by a flashing white light shown in the picture?
o 
Ionizing radiation
o Laser light
o High voltage
o Fire or low oxygen
- There is a warning indicator panel outside the entrance to the KLS that gives information concerning the laser beams in use inside the room. If the Pump warning (blue LED) is on, which goggles should be worn when going into KLS?
o Blue
o Pink
o Brown
o Grey
- What should be done to determine whether a closed radiation/laser gate is being used for protection from laser light, and therefore can be safely bypassed and opened by a person wearing proper eyewear, or as protection from penetrating radiation, in which case it should no be opened as long as the radiation is present?
o Contact the accelerator operator.
o Look for a lighted “Caution Beam On” sign.
o Look for a flashing white light near the gate.
o Look for current information on the status whiteboards at the lab entrance.
o Look at the radiation monitor panel in the control room.
- What color goggles should be worn in KLS when neither the “short-pulse” LED nor the “Pump” LED is flashing on the warning panel outside the KLS entry door?
o Blue
o Brown
o Grey
o Pink
o No goggles are necessary
- Curtain barriers should be closed
o at all times.
o when the laser is running and the outside door is bypassed.
o when the laser is not running.
o only when the laser is running at its highest power.
- When working in the KLS, you should
o Wear goggles according to the status LED’s outside the lab door.
o Block the input beam when moving optics.
o Never look directly into a laser beam even when wearing safety goggles.
o Align the beam without taking off your watch, rings, or other metal jewelry.
- What kinds of hazards could be induced if the people working in the KLS do not follow appropriate operating procedures?
o Eye damage
o Skin damage
o High-voltage shock
o Fire
- The reflection of a laser beam from a watch or jewelry is
o Specular.
o Diffuse.
o Completely absorbed by the metal.
o Never a hazard to lab personnel.
- What procedures minimize hazards when aligning laser beams or setting up new laser beam paths?
o Always work at full laser power to ensure beam stability.
o Block the input beam when adding or removing an optic in the beam path.
o Place a beam block in the path of a new optic until it is adjusted to steer the beam into the proper place.
o Check for stray beams after adding an optic to a beam path.
o Remove your goggles when using IR cards or other laser viewing aids.
- new question