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Laser Safety Awareness

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Laser Safety Awareness Skilled Trades and Apprenticeship Division Henry Ford Community College Laser Safety Awareness Laser L Light A Amplification by S ... – PowerPoint PPT presentation

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Title: Laser Safety Awareness


1
Laser Safety Awareness
  • Skilled Trades and Apprenticeship Division
  • Henry Ford Community College

2
Laser Safety Awareness
  • Laser
  • L Light
  • A Amplification by
  • S Stimulated
  • E Emission of
  • R - Radiation

3
Laser Safety Awareness
  • Primary Source of Hazards
  • Radiation
  • Chemical Contamination
  • Electrical Contact
  • Secondary Hazards
  • Fire
  • Explosions
  • Coolant Contact

4
Laser Safety Awareness
  • Radiation
  • These injuries can affect any part of the body.
  • Your eyes are the most susceptible to injury.
  • Injuries typically permanent and often result in
    irreversible blindness.
  • Any exposed body part can receive undesired
    exposure.

5
Laser Safety Awareness
  • Chemical Contamination
  • Many lasers have chemical components
  • Chemical components can be extremely toxic
  • Hydrofluoric Acid
  • Hydrochloric Acid
  • Assorted Inert gases used to assist the process
  • Contamination presents HAZMAT situation!

6
Laser Safety Awareness
  • Electrical Contact
  • Lasers typically utilize low voltage applications
  • Less than 600 volts
  • Low voltage often means high amperage
  • Some lasers utilize high voltage applications
  • Regardless of voltage level, danger is present

7
Laser Safety Awareness
  • Secondary Hazards
  • These can be any of the typical hazards found in
    any manufacturing environment
  • Fire and explosions
  • From sparks and/or heat
  • Coolant contact
  • Extremely cold tanks and pipes
  • Noise
  • Gas assisted processes can be very noisy

8
Laser Safety Awareness
  • Classes of Lasers
  • Class I
  • Class IIa
  • Class II
  • Class IIIa
  • Class IIIb
  • Class IV

9
Laser Safety Awareness
  • Class I Laser
  • This is the laser beam with the least amount of
    power
  • They are not considered to present any danger
    from beam exposure
  • No safety precautions or PPE would be required

10
Laser Safety Awareness
  • Class IIa Laser
  • Low power visible laser
  • Not intended for prolonged viewing
  • Typically will not cause and physical damage even
    if viewed directly or in contact for short
    periods
  • Periods of less than 1000 seconds or about 15
    minutes

11
Laser Safety Awareness
  • Class II Lasers
  • Similar to the Class IIa Laser
  • Some potential, however, for damage to occur if
    viewed directly for extended periods
  • No special precautions or PPE would be required

12
Laser Safety Awareness
  • Class IIIa Lasers
  • Medium power lasers
  • Damage would not normally occur with momentary
    exposure
  • PPE would be required in the vicinity of the beam
  • Warning signs would be required

13
Laser Safety Awareness
  • Class IIIb Lasers
  • These lasers would typically cause damage if
    viewed directly
  • Even if it was for just a brief time
  • PPE would be required
  • Anti-reflective surfaces in area
  • Warning signs and barriers would be required

14
Laser Safety Awareness
  • Class IV Lasers
  • The most powerful and therefore the most
    dangerous
  • Power to ignite and vaporize any known substance
  • Direct exposure can cause immediate damage
  • Indirect exposure can cause immediate but
    undetected damage

15
Laser Safety Awareness
  • Class I Safety Considerations
  • Other than warning signs indicating a danger
    within the housing unit, no safety requirements
    are necessary.

16
Laser Safety Awareness
  • Class II Safety Considerations
  • Caution labels discouraging direct viewing
  • Indicator light indicating laser unit is on
  • Some Class II laser might recommend utilization
    of appropriate laser safety goggles

17
Laser Safety Awareness
  • Class III Safety Considerations
  • Proper laser safety goggles are a must if there
    is any chance of eye exposure
  • Where applicable, beam enclosure and beam
    terminations should be addressed
  • Effort should be made to keep the beam below
    sitting or above standing level
  • Explicit warning signs

18
Laser Safety Awareness
  • Class IV Considerations
  • Proper eye and exposed skin protection at all
    times
  • Flame retardant clothing might be required
  • Complete enclosure of the system with interlocks
    to shut it down if interlock is activated
  • Explicit warning signs

19
Laser Safety Awareness
  • Types of Lasers
  • Carbon Dioxide
  • NdYAG
  • Ruby
  • Excimer

20
Laser Safety Awareness
  • Laser Applications
  • Entertainment
  • Medical
  • Dental
  • Manufacturing
  • Construction
  • Measurement
  • Weaponry
  • Sci-fi

21
Laser Safety Awareness
22
Laser Safety Awareness
23
Laser Safety Awareness
24
Laser Safety Awareness
25
Laser Safety Awareness
26
Laser Safety Awareness
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