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Laser User Training (class 3b + 4) Initial and Annual

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William Perkins

This document provides training on laser safety. It discusses that this training is required annually for personnel working with or exposed to certain classes of lasers. It defines lasers and their uses. It outlines maximum exposure limits based on laser class, with classes 3 and 4 posing risks of eye and skin damage. It discusses reducing exposure through protective gear, hygiene, work practices, and training, including engineering controls, safe work procedures, and health effects recognition.

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1 Lasers Skin or tissue surface damage inducer
Applicability ? This training is required for all personnel routinely working with or potentially exposed to Class 1M, 2M, 3R, 3B or 4 laser radiation and shall be accomplished in conjunction with initial training and re-accomplished annually, training shall be documented on AF Form 55 or electronic equivalent ? This training meets the requirements of AFI 48-139 and ANSI Z136.1 for Class 3B and Class 4 laser users ? If you have questions regarding this training, please contact your Unit or Installation Laser Safety Officer 2
3 What are Lasers? ? Light Amplified by Stimulated Emission of Radiation ? Lasers are extremely focused light ? Three primary characteristics ? Monochromatic ? Coherent ? Focused
4 Lasers are used in: ? Surveying work ? Surgery and other medical applications ? Construction ? Communications ? Research
5 Maximum Exposure Limits Based on Laser Type ? Class 1 ¨C Normal aversion methods (blinking, turning of the head) are enough to prevent damage. ? Class 2 - An exposure duration less than or equal to 0.25 seconds. Normal aversion methods (blinking, turning of the head) are normally enough to prevent damage.
6 Exposure Limits continued ? Class 3 ¨C Avoid any exposure. Aversion methods (blinking, turning of the head) aren¡¯t sufficient to prevent eye damage. ? Class 4 ¨C Avoid any exposure. Aversion methods (blinking, turning of the head) aren¡¯t sufficient to prevent eye damage. Skin damage and fire hazard.
Nominal Hazard Zone ? Maximum Permissible Exposure (MPE) ? Nominal Hazard Zone = Safety Distance 7
8 Reduce Your Exposure Following we will discuss how we are minimizing your exposure to lasers, and how you can further protect yourselves through the use of: ?Protective Gear ?Hygiene ?Work Practices ?Training
9 Health Precautions Protective Gear The intensity of the beam and the ability of structures in the eye to either absorb laser energy or amplify beam power underscore the importance of using the appropriate eye protection. ? Eye protection is suggested for working with any class 3 or higher laser type. ? All Class 3B and 4 laser users must use eye protection designed for that specific wavelength and optical density.
10 Health Precautions continued Protective Gear continued ? Skin protection (work uniform and/or gloves) is suggested whenever working with Class 3 and 4 lasers. ? Suitable respirators or eye protection is suggested whenever there is a chance for particulate exposure.
11 Health Precautions continued Hygiene and Work Practices ? With Class 1 and 2 lasers, normal aversion methods are sufficient to prevent damage. ? With Class 3 and 4 lasers, damage can occur before any aversion method occurs. ? Avoid fumes and materials produced by laser usage. Other hazards may be produced by laser welding or cutting.
12 Training Practices You can further reduce your exposure to lasers through training on: ?Engineering Practices ?Work Practices ?Use of Protective Gear ?Health Effects Recognition
13 Training Practices Engineering Practices ? Adequate ventilation shall be installed to reduce noxious or potentially hazardous fumes and vapors. ? Areas using class 3b or 4 lasers must be isolated and exhibit signs detailing the potential skin or eye damage. ? Shielding should be applied where applicable.
14 Training Practices continued Engineering Practices continued ? Windows should have necessary coverings. ? Beam shutters, beam polarizers, and beam filters should always be used to limit exposure. ? Lasers unable to be seen with the naked eye should have audible or visible warning signs to show when in use.
15 Training Practices continued Work Practices to Limit Exposure ? Avoid any chance to be directly exposed. ? Stop all lasers with a specified beam block. ? Erect shielding to prevent reflections or exposure. ? Light in the work area should be as bright as optimal for work, as the pupil would be the smallest then. ? All non-necessary reflective surfaces should be minimized.
16 Training Practices continued Use of Protective Equipment ? Eye and skin protection for Class 3 and 4 lasers. ? Gloves when handling laser media and materials used by or produced by lasers. ? Respirator if necessary for fumes and vapors produced.
17 Training Practices continued Occupational Health Surveillance Workers will be advised about any local requirements for medical qualification or occupational health examination.
18 Training Practices continued Learn to Recognize Signs of Adverse Health Effects ? Short Term ? Long Term
19 Potential Health Effects Short Term ? Redness, itchiness, or burning upon skin. ? Redness, watery eyes, minor to permanent eye damage. Minor vision impairment to blindness. ? Eye, nose, and throat irritation ? Nausea, or vomiting ? Nasal congestion ? Chest tightness ? Abdominal cramping ? General flu-like symptoms, and fatigue.
20 Potential Health effects Long Term ? Chronic exposure may cause cataracts and permanent eye damage.
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Laser User Training (class 3b + 4) Initial and Annual

  • 1. 1 Lasers Skin or tissue surface damage inducer
  • 2. Applicability ? This training is required for all personnel routinely working with or potentially exposed to Class 1M, 2M, 3R, 3B or 4 laser radiation and shall be accomplished in conjunction with initial training and re-accomplished annually, training shall be documented on AF Form 55 or electronic equivalent ? This training meets the requirements of AFI 48-139 and ANSI Z136.1 for Class 3B and Class 4 laser users ? If you have questions regarding this training, please contact your Unit or Installation Laser Safety Officer 2
  • 3. 3 What are Lasers? ? Light Amplified by Stimulated Emission of Radiation ? Lasers are extremely focused light ? Three primary characteristics ? Monochromatic ? Coherent ? Focused
  • 4. 4 Lasers are used in: ? Surveying work ? Surgery and other medical applications ? Construction ? Communications ? Research
  • 5. 5 Maximum Exposure Limits Based on Laser Type ? Class 1 ¨C Normal aversion methods (blinking, turning of the head) are enough to prevent damage. ? Class 2 - An exposure duration less than or equal to 0.25 seconds. Normal aversion methods (blinking, turning of the head) are normally enough to prevent damage.
  • 6. 6 Exposure Limits continued ? Class 3 ¨C Avoid any exposure. Aversion methods (blinking, turning of the head) aren¡¯t sufficient to prevent eye damage. ? Class 4 ¨C Avoid any exposure. Aversion methods (blinking, turning of the head) aren¡¯t sufficient to prevent eye damage. Skin damage and fire hazard.
  • 7. Nominal Hazard Zone ? Maximum Permissible Exposure (MPE) ? Nominal Hazard Zone = Safety Distance 7
  • 8. 8 Reduce Your Exposure Following we will discuss how we are minimizing your exposure to lasers, and how you can further protect yourselves through the use of: ?Protective Gear ?Hygiene ?Work Practices ?Training
  • 9. 9 Health Precautions Protective Gear The intensity of the beam and the ability of structures in the eye to either absorb laser energy or amplify beam power underscore the importance of using the appropriate eye protection. ? Eye protection is suggested for working with any class 3 or higher laser type. ? All Class 3B and 4 laser users must use eye protection designed for that specific wavelength and optical density.
  • 10. 10 Health Precautions continued Protective Gear continued ? Skin protection (work uniform and/or gloves) is suggested whenever working with Class 3 and 4 lasers. ? Suitable respirators or eye protection is suggested whenever there is a chance for particulate exposure.
  • 11. 11 Health Precautions continued Hygiene and Work Practices ? With Class 1 and 2 lasers, normal aversion methods are sufficient to prevent damage. ? With Class 3 and 4 lasers, damage can occur before any aversion method occurs. ? Avoid fumes and materials produced by laser usage. Other hazards may be produced by laser welding or cutting.
  • 12. 12 Training Practices You can further reduce your exposure to lasers through training on: ?Engineering Practices ?Work Practices ?Use of Protective Gear ?Health Effects Recognition
  • 13. 13 Training Practices Engineering Practices ? Adequate ventilation shall be installed to reduce noxious or potentially hazardous fumes and vapors. ? Areas using class 3b or 4 lasers must be isolated and exhibit signs detailing the potential skin or eye damage. ? Shielding should be applied where applicable.
  • 14. 14 Training Practices continued Engineering Practices continued ? Windows should have necessary coverings. ? Beam shutters, beam polarizers, and beam filters should always be used to limit exposure. ? Lasers unable to be seen with the naked eye should have audible or visible warning signs to show when in use.
  • 15. 15 Training Practices continued Work Practices to Limit Exposure ? Avoid any chance to be directly exposed. ? Stop all lasers with a specified beam block. ? Erect shielding to prevent reflections or exposure. ? Light in the work area should be as bright as optimal for work, as the pupil would be the smallest then. ? All non-necessary reflective surfaces should be minimized.
  • 16. 16 Training Practices continued Use of Protective Equipment ? Eye and skin protection for Class 3 and 4 lasers. ? Gloves when handling laser media and materials used by or produced by lasers. ? Respirator if necessary for fumes and vapors produced.
  • 17. 17 Training Practices continued Occupational Health Surveillance Workers will be advised about any local requirements for medical qualification or occupational health examination.
  • 18. 18 Training Practices continued Learn to Recognize Signs of Adverse Health Effects ? Short Term ? Long Term
  • 19. 19 Potential Health Effects Short Term ? Redness, itchiness, or burning upon skin. ? Redness, watery eyes, minor to permanent eye damage. Minor vision impairment to blindness. ? Eye, nose, and throat irritation ? Nausea, or vomiting ? Nasal congestion ? Chest tightness ? Abdominal cramping ? General flu-like symptoms, and fatigue.
  • 20. 20 Potential Health effects Long Term ? Chronic exposure may cause cataracts and permanent eye damage.