1926.1102—Coal tar pitch volatiles; interpretation of term.
(a) General.
(1)
Employees shall be provided with eye and face protection equipment when machines or operations present potential eye or face injury from physical, chemical, or radiation agents.
(2)
Eye and face protection equipment required by this part shall meet the requirements specified in American National Standards Institute, Z87.1-1968, Practice for Occupational and Educational Eye and Face Protection.
(3)
Employees whose vision requires the use of corrective lenses in spectacles, when required by this regulation to wear eye protection, shall be protected by goggles or spectacles of one of the following types:
(ii)
Goggles that can be worn over corrective spectacles without disturbing the adjustment of the spectacles;
(4)
Face and eye protection equipment shall be kept clean and in good repair. The use of this type equipment with structural or optical defects shall be prohibited.
(5)
Table E-1 shall be used as a guide in the selection of face and eye protection for the hazards and operations noted.
Code of Federal Regulations
Code of Federal Regulations
*Non-side shield spectacles are available for limited hazard use requiring only frontal protection.
**See Table E-2, in paragraph (b) of this section, Filter Lens Shade Numbers for Protection Against Radiant Energy.
| Operation | Hazards | Recommended protectors: Bold type numbers signify preferred protection |
|---|---|---|
| Acetylene—Burning, Acetylene—Cutting, Acetylene—Welding | Sparks, harmful rays, molten metal, flying particles | 7, 8, 9. |
| Chemical Handling | Splash, acid burns, fumes | 2, 10 (For severe exposure add 10 over 2). |
| Chipping | Flying particles | 1, 3, 4, 5, 6, 7A, 8A. |
| Electric (arc) welding | Sparks, intense rays, molten metal | 9, 11, (11 in combination with 4, 5, 6, in tinted lenses, advisable). |
| Furnace operations | Glare, heat, molten metal | 7, 8, 9 (For severe exposure add 10). |
| Grinding—Light | Flying particles | 1, 3, 4, 5, 6, 10. |
| Grinding—Heavy | Flying particles | 1 , 3, 7A, 8A (For severe exposure add 10). |
| Laboratory | Chemical splash, glass breakage | 2 (10 when in combination with 4, 5, 6). |
| Machining | Flying particles | 1, 3, 4, 5, 6, 10. |
| Molten metals | Heat, glare, sparks, splash | 7, 8, (10 in combination with 4, 5, 6, in tinted lenses). |
| Spot welding | Flying particles, sparks | 1, 3, 4, 5, 6, 10. |
(i)
They shall provide adequate protection against the particular hazards for which they are designed.
(7)
Every protector shall be distinctly marked to facilitate identification only of the manufacturer.
(8)
When limitations or precautions are indicated by the manufacturer, they shall be transmitted to the user and care taken to see that such limitations and precautions are strictly observed.
(b) Protection against radiant energy—
(1) Selection of shade numbers for welding filter.
Table E-2 shall be used as a guide for the selection of the proper shade numbers of filter lenses or plates used in welding. Shades more dense than those listed may be used to suit the individual's needs.
| Welding operation | Shade number |
|---|---|
| Shielded metal-arc welding 1/16-, 3/32-, 1/8-, 5/32-inch diameter electrodes | 10 |
| Gas-shielded arc welding (nonferrous) 1/16-, 3/32-, 1/8-, 5/32-inch diameter electrodes | 11 |
| Gas-shielded arc welding (ferrous) 1/16-, 3/32-, 1/8-, 5/32-inch diameter electrodes | 12 |
| Shielded metal-arc welding 3/16-, 7/32-, 1/4-inch diameter electrodes | 12 |
| 5/16-, 3/8-inch diameter electrodes | 14 |
| Atomic hydrogen welding | 10-14 |
| Carbon-arc welding | 14 |
| Soldering | 2 |
| Torch brazing | 3 or 4 |
| Light cutting, up to 1 inch | 3 or 4 |
| Medium cutting, 1 inch to 6 inches | 4 or 5 |
| Heavy cutting, over 6 inches | 5 or 6 |
| Gas welding (light), up to 1/8-inch | 4 or 5 |
| Gas welding (medium), 1/8-inch to 1/2-inch | 5 or 6 |
| Gas welding (heavy), over 1/2-inch | 6 or 8 |
(2) Laser protection.
(i)
Employees whose occupation or assignment requires exposure to laser beams shall be furnished suitable laser safety goggles which will protect for the specific wavelength of the laser and be of optical density (O.D.) adequate for the energy involved. Table E-3 lists the maximum power or energy density for which adequate protection is afforded by glasses of optical densities from 5 through 8.
| Intensity, CW maximum power density (watts/cm2) | Attenuation | |
|---|---|---|
| Optical density (O.D.) | Attenuation factor | |
| 10−2 | 5 | 10 5 |
| 10−1 | 6 | 10 6 |
| 1.0 | 7 | 10 7 |
| 10.0 | 8 | 10 8 |
Output levels falling between lines in this table shall require the higher optical density.
(a) The laser wavelengths for which use is intended;
(b) The optical density of those wavelengths;
(c) The visible light transmission.