29 C.F.R. § 1915.153
(a) General requirements.
(4) The employer shall ensure that each affected employee uses equipment with filter lenses that have a shade number that provides appropriate protection from injurious light radiation. Table I-1 is a listing of appropriate shade numbers for various operations. If filter lenses are used in goggles worn under a helmet which has a lens, the shade number of the lens in the helmet may be reduced so that the shade numbers of the two lenses will equal the value as shown in Table I-1, § 1915.153.
| Operations | Electrode size 1/32 in | Arc current | Minimum *protectiveshade |
|---|---|---|---|
| Shielded metal arc welding | Less than 33-55-8More than 8 | Less than 6060-160160-250250-550 | 781011 |
| Gas metal arc welding and flux cored arc welding | Less than 6060-160160-250250-500 | 7101010 | |
| Gas Tungsten arc welding | Less than 5050-150150-500 | 8810 | |
| Air carbon | (Light) | Less than 500 | 10 |
| Arc cutting | (Heavy) | 500-1000 | 11 |
| Plasma arc welding | Less than 2020-100100-400400-800 | 681011 | |
| Plasma arc cutting | (light) **(medium) **(heavy) ** | Less than 300300-400400-800 | 8910 |
| Torch brazing | 3 | ||
| Torch soldering | 2 | ||
| Carbon arc welding | 14 | ||
| ** These values apply where the actual arc is clearly seen. Lighter filters may be used when the arc is hidden by the workpiece. |
| Operations | Plate thickness—inches | Plate thickness—mm | Minimum *protectiveshade |
|---|---|---|---|
| Gas Welding: | |||
| Light | Under 1/8 | Under 3.2 | 4 |
| Medium | 1/8 to 1/2 | 3.2 to 12.7 | 5 |
| Heavy | Over 1/2 | Over 12.7 | 6 |
| Oxygen cutting: | |||
| Light | Under 1 | Under 25 | 3 |
| Medium | 1 to 6 | 25 to 150 | 4 |
| Heavy | Over 6 | Over 150 | 5 |
| * As a rule of thumb, start with a shade that is too dark to see the weld zone. Then go to a lighter shade which gives sufficient view of the weld zone without going below the minimum. In oxyfuel gas welding or cutting where the torch produces a high yellow light, it is desirable to use a filter lens that absorbs the yellow or sodium line in the visible light of the (spectrum) operation. |
(b) Criteria for protective eye and face devices.
(1) Protective eye and face protection devices must comply with any of the following consensus standards:
[61 FR 26352, May 24, 1996,, as amended at 74 FR 46358, Sept. 9, 2009; 81 FR 16091, Mar. 25, 2016; 85 FR 8732, Feb. 18, 2020]