Source: https://www.ecfr.gov/cgi-bin/text-idx?mc=true&node=se29.5.1910_1133&rgn=div8
Timestamp: 2019-11-17 16:33:16
Document Index: 748118094

Matched Legal Cases: ['art 1910', '§1910', '§1910', '§1910', '§1910', '§1910']

Title 29 → Subtitle B → Chapter XVII → Part 1910 → Subpart I → §1910.133
§1910.133 Eye and face protection.
(5) The employer shall ensure that each affected employee uses equipment with filter lenses that have a shade number appropriate for the work being performed for protection from injurious light radiation. The following is a listing of appropriate shade numbers for various operations.
Electrode Size 1⁄32 in.
Minimum* Protective Shade
Shielded metal arc welding Less than 3 Less than 60 7
3-5 60-160 8
5-8 160-250 10
More than 8 250-550 11
Gas metal arc welding and flux cored arc welding less than 60 7
60-160 10
160-250 10
Gas Tungsten arc welding less than 50 8
50-150 8
150-500 10
Air carbon (Light) less than 500 10
Arc cutting (Heavy) 500-1000 11
Plasma arc welding less than 20 6
100-400 10
400-800 11
Plasma arc cutting (light)** less than 300 8
(medium)** 300-400 9
(heavy)** 400-800 10
Carbon arc welding 14
Plate thickness—inches
Plate thickness—mm
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
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.
** These values apply where the actual arc is clearly seen. Experience has shown that lighter filters may be used when the arc is hidden by the workpiece.
(i) ANSI/ISEA Z87.1-2010, Occupational and Educational Personal Eye and Face Protection Devices, incorporated by reference in §1910.6;
(ii) ANSI Z87.1-2003, Occupational and Educational Personal Eye and Face Protection Devices, incorporated by reference in §1910.6; or
(iii) ANSI Z87.1-1989 (R-1998), Practice for Occupational and Educational Eye and Face Protection, incorporated by reference in §1910.6;
[59 FR 16360, Apr. 6, 1994; 59 FR 33911, July 1, 1994, as amended at 61 FR 9238, Mar. 7, 1996; 61 FR 19548, May 2, 1996; 74 FR 46356, Sept. 9, 2009; 81 FR 16090, Mar. 25, 2016]