29 CFR § 1910.251 - Definitions.
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§ 1910.251 Definitions.
As used in this subpart:
(a) Welder and welding operator mean any operator of electric or gas welding and cutting equipment.
(b) Approved means listed or approved by a nationally recognized testing laboratory. Refer to § 1910.155(c)(3) for definitions of listed and approved, and § 1910.7 for nationally recognized testing laboratory.