Reference

OSHA 29 CFR 1910.252 governs every welding, cutting and brazing job in general industry, and it turns on numbers most welders have never been shown: a 35-foot combustible radius, a half-hour fire watch after the arc stops, and three separate conditions that force mechanical ventilation. This guide walks the job in order.

The right welding helmet protects your eyes from arc radiation while letting you actually see the puddle. This guide weighs auto-darkening against passive lenses, explains shade range and switching speed, covers arc sensors, viewing area, and grind mode, and walks a real MIG selection - all mapped to ANSI Z87.1 and Z49.1.