AWS Welding Safety & OSHA Regulations 2

Question 1

OSHA's permissible exposure limit (PEL) for manganese fume in welding environments is:

Accepted Answer

0.2 mg/m³ as a ceiling value

Answer

OSHA's PEL for manganese fume is 0.2 mg/m³ as a ceiling value — this limit must not be exceeded at any time during the work shift.

Question 2

A welding fume extraction system should position the capture hood at what distance from the welding arc?

Accepted Answer

2–4 inches from the arc source to capture fumes before they rise

Answer

Local exhaust ventilation (LEV) capture hoods should be positioned 2–4 inches from the welding arc to capture fumes at the source before they reach the welder's breathing zone.

Question 3

Which OSHA standard governs general industry welding, cutting, and brazing?

Accepted Answer

29 CFR 1910 Subpart Q

Answer

29 CFR 1910 Subpart Q covers Welding, Cutting and Brazing in general industry. Construction welding falls under 29 CFR 1926 Subpart J.

Question 4

Confined space welding hazards include oxygen deficiency, fire/explosion risk from shielding gas accumulation, and:

Accepted Answer

Toxic fume concentration that can rapidly reach dangerous levels

Answer

In confined spaces, welding fumes accumulate rapidly and can quickly exceed safe exposure limits since there is no natural dilution ventilation, creating an immediately dangerous to life and health (IDLH) atmosphere.

Question 5

The auto-darkening welding lens (ADF) must meet which ANSI standard for welding eye protection?

Accepted Answer

ANSI Z87.1

Answer

Welding helmets and auto-darkening filters must meet ANSI Z87.1 — the standard for occupational and educational personal eye and face protection devices.

AWS Practice Test

AWS Practice Test

AWS Welding Safety & OSHA Regulations 2