Ans: burn to the skin produced by brief exposure to intense radiant heat and ultraviolet
light
2). Bonded
Ans: the permanent joining of metallic parts to form an electrically conductive path
that will assure electrical continuity and the capacity to safely conduct any current likely
to be imposed on it
3). Carbon steel
Ans: an alloy of iron combining iron and usually less than 1 percent carbon to provide
hardness
4). Electric arc
Ans: the flow of an electrical current across an air gap or gaseous space
5). Electrically grounded
Ans: connected to Earth or to some conducting body that serves in place of the earth
6). Electrode
Ans: the point from which a welding arc is produced
7). Flash burn
Ans: burns to the eyes sometimes called welder's flash; caused by exposure to intense
radiant heat and ultraviolet light
8). Flux
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, Ans: a material used to dissolve or prevent the formation of oxides and other
undesirable substances on a weld joint
9). Fume plume
Ans: the fumes, gases, and particles from the consumables, base metal, and base
metal coating during the welding process
10). Galvanized
Ans: carbon steel dipped in zinc to inhibit corrosion
11). Immediate danger to life and health (idlh)
Ans: as defined by OSHA, this term refers to an atmosphere that poses an immediate
threat to life, would cause irreversible adverse health effects, or would impair an
individual's ability to escape from a dangerous atmosphere
12). Purge gas
Ans: an inert gas, such as nitrogen, used to drive oxygen away from a weld site
13). Shielding gas
Ans: a gas such as argon, helium, or carbon dioxide used to protect the welding
electrode wire from contamination in GMAW and FCAW welding
14). Stainless steel
Ans: an iron-based alloy usually containing at least 11 percent chromium
15). Ultraviolet (uv) radiation
Ans: invisible rays capable of causing burns. UV rays from the sun are the causes of
sunburn
16). Ventricular fibrillation
Ans: irregular heart rhythm characterized by a rapid fluttering heartbeat
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