e.
Cracked, broken, or loose filter plates must be replaced IMMEDIATELY. Replace clear cover plate
when broken, pitted, or spattered.
f.
Flash goggles with side shields MUST be worn under the helmet to give some protection to the eyes
should the helmet not be lowered over the face before an arc is struck. Looking at an arc momentarily
with unprotected eyes (particularly a high intensity gas-shielded arc) can cause a retinal burn that may
leave a permanent dark area in the field of vision.
4-3.2.3
Protection of Nearby Personnel.
a.
Enclosed welding area. For production welding, a separate room or enclosed bay is best. In open
areas, surround the operation with low-reflective, non-combustible screens or panels. Allow for free air
circulation, particularly at floor level.
b.
Viewing the weld. Provide face shields for all persons who will be looking directly at the weld.
c.
Others working in area. See that all persons are wearing flash goggles.
d.
Before starting to weld, make sure that screen flaps or bay doors are closed.
4-3.3
Toxic Fume Prevention.
a.
Comply with precautions in 4-2.2.
b.
Generator engine exhaust must be vented to the outside air. Carbon monoxide can kill.
4-3.4
Fire and Explosion Prevention.
a.
Comply with precautions in 4-2.3.
b.
Equipment's rated capacity. Do not overload arc welding equipment. It may overheat cables and cause
a fire.
c.
Loose cable connections may overheat or flash and cause a fire.
d.
Never strike an arc on a cylinder or other pressure vessel. It creates a brittle area than can cause a
violent rupture or lead to such a rupture later under rough handling.
4-3.5
Compressed Gas Equipment. Comply with precautions in 4-2.4.
4-3.6
Shock Prevention.
a.
Exposed hot conductors or other bare metal in the welding circuit, or in ungrounded, electrically-HOT
equipment can fatally shock a person whose body becomes a conductor. DO NOT STAND, SIT, LIE,
LEAN ON, OR TOUCH a wet surface when welding, without suitable protection.
4-8
