b. Metalworking with its many related activities is an important function in a
maintenance unit. The mission of these various units could not be fully and
efficiently accomplished without personnel qualified in metalworking. The
techniques and procedures presented in this lesson are by no means the answer to
all problems encountered in the field; however, the procedures covered have been
proved by long usage.
SECTION II.
SAFETY
2. GENERAL. Great care should be taken in handling any type of welding
equipment to prevent personnel injury from fire, explosions, or harmful agents.
Both general and specific safety precautions listed below must be strictly observed
by workers who weld or cut metals.
a. Do not permit unauthorized persons to use welding or cutting equipment.
b. Do not weld in building with wooden floors, unless the floors are protected
from hot metal by means of asbestos fabrics, sand, or other fireproof material.
Be sure that hot sparks or hot metal will not fall on the legs and feet of the
operator or on any welding equipment components.
c. Remove all flammable material such as cotton, oil, gasoline, etc, from the
vicinity of welding.
d. Before welding or cutting warn those in close proximity who are not
protect-ed by proper clothing or goggles.
e. Remove assembled parts that may become warped or otherwise damaged by the
welding process.
f. Do not leave hot, rejected electrode studs, steel scrap, or tools on the
floor about the welding equipment. These may cause accidents.
g. Keep a suitable fire extinguisher conveniently located at all times.
h. Mark all hot metal after welding operations are completed.
3.
PROTECTION OF THE EYES AND SKIN.
a. General. Protective clothing and equipment must be worn during welding
operations. During all oxyacetylene welding and cutting processes, operators will
use safety goggles to protect the eyes from heat, glare, and flying fragments of
hot metals. During all electric welding processes, operators will use safety
goggles and a hand shield or helmet equipped with a suitable filter glass
(depending upon the size of the welding rods or the magnitude of the welding or
cutting current) to protect against the intense ultraviolet and infrared rays.
When others are in the vicinity of electric welding processes, the area must be
screened so that the arc cannot be seen either by direct vision or by reflection
from glass, metal, or other materials which reflect these rays.
(1) Woolen clothing should be worn instead of cotton, because the wool is
not easily burned or damaged by weld metal spatter,
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