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Keep
a
clean
cover
glass
in front of the filter
plate
for the
protection thereof.
Frequent
renewal of these
cover
glasses
is
necessary,
since
they
become covered with spatter,
reducing
vision.
1-22.
CLOTHING
NEVER
use
poor,
inadequate,
or
worn-out
clothing.
Wear
heavy shoes, tightly
laced.
Keep clothing dry.
Proper
and
dry,
oil-free
clothing
is essential for the welders
protection.
Clothing
must not
only keep
off the spatter and
molten
particles,
but
must
also obstruct the rays of the
arc
and,
when necessary, insulate the
body
from harmful electri
cal
currents.
Wear
leather
or
asbestos
gloves
at
all times
to
protect the
hands and wrists. Dark colored shirts
are
preferred
to
light
ones
because
light
ones
reflect
arc
rays
to
exposed
parts of
the
body.
In the
case
of
gas shielded-arc
welding, light
colors
are
more
reflective and may
cause
eye burns due
to
the in
tense
ultra-violet rays
given
of f
by
the process. Avoid
cotton
fabrics when
gas
shielded-arc
welding.
An
arc
burn
on
the skin resembles
a
sunburn,
except that it is
usually
more
severe.
Clothing
can
be made flame resistant
by
treatment
with
a
solution of 3/4
pound
of sodium
stannate
in
1
gallon
of water,
then
wrun9
out
and
dipped
in
a
solution of
1/4
pound
ammonium
sulphate
per
gallon
of
water.
Dont
wash
clothing
so
prepared
in water,
but
dry
clean.
When
welding operations
are
to
be
performed
in vertical and
overhead
positions,
leather
sleevelets.
aprons, and in
some
cases
leggings
and
ear
plugs
should be used
to
prevent
severe
burns from spatter and molten metal.
1-23. HOT METAL BURNS
NEVER
pick
up
pieces
of metal which have
just
been welded
or
heated,
or
the stub ends of electrodes which have been
discarded.
1-24. GRINDING AND CHIPPING
NEVER
do
any
chipping
or
grinding
without
protective
goggles.
(Figure
1-10)
Whenever it is necessary
to
grind
or
chip metal,
wear
protec.
tive
goggles specifically designed
for this purpose. Serious eye
injuries
may
result from failure
to
wear
protective
goggles.
1-25. COMPRESSED GAS CYLINDERS
NEVER strike
an
arc on
a
compressed
gas
cylinder. Always
observe the
following
precautions
in
regards
to
compressed
g~
cylinders:
1.
Avoid accidental
contact
of the
electrodes,
electrode
holder,
or
other
electrically energized
parts
with
a
compressed
gas
cylinder
or
any
other
pressure vessel.
Serious accidents
or
fires
may
result.
2.
Use
I.C.C.
or
DOT.
cylinders. They
are
manufactured
and
maintained
in
accordance with
DOT.
require
ments
and
are
safe
so
long
as
they
are
properly
hayidled.
Dont
drop cylinders.
3.
Identify
gas
content
by
the
name
marked
on
the
cylin
der. If the
cylinder
is
unmarked,
do
not
use
it. Return
it
to
the
supplier.
Do
not
rely
on
a
color code.
4.
Never
use
a
cylinder
or
its
contents
for other than
intended
purposes.
5.
Keep
oil and grease
away
from oxygen
cylinders
and
cylinder
valves.
6.
Keep
cylinders
away
from exposure
to
sparks,
hot
slag,
open flame and all
possible
sources
of
ignition
or
excessive heat.
7.
Be careful that
cylinders
are
not
placed
so
as
to
be
come
a
part of
an
electrical circuit. Avoid third
rails,
wires and electric
welding
circuits.
8.
When
transporting cylinders by
crane,
use
cradle
plat
form
or
other suitable support.
9.
Never lift the
cylinders by slings, by
the caps
or
by
electric magnets.
Never
use
cylinders
as
supports
or
rollers.
Never try
to
mix any gases in
a
cylinder.
Never try
to
refill
a
cylinder.
Mark
or
tag empty
cylinders Empty
or
MT.
Send
Emptys
back
to
the
supplier promptly.
15,
15.
Keep
Emptys
and Fulls
separate.
16.
Never tamper with
or
alter
cylinder
numbers
or
other
markings.
This is
not
only
foolish but
may
be
illegal.
Do
not
tamper with
or
change fittings
on
cylinders.
If valves
cannot
be
opened by hand,
do
not
use
ham
mer
or
wrench.
Notify supplier,
19.
Protect
cylinder
valves from
bumps, falls,
falling
ob
jects,
and
from
weather.
Keep
them covered with
cylinder
caps
when
moving cylinders.
Keep
valves closed
on
empty
cylinders.
See that
your
cylinders
are
clear of passageways and
active work
areas
and
that
they
are
secured
against
falling,
22.
If
adapter
is
required
between
cylinder
and
regulator,
always
use
a
standard
adapter.
These may be obtained
from
your
supplier.
Where
right
and left hand threads
are
used
on
adapter,
use
two
wrenches
to
insure leak
proof
connections.
23.
Do
not
store
cylinders
in unventilated
areas.
NEVER
pick
up hot
objects. (Figure
1-9)
10.
11.
12.
13.
14.
Figure
1-9.
Never
pick
up hot
objects
17,
18.
20,
21.
Figure
1-10. Never do
any
chipping
or
grinding
without
protective goggles.
Page
4
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