TM 55-203
l.
Material must be properly secured before
h.
Reaching or leaning out more than an arm's
machine work is performed on it.
length from the edge of a ladder, scaffold, or platform is
prohibited.
m.
Using the hand to remove chips, cuttings, or
scale from a drill, a press, or other machine is
i.
It is prohibited for personnel to "walk" a
prohibited.
ladder while on it.
n.
Grinding on the side of an emery wheel or a
j.
A stepladder should be opened fully and the
grindstone, unless the side is designed for that purpose,
spreaders set before it is used.
is prohibited A tool rest should not be more than 1/8 inch
k.
When a ladder is used within the swing of a
from the wheel.
door or so as to obstruct a doorway, the door will be
o.
All setscrews or keys in revolving spindles
locked or secured in a closed or an open position.
or shafts must be flush or countersunk.
l.
Placing a ladder on a track or in intertrack
p.
Using a power ripsaw not equipped with a
space, unless protection is provided, is prohibited.
spreader is prohibited.
m.
Using a ladder lengthened by splicing two
q.
A push stick of sufficient length will be used
short ladders Is prohibited.
to feed short pieces of wood or ends of long pieces
21-12. Working on or About Machinery
through and clear or a power ripsaw. Using fingers for
this purpose is prohibited.
a.
Operating machinery or equipment, unless
authorized to do so, is prohibited.
r.
Personnel must stand to the side of a power
ripsaw to avoid being struck in the event of a kickback.
b.
Removing safety guards from saws, emery
wheels, gears, or other parts of machinery, except for
s.
Loose or scrap material must be kept away
the purpose of making repairs, is prohibited.
from the saw blade.
c.
Operating a machine or an appliance
t.
On woodworking machinery, all offbearing
without safety guards or with safety guards out of
operations should be performed on the end opposite to
position, except for test purposes or while making
the feed or away from the cutting edge or side of the
repairs, is prohibited.
too].
d.
Machinery must not be repaired, cleaned,
u.
Standing directly in front of an overhead
oiled, or adjusted while in operation, except for oiling or
swing saw while it is being operated is prohibited.
adjusting powerplant machinery or other equipment
v.
When operating bar shears, placing the
requiring continuous operation.
hand between stock and shear guard is prohibited.
e.
Standing, climbing, or riding on a moving
Tongs will be used for material too short to be held down
machine or motor is prohibited. Being on or inside a
by the guard.
guardrail of a moving machine is prohibited.
21-13. Working on or About Cars
f.
Repairing, dismantling, or assembling a
a.
Before a drop-bottom car door is opened, all
motor-driven machine without first opening the power
personnel must be clear of the door on the opposite side
switch and placing a "Danger-Do not operate" sign on
of the car.
the switch is prohibited. In case of a machine driven
from a line shaft, the belt must be removed or the belt
b.
Using a wrench to hold a door-winding
shifter tied in the "off" position and a DANGER sign
mechanism, while the pawl is being released from the
placed on the machine.
ratchet, is prohibited. The pawl will be knocked from the
ratchet and, if necessary, unwound with a ratchet or a
g.
A drive motor must be shut down and
self-adjusting car wrench. Using the fingers to release a
allowed to come to a stop before blades or dies on a
pawl from a ratchet is prohibited.
shears, punch, or forging machine are changed. h.
Stepping through or reaching between moving belts is
c.
The use of any wrench other than a ratchet
prohibited. i. Operating a machine with a defective belt
or a self-adjusting car wrench when operating a door-
shifter or with a "creeping" belt, or placing the hand on a
winding mechanism of a drop-bottom or hopper car is
moving belt, is prohibited.
prohibited. (This does not apply to a man closing a door
on an empty car in a classification yard. )
j.
It is prohibited for personnel to wear rings
while operating machines.
d.
Placing hands or fingers in the jamb or on
the frame of a drop-bottom or hopper car door, or using
k.
While machinery is being operated, gloves
the hands to swing or close a hopper door having a wind
may not be worn, unless authorized by the supervisor.
type lock, is prohibited.
21-6
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