Schwing SPB 28, Operation Manual

Page: 66 / 216

GENERAL RULE S
PAGE 36
700+ smgr.fm
S AF ETY M AN U AL
8.12
Watch for power lines that are not directly in the area of the
pour. Accidents can happen when moving between points of placement, or when
moving the boom after the pour is completed (Figure 47).
Never let down your
guard when the boom is in the air!
8.13
High voltage makes conductors out of materials that would
normally not conduct ! Many nonconductors will conduct enough current to kill
you if you contact the 8000 volts to ground that is normally found on residential
power lines in the United States (Figure 48). Voltage may be higher than 8000,
especially in industrial areas.
DANGER
shckbhnd.eps
Slewing Radius
of the Boom
Slab you
poured
High-Voltage
Power Lines
Minimum of 20-foot
clearance from wires.
(50-foot if over 350 Kv)
clnotdgr2.eps
Extremely hazardous area that is
within the slewing radius of the boom.
Figure 47
Never let down your guard
when moving the boom
DANGER
Figure 48
Even poor conductors will conduct high voltage
nonconductors
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