Schwing SPB 28, Operation Manual

Page: 60 / 216

GENERAL RULE S
PAGE 30
700+ smgr.fm
S AF ETY M AN U AL
7.17
In vertical runs, the weight of the vertical sections of pipe must
be supported by a thrust block (often called a deadman, Figure 38) or other load-
bearing device. Each section of pipeline in a vertical run must be secured from
lateral and horizontal movement.
7.18
If you will be unable to see the point of placement, establish a
system of communications with the workmen who will be there. Arrange for radio
communications, a system of visual or auditory signals (lights or bells), or a sig-
nalperson (Figure 39). If a signalperson is used,
agree on hand signals before
beginning the pour! (ACPA recommended hand signals are shown on page 82 of
this book.)
7.19
Never leave the machine unattended when it is running or ready
to run. If you must leave the area, you must leave someone to monitor the unit.
This is especially critical if there are children in the vicinity.
WARNING
deadman2.eps
Thrust block
(deadman)
Lateral & horizontal
movement restraint
Figure 38
A thrust block (deadman)
WARNING
Figure 39
Arrange communications before starting
trlrsptr.eps
WARNING