a. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower
platform support and leads the lifting sling through the fixed pulley.
b. Installation engineer B places the fiber coiler for coiling optical fibers on the fiber spools,
and installation engineer D lead the lifting sling through the stretch sling of the optical
fibers and use the other sling as a traction sling to secure the cables 4 m (13.12 ft) away
from the lifting sling, as shown in
Figure 2 Binding optical fibers
(1) Lifting sling
NOTICE:
Do not remove the stretch sling and protection pipe or bind optical fibers using one sling, as
shown in
.
Figure 3
Figure 3 Incorrect binding method
.
Figure 2
(2) Stretch sling
(3) Traction sling
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