TM5-3810-305-10
Never use a work platform if
inspection indicates a structural
or mechanical fault of any kind.
Failure to follow this procedure
could cause DEATH or serious
injury.
a. Inspection: A complete inspection of the
LRT 110 Crane and the work platform
must be performed prior to any operation.
Inspection is to be performed daily or each
time the operator is replaced or the LRT
110 Crane is converted from material to
personnel handling.
Inspection must include the boom and all
mechanical and rigging equipment vital to
the safety of work platform operation.
Before a work platform suspended from a
load line may be used, the following
additional inspections must be performed:
Inspection of hook and wire rope.
Daily inspection of load line.
The anti-two block device must be
calibrated to sound a warning and
deactivate the control function bringing
about the two-blocking condition
whenever the hook block assembly,
platform or fall ball assembly is less
than 3 ft (914 mm) from the boom tip.
Inspect hook latches on fall ball
assemblies and sheave block assemblies
making certain they close and lock,
eliminating hook throat openings and
are full-load bearing hook latches with
l
l
l
manual trigger releases. As an
alternative, shackles with bolts, nuts
and retaining pins may be used.
Inspect wire rope ends making certain
they are properly anchored to boom,
fall ball, hook blocks and drums (refer
to page 2-3).
With the boom at maximum elevation
and the work platform on the ground or
at its lowest operational level, inspect
the hoist drum making certain at least
three wraps of wire rope remain.
Make certain the minimum safety
factors for wire rope are adhered to at
all times.
Use 7:1 as the minimum safety factor for
manufacturer’s specified wire rope and
10:1 as the minimum safety factor for
rotation resistant rope for the combined
weight of lifting attachments, platform,
personnel and tools.
b.
No personnel are permitted on
the work platform during the
performance of any test. Do not
allow personnel on work plat-
form if any test procedure indi-
cates a malfunction in equip-
ment. Failure to follow this
procedure could result in
DEATH or serious injury.
Testing: The following daily test proce-
dures are to be performed on the LRT 110
Crane and the work platform whenever the
operator changes or a significant change in
lifting conditions occurs.
1-44
