SAFETY INFORMATION
5540F/YB5515 OPERATOR’S MANUAL
2-8
Published 10-21-2011, Control # 055-03
boom to decrease the load radius. Never lower or extend the
boom; this will aggravate the condition.
Use tag lines whenever possible to help control the
movement of the load.
When lifting loads, the crane will lean toward the boom and
the load will swing out, increasing the load radius. Ensure the
crane’s capacity is not exceeded when this occurs.
Do not strike any obstruction with the boom. If the boom
should accidentally contact an object, stop immediately.
Inspect the boom. Remove the crane from service if the
boom is damaged.
Never push or pull with the crane boom.
Avoid sudden starts and stops when moving the load. The
inertia and an increased load radius could tip the crane over
or cause it to fail structurally.
Use only one hoist at a time when lifting loads.
Always use enough parts-of-line to accommodate the load to
be lifted. Lifting with too few parts-of-line can result in failure
of the wire rope.
Counterweight
On cranes equipped with removable counterweights, ensure
the appropriate counterweight sections are properly installed
for the lift being considered.
Do not add material to the counterweight to increase
capacity. United States Federal law prohibits modification or
additions which affect the capacity or safe operation of the
equipment without the manufacturer’s written approval.
[29CFR 1926.1434]
Outrigger Lift Off
Regarding “lifting” of an outrigger pad during craning
activities, be advised that the rated loads for these cranes,
as indicated on the crane’s
Load Chart
, do not exceed 85%
of the tipping load on outriggers as determined by SAE J765
OCT80 “Cranes Stability Test Code.” An outrigger pad may
lift off the ground during operation of the crane within the
capacity limits of the
Load Chart
, yet the crane will not have
reached instability. The “balance point” for stability testing
according to SAE and Manitowoc criteria is a condition of
loading wherein the load moment acting to overturn the
crane is equal to the maximum moment of the crane
available to resist overturning. This balance point or point of
instability for a crane does not depend on “lifting” of an
outrigger but rather on comparison of the “opposing” load
moments.
The occurrence of an outrigger lifting from the ground is often
attributed to the natural flex in the crane’s frame. This may
happen when lifting a load in certain configurations within the
capacity limits of the
Load Chart
and is not necessarily an
indication of an unstable condition.
Provided the crane is properly set up, the crane is in good
working condition, that all operator’s aids are properly
programmed, that the qualified crane operator adheres to
the instructions found in the applicable
Load Chart
,
Operator’s Manual
and decals on the crane, the crane
should not be unstable.
Multiple Crane Lifts
Multiple crane lifts are not recommended.
Any lift that requires more that one crane must be precisely
planned and coordinated by a qualified engineer.
If it is necessary to perform a multi-crane lift, the operator
shall be responsible for assuring that the following minimum
safety precautions are taken:
•
Secure the services of a qualified engineer to direct the
operation.
•
Use one qualified signal person.
•
Coordinate lifting plans with the operators, engineer, and
signal person prior to beginning the lift.
•
Maintain communication between all parties throughout
the entire operation. If possible, provide approved radio
equipment for voice communication between all parties
engaged in the lift.
•
Use cranes and rigging of equal capabilities and use the
same boom length.
•
Use outriggers on cranes so equipped.
•
Be certain cranes are of adequate lifting capacity.
•
Calculate the amount of weight to be lifted by each crane
and attach slings at the correct points for proper weight
distribution.
•
Ensure the load lines are directly over the attach points
to avoid side loading and transfer of loading from one
crane to the other.
•
Do not travel
. Lift only from a stationary position.
ELECTROCUTION HAZARD
To avoid death or serious injury, keep all parts of the crane,
rigging and load at least 20 feet (6 meters) away from any
e n e r g i z e d p o w e r l i n e . Yo u
m u s t
f o l l o w t h e O S H A
requirements set forth in 29CFR 1926.1407 through
1926.1411.
This crane is not designed or equipped for use within 10 feet
( 3 m e t e r s ) o f e n e r g i z e d p o w e r l i n e s [ R e f e r t o
29CFR1926.1410 Table A]. If operation within 10 feet (3
meters) of any power lines cannot be avoided, the power
utility
must
be notified and the power lines
must
be de-
energized and grounded
before
performing any work.
Reference Only
