CAUTION
DO NOT RELY ON THE BOOM
ANGLE INDICATOR FOR RADIUS
ACCURACY WHEN LIFTS EXCEED 75
PERCENT OF THE RATED CAPACITY.
MEASURE TO AVOID THE POSSIBILITY
OF ERROR.
NOTE: Capacity charts do not apply if the
machine has been modified in any way. Rated
capacity is based on the machine as it was originally
manufactured and equipped.
Safe Lifting
The following factors will give you some basic
guidelines of what you must know to perform safe
daily crane operations:
1.
2.
3.
4.
5.
6.
7.
8.
9.
1 0.
11.
12.
13.
Determine the weight to be lifted and the
crane required to make the lift safely.
Travel the proposed route the crane will
follow to and from the project site, and
complete the Crane Lift Checklist.
Obtain the travel permits if required.
Brief operators and riggers on the specifics of
the lift and travel conditions.
Inspect the crane area setup for stability and
safe operating area.
Fully extend the outriggers and use them
according to the manufacturer’s instructions.
Check the machine for levelness.
Inspect slings, spreader bars, and all other
hardware being used.
Select the proper sling with sufficient
capacity rating.
Center the sling in the base (bowl) of the
hook to avoid hook point loading, and ensure
that the hook block is always placed over the
center of the load to eliminate shock loading
of the slings or cranes resulting from load
shifts when a lift is made.
Make ample safety allowances for unknown
factors.
Stand clear of and do not walk under
suspended loads.
Boom deflection.
deflection. When
All crane booms have
the load is lifted off the
14.
15.
ground, the boom will deflect causing the
radius to increase.
Increased radius may
cause overloading of the crane.
Clean operating area. Water coolers, excess
tools, grease, soda cans, and other un-
necessary items should be located outside the
operating area of the crane. Water coolers
must be kept off the crane to prevent people
from walking around the crane when in
operation.
Weight on outriggers. On lattice booms,
about 60 percent of the load is on the
outriggers close to the load. On hydraulic
cranes during near capacity lifts at high boom
angles, about 60 percent of the load is on
outriggers away from the load.
ATTENTION: SAFE LIFTING IS PARA-
MOUNT! PROJECT COMPLETION MUST NOT
INTERFERE WITH SAFE CRANE OPERATIONS!
Training
For deployed units, COMSECOND/COM-
THIRDNCBINST 11200.1 series requires biweekly
crane operation and safety meetings be conducted.
The meetings review crane operations and include
general safety, minimum rigging procedures, crane
and rigging responsibilities, and upcoming lifts. The
Alfa company commander, crane test director, crane
supervisor and operators/riggers should attend the
meetings.
Mishap Reporting
In addition to the requirements outlined in
COMSECOND/COMTHIRDNCBINST 5100.1
series, any mishap involving NCF cranes must be
reported by message to the COMTHIRDNCB DET,
Port Hueneme, California, or the COMSECONDNCB
DET, Gulfport, Mississippi.
WIRE ROPE SLINGS AND RIGGING
HARDWARE
The use of slings, hooks, spreader bars, shackles,
and so forth, for lifting is a vital link in the
weight-handling process. An in-depth management
program for the maintenance and use of slings is
required to ensure the entire weight-handling
operations are performed safely and professionally.
The crane crew supervisors are responsible for the
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