RISK ASSESSMENT
QPP147 Section 2 Rev. March 07
B. HAZARDS WHEN
OPERATING THE CRANE
RISK CONTROLS & GENERAL PRECAUTIONS
B1. Structural failure or tip over of
the crane during operation.
B1. Do not exceed the lifting capacity of the crane. If unsure of the lifting capacity, always check
the rated lifting capacity chart. Lifting capacity varies with the boom length and working
radius.
Always check that all safety devices and warning systems are functioning properly. Do not
operate a crane if any of the safety devices and warning systems is faulty.
B2. Collision from swinging load or
reduced stability of the crane.
B2. Avoid sudden movement or violent operation of the crane. Operate the levers and pedals
smoothly. Start, accelerate, decelerate, slew and stop the crane smoothly and securely.
When lifting long loads tie a guide rope to each end of the load. This will prevent the load
from swinging whilst it is being lifted.
Compound operations, such as combining winch hoisting, slewing, boom derricking and
lowering will be slower than the individual operations. When switching from compound to
single operation, work the controls slowly and smoothly with no sudden change in speed or
direction.
B3. Crane damage and tip over from
using counterweights that are
not specified.
B3. Never use counterweights that do not conform to the specifications - this is forbidden (for
MAC-25 & AT-15 (N.Z. Spec.)). Counterweights not included in the specifications will
subject the crane to unreasonable strain and damage it.
B4. Collision if operator is not
concentrating on the job.
B4. Do not operate the crane if you are tired or cannot concentrate on the job.
Always be alert and watch that the boom or the suspended load does not collide with people or
buildings and the load does not collide with the boom.
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