Hoisting and Rigging Hazards Exam 2023 with complete
solution
The most important precaution in rigging and hoisting is ?
To determine load weight before attempting any lift.
Determine the available capacity of the equipment being used. Rig the load so
that it is stable. Remember that
(Unless the center of gravity of the load is directly below the hook, the load will shift)
Make allowances for any unknown factors. In addition, riggers must be aware of
common hazards as listed.
Working Load Limits (WLL) not known. Know the working load limits of the equipment
and tackle being used. Never exceed these limits.
Defective components.
Examine all hardware, equipment, tackle, and slings before use. Destroy any
defective components. Equipment merely discarded may be picked up and used
by someone unaware of its defects.
Unsafe equipment.
Do not use any equipment that is suspected to be unsafe or unsuitable until its
suitability has been verified by a competent person.
Hazardous wind conditions.
Never carry out any hoisting or rigging operation when winds create hazards for
workers, the general public, or property. Assess load size and shape to determine
whether high winds may cause problems. In particular, avoid handling loads that
present large wind-catching surfaces. Even though the weight of the load is
within the normal capacity of the equipment, high or gusting winds may prevent
proper control during the lift. Wind-loading can be critical to how the load is
rigged, lifted, and landed, with consequences for the safety of everyone involved.
Hazardous weather conditions.
When the visibility of riggers or hoist crew is impaired by snow, fog, rain, darkness, or
dust, strict supervision must be exercised and, if necessary, the lift should be
suspended. At sub-freezing temperatures, supervision must ensure that no part of the
hoisting device or tackle is shock-loaded or impacted, since brittle fracture of the steel
may result.
Electrical contact.
When working with or around cranes that are within a boom's length of any
powerline, ensure that a competent sign person is stationed at all times within
view of the operator to warn when any part of the machine or its load approaches
the minimum distances specified.
750 to 150,000 volts - 10 feet
150,001 to 250,000 volts - 15 feet
Over 250,000 - 20 feet
Be especially careful when working near overhead lines that have long spans. These
lines tend to swing laterally in the wind and can cause unexpected contact.
Hoist line not plumb.
The working load limits of hoisting equipment apply only to freely suspended
solution
The most important precaution in rigging and hoisting is ?
To determine load weight before attempting any lift.
Determine the available capacity of the equipment being used. Rig the load so
that it is stable. Remember that
(Unless the center of gravity of the load is directly below the hook, the load will shift)
Make allowances for any unknown factors. In addition, riggers must be aware of
common hazards as listed.
Working Load Limits (WLL) not known. Know the working load limits of the equipment
and tackle being used. Never exceed these limits.
Defective components.
Examine all hardware, equipment, tackle, and slings before use. Destroy any
defective components. Equipment merely discarded may be picked up and used
by someone unaware of its defects.
Unsafe equipment.
Do not use any equipment that is suspected to be unsafe or unsuitable until its
suitability has been verified by a competent person.
Hazardous wind conditions.
Never carry out any hoisting or rigging operation when winds create hazards for
workers, the general public, or property. Assess load size and shape to determine
whether high winds may cause problems. In particular, avoid handling loads that
present large wind-catching surfaces. Even though the weight of the load is
within the normal capacity of the equipment, high or gusting winds may prevent
proper control during the lift. Wind-loading can be critical to how the load is
rigged, lifted, and landed, with consequences for the safety of everyone involved.
Hazardous weather conditions.
When the visibility of riggers or hoist crew is impaired by snow, fog, rain, darkness, or
dust, strict supervision must be exercised and, if necessary, the lift should be
suspended. At sub-freezing temperatures, supervision must ensure that no part of the
hoisting device or tackle is shock-loaded or impacted, since brittle fracture of the steel
may result.
Electrical contact.
When working with or around cranes that are within a boom's length of any
powerline, ensure that a competent sign person is stationed at all times within
view of the operator to warn when any part of the machine or its load approaches
the minimum distances specified.
750 to 150,000 volts - 10 feet
150,001 to 250,000 volts - 15 feet
Over 250,000 - 20 feet
Be especially careful when working near overhead lines that have long spans. These
lines tend to swing laterally in the wind and can cause unexpected contact.
Hoist line not plumb.
The working load limits of hoisting equipment apply only to freely suspended
