Podcast
Questions and Answers
Cranes and derricks installed on floating surfaces must have a ____ placed where it can be easily seen by the proctors.
Cranes and derricks installed on floating surfaces must have a ____ placed where it can be easily seen by the proctors.
boom angle indicator
When is it acceptable to use a personnel platform to raise and lower workers?
When is it acceptable to use a personnel platform to raise and lower workers?
Other means of access would be more dangerous or impossible.
Which of the following is an example of conditions that may limit the load rating of a crane?
Which of the following is an example of conditions that may limit the load rating of a crane?
- The crane is in good condition
- The crane is not on level ground (correct)
- The crane is operating within its limits
- The weather conditions are stable
The ____ oversees and directs all crane assembly and disassembly operations.
The ____ oversees and directs all crane assembly and disassembly operations.
Which of the following could cause a crane to topple even when lifting loads within its maximum range?
Which of the following could cause a crane to topple even when lifting loads within its maximum range?
____ are the wheels on a crane with open grooves that ropes or cables fit around.
____ are the wheels on a crane with open grooves that ropes or cables fit around.
_____ refers to the point in an object around which its weight is evenly distributed.
_____ refers to the point in an object around which its weight is evenly distributed.
When must a signal person be used?
When must a signal person be used?
A ____ provides something to hold onto should a personnel platform shift unexpectedly.
A ____ provides something to hold onto should a personnel platform shift unexpectedly.
Flashcards
Boom Angle Indicator
Boom Angle Indicator
Shows the angle of the crane's boom, ensuring it operates within safe limits.
Personnel Platform Use
Personnel Platform Use
Using a personnel platform is acceptable when conventional access is too dangerous or not feasible.
Crane Load Rating Factors
Crane Load Rating Factors
Not being on level ground can compromise the stability and load capacity of a crane.
Assembly/Disassembly Director
Assembly/Disassembly Director
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Inadequate Ground Conditions
Inadequate Ground Conditions
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Sheaves
Sheaves
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Center of Gravity
Center of Gravity
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When to Use a Signal Person
When to Use a Signal Person
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Grab-rail
Grab-rail
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Study Notes
Cranes and Derricks
- Boom angle indicator must be clearly visible to proctors on cranes and derricks installed on floating surfaces.
- Personnel platforms may be used to raise/lower workers when other access methods are deemed more dangerous or impossible.
Load Ratings and Conditions
- Cranes may have limited load ratings due to being on uneven or non-level ground.
- Inadequate ground conditions can lead to crane toppling even if loads are within maximum range.
Safety and Oversight
- An assembly/disassembly director is responsible for overseeing all crane assembly and disassembly operations.
- A signal person is required when the crane operator’s view is obstructed to ensure safety during operations.
Crane Components
- Sheaves are the wheels on a crane that have open grooves for ropes or cables.
- The center of gravity is the point where an object's weight is evenly distributed, vital for safe lifting.
Safety Features
- A grab-rail is essential on personnel platforms to provide support in the event of unexpected shifts.
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