Bridge cranes with rated capacities of 20,000 lbs. or greater are classified as ______ cranes - Answer- Category 2
The expiration date that is of
... [Show More] particular importance to crane operators is - Answer- The certification expiration date of the crane
Who is primarily responsible for evaluating a Crane Operators physical and emotional fitness - Answer- crane operator
A monorail hoist with less than 20,000 lbs. capacity is a ________________ crane. - Answer- Category 3
Components that control, restrain, or position the load, and upon failure would cause dropping, shifting or uncontrolled movement of the loads are ____________. - Answer- load controlling parts
All of the following require a license to operate EXCEPT a: - Answer- Non-cab operated category 3-bridge crane
What is two-blocking and why is two-blocking dangerous? - Answer- Two-blocking occurs when the hook block comes in contact with the upper sheave block during hoisting of the hook. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load.
The formula for determining the area of a triangular shaped object is: - Answer- Base x Height divided by 2
When are operators required to perform a pre-use check of the crane? - Answer- Prior to the first use of the crane each day.
Regardless of the method of communication used all crane signals must be ____________________. - Answer- clear
Synthetic web slings should NOT be used in areas where temperatures exceed 194 degrees Fahrenheit. - Answer- True
If an object is 6 feet long, 5 feet wide, and 4 feet high, what is the volume of the object? - Answer- 120 cubic feet
Is it necessary for the operator to see the load or work area? - Answer- Not if there is a designated signal person who is in control of the lift and is in view of the operator, or if the signal giver is in constant radio contact with the operator.
What is "inching"? - Answer- Performing a motion very slowly, a little at a time
The majority of crane accidents are attributed to which of the following? - Answer- Personnel error
Crane operators at naval activities may be required to operate various types of cranes for which they hold a license. Which of the following can best assure operator proficiency and safety? - Answer- Be familiarized by a qualified person before operating the crane for the first time
Which of the following is NOT an acceptable method of communication between the signal person and the crane operator? - Answer- Signal Flags
Which of the following is used with a physical locking device placed at the energy source? - Answer- Lockout Tag
Which of the following is considered to be the best way the operator can ensure the crane is safe to operate on any given day? - Answer- Perform Daily Pre-use Checks
When crane accidents happen, you must do all of the following EXCEPT: - Answer- Continue to operate the crane until all lifts are completed
Components that provide protection for operation and maintenance personnel working on or in the path of cranes. - Answer- General Safety Devices
If the crane operator and the rigger in charge disagree on whether or not a load is safe to lift the operator should: - Answer- not operate the crane until contacting the supervisor to resolve the issue.
Components that support the load, and upon failure would cause dropping or uncontrolled lowering of the load are ____________. - Answer- load bearing parts
What is meant by "skewing"? - Answer- Where one end of the bridge gets ahead of the other end, frequently causing binding on the rails.
What are the principal parts of an overhead traveling crane? - Answer- Bridge girders, end trucks, trolley, and operator's cab or pendant control
Why shall sudden starts and stops of the bridge and trolley be avoided? - Answer- Sudden starts and stops could cause the trolley or bridge to derail
Select the proper method of landing a load. - Answer- Lower the load slowly, stop a few inches from the landing point, then slowly lower the rest of the way.
The crane operator must check the certification information on the crane for________ before operating the crane. - Answer- certification expiration date, crane ID, and certified capacity
What is the bridge crane communications hand signal pictured, with the palms up, fingers closed; thumb pointing in the direction of motion, and jerking horizontally? - Answer- Trolley travel
At what point during a lift may trolley or bridge travel be started? - Answer- When the tracks are clear and the load is high enough off the ground to pass over obstacles safely
What is the crane communications hand signal pictured, with the arm extended downward, forefinger pointing down, and moving the hand in a small horizontal circle? - Answer- Lower
Why should the hook be positioned directly over the load when attaching the load? - Answer- To avoid side loading and dragging the load as it is picked up
Bridge cranes with rated capacities of less than 20,000 lbs. are classified as ______ cranes. - Answer- Category 3
More than one signal person may provide signals to a crane operator at a time. - Answer- False
What is the crane communications hand signal pictured, with the arm extended, palm down, moving the arm back and forth horizontally? - Answer- Stop
A crane accident occurs when any element of the crane operating envelope fails to perform correctly during crane operations, maintenance, or testing which could result in any of the following EXCEPT: - Answer- NOT Two-Blocking or overload
NOT Personnel Injury or Death Equipment malfunction
Common modes of operation for typical OET bridge cranes are: - Answer- hoist, trolley, and bridge.
The crane operator is responsible for the pre-use ________ of the crane. - Answer- check
Shackles, wire rope slings, and /or eyebolts, may be used to their full capacity when used within ____ of vertical. - Answer- 5°
Which of the following formulas would be used to find the volume of a rectangular or square shaped 3 dimensional object? - Answer- Length X width X height
What should be done when leaving a crane at the end of the work shift? - Answer- Raise blocks into the upper limit switch
Ensure all controls are in the neutral or "off" position
Position the crane away from boarding platforms
Secure power
The crane operator STOPS the crane whenever ________ is in question. - Answer- safety
What is the purpose of a hoist limit switch? - Answer- To prevent overtravel of the hook block and the possibility of two-blocking
Knowing the load's approximate center of gravity prior to rigging or lifting a load is important: - Answer- All of the Above
What is the operator's main concern during crane operations? - Answer- Operating safely
Who can remove a danger, caution, or lockout tag? - Answer- NOT All crane maintenance personnel The person who attached the tag or his or her supervisor when they are not available
New shackles put into the weight handling equipment program are required to have all of the following markings on, or attached to the shackles EXCEPT: - Answer- Date of Manufacture
How should an operator check the hoist brakes when lifting a load? - Answer- Lift the load a few inches off the ground and stop hoisting to ensure there is no slippage of the [Show Less]