CATEGORY 3 NON-CAB OPERATED CRANE
SAFETY 2026/2027 DETAILED VERIFIED
ANSWERS / EXAM QUESTIONS WILL COME
FROM HERE (100% CORRECT ANSWERS/ A+
GRADED
What may cause the bridge to skew - ANSWER-Wheel slippage on one side only
because of a slippery track, or a heavy load suspended from one end of the bridge.
What is two-blocking and why is two-blocking dangerous? - ANSWER-Two-
blocking occurs when the hook block comes into 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.
What is the formula for determining the area of a triangular shaped object? -
ANSWER-Base x Height divided by 2
When is it permissible for an operator to leave the controls of a crane while a load
is suspended from the hook? - ANSWER-The operator shall remain at the controls
at all times while a load is suspended from the hook.
Regardless of the method of communication used, all crane signals must be -
ANSWER-Clear
What is the weight of a 24 square foot, 2-inch-thick aluminum plate with a unit
weight of 15 lbs. per square foot of material per inch of thickness? - ANSWER-
720lbs
Synthetic web slings should NOT be used in areas where temperatures exceed 194
degrees Fahrenheit. - ANSWER-True
Which of the following identifies the two categories of crane lifts? - ANSWER-
Complex and Non-Complex
What is inching? - ANSWER-Performing a motion very slowly, a little at a time
,While performing a pre-use check, the operator must check the wire rope system
for all of the following except? - ANSWER-Size and grade of wire rope
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
What is the minimum amount of rope that shall be on a grooved drum and a
smooth drum? - ANSWER-2 full wraps, 3 full wraps
Which of the following is used with a physical locking device placed at the energy
source? - ANSWER-Lockout tag
Components that affect the safety and capability of the WHE by stopping or
limiting the operation when activated are - ANSWER-Operational safety devices
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
What signal may an operator obey from a person other than the designated signal
giver? - ANSWER-Stop or Emergency Stop
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-Skewing is where one end of the bridge
gets ahead of the other end frequently causing binding on the rails.
The expiration date that is of particular importance to crane operators is? -
ANSWER-The certification expiration date of the crane
, CATEGORY 3 NON-CAB OPERATED CRANE
SAFETY QUESTIONS & ANSWERS
A floating crane with a capacity of 200,000lbs. is a ________________ crane. -
ANSWER-Category 1
What is the category of a jib crane with a capacity of less than 20,000 pounds? -
ANSWER-Category 3
An OET, Bridge crane with a capacity of 80,000lbs. is a ________________ crane.
- ANSWER-Category 2
A commercial truck mounted crane with a capacity of 14,000 lbs. is a __________
crane. - ANSWER-category 4
What types of power does a Category 1 or 4 crane generally use and what is its
source? - ANSWER-Electric or hydraulic power supplied by a diesel engine
Load - ________ parts are those that restrain position or control the movement of
the load. - ANSWER-controlling
A hook is what type of component? - ANSWER-Load-Bearing Part
Hydraulic foot brakes are what type or group of components? - ANSWER-Load-
Controlling Parts
Load - _____________ parts are those that support the load. - ANSWER-bearing
How is electrical current conveyed from the revolving portion of the crane to the
lower crane structure? - ANSWER-Through the collector ring system
Safety devices that provide protection for personnel and equipment are considered
_____________ safety devices. - ANSWER-general
, Safety devices that affect the safe load lifting and handling capabilities of
equipment are considered __________________ safety devices. - ANSWER-
operational
Which of the following does not affect the safe operation of the crane? -
ANSWER-General Safety Devices
A travel alarm is what type or group of components? - ANSWER-
A travel alarm is what type or group of components? - ANSWER-General Safety
Device
During the walk around check you notice a loose bolt on the crane. You should: -
ANSWER-Notify your supervisor of the deficiency.
The crane Pre-use Check consists of: - ANSWER-A walk around visual check
Performing a "No load" operational
It is the operator's responsibility to report a deficiency to the Crane Department. -
ANSWER-false
Deficiencies are required to be reported by the end of the shift. - ANSWER-false
If the upper limit switch is working correctly, there is no need to check the lower
limit switch. - ANSWER-fasle
Part of the no load operational check is to ensure the proper _________ of all
controls. - ANSWER-function
What is the most important reason to do a pre-use check? - ANSWER-To make
sure the crane is safe to use.
Documented checks are required for which of the following Category 3 cranes? -
ANSWER-gantry
wall
bridge
SAFETY 2026/2027 DETAILED VERIFIED
ANSWERS / EXAM QUESTIONS WILL COME
FROM HERE (100% CORRECT ANSWERS/ A+
GRADED
What may cause the bridge to skew - ANSWER-Wheel slippage on one side only
because of a slippery track, or a heavy load suspended from one end of the bridge.
What is two-blocking and why is two-blocking dangerous? - ANSWER-Two-
blocking occurs when the hook block comes into 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.
What is the formula for determining the area of a triangular shaped object? -
ANSWER-Base x Height divided by 2
When is it permissible for an operator to leave the controls of a crane while a load
is suspended from the hook? - ANSWER-The operator shall remain at the controls
at all times while a load is suspended from the hook.
Regardless of the method of communication used, all crane signals must be -
ANSWER-Clear
What is the weight of a 24 square foot, 2-inch-thick aluminum plate with a unit
weight of 15 lbs. per square foot of material per inch of thickness? - ANSWER-
720lbs
Synthetic web slings should NOT be used in areas where temperatures exceed 194
degrees Fahrenheit. - ANSWER-True
Which of the following identifies the two categories of crane lifts? - ANSWER-
Complex and Non-Complex
What is inching? - ANSWER-Performing a motion very slowly, a little at a time
,While performing a pre-use check, the operator must check the wire rope system
for all of the following except? - ANSWER-Size and grade of wire rope
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
What is the minimum amount of rope that shall be on a grooved drum and a
smooth drum? - ANSWER-2 full wraps, 3 full wraps
Which of the following is used with a physical locking device placed at the energy
source? - ANSWER-Lockout tag
Components that affect the safety and capability of the WHE by stopping or
limiting the operation when activated are - ANSWER-Operational safety devices
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
What signal may an operator obey from a person other than the designated signal
giver? - ANSWER-Stop or Emergency Stop
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-Skewing is where one end of the bridge
gets ahead of the other end frequently causing binding on the rails.
The expiration date that is of particular importance to crane operators is? -
ANSWER-The certification expiration date of the crane
, CATEGORY 3 NON-CAB OPERATED CRANE
SAFETY QUESTIONS & ANSWERS
A floating crane with a capacity of 200,000lbs. is a ________________ crane. -
ANSWER-Category 1
What is the category of a jib crane with a capacity of less than 20,000 pounds? -
ANSWER-Category 3
An OET, Bridge crane with a capacity of 80,000lbs. is a ________________ crane.
- ANSWER-Category 2
A commercial truck mounted crane with a capacity of 14,000 lbs. is a __________
crane. - ANSWER-category 4
What types of power does a Category 1 or 4 crane generally use and what is its
source? - ANSWER-Electric or hydraulic power supplied by a diesel engine
Load - ________ parts are those that restrain position or control the movement of
the load. - ANSWER-controlling
A hook is what type of component? - ANSWER-Load-Bearing Part
Hydraulic foot brakes are what type or group of components? - ANSWER-Load-
Controlling Parts
Load - _____________ parts are those that support the load. - ANSWER-bearing
How is electrical current conveyed from the revolving portion of the crane to the
lower crane structure? - ANSWER-Through the collector ring system
Safety devices that provide protection for personnel and equipment are considered
_____________ safety devices. - ANSWER-general
, Safety devices that affect the safe load lifting and handling capabilities of
equipment are considered __________________ safety devices. - ANSWER-
operational
Which of the following does not affect the safe operation of the crane? -
ANSWER-General Safety Devices
A travel alarm is what type or group of components? - ANSWER-
A travel alarm is what type or group of components? - ANSWER-General Safety
Device
During the walk around check you notice a loose bolt on the crane. You should: -
ANSWER-Notify your supervisor of the deficiency.
The crane Pre-use Check consists of: - ANSWER-A walk around visual check
Performing a "No load" operational
It is the operator's responsibility to report a deficiency to the Crane Department. -
ANSWER-false
Deficiencies are required to be reported by the end of the shift. - ANSWER-false
If the upper limit switch is working correctly, there is no need to check the lower
limit switch. - ANSWER-fasle
Part of the no load operational check is to ensure the proper _________ of all
controls. - ANSWER-function
What is the most important reason to do a pre-use check? - ANSWER-To make
sure the crane is safe to use.
Documented checks are required for which of the following Category 3 cranes? -
ANSWER-gantry
wall
bridge
