A floating crane with a capacity of 200,000lbs. is a ________________ crane.

Category 1

What is the category of a jib crane with a capacity of less than 20,000 pounds?

Category 3

An OET, Bridge crane with a capacity of 80,000lbs. is a ________________ crane.

Category 2

A commercial truck mounted crane with a capacity of 14,000 lbs. is a __________ crane.

category 4

What types of power does a Category 1 or 4 crane generally use and what is its source?

Electric or hydraulic power supplied by a diesel engine

Load - ________ parts are those that restrain position or control the movement of the load.

controling

A hook is what type of component?

Load-Bearing Part

Hydraulic foot brakes are what type or group of components?

Load-Controlling Parts

Load - _____________ parts are those that support the load.

bearing

How is electrical current conveyed from the revolving portion of the crane to the lower crane structure?

Through the collector ring system

Safety devices that provide protection for personnel and equipment are considered _____________ safety devices.

general

Safety devices that affect the safe load lifting and handling capabilities of equipment are considered __________________ safety devices.

operational

Which of the following does not affect the safe operation of the crane?

General Safety Devices

A travel alarm is what type or group of components?

A travel alarm is what type or group of components?

General Safety Device

During the walk around check you notice a loose bolt on the crane. You should:

Notify your supervisor of the deficiency.

The crane Pre-use Check consists of:

A walk around visual check
Performing a "No load" operational

It is the operator's responsibility to report a deficiency to the Crane Department.

false

Deficiencies are required to be reported by the end of the shift.

false

If the upper limit switch is working correctly, there is no need to check the lower limit switch.

fasle

Part of the no load operational check is to ensure the proper _________ of all controls.

function

What is the most important reason to do a pre-use check?

To make sure the crane is safe to use.

Documented checks are required for which of the following Category 3 cranes?

gantry
wall
bridge

Place the steps listed in the correct order to check the Upper Limit Switch on a hoist.

Raise hoist two feet below switch & stop
2.Slowly raise hook block into switch
3.Ensure hoist stops with button depressed

There must always be a minimum of _________ full wraps of wire rope on grooved drums.

2

Part of the walk around check is to look for ___________.

deficiencies

The minimum number of wraps of wire rope required on non-grooved drums is __________.

3

What is the purpose of a hoist upper limit switch?

To prevent "two-blocking" or over-travel of the hook block

Emergency stops and brakes should be checked while operating the crane at the fastest speed possible.

F

What is two-blocking and why is it dangerous?

Two-blocking occurs when the hook block makes contact with the drum or sheaves. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load.

Detailed written procedures are required for:

complex lifts.

For all complex lifts, a rigger supervisor, operator supervisor, or a rigging or crane operator working leader shall review on-site conditions and shall ...

conduct a pre-job briefing.

Lifts of test weights during maintenance or load test are ...

excluded from the complex lift requirements.

A crane with a capacity of 100,000 pounds is performing a lift of 40,000 pounds. This is a(n):

non-complex lift.

Which of the following identify the two basic categories of crane lifts?

Complex and Non-Complex

Personnel lifts are ...

always considered complex lifts.

Personnel in a man-lift platform or basket must ...

wear a full body harness with a shock-absorbing lanyard.

For personnel lifts, the total load must not exceed ...

50% of the hoist's rated capacity.

To find the weight of a piece of aluminum plate, you would multiply ...

square feet times material weight per square foot based on a specified thickness.

A triangular shaped 1 inch thick metal plate has a base of 10 feet and a height of 15 feet. What is the area of the plate?

75 square feet

A circular shaped 1/2 inch thick aluminum plate has a diameter of 7 feet. What is the area of the plate rounded up?

39 square feet

A complex shape of 1 inch thick aluminum plate has a rectangular area of 64 square feet and triangular area of 16 square feet. If aluminum weighs 14 pounds per square foot, how much does the plate weigh (rounded up to the nearest hundred pounds)?

1,200 lbs

A complex shape of 1 inch aluminum plate measures 6 feet long on the top edge, 8 feet wide on the left edge, 12 feet long on the bottom edge, ending with a 10 foot long hypotenuse connecting back to the top edge. What is the correct equation to find the area of the triangular shape?

8 x 6 / 2

The formula for determining the area of a triangular shaped object is:

Base x Height divided by 2

A box has 27 cubic feet of sand in it. Sand weighs 105 lbs. per cubic foot. The box weighs 1,200 lbs. empty. The correct equation to find the total weight is:

27 x 105 = 2,835 + 1,200 = 4,035 lbs

A cylinder has a diameter of 12 feet, and a height of 17 feet. What is the volume of the cylinder rounded up?

1,922 cubic feet

A cylinder is made of solid aluminum which has a unit weight of 165 pounds per cubic foot. What is the weight of this cylinder if the diameter is 4 feet and the height is 5 feet?

10,362 lbs

A rectangular shaped tank has a length of 24 feet, a width of 10 feet, and a height of 12 feet. What is the volume of the tank?

2,880 cubic feet

An attachment point is 2 feet from the center of gravity and the other attachment point is 6 feet from the center of gravity. What is the correct percentage of weight distribution to each attachment point with the attachment point 2 feet from the center of gravity being listed first

75%, 25%

Center of Gravity is best described as:

where all the weight is concentrated

The center of gravity is located below the center of balance.

false

The center of gravity (CG) is always located within the object.

false

Attachment point #1 is 6 feet from the center of gravity (CG) and attachment point #2 is 3 feet from the center of gravity (CG). There is a 10,000 lbs load attached. What is the correct equation to find the weight distribution for attachment point #1?

3 divided by 9 multiplied by 10,000 (3 / 9 x 10,000)

The center of gravity (CG) will always find its way directly under the crane hook when lifted off the ground.

false

The reason test and inspection is required is to:

prevent personnel injury.




identify sub-standard equipment.




remove unsafe equipment.

Rigging gear identification markings applied by the activity usually indicate that the equipment is:

in an inspection program

Equipment test and inspection requirements in section 14 of NAVFAC P-307 do not apply to:

oem installed bolt-on pads

Which of the following markings are required on Lashing?

the reinspect due date

rated load

Rigging gear test and inspection records must include:

All of the above

Matching ID marks on rigging gear are required for:

components that can be seperated

Rigging gear test and inspection records are required to be kept on file:

until rplaced by a more current record

Documented records are required for periodic inspections of all rigging equipment.falsefalse

false

What are the two types of rigging gear inspections?

periodic and pre-use

Who is required to perfom an inspection prior to using rigging gear, and what is this inspection called?

the user, preuse inspection

What is the minimum grade of chain required for chain slings?

grad 80

Chain slings used in cargo transfer should be inspected annually.

False

A knot in a synthetic sling is allowed as long as it does not cause permanent damage to the sling.

false

A metal mesh sling can remain in service if only one wire is broken in the mesh.

False

Rigging hardware that is bent can be repaired by straightening it back to original shape.

false

Rigging hardware such as eyebolts, links, rings, and shackles are required to have a periodic inspection every 2 years.

False

Distorted rigging hardware must be:

Removed from service and destroyed

Documentation for alteration or repair of rigging equipment is required to be retained for:

the life of the equipment

Which section of the NAVFAC P-307 is the rigging gear section?

section 14

It is okay to use home-made rigging gear as long as you are lifting light loads.

false

When selecting rigging gear for a job, which of the statements below should be followed?

all the above

What should be used between the rigging gear and the load to prevent damage to the load and rigging?

appropriate sling protection

Two people can operate a chain fall if the pull chain is too hard for one person to pull while hoisting a load.

False

Pulls outside the plane of the eye are allowed on eyebolts as long as the rated load has been decreased.

False

The minimum depth of thread engagement for a 3/4 inch eyebolt into a steel object is:

1 1/8th inch

An angular pull of 45° is allowed on non-shoulder type eyebolts.

false

The rated load of swivel hoist rings must be reduced when they are used for angular pulls.

false

The minimum D/d ratio in the body of a synthetic rope sling is:

1:1

D/d ratio does not affect synthetic web slings.

True

It is acceptable to bend a 1 inch wire rope sling around a 3/4 inch shackle.

False

The minimum D/d ratio allowed for wire rope slings is:

1:1

With the proper D/d ratio a sling in a basket hitch can lift ___ of the rated load of the sling.

200

A 60° sling angle will be formed when you match the sling length to the diagonal distance between attachment points.

true

An object has a length of 5 feet, a width of 3 feet, and a distance of 5 feet 6 inches between attachment points. What length slings would you select to ensure the horizontal sling angle was 60° or greater?

6

to find sling angle stress...

multiply the weight in the attachment point with the angle factor

What markings are required on hoists?

The name of the manufacturer, model number, rated load, and re-inspection due date

What are the two types of inspections performed on hoists and rigging equipment?

pre-use inspection
periodic inspection

When securing a chain hoist ________________ may be used by securing the hand chain around the load chain.

half hitches

Two people may operate a hoist at the same time if the pull chain is too hard for one person to pull.

False

A hoist can be hung from a wire rope sling without a shackle installed if the diameter of the hook is equal to or greater than the diameter of the sling.

true

When lifting a load that is near the rated capacity of the hoist the hoist brake should be checked by:

lifting the load just clear of its supports, stopping movement, then checking to ensure the load is not lowering.

Why should hoists not be used in tie down applications?

because they may be subjected to shock loading

Hoist hooks must have latches or be moused during lifting operations.

true

Prior to use load chains should be inspected for:

damage
proper reeving

Direct voice should only be used when:

the operator and rigger are working in close proximity and ambient noise is low.

In the crane cab, the crane operator must have a clear view of the ...

ASME Hand Signal Chart

How many signalers shall communicate with the crane operator at the same time.

one signaler at a time

A universal language understood by everyone involved with weight handling is:

hand signals

Any additional hand signals must be ...

approved by user

When operating cranes, the operator's primary responsibility is to:

operate safely

Crane operators at naval activities may operate various types, makes, and models of cranes for which they are licensed. How must safety and operator proficiency be assured under these circumstances?

Operators must be familiarized (as directed by a supervisor) before operating.

certification number

Which of the following operator responsibilities is considered the basis for ensuring a safe and reliable crane?

the presue Check or Operators Daily Checklist

What information should be posted, clearly understandable, and readily available to the operator?

Lables for each function

When can an unlicensed crane operator trainee operate a crane?Only under the direct observation of a licensed operator

Only under the direct observation of a licensed operator

When lifting loads with a crane, which of the following is the first thing an operator should do?

Center the hook over the center of gravity of the load.

The second step in the procedure for lifting loads is to:

hoist slowly and remove slack from the rigging gear

The third step for lifting loads is to:

lift the load until completely suspended and stop

While operating, the crane operator becomes concerned over the safety of the lift. The Rigger-In-Charge sees no problem and tells the operator to continue. The operator should:

Refuse to continue until safety is assured.

Side loading a crane boom by dragging loads or lifting a load with a non-vertical hoist may result in:

any of the listed factors above.

In general, which of the following things should an operator do when traveling cranes with loads?

Perform all of the listed actions above

The crane operating envelope includes the crane, the operator, the riggers, the crane walkers, and ...

rigging gear between the hook and

any supporting structures

the load

The rigging operating envelope contains the rigging gear and miscellaneous equipment covered by P-307 section 14, the load itself and...

NOT the crane removal procedure