Download General crane safety-122 Questions and Answers-100% Accurate. and more Exams Workplace Safety in PDF only on Docsity!
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General crane safety-122 Questions and Answers-
100% Accurate.
1. The minimum crane team for a mobile crane on outriggers would consist of-
A) The Crane Operator, Rigger Supervisor, and Crane Rigger
B) The Crane Operator, Crane Supervisor, Rigger Supervisor, and Crane Rigger
C) The Crane Operator, Crane Supervisor, and Crane Rigger
D) The Crane Operator and Rigger-in-Charge
E)The Crane Operator, Crane Walker, and Crane Rigger: C) The Crane Operator, Crane Supervisor, and Crane
Rigger
2. When operating floating cranes, you must start swinging or rotating quickly and stop
smoothly to prevent excessive barge list.
A) True
B) False: B) False
3. Extending a telescoping boom without lowering the hoist may result in "two-blocking"
the crane.
A) True
B) False: A) True
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4. All of the following require a license to operate EXCEPT a(n)-
A) Cab-operated category 3 bridge crane
B) Mobile hydraulic truck crane
C) Non-cab operated category 3 bridge crane
D) Articulating boom category 4 crane
E)Floor-operated category 2 bridge crane: C) Non-cab operated category 3 bridge crane
5. Which of the following lift types would NOT be considered a complex lift?
A) Multiple-crane lifts
B) Oxygen/Acetylene bottles in racks designed for lifting O C) Large
geometric shapes
D) Loads with multi-level attachment points
E)Hazardous or explosive materials: B) Oxygen/Acetylene bottles in racks designed for lifting
6. What is the minimum amount of rope that shall be on a grooved drum and a smooth drum?
A) There is no minimum
B) 4 full wraps, 2 full wraps
C) 2 full wraps, 3 full wraps
D) 6 full wraps, 4 full wraps
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B) to prevent the load from swinging or rotating
C) when the supervisor approves their use
D) only when lifting the load to extreme heights: B) to prevent the load from swinging or rotating
10. 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?
A) 348 pounds
B) 720 pounds
C) 6,720 pounds
D) 60 pounds
E) 120 pounds: B) 720 pounds
11. The two expiration dates that are of particular importance to crane operators are-
A) Vehicle registration expiration date
B) Hydraulic oil expiration date
C) CAC card expiration date
D) The certification expiration date of the crane
E)The crane operator's license expiration date: D) The certification expiration date of the crane
5 / 47 E) The crane operator's license expiration date
12. Which of the following is NOT an acceptable method of communication between
the signal person and the crane operator?
A) Signal Flags
B) Direct Voice
C) Hand Signals
D) Sound-powered Phones
E)Approved Radios: A) Signal Flags
13. What is a jib boom?
A) A boom that is attached to the main boom to allow rotation of the load
B) An extension attached to the main boom used when lifting light loads to a higher
elevation than that permitted by the main boom
C) A boom that is used to lift extremely heavy loads: B) An extension attached to the main boom used when lifting
light loads to a higher elevation than that permitted by the main boom
14. If you find cracking or flaking paint on a welded joint of a structural compo- nent on
the boom, you should
A) Look closer to see if it is a crack.
B) Report it immediately to your supervisor.
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17. If you find a deficiency that will affect the safe operation of the crane during the pre-
operational check, all of the following actions must be taken EXCEPT-
A) Operate that specific function again to ensure there is a problem
B) Notify your supervisor
C) Note the finding on the ODCL
D) Secure the crane
E)Follow supervisor's instructions: A) Operate that specific function again to ensure there is a problem
18. Components that provide protection for operation and maintenance person- nel working
on or in the path of cranes are?
A) Operational Safety Devices
B) Alterations/Modifications
C) Load Controlling Parts
D) Load Bearing Parts
E)General Safety Devices: E) General Safety Devices
19. When setting up mobile cranes, the minimum clearance between the rotat- ing upper
works and fixed objects should be?
A) 1 foot
B) 2 feet
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C) 3 feet
D) 4 feet
E) 5 feet: incorrect
D) 4 feet
20. The rated load of the hook block installed on a crane may limit the crane's lifting
capacity.
A) True
B) False: A) True
21. When crane accidents happen or damage is found, you must do all of the following
EXCEPT
A) Continue operating until the supervisor performs an evaluation
B) Put the load in a safe condition
C) Standby for instructions
D) Stop operations
E)Contact your supervisor: A) Continue operating until the supervisor performs an evaluation
22. When should the rotate locking device be engaged on a mobile crane?
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D) Lower the boom prior to raising it
E)Lower the blocks prior to raising them: C) Raise the blocks and boom before lowering them
24. If the crane operator and the Rigger-in-Charge disagree on whether or not a load is
safe to lift, the operator should-
A) Follow the instructions of the Rigger-in-Charge
B) Note the incident on the back of the ODCL card
C) Not operate the crane until contacting the supervisor to resolve the issue
D) Proceed slowly with extreme caution
E)Tell his or her supervisor at the end of the shift: C) Not operate the crane until contacting the supervisor to resolve
the issue
25. Components that control, restrain, or position the load and upon failure W would
cause dropping, shifting, or uncontrolled movement of the load are
A) Alterations and/or modifications
B) Operational safety devices
C) Load bearing parts
D) Load controlling parts
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E)General safety devices: D) Load controlling parts
26. The Rigger-in-Charge has primary responsibility for determining the weight of an
object to be hoisted; however, the operator must be satisfied that the estimated weight to be lifted will not exceed the safe load carrying capacity of the crane.
A) True
B) False: A) True
27. The crane operator must check the certification information on the crane for before
operating the crane.
A) Operator's name, license number, and expiration date
B) Certified capacity, gross vehicle weight, and expiration date
C) Crane ID number, OEM capacity, and test date
D) Certification expiration date, crane ID, and certified capacity
E)Crane manufacturer, crane ID, and certified capacity: D) Certification expiration date, crane ID, and certified
capacity
28. During performance of your pre-operational check of the crane, you find minor
deficiencies. What do you do?
A) Stop, secure the crane, and notify your supervisor. Do not operate the crane until the
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C) Stop operation and notify engineering of the deficiency.
D) Note the deficiency on the ODCL and keep operating the crane until en- gineering arrives to
perform an evaluation.: B) Stop operations, notify your supervisor of the condition, and annotate the deficiency on the ODCL.
31. A portal crane with a capacity of 120,000 pounds is a crane.
A) Category 1
B) Category 2
C) Category 3
D) Category 4: A) Category 1
32. Crane Configuration: The Grove RT740 is equipped with a stowed tele-off- settable boom
extension. The whip line with a 7 and 1/2 ton headache ball is reeved over the auxiliary boom nose. The main block is a 45-ton 3-sheave w/cheekplates. Use the Grove RT-740 Rough Terrain Load Chart to answer this question: Find the net capacity for the main hook reeved with 6 parts of line using a 75-foot boom length at a maximum radius of 32 feet.
A) 18,988 pounds
B) 16,888 pounds
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C) 15,888 pounds
D) 14,978 pounds
E)18,338 pounds: E) 18338?
not B) 16,888 pounds
33. The crane operator can check the accuracy of the load moment indicator (LMI) against
known weights and radii.
A) True
B) False: A) True
34. When making personnel lifts, the capacity of a mobile crane for a given radius is
reduced by-
A) 25%
B) 50%
C) 75%
D) 80%
E)100%: B) 50%
35. What should an operator do if he or she is not sure of the meaning of a signal?
A) Place the load in a safe area
B) Keep operating as long as he or she can see the load
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A) Date of manufacture
B) Rated load
C) Manufacturer name, logo, or trademark: C) Manufacturer name, logo, or trademark
39. Manufacturer's load rating charts for cranes must be-
A) Posted outside the cab
B) Visible to the Crane Rigger
C) Available from the engineering department
D) Avallable from the supervisor
E)Visible to the operator: E) Visible to the operator
40. Why should crane swing be relatively slow?
A) so that the crane can be operated for longer periods
B) to prevent outward swing of the load due to centrifugal force
C) to keep the operator from having to correct misalignment
D) to prevent the load from falling out of the rigging gear: B) to prevent outward swing of the load due to
centrifugal force
41. A commercial truck mounted crane with a capacity of 14,000 pounds is a
17 / 47 crane.
A) Category 1
B) Category 2
C) Category 3
D) Category 4: D) Category 4
42. What is the definition of "boom length"?
A) the distance from the boom "heel" or "foot" pins to the jib attachment pins
B) the distance from the rotate base to the center of the boom tip sheave
C) the distance from the center of rotation on the crane to the center of the boom tip sheave
D) the distance from the boom "heel" or "foot" pins to the center of the boom tip sheave: D) the
distance from the boom "heel" or "foot" pins to the center of the boom tip sheave
43. On cranes, lowering the boom with the hook blocks raised will most likely result in
A) tipping
B) two-blocking
C) overloading
D) insufficient hook height
E)none of the above: B) two-blocking
44. Is it necessary for the operator to see the load or work area?
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47. Which of the following steps DOES NOT apply to securing lattice boom cranes?
A) Place the boom at approximately 45 degrees
B) Disengage the master clutch
C) Lock down all foot brakes
D) Retract the boom fully
E)Engage all hoist pawls: E) Engage all hoist pawls
48. The maximum capacity for a crane can be limited by the number of parts of wire rope
reeved between the hook block and hoisting sheaves.
A) True
B) False: A) True
49. 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?
A) Bridge travel
B) Trolley travel
C) Hoist
D) Move slowly
E)Swing: B) Trolley travel
50. When can an unlicensed crane operator trainee operate a crane?
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A) When their supervisor tells them to operate a crane
B) When he or she needs to operate a crane to get the job done
C) In an emergency
D) Only under the direct observation of a licensed operator: D) Only under the direct observation of a licensed
operator
51. Sling angles affect the actual stress on each leg of the sling. Lowering the angle
measured from the horizontal will-
A) Not change the actual stress on each leg
B) Double the stress on each leg
C) Cause the sling to be overloaded
D) Increase the stress on each leg
E)Decrease the stress on each leg: D) Increase the stress on each leg
52. Side loading a crane boom by dragging loads or lifting a load with a non-ver- tical hoist
may result in
A) Destructive stresses placed on the boom and sheaves
B) Possible overload due to swinging of the load after lift-off
