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General crane safety/ 120+ Quizzes & Ans/
Extending a telescoping boom without lowering the hoist may result in "two- blocking" the crane. A) True B) False - Answer: A) True 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 - Answer: C) Non-cab operated category 3 bridge crane 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 - Answer: B) Oxygen/Acetylene bottles in racks designed for lifting 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 E) 1 full wrap, 2 full wraps - Answer: B) 4 full wraps, 2 full wraps 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 - Answer: D) The certification expiration date of the crane E) The crane operator's license expiration date
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. When should a tagline be used during lifting operations? A) when lifting a load over or near electrical transmission lines 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 - Answer: B) to prevent the load from swinging or rotating 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 - Answer: B) 720 pounds 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 - Answer: C) The Crane Operator, Crane Supervisor, and Crane Rigger
When operating floating cranes, you must start swinging or rotating quickly and stop smoothly to prevent excessive barge list. A) True B) False - Answer: B) False 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 - Answer: B) An extension attached to the main boom used when lifting light loads to a higher elevation than that permitted by the main boom If you find cracking or flaking paint on a welded joint of a structural component on the boom, you should A) Look closer to see if it is a crack. B) Report it immediately to your supervisor. C) Do nothing as it is not significant. D) Make a mental note to investigate it later. E) Note it on the ODCL, but do not report it. - Answer: B) Report it immediately to your supervisor. While performing a pre-use check, the operator must check the wire rope system for all of the following EXCEPT- A) Excessive corrosion
C) Load Controlling Parts D) Load Bearing Parts E) General Safety Devices - Answer: E) General Safety Devices When setting up mobile cranes, the minimum clearance between the rotating upper works and fixed objects should be? A) 1 foot B) 2 feet C) 3 feet D) 4 feet E) 5 feet - Answer: incorrect D) 4 feet The rated load of the hook block installed on a crane may limit the crane's lifting capacity. A) True B) False - Answer: A) True 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 - Answer: A) Continue operating until the supervisor performs an evaluation When should the rotate locking device be engaged on a mobile crane? A) when hoisting a load B) while the crane is traveling with a load in "pick and carry" mode C) any other time required by the crane OEM D) when landing a load E) whenever using the LMI system F) whenever the operator leaves the cab - Answer: incorrect B) while the crane is traveling with a load in "pick and carry" mode C) any other time required by the crane OEM D) when landing a load F) whenever the operator leaves the cab In cold weather operation, what precautions should be taken during the pre- operational check or ODCL to avoid damage when sheaves may be frozen? A) Check the hoist and boom lower limit switches first B) Hoist down first and check the lower limit switch C) Raise the blocks and boom before lowering them D) Lower the boom prior to raising it E) Lower the blocks prior to raising them - Answer: C) Raise the blocks and boom before lowering them If the crane operator and the Rigger-in-Charge disagree on whether or not a load is safe to lift, the operator should-
D) Certification expiration date, crane ID, and certified capacity E) Crane manufacturer, crane ID, and certified capacity - Answer: D) Certification expiration date, crane ID, and certified capacity 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 deficiencies are corrected B) Shut the crane down and return to your supervisor for additional work C) Call your supervisor and let him or her know what the deficiencies are D) Note the deficiencies on the ODCL - Answer: D) Note the deficiencies on the ODCL not A) Stop, secure the crane, and notify your supervisor. Do not operate the crane until the deficiencies are corrected Why is it important to have bent or dented crane boom members inspected and evaluated? up A) Because bends and dents may cause the wire rope to get hung B) Because bends and dents can reduce the strength of a boom resulting in sudden collapse C) Because bends and dents may cause the crane to lose stability and tip over D) Because bends and dents can cause the capacity of the crane to be reduced during the next load test - Answer: B) Because bends and dents can reduce the strength of a boom resulting in sudden collapse What are the actions required if an asterisked item on the ODCL is found unsatisfactory during the pre-use check of the crane?
A) Stop operations and notify your supervisor. Keep operating the crane until engineering or maintenance arrives. B) Stop operations, notify your supervisor of the condition, and annotate the deficiency on the ODCL. C) Stop operation and notify engineering of the deficiency. D) Note the deficiency on the ODCL and keep operating the crane until engineering arrives to perform an evaluation. - Answer: B) Stop operations, notify your supervisor of the condition, and annotate the deficiency on the ODCL. 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 - Answer: A) Category 1 Crane Configuration: The Grove RT740 is equipped with a stowed tele-offsettable 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
Which of the following can affect the crane's capacity? A) Out of level B) Outrigger position C) Side loading D) Load swing E) Any of the listed factors above - Answer: E) Any of the listed factors above If an object is 6 feet long, 4 feet wide, and 2 inches thick, what is the area of the object? A) 4 square feet B) 4 cubic feet C) 24 square feet D) 24 cubic feet E) 48 square feet - Answer: C) 24 square feet New shackles put into the weight handling equipment program are required to have all of the following markings EXCEPT- A) Date of manufacture B) Rated load C) Manufacturer name, logo, or trademark - Answer: C) Manufacturer name, logo, or trademark 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 - Answer: E) Visible to the operator 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 - Answer: B) to prevent outward swing of the load due to centrifugal force A commercial truck mounted crane with a capacity of 14,000 pounds is a______crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - Answer: D) Category 4 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 - Answer: D) the distance from the boom "heel" or "foot" pins to the center of the boom tip sheave
C) 20 feet D) 30 feet E) 40 feet - Answer: B) 10 feet 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 - Answer: E) Engage all hoist pawls 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 - Answer: A) True 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 - Answer: B) Trolley travel When can an unlicensed crane operator trainee operate a crane?
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 - Answer: D) Only under the direct observation of a licensed operator 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 - Answer: D) Increase the stress on each leg Side loading a crane boom by dragging loads or lifting a load with a non-vertical 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 C) Uncontrolled movement of the load and injury to personnel D) Any of the listed factors above - Answer: D) Any of the listed factors above A pillar-jib crane with a capacity of 22,000 pounds is a crane. A) Category 1 B) Category 2 C) Category 3
Crane Configuration: The Grove RT740 is equipped with a stowed tele-offsettable boom extension. The whip line with a 7 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 gross capacity for the main hook reeved with 6 parts of line using a 75- foot boom length and lifting at a maximum radius of 32 feet. A) 17,400 pounds B) 17,985 pounds C) 20,400 pounds D) 21,050 pounds E) 23,800 pounds - Answer: incorrect C) 20,400 pounds When pre-planning a lift with a mobile crane, which of the following is the LEAST important information the crane operator must know? A) the total weight of the lift, including the rigging/lifting gear B) the maximum height that the load will be raised C) the latest maintenance service date for the crane D) the maximum radius at which the crane will be working E) the path that the load will be lifted from, carried through, and placed in - Answer: C) the latest maintenance service date for the crane Commercial truck-mounted cranes having telescoping or articulating booms and a capacity of less than 2,000 pounds are classified as cranes. A) Category 1
B) Category 2 C) Category 3 D) Category 4 - Answer: A) Category 1 An OET Bridge crane with a rated capacity of 16,000 pounds is a__________crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - Answer: B) Category 2 What is the crane communications hand signal pictured with the arm extended to the side, the fist closed, and the index finge pointing outward? A) Use whip hoist B) Stop C) Lower Boom D) Travel E) Swing or Rotate - Answer: E) Swing or Rotate What signal may an operator obey from a person other than the designated signal giver? A) Hoist B) Stop C) Dog Everything D) Swing - Answer: B) Stop
