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General crane safety
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 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 Extending a telescoping boom without lowering the hoist may result in "two-blocking" the crane. A) True B) False - 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 - 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 - 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 - B) 4 full wraps, 2 full wraps The horizontal distance from the center of rotation of the crane to the center of the hoist line(s) with load applied is called A) Boom Length B) Radius C) Lift Zone D) Quadrant E) Circumference - B) Radius What is two-blocking, and why is two-blocking dangerous? A) Two-blocking occurs when the hook contacts another block or hook on the crane. It is dangerous because the hook could damage the crane, causing loss of load control. B) Two-blocking occurs when the block or hook contacts the ground. It is dangerous because the wire rope may come off of the drum and drop the block.
C) 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. - C) 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. 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 - 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 - B) 720 pounds 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 E) The crane operator's license expiration date 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 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 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. - 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 B) Damage of any kind C) Size and grade of wire rope
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 - 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- 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 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 E) General safety devices - D) Load controlling parts 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 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 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 - 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 - 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. - 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 - 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 C) 15,888 pounds D) 14,978 pounds E) 18,338 pounds - E) 18338? not B) 16,888 pounds The crane operator can check the accuracy of the load moment indicator (LMI) against known weights and radii. A) True B) False - A) True 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% 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 C) Stop operation until the meaning of the signal is understood D) Guess at what the signal means until the Rigger signals to stop operations - C) Stop operation until the meaning of the signal is understood
A) 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. B) Not if the operator knows how far to hoist or lower the load. C) Yes, at all times during a lift. - C) Yes, at all times during a lift. A floating crane with a capacity of 200,000 pounds is a ________crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - A) Category 1 What is the minimum required clearance when operating a crane in the vicinity of overhead electrical transmission lines with a voltage of 50,000 volts or less? A) 5 feet B) 10 feet C) 20 feet D) 30 feet E) 40 feet - 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 - 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 - 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 - 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 - 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 - 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 - 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 D) Category 4 - B) Category 2 Crane operators are responsible for all of the following EXCEPT- A) Doing a thorough pre-use check B) Maintaining constant communication with the signalman C) Lifting and landing all loads safely D) Slowing down when signals are unclear - D) Slowing down when signals are unclear How is electrical current conveyed from the revolving portion of the crane to the lower crane structure? A) through the electrical panels B) through transistors C) through the main circuit board D) through the collector ring system - D) through the collector ring system Why should the hook be positioned directly over the load when attaching the load? A) to avoid side loading of the boom and dragging the load as it is picked up B) to make it harder to attach the rigging gear to the load C) so the Riggers can drag the load into place D) so the crane operator can place a side pull on the crane - A) to avoid side loading of the boom and dragging the load as it is picked up 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 - 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 - 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
D) Total Capacity E) None of the above - A) Gross Capacities What is the crane communications hand signal pictured with the arm vertical, the forefinger pointing up, and the hand moving in a small horizontal circle? A) Boom up B) Travel C) Move slowly D) Hoist E) Lower - D) Hoist 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? A) Perform annual inspection and test B) Properly inflate tires C) Perform required maintenance D) Set up on firm and level surfaces E) Perform Daily Pre-use Checks - E) Perform Daily Pre-use Checks What is the crane communications hand signal pictured with the arm extended downward, the forefinger pointing down, and the hand moving in a small horizontal circle? A) Lower B) Move slowly C) Hoist D) Travel E) Boom up - A) Lower If an object is 6 feet long, 5 feet wide, and 4 feet high, what is the volume of the object? A) 30 square feet B) 30 cubic feet C) 60 cubic feet D) 120 square feet E) 120 cubic feet - E) 120 cubic feet Most synthetic web slings should NOT be used in areas where temperatures exceed 194 degrees Fahrenheit. A) True B) False - A) True To determine how much weight can be lifted with a crane, you must deduct the weight of from the gross capacity shown on the load chart. A) attachments, hooks, and blocks B) all rigging gear C) only the attachments D) the counterweights - B) all rigging gear When is it permissible for an operator to leave the controls of a crane while a load is suspended from the hook? A) When the operator is working more than one job B) When a Rigger stands by the load and prevents personnel from entering the area C) The operator shall remain at the controls at all times while a load is suspended from the hook. D) When the supervisor approves it - C) The operator shall remain at the controls at all times while a load is suspended from the hook. Shackles, wire rope slings, and/or eyebolts may be used to their full capacity when used within
of vertical. A) 5 degrees B) 10 degrees C) 15 degrees D) 20 degrees E) 30 degrees - D) 20 degrees Why should extreme caution be used when lifting loads from the water? A) Because the load weight may decrease on the crane due to loss of buoyancy and suction. B) Because you may fall in the water. C) Because the load on the crane may increase as the object leaves the water due to loss of buoyancy, water held inside the object, and/or surface tension (suction). - C) Because the load on the crane may increase as the object leaves the water due to loss of buoyancy, water held inside the object, and/or surface tension (suction). Which of the following is used with a physical locking device placed at the energy source? A) Lockout Tag B) Yellow Caution Tag C) Red Danger Tag D) Out of Service Tag - A) Lockout Tag Bridge crane with rated capacities of 20,000 pounds or greater are classified as_______cranes. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - B) Category 2 Knowing the load's approximate center of gravity prior to rigging or lifting a load is important- A) so the load does not shift, tip, or swing out of radius B) to help calculate stress in each sling C) to help choose the correct rigging gear D) for all reasons listed above - D) for all reasons listed above Who is responsible for making certain that a load is properly secured and balanced before a lift is made? A) The rigging supervisor, but the Rigger will check for any defects prior to the lift B) The crane operator, but the Rigger-In-Charge shall verify the load is properly secured prior to lifting C) The Rigger, but the Operator shall not lift a load if he or she detects any defects in the attachment D) The crane walker, but the Rigger-In-Charge shall verify the load is properly secured - B) The crane operator, but the Rigger-In-Charge shall verify the load is properly secured prior to lifting Regardless of the method of communication used, all crane signals must A) hand signals B) visible C) given by radio D) understood - D) understood How should an operator check the hoist brakes when lifting a load? A) Lift the load several feet off the ground and stop hoisting to check for slippage of the hoist brake B) Lift the load into the upper limit suitch and check for lowering of the load, C) Lift the load a few inches off the ground and stop hoisting to ensure there is no slippage of the brakes. - A) Lift the load several feet off the ground and stop hoisting to check for slippage of the hoist brake
Components that support the load and upon failure would cause dropping or uncontrolled lowering of the load are A) alterations and/or modifications B) general safety devices C) load controlling parts D) operational safety devices E) load bearing parts - E) load bearing parts The crane operator is responsible for the pre-use______of the crane. A) safety B) condition C) check - C) check 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 ensure operator proficiency and safety? A) Operate the crane in an open area until familiar with the specific characteristics of the crane B) Pass additional written and performance tests C) Operate at reduced speeds until confident and capable D) Be familiarized by a qualified person before operating the crane for the first time E) No additional tests are needed - D) Be familiarized by a qualified person before operating the crane for the first time Select three factors that shall be considered when selecting a crane for a particular job A) Background noise levels B) The height of the lift C) The crane operator's qualifications D) The weight of the load E) The Rigger's experience F) The radius of the lift - incorrect D) The weight of the load E) The Rigger's experience F) The radius of the lift Failure to lower the tilt-blocks or bed wedges when traveling locomotive cranes around curves will most likely result in- A) Loss of capacity B) Overloading the crane C) Overheating brakes D) Loss of stability E) Derailment - incorrect D) Loss of stability When traveling a hydraulic truck crane over the highway between job sites, always secure the________to the carrier frame with a weak link to prevent damage. A) cribbing B) hooks C) outrigger pads D) rigging gear E) jib or extension - incorrect E) jib or extension When ground conditions for setting up a mobile crane are less than ideal, operators must_______ A) reduce capacity B) use blocking or cribbing C) use sandbags on the outriggers
D) perform a trial lift without load E) use extreme caution and slow speeds - B) use blocking or cribbing What is the crane communications hand signal pictured with the arm extended, fist closed, and the thumb pointing up? A) Hoist B) Use main hook C) Boom up and lower hoist D) Raise boom E) Use whip hoist - D) Raise boom Portal crane operators shall stop crane travel if materials or vehicles are inside crane clearance lines. A) True B) False - A) True Who is primarily responsible for evaluating a crane operator's physical and emotional fitness? A) The Crane Operator B) The Dispatcher C) The Crane Supervisor D) The activity Medical Officer E) All listed are responsible - incorrect D) The activity Medical Officer What is the purpose of a hoist limit switch? A) to cause the operator to slow down B) to prevent rotation of the hook C) to cut off power to the crane when contacted D) to prevent over-travel of the hook block and the possibility of two-blocking - D) to prevent over- travel of the hook block and the possibility of two-blocking What is the bridge crane communication hand signal pictured with the arm extended forward and the hand opened, slightly raised, making a pushing motion? A) Hoist B) Bridge travel C) Dog everything D) Move slowly E) Lower - B) Bridge travel Common modes of operation for typical OET bridge cranes are A) skew, hoist, and bridge B) hoist, trolley, and bridge C) travel, rotate, and hoist D) hoist, luffing, and trolley E) bridge, rotate, and extend - B) hoist, trolley, and bridge Out of the cranes listed below, select the four Category 1 crane types. A) Floating Crane B) Mobile Crane C) Gantry Crane D) Pillar Jib Crane E) Overhead Electric Traveling Crane F) Tower Crane G) Jib Crane H) Portal Crane - A) B) F) H)
What should be done when leaving a crane at the end of the work shift? A) Secure power B)Set brakes, rotate locking devices and drum pawls C)Raise blocks into the upper limit switch D) Ensure all controls are in the neutral or "off"position E) Ensure the power is on F) Place the boom as close as possible to the vertical position - incorrect A) B) D) F) Select the proper method of landing a load. A) Lower the load until it is a few inches off the ground and stop B) Lower the load slowly, stop a few inches from the landing point, then slowly lower the rest of the way C) Lower the load at full speed until the load contacts the ground or landing surface D) Lower the load slowly until it contacts the ground or landing surface - incorrect D) Lower the load slowly until it contacts the ground or landing surface Which of the following identifies the two categories of crane lifts? A) Critical and Common B) Unusual and Routine C) Complex and Non-Complex D) Complex and Critical E) Critical and Routine - E) Critical and Routine Two-crane lifts require two signalmen to safely control the load. A) True B) False - A) True What are the 5 principal parts of Category 1 and Category 4 cranes? A) Boom perator's cab, carier frame, bridge girders, and B) Operator's cab, bridge girders, wheels, motors, and trolley C) Operator's cab, boom, wheels, motors, and drums D) Boom, machinery house, rotate bearing, supporting structure, and travel system - D) Boom, machinery house, rotate bearing, supporting structure, and travel system If an object has a volume of 200 cubic feet and the unit weight is 150 pounds per cubic foot, what is its weight? A) 350 pounds B) 450 pounds C) 30,000 pounds D) 300,000 pounds - D) 300,000 pounds Bridge cranes with rated capacities of less than 20,000 pounds are classified as cranes. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - C) Category 3 An OET Bridge crane with a capacity of 80,000 pounds is a crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4 - C) Category 3
Select the best answer. All of the following are principal parts of an overhead traveling crane EXCEPT- - shackles and eye bolts Which of the following identify the two categories of crane lifts? Complex and Non-Complex Unusual and Routine Critical and Common Critical and Routine Complex and Critical - Complex and Non-Complex
