Crane Quiz Questions and Complete Solutions Graded A+

Crane Quiz Questions and Complete Solutions Graded A+ What are the two main standards that cover mobile cranes? - Answer: OSHA AND ASME OSHA CFR standard for cranes is? - Answer: 19.26.1400 ASME standard is? - Answer: B30.5 The first concern of the operator should always be? - Answer: Saftey Whenever the operator has doubt they should what and report it to who? - Answer: Stop and lift director Mobile crane operator certification program offered by NCCER has been accredited by? - Answer: ANSI OSHA requirements, a crane operator's certification is valid for how long? - Answer: 5 years Certified operators must take only the written assignment again? T or F - Answer: False both written and practical What are the 3 basic types of crane - Answer: Mobile, tower, overhead The distinct feature of mobile cranes is that they are? - Answer: Equipped with means of propulsion and travel Crawler Cranes are named for their slow moving tracks called crawler frames or? - Answer: Tread members Cranes with rotating controls ______ Crane with stationary controls _____ - Answer: Swing Cab and Fixed Cab It is not necessary for outriggers to remove all weight from the tires? T or F - Answer: False How should telescopic boom sections be extended? - Answer: Per Manufactures Recommendations What is the lower section of boom that doesn't extend? - Answer: Base section Most load chart ratings require the crane to be? - Answer: properly leveled within 1% Cranes working circle based on booms position in relation to carrier body? - Answer: Quadrant of operation Most carrier mounted cranes have their greatest capacity where? - Answer: over the rear When making a lift the center of gravity of the load should be? - Answer: directly under the boom tip Side loading is a major cause of what? - Answer: Boom Collapse Crane operators should follow _____ guidance related to wind - Answer: Crane Manufactures When traveling with load boom should be? And the load should be where? - Answer: Short as possible and low to ground Loading on the crane will ____ as the load comes out of the water - Answer: increase Water temp is one thing to consider in a submerged lift? T or F - Answer: False As offset angle ____ capacity and strength of the jib _____ - Answer: increases, decreases Multi Crane lifts require ____ signal person (s) and require rating deduction of ___? - Answer: 1 person & 25% High speed continuous operation is called? And requires rating deductions of what %? - Answer: Duty cycle and 20 The inspection covers same as frequency but must be documented is? - Answer: Monthly inspection The inspection is conducted in a service environment? 2 of them - Answer: Annual or periodic Equipment idle 1-6 months requires equivalent of frequent inspection, after 6 months requires more intense _____ inspection - Answer: periodic If any safety devices fall to operate properly, lift operation must be ______? - Answer: Brought to a safe halt Category 1 operational aids must be repaired within ____ days Category 2 must be fixed within ____ - Answer: 7 and 30 days What does LMI stand for - Answer: Load moment indicator An accessible _____ fire extinguisher is required on equipment - Answer: 10 BC Two load blocking can be caused by? - Answer: Hoisting, extending and booming down when the block or ball is too close to the boom head If two-blocking alarms sounds during operation: - Answer: Immediately stop & Lower the load If not properly supported one of these bearing surfaces can sink allowing the crane to lift away from level, if this occurs operator should? - Answer: Raise the boom and lower the load to Rec enter the cranes weight Ground pressure is greatest on crawlers when the boom is? And the least when over the? - Answer: Over the corner and side blocking should be at least ___ the surface area of the outrigger pad - Answer: 3 times Lifting personal is allowed at anytime? T or F - Answer: False To lift personnel the crane must be level within ___ and not exceed ___ of rating - Answer: within 1%/ 50% What devices are required to lift personnel? - Answer: Boom angle indicator, boom Hoisting and limiting device and 2 block device When must trial lift be made? - Answer: Each location, each shift and when route is changed The platform and rigging must be proof tested at ____ for at least how long - Answer: 125% and 5 minutes Proof tests can not be done with trial lifts? T or F - Answer: False they can be done at the same time Lifting personnel is not allowed "on rubber"? T or F - Answer: True Who can give operator stop or emergency stop signal? - Answer: anyone If communication is disrupted? - Answer: Crane movements must be stopped until communications are restored Operators version of communication device must be what? - Answer: handsfree Overhead power lines must always be considered energized until - Answer: Electrical utility authorities indicate otherwise OSHA requires clearance of ___ feet when voltage is up to 50 Kv - Answer: 10 OSHA requires clearance of ___ feet when the unknown up to 350kv and __ feet when unknown is over 350 Kv - Answer: 20 and 50 Exit crane with normal 3 point contact when contact with power line is made? T or F - Answer: False jump off, bunny hop or shuffle feet together 6inches at a time Once the activity is stopped for any reason, only who can restart it? - Answer: Lift director Gears, pulley shafts, and other moving parts ( rotating machinery) should have _____ kept in place under any normal operating conditions - Answer: Guards Blocking should always be placed under outrigger pads never under wear? - Answer: The beams What are the quadrants of operator - Answer: Over the front, over the rear, over the sides, 360 Use verbal and non verbal communication to direct crane operator - Answer: Signal person Accurate measure of level place a level 90 degrees apart on the? - Answer: Upper works A level site and condition of soil must be good in order for this to apply - Answer: Load chart ratings When a upper structure is rotated over the side the capacity will be _____ because the distance of the cranes center of gravity to the tipping axis is shortened - Answer: Lower Hydraulic boom section be extended - Answer: By manufacturing specs Most cases winds at __ will stop crane operations per manufacturer specs - Answer: 30 mph This is one of the most overlooked stability factors and will increase load radius, decrease capacity, and make the crane hard to operate - Answer: Wind Lifting out of level rapid swing, improper tip up action and high winds can all cause? - Answer: Side loading Side loading can cause what to the boom - Answer: Break or severely damage This is the only allowable side loading? - Answer: Freely suspended loads Another name for loading is? - Answer: Dynamic loading When lifting load out of the water the load will do this? - Answer: Increase Lifting to fast will ______ effective load of weight - Answer: Increase When pick and carry operations it is important to do these 3 things? - Answer: Use the shortest boom possible, keep load close to the ground, load should be carried in line with direction of travel Most carrier mounted cranes have their greatest capacity where? - Answer: over the rear A sudden snatching of a load, a frozen load, or rapid hoisting of the cable can all cause this - Answer: Shock loading Definition of jib - Answer: Extension of the boom As jib angle increase the capacity of the jib? - Answer: Decreases Keeps a manual extension from retracting - Answer: Locking pin It takes 2 signal operators when making a multi crane lift? T or F - Answer: False only 1 Multi lifting requires each crane to be reduced _____ of its net capacity - Answer: 25% This is a device that sense the line pull and estimates the weight - Answer: Load cell Cranes with a telescopic boom must have this - Answer: Boom length indicator When lifting ground pressure ______ most at the bearing surface near the load - Answer: Increases If your leading surfaces begin to sink what should the operator do? - Answer: Raise the boom and lower the load If a outrigger jack is leaking what should be done? - Answer: Shut down crane contain spill and notify mechanic When can you lift a person - Answer: When an area is more hazardous than using the crane In event a crane losses power these 3 things should be done - Answer: Set all brakes and locking devices, move all clutches or power controls to neutral and land any load on the hook If the boom contacts a energized conductor the operator should - Answer: Stay in the cab and try to reverse the action that caused the contact A signal person must be used when the boom is within? - Answer: A booms length Leading cause of fatalities is electrocution resulting from this - Answer: Power line contact with the boom