Crane Course Questions and Answers Graded A+

Crane Course Questions and Answers Graded A+ According to OSHA, when traveling a crane at a jobsite with no load under or near power lines, a spotter is required if any part of the crane will get closer than? 20 feet Within what percentage of level does a telescopic boom crane have to be for the gross ratings in the load chart to remain valid? 1% Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:04 / 0:15 Full screen which one of the following persons are not allowed in the fall zone? A qualified evaluator. According to OSHA, what must all jibs have? Positive stops. Timber blocking placed under the tips of the tracks on a crawler crane will? Make the crane more stable. According to OSHA, if the built in level indicator on your crane is not working properly, what must be done? The level must be tagged out of service and an alternate means must be used. According to OSHA, if the LMI on your crane malfunctions during the work shift, what should you do? Notify the employers designated person in writing of the problem, then verify the weight of the lift to be made, measure the radius, and use the capacity chart to calculate the capacity When picking on rubber, what happens? Boom angle decreases. When considering the suspension system for a personnel platform, according to ASME B30.23 what is not permitted? Nylon or synthetic slings According to OSHA, who is responsible to notify the user of the crane and the crane operator of any underground hazards? The site controlling entity. Who is responsible to do the shift inspection on a crane? A competent person. The load chart capacities are based on either structural integrity or? Stability What hand signal does a signal person want the operator to perform when he has his arm extended thumb pointing up and his index fingers opening and closing? Boom up and lower the load. When is it acceptable for an operator to leave the cab of a crane with a load suspended? Barricades or caution lines, and notices, are erected to prevent all employees from entering the fall zone and where the weight of the working gear is negligible relative to the lifting capacity and is suspended over an area other than an entrance or exit. As you boom down, leverage on a crane will. .. increase. Who ensures the area where the crane will be set up is adequately prepared? The site supervisor Where would the greatest ground pressure be when considering a crawler crane? Boom over the corner What is the reason crane manufacturer's require a reduction in capacity when doing duty cycle work? Because of the more than normal side loading that can be applied when doing duty cycle work What is the definition of radius? Horizontal distance from the center of swing circle to the center of the gravity of the load. According to OSHA and ASME, what is the minimum amount of wraps that must remain on a grooved or smooth hoist or boom hoist drum? 2 What is the percentage of a vertical basket hitch capacity to that of a vertical hitch capacity? 200 % The load line of the crane you are operating comes in contact with an over head power line. There are no signs of danger, such as fire. In this case you should? Stay in the cab and try to break contact with the power lines in a reverse motion that caused the accident How is boom length measured? Boom pivot pin to the center of the boom tip sheave. When lifting a heavy load off the ground, what will the load tend to do? Swing away from the crane. When rigging 2 slings into a shackle; Pin must be placed in the hook What do you call the lower part of the crawler crane below the slewing gear? Track frame "Working radius" is defined as the distance from the: Center of rotation of the crane to the center of gravity of the load. What are the capacities in the load chart based on? The line load being within 1% level. When are you authorized to re-rate a crane? With the manufacturer's or a qualified person permission When doing duty cycle work, unless the manufacturer states otherwise, what reduction in capacity is generally recommended? 20% What would be considered the correct way to place cribbing under an outrigger float? With the cribbing pieces close together. What is the purpose of the holding valve on an outrigger jack cylinder? It locks the hydraulic oil in the cylinder in the event a hose rupture. What is the minimum distance the counter weight needs to be from a wall or any solid structure? Minimum of 2 feet. On wheel mounted cranes, the required distance to stop at 15 mph is 32 ft According to ASME B30.5, when working near power lines up to 350kV and the actual voltage level is not known how far must you stay away from the lines? 20 ft. What type of slings should you use when assembling or disassembling a crane? Synthetic OSHA and ASME regulations require any part of the crane to be how far from a 230kV power line? 20 ft According to OSHA and ASME, when doing the 125% load testing on a personnel hoist platform, what is the required time it must be suspended for during the proof test? 5 minutes When handling a personnel platform, what function is prohibited? Free-falling the hoist drum and using the foot brake to control the load. OSHA regulations state, that it is acceptable for a personnel occupying platform being hoisted with a crane, that the personnel can disconnect their safety belt lanyard? When working over water. A crane is set up with three of the four outriggers fully extended and the fourth partially extended. What would you do? Use the on rubber chart. What happens when you are hoisting a load and you increase the speed of the hoist? Load will increase on the crane. When working near power line and tag lines are used, what must they be made of? They must be made of polypropylene. OSHA states, when assembling or disassembling a crane, who is in charge? The assembly/disassembly (A/D) director. According to ASME B30.10.6, how much twist in a hook requires it to be removed from service? Any apparent bend or twist. What would you do to prevent a load from swinging away from the crane when picking up a heavy load? Raise the boom slightly to compensate for boom deflection before hoisting the load. When stowing a crane with the boom in the air during windy conditions, what would be the proper procedure? With the wind to the back of the boom. Greater tension is exerted on slings attached at: Low angles What would you use for a sling softener? Split pipe Using the preferred method of installing wire rope from a reel onto a hoist drum, the rope runs from the: Top of the reel to the top of the drum. According to ASME, crawler brakes or lock must be able to ... apply in the event of loss of operating pressure or power. Only attachments or counterweights made or approved by the manufacturer should be used because: They could cause a backward stability problem. The swing clearance can increase. The ground pressure may increase. All of the above. What is the minimum area at a worksite that must be barricaded when the site personnel have access? The counterweight swing radius of the crane According to OSHA, if there is a local weather warning, what should you do? The competent person must determine if it would be best to follow the manufacturer's recommendations for securing the crane. What would reduce the tipping axis? Outriggers in mid-extend position. Where must power line warning decals be attached to the crane? In view from the operators station and at least two on the outside of the crane. Polyester and polypropylene web slings shall not be used where fumes, vapors, sprays, or liquids of what are present? Caustics. What functions does an LMI or anti-two block stop when a telescoping crane is overloaded or is approaching a two-block condition? Hoist, boom down and telescope out. Hoist, boom down and telescope out. When the lift is more than 75% of the rated capacity. The safety design factor for a personnel platform structure and the rigging must be how many times it intended capacity? 5