Download MA 1A Hoisting License Exam Prep: Comprehensive Guide with Answers and more Exams Biology in PDF only on Docsity!
MA 1A Hoisting License Exam
Prep latest updated verdion
with 100% correct answers
(100% accuracy)
A crane must always have at least ____ of a tank of fuel or it is considered a deficiency by OSHA - answer 50% Most common type of cause of accident - answer Hit by falling object - 43% Metal fatigue - answer A crane overloaded will lift successfully right up until the day it fails with only a fraction of its true capacity An underqualified or incompetent rigger can cause accidents due to the following : - answer -Improper Calculations -Poorly maintained rigging equipment -Bad technique An underqualified signal person can cause accidents due to the following :
- answer -Non standard or wrong signals -Not following laws and company procedures -Not checking radios or proper function -Dereliction of duties Do not keep hook attached to load while travelling with load on deck of a _________ _________ _________ - answer Carry deck crane Do cranes need a fire extinguisher in the cab? - answer Yes a 10 B-C
RT Cranes (Rough Terrain) - answer are only rated for pick and carry operations have been known to tip over backwards with no load Outrigger floats must be secured to ______ - answer pads A durable legible _______ _______ must be secured to the crane - answer load chart Unless approved by the manufacturer ____________ ______________ _____________ ___________ are not supposed to lift over the front - answer Carrier mounted telescopic cranes A crane that performs drag line, clam shell, drop ball magnet, container handling, concrete bucket, and marine operations - answer does not require anti two block warning (unless pile driving or hoisting people) Crawler cranes - answer can be center mounted or offset mounted Never assemble a crane ______________ ____________ _______________ - answer under power lines Assembly / Disassembly Specific Hazards - answer -Ground Conditions -Blocking -Location of Blocking -Verify assist crane loads -Boom and Jib pick points -Center of Gravity -Stability upon pin removal -Snagging -Struck by counterweights
Frequent Inspection items to check - answer -Control mechanisms -Control drive mechanisms -Air and hydraulic systems for leaks -Hydraulic fluid levels -Hooks, latches -Wire rope reeving -Wire rope -Electric apparatus -Tires -Ground conditions -Level each lift, move, and set up -Operator cab windows -Rails, rail clamps, rail stops Crane documents - answer must be present at time of inspection for the inspector, or they are considered to be nonexistent Safety Devices on Crane that must be functioning prior to use - answer - Outrigger check valves -Horn -Rail clamps -Boom stops -Foot pedal brake locks -Jib stops -Crane level indicator Category 1 Operator Aids - answer - Boom hoist limiting device
- Luffing jib limiting device
- Anti two block device
Category 1 Operator Aids Timeframes - answer - Parts must be ordered within 7 Days
- Repairs must be made within 7 Days Category 2 Operator Aids - answer - Boom angle or radius indicator
- Jib angle indicator
- Load weighing or similar device
- Outrigger / stabilizer sensor
- Hoist drum rotation indicator Category 2 Operator Aids Timeframes - answer - Parts must be ordered within 7 Days
- Repairs must be made within 30 Days During a wire rope inspection, booming down ____________________ - answer is not required OSHA requires a minimum of ____________ to remain on the drum when a load is at its lowest point - answer two rope wraps A rope with reduction in nominal rope diameter of ____ must be removed from service - answer 5% Rope Lay - answer The distance it takes for a strand to make one complete revolution around the rope Rotation resistant rope - answer is created by having core strands lay one way outer strands lay the alternate way Rotation resistant ropes should not - answer be used for boom hoist reeving
Center of gravity - answer The point in the object around which its weight is evenly distributed Incorporated by Reference - answer The inclusion of non government or other standards that when used with the word "shall" become an enforceable part of the original law. To prevent sling damage when lifting sharp objects - answer Use softeners All beams must be - answer labeled with weight and capacity When using a shackle ______________ - answer do NOT exceed a multiple sling angle of more than 120 degrees. Use a beam. Hooks, Remove from service if - answer 10% - Wear 5% - Throat stretch Anything visible - Twist Missing or damaged latch Shackles, Remove from service if - answer 10% - Reduction of pin or body Body Spread Heat or chemical damage Nicks, gouges or cracks Shoulder of pin not flush with shackle body Bent pin Never replace shackle pin with - answer a regular bolt Do not exceed - answer 120 degrees with sling legs
When pulling at angles, never - answer use a non shouldered eye bolt Load Angle Factor - answer L/H Weight per sling - answer Load Angle Factor x Load Weight / # of Slings When determining hardware sizes such as hooks, shackles, or eyebolts, one must - answer Consider sling angle a 30 * double sling has - answer the same (100%) capacity as a single leg Never use a sling below a - answer 30* angle Cast Iron - answer Shall not be used Factory of Safety - answer All parts of the crane and supports shall be designed, constructed and maintained to withstand all stresses resulting from intended use with a safety factor of not less than 2. A sling angle decrease the load applied to them also decreases. True or False? - answer False Booming down will decrease the radius. True or False? - answer False Grooves in a sheave may be a sign of - answer Rope damage Wind conditions exceeding what mile per hour require shutdown of operations? - answer If working near power lines and the voltage is unknown what must be done? - answer Call the power company and find out
A sling is in perfect condition, yet you cannot read the rated capacity. You should - answer Take it out of service A person who by possession of degree, certificate, or professional standing by or by extensive knowledge or training can solve problems relating to subject matter is: - answer qualified A load chart is only effective if - answer - It is for the crane it is used with
- The outriggers are fully extended or it is listed for partial extension on the chart
- the crane is level A crane found to need corrective action in a monthly inspection may be used until the annual inspection requires a repair. True or False? - answer False It is ok to tag out a hoist with a bad rope and continue using a crane until the rope is replaced. True or False? - answer True Which statement is true? A single leg sling has the same capacity as a 2 leg sling at a 30 * angle A wire rope sling with 6 broken wires in one rope lay must be removed from service - answer A single leg sling has the same capacity as a 2 leg sling at 30* angle When using radios what must be done prior to the lift? - answer Only discuss signals on the radio Test it with the operator to ensure it works Agree on a designated channel A travelling crane that makes a sudden stop will decrease the dynamic load. True or False? - answer False. it will increase the dynamic load
A crane can be overloaded with much less than its maximum capacity. True or False? - answer True. Other factors can create an overloaded situation Who is responsible for keeping people out of the work area? - answer The signal person it is ____ necessary to boom down during shift inspections - answer not Which statement is true? A sling in good condition with an illegible tag can be used A wire rope sling with 10 broken wires in one rope lay must be removed from service - answer A wire rope sling with 10 broken wires in one rope lay must be removed from service The moment of balance is when the crane is - answer equal to the load Always give the function signal first and the crane designation second when signaling a duel crane pic. True or False? - answer False How long must an annual inspection be kept for? - answer 12 months Where should a level be set on a mobile crane? - answer Carrier A crane idle for 3 months must have what type of inspection? Annual --- incorrect Monthly Shift Post assembly - answer A crane must have at least ______ of a tank of fuel during operation - answer 1/
A shackle with 15% wear is ok to use True or False? - answer False - this % is the threshold to remove this item from service and can no longer be used A non standard hand signal may be used if necessary and is agreed upon prior to when the lift begins True or False? - answer True - As long as it is necessary and is agreed upon prior to the lift begins How often must a crane be inspected? - answer Before or during each shift, monthly, and periodic Only a signal person who is trained and designated can give a stop signal True or False? - answer False - anyone can give a stop signal A wire from the core of a wire rope is protruding. You should - answer Remove it from service A crane has a crack in the bottom right corner of the windshield. The crane operator - answer May continue if his vision is in no way obstructed Is it ok to use a 2 leg sling bridle at a 25* angle - answer No never use a sling less than a 30* angle A non discussed, non standard hand signal is given to the crane operator. What should he do? - answer Safely stop and wait for a standard signal Humidity need not be considered when working near high voltage power lines True or False? - answer False. Humidity DOES need to be considered
Transmission (radio) towers pose no danger on any site - answer False. Transmission towers DO POSE DANGER What is an anti two block device? - answer Prevents any function from allowing the block to come in contact with the boom tip Line of communication assigned by the employer that controls communication to only one signal person is : - answer Dedicated channel The signal person must always - answer Be in clear view of the operator Hoist - answer The act of raising, lowering or moving a load in the air Raising the boom will decrease its capacity True or False? - answer False - Raising the boom does not decrease capacity Cribbing should be at least how many times bigger than the outrigger pad? - answer 3 When hoisting people with a multiple leg bridle, all legs must bear equal weight. Except a three leg bridle. True or False? - answer False - Three leg bridle makes no difference. All legs must bear equal weight. It is acceptable for a certified welder to weld something on to a hook True or False? - answer False. No. not good enough. needs to be documented and there is more involved Which statement is true? A three leg bridal can always lift three times the amount of a single leg
Formula for determining sling weights - answer L / H * the load weight / # of slings Which statement is true? If a crane has a front outrigger it is acceptable to life over the front Only lift over the front of a crane if it is acceptable per the manufacturer - answer Only lift over the front of a crane if it is acceptable per the manufacturer We are working with a crane you know to be unsafe. You should - answer Let the management know you refuse to work in an unsafe environment if necessary Never use unshouldered eye bolts when lifting at angles True or False? - answer True - never use these when lifting at angles What types of inspections must be performed on a cranes wire rope according to OSHA 1926.1423? - answer Shift, Monthly, Annual When is it ok to lift a person with a headache ball? - answer Never - Never lift a person with a headache ball What is the minimum distance required when working near power lines? - answer It all depends on the voltage It is ok to use a grade 10 hardened bolt in a shackle instead of a pin True or False - answer False. Never use regular bolts in shackles Non rotation resistant rope with 3 broken wires in one strand in one rope lay must be - answer Removed from service Past experience is an acceptable form of determining weights True or False? - answer True - past experience is acceptable
If your machine comes in contact with a power line - answer If you cant stay put, hop from the machine with both feet together and hop or shuffle with feet close together Never use a rotation resistant rope here - answer for a boom hoist What is shown on a load chart? - answer Gross Load When attaching slings to a hook the greatest included angle before a reduction in capacity requires a shackle is: - answer 90 degrees Why is span blocking bad when setting up cribbing? - answer Reduces capacity by up to 30% A signed monthly inspection must be retained for - answer 3 months Values listed below a bold line on a load chart are based on - answer Structural Integrity Eyes in wire rope slings used to hoist personnel must be fabricated with - answer Thimbles Its ok to use a synthetic sling with a knot in it True or False? - answer False. No knots allowed in synthetic slings A handsignal chart and electrocution danger decal are discovered to be illegible during an annual inspection, this constitutes a ( ) according to ASME B30.5 - answer Deficiency rotation resistant rope with this many broken wires must be removed from service - answer 2 broken wires in 6 rope diameter
Name two types of lifting beams - answer rigged and spreader
