NCCCO Core Real Exam Questions and Answers: A Guide to Crane Operation, Exams of Ethics

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NCCCO CORE REAL EXAM

QUESTIONS AND ANSWERS.

If taking sides strain on a boom what concerns the operator the most - Solution Boom damage If a crane load chart has capacities listed in the shaded area this means that - Solution If overloaded structural confidence will be compromised As the layers of rope on a drum increase the allowable line Pull wil - Solution Decrease Of the following actions which one will most likely cause a side load condition - Solution Abruptly starting or stopping the swing Cording to OSHA with any hook ball or attachment at its lowest point a minimum of blank reps must remain on the drum at all times - Solution 2 What is the minimum distance of crane must maintain from powerlines rated below 50 KV - Solution 10 feet What is the best procedures to follow if underground utilities are present - Solution Contact utility company For boom is reeves eccentrically to the block the most common result would be - Solution Twisting of the boom What is the safety factor for 6 x 19 IWRC wire rope - Solution 3.5- What is the safety factor for rotation resistor wire rope - Solution 5- What is the safety factor for rigging hardware - Solution 5- What is the safety factor one hoisting personnel using IWRC wire Rope - Solution 7-

What is the safety factor hoisting personnel using rotation resistance wire rope - Solution 10- Unless the manufacturer states otherwise the wind speed to seize hoisting Shall be - Solution 30 mph When hoisting personnel OSHA requires wind speed not to exceed - Solution 20 mph Who has the responsibility of determining the correct weight of the load - Solution Supervisor When an operator leave there a crane they must - Solution Land load engage all locks and Pawls and lock machine When is it safe to work closer than alarm for distance from any powerline - Solution When the utility company certifies that the lines are D energized When operating a crawler crane what is the most unstable allowable quadrant of operation - Solution Side What is not a good location for crane set up - Solution Above utilities If an operator arrives at a job site and the crane is already set up how would he checked the main an auxiliary breaks - Solution Left the load a few inches off the ground and test the brakes Tipping capacities for crawler cranes are based on - Solution 75% The term load radius is best defined as - Solution The distance from the center of rotation of the crane to the center of gravity of the suspended load Should the load be applied when determining the proper boom angle - Solution Yes When telescoping the boom section of a rubber tire which section should be telescoped first - Solution All sections should be telescoped equally Hooks must be discarded if a twist more than is found - Solution 0 degrees

When using cable or nylon spreaders it is important to remember - Solution The lower the spreader angle the greater the tension When is spinning load presents a danger the operator should - Solution Use a tagline Parts of line means - Solution The number of lines running through the load block A sudden start or stop while operating a crane produces - Solution A dynamic load What percent of a cranes rated capacity is it classified as a critical lift - Solution 75% During disassembly of a long boom the hog lines are connected on a maximum cantilever point and the boom is slightly lifted off the ground which pins are to be removed next - Solution The bottom pins ahead of the cantilever point If you were to make a left using a four legged bridle how many legs are you going to calculate the load - Solution 3 According to OSHA all cranes equipped with a luffing jib must have - Solution Check valve When performing picking Carrie with a boom truck the speed limit is - Solution As prescribed by the manufacturer When determining backward stability the crane must be set up under the following conditions - Solution Crane unloaded and load block on supports Crane on outriggers Maximum boom angle Crane SHOULD NOT BE in the longest possible boom On a crane load chart the area referred to as over the front is - Solution Different depending on the crane manufactures definition

When cranes included within the scope of ANSI are mounted on barges or pontoons the cranes load rating shall be - Solution Modified as recommended by the manufacturer The first layer of a Hoist drum should have a pitch diameter of no less than times the rope diameter - Solution 18 Drum rotation indicators must be installed on all hoist leavers - Solution True On a hydraulic boom hoist pistons a must be provided in case of hydraulic failure - Solution Pressure relief valve All cranes equipped with a torque converter must have a - Solution Clutch reachable from the operators station Controls for operating a superstructure mounted power plant shall include all of the following except - Solution Means to shut off two cycle diesel engines in emergency Forces on a cranes hand lever Shall not exceed - Solution 35 lbs Forces on a cranes Foot pedal shall not exceed - Solution 50 pounds The travel distance on a cranes two way lever must not exceed from the neutral position - Solution 14 inches The travel distance on a cranes one-way lever must not exceed from the neutral position - Solution 24 inches Frequent inspection occurs - Solution Every shift Frequent inspection should be performed by - Solution Competent person Periodic inspection occurs - Solution Weekly to monthly When using single saddle or U bolt type clips the saddle shall NEVER be installed on - Solution The live end The pitch diameters for boom hoist sheaves shall not exceed - Solution 15

When is it permissible to be under the boom when assembling or disassembling a boom - Solution When the A/D Director proves it is in feasible not to work under the boom When installing pins on a lattice boom how should the pins be installed - Solution Tapered side out When assembling or disassembling a lattice boom crane the amount of boom extended out past the bridal/equalizer is known as - Solution Cantilever length During assembly or disassembly of cranes no part of the crane or its components can come within of powerlines - Solution 10' If any part of the crane rigging or attachments load/line can come within of a power line a dedicated spotter must be provided - Solution 20' Up to 50 KV - Solution 10 feet Over 50 to 200 kV - Solution 15' Over 200 to 350 KV - Solution 20' Over 350 to 500KV - Solution 25' Over 500 to 750 KV - Solution 35' Over 750 to 1000Kv - Solution 45' If operating a crane in proximity of power lines over 1000 V what is the minimum clearance - Solution Determined by the utility company During hoisting operations in proximity of powerlines all tag lines and rigging should be - Solution Synthetic Powerlines or presumed energized unless - Solution The utility companies certifies the lines are D energized and they are visibly grounded Up to .75 kv - Solution 4'

Over .75 to 50 Kv - Solution 6' Over 50 Kv to 345 Kv - Solution 10' Over 345 kvvolts to 750 kV - Solution 16 feet 750 kV to 1000 kV - Solution 20 feet What type of inspection requires no documentation - Solution Shift During what inspection classification does inspection of ground conditions take place - Solution Shift I frequent inspection is made - Solution Weekly to monthly A periodic inspection is made - Solution Monthly to annually A shift inspection must be completed - Solution Before the end of shift What inspection classification requires disassembly of a crane as necessary - Solution Annual/comprehensive Equipment idle for more than three months must have an inspection performed in accordance with classification - Solution Monthly Documentation of the annual/comprehensive inspection must be retained for a minimum of - Solution One year Hooks with locks and latches must be used except when setting wooden trusses in such situation can be used - Solution J hook When is used to have a crane to hoist personal permitted - Solution When there is no other Safeway When hoisting personnel the total weight of the load basket attachment and rigging must not exceed of the rated load - Solution 50% Any gate or means of access/egress in a personal basket must not - Solution Swing outward

When handling boom sections what type of sling is preferred - Solution Synthetic The distance it takes a strand to make a complete revolution around its core is referred to as - Solution Lay length How many random broken wires must be present for running route to be removed from service - Solution Six In one lay How many broken wires and one strand of one lay must be present for removal - Solution Three What is the minimum number of broken wires must be present and standing rope to warrant removal - Solution Two////One is allowed How many broken wires are permitted at and end connection of a pendant line - Solution 1 How many broken wires present in rotation resistant wire rope warrant removal - Solution Two in six diameters What is the safety factor for running rope - Solution 3.5- What is the safety factor for rigging - Solution 5- What is the safety factor for rotation resistant wire rope - Solution 5- In order of hitch strength goes as follows - Solution Basket vertical choker Can a crane's roof serve as a workstation for rigging or assembly/disassembly or maintenance - Solution Only if it has the capability of supporting 250 pounds A load applied at an angle to the vertical plane of the boom is referred to as

• Solution Side load///// when you pick some thing not being directly over the Center of the load The drum flange shall not extend a minimum of what from the top layer of rope - Solution Half an inch

Boom hoist sheaves shall have a minimum pitch diameter of - Solution 15 times rope diameter Load hoist sheaves shall have a minimum pitch diameter of - Solution 18 times rope diameter Lower block sheaves shall have a minimum pitch diameter of - Solution 16 times rope diameter All load test shall not exceed what of the manufacturers rated capacity - Solution 110% Before leaving his crane unattended the operator must - Solution Land the load set all dogs and pawls and shut the engine What is the minimum clearance needed between the cranes counterweight and any obstacle - Solution 2 feet When setting up a crane near a ditch or excavation you should stay what distance from the edge of the excavation - Solution Two times the depth of the excavation When setting up a crane near a retaining wall you should stay what distance from the edge of the wall - Solution The same distance as the walls height When performing duty cycle work the rule of thumb is to - Solution Use 80% of the manufacturers load chart A cranes quadrants of operation is - Solution Different depending on the manufacturers load chart When hoisting personnel the type of hook to be used must be the type that can be - Solution Locked and latched Load rating charts are based on a percentage of the loads which produce a tipping condition and the least stable direction the percentage is watt for a truck crane - Solution 85%

Unless the operator takes a count of boom deflection when lifted off the ground a properly rigged load may - Solution Swingout away from the crane According to be 30.5 mobile crane standard it's OK for an operator to leave the cab of a crane with the engine running so long as - Solution The operator keeps the crane in view and restricts access to the area around the crane Unless the manufacturer states otherwise truck cranes generally have no lifting capacity over which area - Solution front Working radius is defined as the distance from the - Solution Center of rotation of the crane to the center of gravity of the load Rough terrain cranes capacities are generally greater over the - Solution Front Truck crane capacities are usually greater over the - Solution rear A crane is set up with three of us for outriggers fully extended and the fourth retracted unless the manufacturer states otherwise the capacity of the crane in this configuration will be found in the - Solution On Rubber chart Sideloading of the cranes boom is permitted - Solution Only with freely suspended loads Blocking cribbing may be placed under the Outrigger beams - Solution Never they go under the pads Timber blocking placed under the tips of the tracks on a crawler crane will: - Solution Make the crane more stable When handling boom sections the best place for slings to be attached is - Solution At the pin connection points at the ends of the top chords The tipping access of a crawler crane - Solution Depends if the idler or sprocket are in line or offset from the track rollers

When setting a crane up on outriggers the wheels of the crane should - Solution be just high enough off the ground to relieve the tires of crane weight On pick and carry operations you should - Solution Keep the boom as short as possible On a crawler crane ground bearing pressure is greatest - Solution Over the corner When preparing to hoist a light load the hook should be positioned - Solution Directly above the loads center of gravity It's OK to temporary bypass a cranes overload warning system - Solution During assembly/disassembly operations On a crawler crane the part of the low charge governed by stability is based on what percentage of its capacity - Solution 75% When the boom length of the crane falls between the lengths listed in the load chart you should use the next capacity listed for - Solution The next longest boom length A Jibbs offset is the Jibbs angle to the - Solution Boom All hazards and potential problems should be discovered - Solution Pre- operational work site inspection What was the result of boom deflection be - Solution Increased Boom radius When a crane is out of level by 1° it will lose the most capacity at what configuration - Solution Long boom minimum radius What is the purpose of using a spreader beam - Solution Support long hard to control loads Which of the following actions is most likely to cause two blocking - Solution Telescoping the boom out

When operating a crane on a barge the crane must be - Solution Secured to the barge When using a four legged bridle the capacity is calculated using - Solution Three legs On a standing wire rope broken wires Adam and connection means the rope must be replaced - Solution Two Line pull is - Solution The amount of weight a drum will hoist for a given layer Backward stability on a mobile crane can become an issue when the crane is working - Solution Over the side at a minimum radius Rotation resistant wire rope requires a higher safety factor because - Solution Internal damage occurs Timber mats work best when they are - Solution Bolted together Blocking under floats shall be - Solution Sufficient to support the crane and the load When operating a crane with a long boom on uneven ground you should - Solution Block under the pad and keep a 90° angle between the cylinder rod and pad When booming down a rough terrain crane and extending out Riggers from the cab you should - Solution Post a signal person One swing a suspended load on any crane with crawlers the most ground pressure will be exerted - Solution Over the corner A luffing jib on a conventional or hydraulic crane will - Solution Boom up or down independently of the main boom On a crane off level by 1% with a main boom height of 100 feet the whip line would be off-center by - Solution 12 inches////12 inches for every 1° for 100 feet

The crane center of gravity were very the most swinging from the rear to the side with what type of crane - Solution Truck crane When is sideload is introduced to a lattice boom what part of the boom would encourage the highest stress - Solution Boom tip Voice signals must include - Solution Function and direction Distance and speed Function and stop When assembling or disassembling a lattice boom when is it permissible to work under the boom - Solution When the AV Director shows it is in feasible not to and the limits time and movement////safe=never only when says permissible Eccentric main boom reeving can cause - Solution Twisting of the boom When putting wire rope on a drum the rope can be spoiled to within of the top of the drum - Solution Half an inch To prevent unauthorized access to the cranes working area though needs to be barricaded - Solution Working radius What is the minimum distance from the cranes counterweight and any obstacle - Solution 2 feet Which of the following weather conditions could restrict or stop hoisting activities - Solution Wind gusts Rigging hooks must be discarded if the throat opening is increased by more than - Solution 5% A crane performing personal lifts must not exceed of its rated capacity - Solution 50% When a load is being landed in the fall zone who should be in the fall zone - Solution Qualified rigger During assembly or disassembly of the crane when is fall protection required - Solution If the fall possibility is greater than 15 feet

Boom extensions and Jibbs are used - Solution To increase height Capacities above the bold line on the load chart are based on - Solution Structural strength When is it safe to work under the boom while erecting or dismantling - Solution Never safe What is the minimum clearance needed between the crane counterweight and any obstacle - Solution 2 feet When working around powerlines you must - Solution Never stockpile material under powerlines Maintain the correct distance according to the rated kilovolt Ground the crane with the proper grounding cable When using a crane to pick and carry a load you must - Solution Tie off the load When using cribbing under your outriggers you should have at least times the total float area covered - Solution Three times the float area Hydraulic pumps supply to the cranes hydraulic system - Solution Pressure The minimum distance between the cranes boom and 50 kV high-voltage wires should be - Solution 10 feet Sideloading may be caused by - Solution Starting or stopping the swing to rapidly What is the best procedure to follow when underground utilities may be present - Solution Contact local utility company Eccentric main boom tip reeving causes - Solution Twisting of the boom Who has the responsibility for determining the correct weight of a load - Solution supervisor

When an operator leaves the crane he must first - Solution Put the load on the ground and put all dogs or pawls in If replacing the hoist line wire rope on a crane how do you determine the size or type of wire rope to use - Solution Use manufactures operators manual or load chart After the crane has been checked out and before lift operations begin the crew should - Solution Have a pre-lift meeting AcCording to Inzi personal platform lift should not be made with wind an excess of - Solution 20 mph When is it safe to work closer than allowable distance from powerlines - Solution When utility company says lines are de-energized When operating a truck crane what is the most unstable allowable quadrant of operation - Solution side/////says allowable When an operator arrives at the job site and the crane is already erected how would the operator check the main auxiliary hoist brakes - Solution Lift the load off the ground and apply the brake Who gives the operator hand signals - Solution The person assigned prior to the lift Why are use mats or cribbing - Solution To reduce ground pressure Tipping capacities of crawler cranes are based on what percentage of tipping - Solution 75% Should the load be applied when determining the proper bloom angle - Solution Yes Load radius is the distance from the center of gravity of the suspended load to the - Solution center of rotation Net capacity is equal to - Solution Gross capacity minus capacity deductions