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142 Cards in this Set
- Front
- Back
The grade of steel most commonly used in wire rope is? |
Improved plow steel |
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A grouping of round or shaped wires helically laid around a core is called? |
A strand |
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Typical strand grades are high strength, common, seimens-martin and? |
Extra-high strength |
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Under normal working conditions the___________ provides support for the stands in a wire rope. |
Core |
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What type of lay is indicated when the strands are wrapped around the core in a clockwise direction? |
Right lay |
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If the individual wires of each strand run parallel to the direction of the run of the rope, the rope is classified as__________. |
Regular lay |
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If a rope is classified as 6x19 seale IWRC, the 6 tells you __________. |
How many strands are in the rope. |
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A crane transmits its power to the wire rope through the ________. |
Drum |
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In identifying a wire rope, the following characteristics are used: length, finish, lay, grade, core type, whether it is preformed, and the ________. |
Diameter |
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If a rope is identified as 1,400 ft 1/2" 6x37 WS pref RRL EIPS FC, the core of the rope is indicated by the letters ___________. |
FC |
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To prepare the end of a rope for reeving,__________ can be applied. |
Seizing |
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A wedge socket has an effective CT of 80% and the nominal breaking strength of the rope is 10,000 pounds. The failure point of the wire rope assembly is ________ pounds. |
8000 |
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The lowest effeciency rating of a wire rope with a loop or thimble mechanical splice is ________ percent. |
100 |
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Wire rope clips have an effeciency of _________ percent. |
80 |
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The type of socket in which the shank is pressed or crimped to the wire rope is known as a ___________ socket. |
Swaged |
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In a poured socket, the rope can be secured to the socket by epoxy resin or molten _______. |
Zinc |
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When using a wedge socket, the dead end of the rope should be secured to the ________. |
Wedge |
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When rigging a load, the center of gravity must be ________ the hook. |
Below |
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When personnel are being lifted in a manbasket, the total weight of the load, basket, and rigging may not exceed _________ percent of the Crane's rated load. |
50 |
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Standardized hand signals for mobile cranes have been developed by _____________. |
ANSI |
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If a malfunction occurs during operations, the first thing to do is_______. |
Lower the load if possible. |
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Lowering a load just above a landing zone, then placing cribbing and blocking, is considered ___________. |
Dangerous |
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When blocking a load after the load is set, take the load stress off the sling ___________. |
After the blocking is set and secured |
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The OSHA standard governing mobile cranes is ________. |
1926.1400 |
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A competent signal person must be stationed at all times whenever a crane is working within ________ of an energized power line. |
A boom's length |
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The minimum safe distance from a power line of over 250,000 volts is __________ feet. |
20 |
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The first response to a fire is to __________. |
Cease crane operations |
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A sudden loss of crane load may cause a ___________. |
Whiplash effect |
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Cold weather exposure symptoms include all of the following except: shivering, numbness, hyperactivity, or weak muscles. |
Hyperactivity |
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Symptoms associated with over heating include all of the following except: pale clammy skin, cramps, headache and nausea, or gray, tingling skin. |
Gray tingling skin. |
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When driving mobile cranes from one site to another, you should _______. |
Drive with your lights on |
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When driving a mobile crane, signal a reverse move with ___________ horn blasts. |
3 |
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The most important rigging precaution is determining the __________ of all loads before attempting to lift them. |
Weight |
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Information on startup checks and inspection guidelines for specific mobile cranes is found in __________. |
The manufacturer's manuals |
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Hoisting or rigging operations must be halted when the temperature is __________. |
Low enough that the hoist or crane steel structures could fracture upon shock or impact |
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Rapid swinging of suspended loads subjects the equipment to_________, which can cause a collapse. |
Additional side loading |
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If a crane with an internal combustion engine is used in an enclosed space, OSHA requires sit management ____________. |
Test for levels of toxic fumes |
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Tag lines are attached after the rigger verifies that _______. |
The load is balanced |
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A Crane's ___________ must be barricaded so that employees don't get hit. |
Tail swing radius |
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If a crane or load comes in contact with power lines, the crane operator should ___________. |
Stay in the cab of the crane if possible |
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If leaks are seen at hoses, pipes, or fittings in a hydraulic crane, the crane operator must _____________. |
Lower the load to the ground and secure the crane until the leaks are checked. |
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When filling a hydraulic reservoir tank, make sure the tank is depressurized to prevent ______________. |
Hot oils from spraying out. |
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What information does the anemometer provide? |
Wind speed |
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The throttle lock _______________. |
Gives the operator the ability to lock in a specific engine speed for the duration of the operation. |
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The load moment indicator (LMI) could be used to __________. |
Reconstruct a crane accident/incident |
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When using two joystick controls, it is possible to ____________. |
Control several functions |
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A load moment indicator (LMI) is a ___________ device. |
Computer |
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The superstructure angle/level sensor will ensure that the crane is operated within ________ percent of level. |
1.0 |
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The selected controls lockout system ___________. |
Prevents the operator from using certain controls during a critical life situation. |
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The LMI computer calculates the load radius and boom tip height by using the trigonometric functions _________ and ____________. |
Cosine;Sine |
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Which load moment indicator (LMI) input will be affected when the crane is not positioned properly? |
Superstructure angle/level sensor |
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What load moment indicator input senses the difference between the horizontal position of the crane superstructure and the vertical position of the main boom? |
Boom angle sensor |
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An operator aid that is mandatory on new cranes is the _________. |
Anti-two-block warning device |
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The hoist drum rotation indicator is a __________ indicating device. |
Mechanical |
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The purpose of the load moment indicator is to provide the operator with ____________. |
Information on the status of the crane with respect to lifting the load. |
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The result of low engine speed is ____________. |
Poor control of crane functions |
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A transducer is _____________. |
A device used to convert one form of energy to another. |
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The load moment indicator detects the position of the outriggers by sensing the position of either the ____________. |
Outrigger hydraulic cylinder of the outrigger support locking pins |
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Which of the following operator aids is associated with the load moment indicator? Load indicator, throttle lock, drum hoist rotation indicator, or selected controls lockout system. |
Selected controls lockout system |
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Which of the following sensors is associated with an input to the LMI? Axle lockout override switch position sensor, tire pressure sensor, jib angle sensor, or engine distress sensor. |
Jib angle sensor |
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Which of the following is independent of the LMI? boom position, throttle lock, counterweight sensor or load radius. |
Throttle lock |
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The LMI calculates the boom tip height by multiplying the sine of the ___________. |
Boom angle |
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A sensor input that can be optional for an LMI system is a ___________ sensor. |
Jib angle |
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Which device can be used to to determine boom length? |
Pressure transducer |
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Which LMI input, if installed, is directly related to the weight indicator in for determining crane capacity? |
Counterweight sensor |
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A sense of touch is required when using a ___________. |
Hoist drum rotation indicator |
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When threading a wedge socket, the live section of the rope should be aligned with the center line of the ____________. |
Pin |
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When mounting U-bolts, the saddle should be positioned so that the saddle ____________ the live section of the rope. |
Is always on |
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A written, dated and signed inspection report must be prepared _________. |
Monthly |
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A sudden stop when lifting or lowering loads can cause _________ of the wire rope. |
Birdcaging |
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A rope should be replaced if two randomly broken wires are found within an area of __________ rope diameters. |
Six |
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Pitting on a wire rope is usually a sign of ____________. |
Internal corrosion |
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Block twisting can be reduced by ____________. |
Using larger sheaves |
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Worn bearings on a sheave can cause __________, which will accelerate wear on a wire rope. |
Significant vibration |
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If flanges on a sheave become damaged, the can cause ____________. |
The wire rope to jump out of the groove, resulting in damage to the rope. |
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The D/d ratio measures between the rope diameter and the ___________ diameter of the sheave. |
Pitch |
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A long range inspection and maintenance program should include __________. |
Accurately date records |
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The number of time that the wire rope passes through the block, leaving a span of wire from one sheave, is know as the _________. |
Part of a line |
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The nominal breaking strength of the wire rope divided by the safety factor equals the ___________. |
Allowed weight for a single line pull |
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What is the safety factor for rotation-resistant rope? |
5.0 |
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The safety factor for live or running rope for supporting loads is __________. |
3.5 |
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Given a load of 32,000 pounds and a wire rope that has a maximum allowable line pull of 9000 pounds __________ parts of line are required to safely lift the load. |
4 |
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The preferred direction for removing a wire rope from a storage reel to a drum is from the __________ of the reel to the _________ of the drum. |
Top;top |
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Technically, the site condition and setup for a crane is the responsibility of the ______________. |
Employers and owners |
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In a complex site, structural engineers, geo-technical engineers, riggers, and crane manufacturer representatives may all need to be involved in______________. |
Site analysis |
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The combination of ___________ can severely damage the suspension of the crane. |
Rough roads and crane weight |
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When determining whether or not there is adequate access, you must consider the level, grade, and __________ of the roadways. |
Compaction |
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When setting up a lattice boom crane, one consideration is having enough space ____________. |
To fully extend the boom on the ground |
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A crane must be set up within __________ percent of level; this means the slope of the ground cannot exceed one foot for every __________ feet. |
1;100 |
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When the operator has any doubt about the compaction of the soil, ___________ should be used. |
Matting |
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If outriggers are used, the __________ must be securely fastened to the outriggers. |
Float pods |
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How often must standby cranes be inspected? |
Semi-anually |
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A crane that has been idle for four months must be given an inspection conforming to the requirements of a ________ inspection. |
Frequent |
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When two cranes are operating near each other, it is important that the operator's have ___________. |
Eye contact with each other |
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Law enforcement officers are sometimes used during the lift operations to ____________. |
Provide traffic control when a crane is operated from a public thoroughfare |
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When a crane is used to transport a load to another location, the ____________ should ensure that the path the crane will follow is clear of any hazards. |
Signal person |
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During lifting operations, what is the minimum clearance from overhead power lines rated at 90kV? |
15 |
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The minimum required clearance from overhead power lines rated at 850kV for a crane in transit is _________ feet. |
20 |
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The safety Manager tells you to review the safety procedure for a crane you will operate for the first time. These procedures are located in the ___________. |
Manufacturer's operating manual |
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Extend arm with closed fist. Extend index finger. |
Swing |
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Extend arms in front of body, palms up, fist closed, and extend thumbs out to the sides. |
Extend boom |
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Extend arm, palm down and hold. Move hand and forearm in horizontal chopping motion. |
Stop |
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A common device found in cranes that take various signals as input and compares them to a defined set of parameters based on the machine's load chart and gives the operator visual and audible feedback is known as ___________. |
Load moment indicator (LMI) |
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Two-blocking occurs when the _________. |
Hook block or headache block makes contact with each other |
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In an emergency, the selected controls lockout system will _________. |
Prevent the operator from worsening the situation |
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An input device called a cable reel is part of the _________. |
Boom length sensor |
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The controls for hoisting the load, hoisting the boom, swinging the boom and telescoping the boom must have a means for __________ without the use of positive latches. |
Holding them in nuetral |
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The travel distance on foot pedals may not be more than _________ inches |
10 |
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The force on foot pedals may not be more than ________ pounds |
50 |
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When you are starting to lift you notice that the gauges are showing n incorrect reading. You should _________. |
Refuse to lift and contact your supervisor |
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Lifting a load that exceeds the limits on the load chart is ___________. |
Allowed for test purposes only |
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When operating a crane, bring the hook over the load gently to ________. |
Minimize swinging |
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When the crane is shut down and the boom lowered to a maximum of 60 degrees, the crane should be set so that the boom is __________. |
Pointing directly into or away from the wind |
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Performing a post operational inspection is important because __________. |
Lifting components are subjected to stress and wear during every lift |
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Draining any accumulated water and sludge from the air reservoirs is part of a __________. |
Post-operational inspection. |
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Clearance requirements for overhead power lines. |
OSHA |
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Total weight of the crane and ground bearing pressures on tracks and outriggers. |
Manufacturer's operating manual |
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The frequency of a periodic inspection. |
OSHA |
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OSHA requires that a hook be replaced if it's body has been twisted __________ degrees or more from its original plane. |
10 |
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When using a shackle with a hook, the shackle body should be hung on the hook. True or false. |
False |
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Shoulder less eyebolts can be used to make _________ of a load. |
Vertical lifting pulls only |
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The safe working load of a hook-end turnbuckle is great than comparably sized eye and eye turnbuckles. True or false. |
False |
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A beam clamp should be replaced if its jaws have been opened more than _________ percent of its normal opening. |
15 |
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The strength factor of wire ropes used for general rigging and hoisting (without personnel) must include a safety factor of at least___________. |
5 to 1 |
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For general hoisting purposes, most wire ropes are the _________ type. |
Right lay-regular lay |
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One of the fastest ways to lubricate wire rope is to move it through a pan of ____________. |
Heated oil |
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A new rope should be used for about __________ without a live load to make sure it is compatible with the sheaves and drum of a rigging configuration. |
1 hour |
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If a single wire in a 6 x 19 wire rope sling breaks, the sling loses about ________ percent of its strength. |
1 |
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When the eyes of a synthetic web sling are seen at right angles to the plane of the sling body, the sling is called a ___________ sling. |
Twisted eye |
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When two slings positioned at a sling angle of 60 degrees are being used to lift a 1,000- pound load, what is the tension on each sling? Assume a single angle load factor of 1.155 |
577.5 pounds |
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Chain slings are normally used for ____________. |
Lifting rough castings |
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Chain should be destroyed after being annealed _________ times. |
6 |
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A ____________ rope alternates large and small wires to combine flexibility with abrasion resistance. |
Warrington |
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A partial kink in a rope is known as a ___________. |
Dog-leg |
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A thorough inspection of all wire ropes in use should be made at least once a __________. |
Month |
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The ___________ sling is especially well suited for basket hitches where sharp bends are encountered. |
Braided |
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The ___________ sling is used to prevent marring or scratching of polished surfaces. |
Synthetic web |
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Optimum sling angles fall between ____________ degrees to horizontal. |
60 and 45 |
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A wire rope sling should be discarded if wear exceeds _________ of the original rope diameter. |
1/3 |
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A metal mesh sling should be discarded if abrasion has caused a ___________ percent of wire diameter. |
25 |
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A natural fiber or synthetic rope line used to control the swinging of the load in hoisting activities is a __________. |
Tag line |
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Which OSHA regulation governs the lifting of personnel? |
OSHA 1926.1431 |