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When making a multiple crane lift it is important for the operator to understand that
The weight may increase if the other crane lands the load
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if a crane is not setup level and the operator swings a load from the high side to the low side, the load radius will
Increase
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Most crane manufacturers reduce load capacity for duty cycle operations because
Side loading forces may occur
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On who's recommendations should a preventative maintenance program be setup
Crane Manufacturer ANSI 5-2.3(a)
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What is the standard rope used on most cranes
Right regular lay
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The proper way to calibrate a boom angle indicator is
Using a level, raise the boom to horizontal and set the indicator at 0 degrees
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The red area of an instrument gauge means
A dangerous condition exists
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The best way to keep people from being injured from the counterweight of the crane is to
Fence or barricade the swing area of the crane OSHA and ANSI
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Only approved attachments or extra counterweights made by the manufacturer should be placed on the rear side of the crane because
They could cause a backwards stability problem
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What is the first thing an operator should do before going under a low pipe rack
Post a signal person to check clearance
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When working on outriggers, the only time they should be less than fully extended is when
There is a load chart for this operation
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When lifting loads from the water, the operator should be aware that
The load will increase when you pick the load from the water
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What is required on a hydraulic crane in order to lift a man basket
Boom Length Indicator
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When working on rubber, cranes are rated at what percentage of tipping
75%
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When using cable or nylon spreaders it is important to remember
The lower the spreader angle the greater the tension
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Backward stability of a crane is tested with
Basic boom at maximum angle with no load
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If not listed in the load / capacity charts for a hydraulic crane and you are in between boom lengths you should
Use the next longer length
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When a spinning load presents a danger, the operator should
Use a tagline ANSI 5-3.2.1.4(o)
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The jib capacity is 8 tons and the ball weighs 900 lbs, what is the heaviest load that can be lifted safely
15,100 lbs
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Parts of line means
The number of lines running trough the load block
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if a jib is erected but not going to be sed, it is treated as a deduction from the cranes
Gross capacity
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What is the maximum number of broken wires acceptable before replacement on a standing wire rope
2 OSHA, ANSI 5-2.4.3
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What are most jib capacities based on
Structural
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On the majority of conventional cranes the power is transferred to the torque converter by a
Master Clutch
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During disassembly of a long boom, the hog lines are connected at the maximum cantilever point and the boom is slightly lifted off the ground. Which pins are removed next
The bottom pins ahead of the cantilever point
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When using load/ capacity charts, what does the term A Jib angle to ground refer to
Main boom angle minus the jibs offset
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A truck crane, with outriggers extended and set, and the tires touching the ground, the operator should refer to what load chart
On rubber Chart
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A truck crane with outriggers properly set, is rated at what percentage of its tipping capacity
85% ANSI 5-1.1.1
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When testing a man basket how long must the test pick be maintained
5 Minutes OSHA 1926.550(g)(5)(vi)
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What is the minimum pitch diameter for a load hoisting sheaves
Not less than 18 times rope diameter ANSI 5-1.7.5 (b)
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What is the minimum pitch diameter for load block sheaves
Not less than 16 times rope diameter ANSI 5.1.7.5 (c)
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What is the minimum pitch diameter for boom hoisting sheaves
not less than 15 times rope diameter ANSI 5.1.7.5 (a)
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Seatbelts shall be required on what cranes
Cherry Pickers ANSI 5-1.8 (e_
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Power is transferred to the sing trough a
Pinion Gear
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LMI's shall be installed on cranes with a lifting capacity of
3 ton and above ANSI
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When lifting personnel the cranes hook must be the type that
Can be closed and locked (OSHA 1926 (g)(4)(iv)(B)
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When working over water with a man basket are the people inside required to wear a belt/ harness
No harness or belt required OSHA 1926 (g)(6)(vii)
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What is the maximum advisable wind speed for crane operation
30 mph
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When working near powerlines, where should caution stickers be installed
At operator station and on the outside of the crane ANSI 5-3.4.5.3(i)
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Cranes must be level within what percent of grade
1% OSHA
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A periodic inspection is
Monthly to annually OSHA 1910.180(d)(2)(ii)
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A frequent inspection is
Daily to monthly OSHA 1910.180(d)(2)(i)
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Jib backlash, how much
5 degrees OSHA 1926 (b)(1)
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Test loads shall not exceed what percent of the manufacturers load ratings
110% ANSI 5-2.2.2(1)
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cranes idle for more than 6 months must have had what inspections performed
Frequent and Periodic ANSI 5-2.1.4(b)
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Cranes idle for less than 6 months must have what type of inspection performed
Frequent ANSI 5-2.1.4(a)
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Cranes lifting personnel platforms must have an inspection performed every
Day OSHA
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Crane hooks must not be twisted in excess of
10 degrees OSHA 1910.180 (d)(3)(v)
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A crane hooks throat open must not exceed
15% of its origional size OSHA 1910.180(d)(3)(v)
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What is the Ajib offset
Jib angle to the boom
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