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Safety Category 3 Non-Cab Operated
Crane Safety
What may cause the bridge to skew - correct answer ✅Wheel slippage on one side only because of a slippery track, or a heavy load suspended from one end of the bridge. What is two-blocking and why is two-blocking dangerous? - correct answer ✅Two-blocking occurs when the hook block comes into contact with the upper sheave block during hoisting of the hook. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load. What is the formula for determining the area of a triangular shaped object? - correct answer ✅Base x Height divided by 2 When is it permissible for an operator to leave the controls of a crane while a load is suspended from the hook? - correct answer ✅The operator shall remain at the controls at all times while a load is suspended from the hook.
Safety Category 3 Non-Cab Operated
Crane Safety
Regardless of the method of communication used, all crane signals must be - correct answer ✅Clear What is the weight of a 24 square foot, 2 inch thick aluminum plate with a unit weight of 15 lbs. per square foot of material per inch of thickness? - correct answer ✅720lbs Synthetic web slings should NOT be used in areas where temperatures exceed 194 degrees Fahrenheit. - correct answer ✅True Which of the following identifies the two categories of crane lifts? - correct answer ✅Complex and Non-Complex What is inching? - correct answer ✅Performing a motion very slowly, a little at a time
Safety Category 3 Non-Cab Operated
Crane Safety
activated are - correct answer ✅Operational safety devices When crane accidents happen, you must do all of the following except? - correct answer ✅Continue to operate the crane until all lifts are completed Components that provide protection for operation and maintenance personnel working on or in the path of cranes. - correct answer ✅General Safety Devices What signal may an operator obey from a person other than the designated signal giver? - correct answer ✅Stop or Emergency Stop Components that support the load and upon failure would cause dropping or uncontrolled lowering of the load are - correct answer ✅Load bearing parts
Safety Category 3 Non-Cab Operated
Crane Safety
What is meant by skewing? - correct answer ✅Skewing is where one end of the bridge gets ahead of the other end frequently causing binding on the rails. The expiration date that is of particular importance to crane operators is? - correct answer ✅The certification expiration date of the crane If an object has a volume of 200 cubic feet and the unit weight is 150 lbs. per cubic foot, what is its weight? - correct answer ✅30,000 lbs. What should an operator do if he/she is not sure of the meaning of a signal? - correct answer ✅Stop operation until the meaning of the signal is understood. Taking the slack out of rigging and starting to move a load or empty hook should be performed in first
Safety Category 3 Non-Cab Operated
Crane Safety
How should an operator check the hoist brakes when lifting a load? - correct answer ✅Lift the load a few inches off the ground and stop hoisting to ensure there is no slippage of the brakes. Select the proper method of landing a load. - correct answer ✅Lower the load slowly, stop a few inches from the landing point, then slowly lower the rest of the way. New shackles put into the weight handling equipment program are required to have all of the following markings on or attached to the shackles except? - correct answer ✅Date of manufacture The crane operator must check the certification information on the crane for ________________ before operating the crane. - correct answer ✅Certification expiration date, crane ID, and certified capacity
Safety Category 3 Non-Cab Operated
Crane Safety
Who can remove a danger, caution, or lockout tag? - correct answer ✅The person who attached the tag or his or her supervisor when he or she is not available What is the operator's main concern during crane operations? - correct answer ✅Operating safely At what point during a lift may trolley or bridge travel be started? - correct answer ✅When the tracks are clear and the load is high enough off the ground to pass over obstacles safely Which of the following is considered to be the best way the operator can ensure the crane is safe to operate on any given day? - correct answer ✅Perform daily pre-use checks When making two-hook lifts, the capacity of ____________ must not be exceeded at any time - correct answer ✅either hook
Safety Category 3 Non-Cab Operated
Crane Safety
The crane operator stops the crane whenever ___________ is in question. - correct answer ✅Safety Bridge cranes with rated capacities of less than 20,000 lbs. are classified as ___________ cranes. - correct answer ✅Category 3 More than one signal person may provide signals to a crane operator at a time. - correct answer ✅False Which of the following formulas would be used to find the volume of a rectangular or square shaped 3 dimensional object? - correct answer ✅length x width x height Shackles, wire rope slings, and/or eyebolts, may be used to their full capacity when used within ______ of vertical. - correct answer ✅5 degrees
Safety Category 3 Non-Cab Operated
Crane Safety
A crane accident occurs when any element of the crane operating envelope fails to perform correctly during crane operations, maintenance, or testing which could result in any of the following except? - correct answer ✅Equipment malfunction The crane operator is responsible for the pre-use ___________ of the crane. - correct answer ✅Check Common modes of operation for typical OET bridge cranes are? - correct answer ✅Hoist, trolley, and bridge Sling angles affect the actual stress on each leg of the sling. Lowering the angle measured from the horizontal will? - correct answer ✅Increase the stress on each leg When are operators required to perform a pre-use check of the crane? - correct answer ✅Prior to the first use of the crane each day
Safety Category 3 Non-Cab Operated
Crane Safety
While performing a monthly ODCL on a crane, you find minor deficiencies. What do you do? - correct answer ✅Note the deficiencies on the ODCL The majority of crane accidents are attributed to which of the following? - correct answer ✅Personnel error What is plugging? - correct answer ✅The use of reverse power instead of a brake to slow or stop the bridge or trolley travel When should a tagline be used during lifting operations? - correct answer ✅To prevent the load from swinging or rotating If the crane operator and the rigger-in-charge disagree on whether or not a load is safe to lift, the operator should? - correct answer ✅Not operate the crane until contacting the supervisor to resolve the issue
Safety Category 3 Non-Cab Operated
Crane Safety
If an object is 6 feet long, 4 feet wide, and 2 inches thick, what is the area of the object? - correct answer ✅24 square feet Who is primarily responsible for evaluating a Crane Operator's physical and emotional fitness? - correct answer ✅The crane operator A monorail hoist with less than 20,000 lbs. capacity is a __________ crane. - correct answer ✅Category 3 What are the principal parts of an overhead traveling crane? - correct answer ✅Bridge girders, end trucks, trolley, and operator's cab or pendant control What is the crane communications hand signal pictured with the arm extended, palm down, and the arm moving back and forth horizontally? - correct answer ✅Stop
