This is the fifth in a series of Fact Sheets developed by the Crane, Hoist and Monorail Alliance concerningapplications and operation of overhead material handling equipment. Depending on the individual application, the following crane components could improve the crane operation in terms of safety,reliability and maintenance. Please refer to OSHA Standard 29 CFR 1910.179,ANSl B30 specifications,and state and local codes for requirements.
1) Horns
Audible warning devices - recommended for congested areas where the standard strobe lightmay not be visible to all personnel. This can provide an additional warning to employees whilemoving loads.These are required by OSHA (29 CFR 1910.179) for cranes equipped with radiocontrols or cab controlled cranes.
2) Warning lights
Visible lights warn personnel of moving loads..These are required by OSHA (29 CFR1910.179) for cab controlled cranes.
3) crane lights
Provides floor lighting underneath overhead cranes for greater visibility.They are typically foundon large cranes that block out ceiling lights.
4)collision avoidance
Protects the cranes by not allowing the cranes collide with one another, with the end-stops orother obstructions.
Provides means of keeping cranes separate to avoid overloading the runway.
5) Walkways
Provides maintenance personnel with a place to work on the components.Provides access to components if a lift is not available.
Designed with kick plates to avoid items from falling over the edge onto personnel workingbelow.
6) slow down & stop limits
Prevents the crane from running into end-stops at full speed.
Useful to help make operators aware of where they are on the runway, approaching a stopping point or an obstacle.
7) overloads with read-outs
lnforms the operator of the actual load being lifted.
Provides a base point for maintenance to start trouble shooting.
8) Variable speed for smooth acceleration and deceleration
Reduces mechanical wear on components.
Removes impact loads on all drive trains.May extend the life of the equipment.
Prevents load from swinging excessively from a hard start or jerky stop.
9) Brake slip detections
lnforms maintenance personnel when brake adjustment is needed.
10) Radio control
Allows operator to stand away from the load.(This is especially important if the operator could be pinched or trapped between the load and an obstacle.)
11) Working period monitoring
Monitors the remaining time between recommended maintenance overhaul of the hoist.Provides a predictable preventative maintenance schedule which could reduce downtime.Can improve the safe use of the equipment by indicating when the useful life of the equipmenthas been reached and an overhaul is due.
Through the OSHA and Crane, Hoist and Monorail Aliance, the Alliance participants developed this Fact Sheet forinformational purposes only. lt does not necessarily reflect the official views of OSHA or the U.S. Department oflabor. 4/2012
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