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1971 – OSHA passes 29 CFR 1926.550, which is the standard for cranes and derricks used in construction for the next 41 years. [3] 1995 – The National Commission for the Certification of Crane Operators (NCCCO) is established by the crane and lifting industry as a nonprofit organization to develop a certification program for crane operators.
Cranes (machines) (8 C, 28 P) ... The following 27 pages are in this category, out of 27 total. This list may not reflect recent changes. ...
An employee should be assigned to inspect equipment to insure proper safety. Equipment should have lights and reflectors if intended for night use. The glass in the cab of the equipment must be safety glass in some countries. [74] [75] The equipment must be used for its intended task at all times on the job site to insure workers' safety.
Many firms keep their costing structure closely guarded [citation needed] as it can impact the bidding strategies of their competition. In a company with multiple semi-independent divisions, the equipment department often wants to classify all repairs as "minor" and charge the work to a job – therefore improving their 'profit' from the equipment.
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First, the crane must be able to lift the weight of the load; second, the crane must not topple; third, the crane must not fail structurally. Examples of Mechanical principles A tower crane can "swing" its boom left and right, "dolly" its car (or traveler) in and out, and lift and lower its load
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [1] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
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