This blog provides comprehensive collection of structural inspection guidelines for overhead crane and trolley-hoist. The objective of the blog to find the structural damage inorder to identify hot spots and fatigue prone areas, basic concepts are implied on the structure. This guide will be helpfull for staff who are liable for daily visual inspection of crane operations such as a crane operation technician. But also helpful to engineers who are in the field of level 1 inspection.
Implementing a thorough and structured inspection schedule will have following advantages
A decreased risk of death or injury to workers
Increased vulnerability to responsibility
Improves the efficiency of machinery
Extends the service life of equipment
Ensure compliance with regulations, guidlines and requirements including OSHA, ANSI and ASME.
Begin the top inspection and work down your way. It ensures that the trolley ends at the top. And proceed to the bridge's top. Inspect as much as possible without aerial lift. Remember places not available from the aerial lift for later viewing.
Where to Look
Since there are so many differences in layout of model crane installations, all points of concern in this guide can not be defined. A fundamental understanding of the actions of the system may help identify certain inspection points. The manual includes a section on specific design actions to help technicians find unlisted points of interest. To fit any crane in your factory, a personalized list of inspection points should be produced.
Overhead Cranes Safety and inspection requirements
Daily Operator Inspection Requirements
Tagged Crane or Hoist
Tagged Crane or Hoist
Verify that an out - of-order sign control sign is not attached to the crane or hoist.
Test that all movements are in line with machine command markings
Verify that all movements do not have unnecessary drift and that stopping drift is natural (approx. 10% in high-speed travel).
No drift permitted.
Check damage, cracks, nicks, gouges, throat deformity of the opening of the throat, wear on the saddle or load point, and twist. Refer to the manual provided by the crane or hoist's original manufacturer.
Test the hook lock is not lacking if supported and that it works properly
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