Scrap standard for structures of Overhead Crane

Scrap standard for structures of Overhead Crane

What is the retirement standard for structures of Overhead Crane?

1 main force components, such as the main beam, end beams and other loss of overall stability should be scrapped;

2 when the main force components of serious corrosion, it should be checked and measured, when the carrying capacity reduced to less than 87% of the original design capacity, if not repaired should be scrapped;

3 When the main force components of the crack, should take to prevent the crack to continue to expand and change the stress measures, or stop using, if not repaired should be scrapped;

4 when the main force component section corrosion of the original thickness of 10%, if not repaired should be scrapped;

5 main force components due to plastic deformation, so that the working body can not work safely, if not repaired, should be scrapped;

6 For the overhead crane, the trolley in the middle of the lifting load rated load, the main beam across the sub-under the line in the horizontal line over the span of L / 700, if not repaired, should be scrapped.