Chain Sling Inspection

This is a common inquiry we have from customers in the field and online. Inspections are typically done from the angle of periodic inspection, or in order to abide by OSHA and MSHA standards. While chain slings are one of the most durable lifting tools in the field, there are a few guidelines to stick by and safety concerns to look out for. Let's first discuss requirements:

 

Every lifting chain sling is required to have a tag. Per OSHA 1910.184(e)(1)

 

"Sling identification. Alloy steel chain slings shall have permanently affixed durable identification stating size, grade, rated capacity, and reach."

 

Identification tags must contain the following:

 

- Name or trademark of manufacture (assembler is considered manufactured unless the tag is replaced, then the party replacing the tag becomes the manufacturer)

 

- Grade (80, 100, etc)
- Nominal chain size (9/32", 5/16", 3/8", 1/2", 5/8" 3/4", etc)
- Number of legs (1, 2, 3, 4)
- Rated loads for vertical hitch and bridal hitch and the angle upon which it is based (30, 45, 60, 90 degrees based on number of legs typically)
- Length (we typically measure grab point to grab point but have seen tags that measure chain length. Be certain to check)
- Individual sling identification (this would be a serial number assigned by the manufacturer. Some use dates and some are assigned otherwise)

 

 

When inspecting a chain sling, there are a few safety considerations to look out for. As always, it's much cheaper to purchase a new sling, or replace components, than to gamble with your safety and the safety of others. Here is what OSHA states regarding inspections per "1910.184(d):

"Inspections. Each day before being used, the sling and all fastenings and attachments shall be inspected for damage or defects by a competent person designated by the employer. Additional inspections shall be performed during sling use, where service conditions warrant. Damaged or defective slings shall be immediately removed from service."

So what is considered damage to a chain sling? Here is a list of what we look for during inspection:

- No tag / Incorrect tag / Illegible tag
- Cracks / Breaks
- Worn / Nicked / Gouged
- Stretched links / Stretched hardware
- Bent links / Bent hardware
- Heat damage
- Pitting / Corrosion
- Weld splatter
- Frozen Components
- Latch kit need repair / Need replacement
- Cotter pins being used for lifting (replace with roll pin style)

Any of the above can reduce the safety factor of the sling and make the working load limit no longer apply.

If you're uncomfortable inspection your own sling, Advantage Rigging offers sling inspections. Customers have shipped slings in from all over the country for visual and load test inspections. For pricing, follow this link:  http://www.advantagerigging.com/sling-inspection/

If you have any questions, feel free to call us M-F from 8-5 at 480-502-2225 or by email at  sales@advantagerigging.com