What must accompany a durable identification tag on an alloy steel chain sling?

The correct answer is that the durable identification tag on an alloy steel chain sling must include the size, grade, rated capacity, and manufacturer. This information is crucial for several reasons.

Firstly, size and grade are essential for understanding the sling's strength and suitability for specific lifting tasks. They inform users about the maximum weight the sling can safely handle and its construction quality, which directly impacts safety during lifting operations. When engaging in any lifting activity, it is vital for workers to know the capabilities of the equipment they are using to prevent overload situations that could lead to equipment failure or accidents.

Secondly, the rated capacity is necessary to ensure that the sling is not used beyond its designed limits, which is a critical factor in maintaining safe lifting practices. Using a sling with an inadequate rated capacity for a particular load poses serious safety risks.

Lastly, including the manufacturer's information ensures accountability and traceability to the original source. This can be important for maintenance, inspections, and if any issues arise with the sling.

While the other choices present relevant information regarding safety and operational guidelines, they do not fulfill the specific requirement tied to the identification tag on an alloy steel chain sling mandated by safety standards.