Aerial Lifts and Manufacturer Requirements questions for the CHST

Question 1

During crane disassembly, a rigger plans to choke a synthetic sling around a steel component with a sharp, unprotected corner. The sling's rated capacity is well above the component's weight. What does the standard require regarding the sling?

1. AThe sling must be protected from abrasive, sharp or acute edges and from configurations such as distortion or localized compression that reduce its rated capacity
2. BNothing further, because the load is below the sling's rated capacity
3. CThe sling must be replaced with a wire rope sling regardless of the edge condition
4. DThe sling may be used unprotected if the lift is made slowly

Question 2

A rigging supervisor is selecting synthetic slings for crane assembly. The site's general rigging practice sheet allows a higher temperature exposure than the sling manufacturer's literature does. Which source must be followed for the synthetic sling's use?

1. AThe crane operator's judgment of conditions at the time of the lift
2. BWhichever source allows the higher limit, provided the rigger is qualified
3. CThe employer's general practice sheet, since it is site-specific
4. DThe synthetic sling manufacturer's instructions, limitations, specifications and recommendations

Question 3

During crane disassembly, a qualified rigger plans to choke a synthetic round sling around a boom section that has sharp, unpadded steel corners. The boom section weighs well under the sling's rated capacity. What must the employer ensure before the lift?

1. AThe sling is used as planned, since having a qualified rigger do the work removes the need for edge protection
2. BNothing further is needed, because the load is below the sling's rated capacity
3. CThe sling is used as planned, as long as it is inspected visually after the lift is complete
4. DThe sling is protected from the sharp edges, for example with edge protection, before the lift proceeds