How often should periodic inspections of slings be conducted according to ASME B30.9?

Periodic inspections of slings, as stipulated by ASME B30.9, should be conducted every year. This frequency is established to ensure that slings remain in safe working condition and can effectively perform their intended functions without posing safety risks to personnel or equipment.

Annual inspections allow for a thorough review of the sling's condition, including checking for wear, damage, corrosion, and any other factors that could compromise its integrity. Regular inspections also provide an opportunity to assess if the sling is being used correctly and according to recommended guidelines, which is vital for maintaining safety in lifting operations. Ensuring that slings undergo these periodic checks is a critical part of compliance with safety standards and helps reduce the likelihood of accidents or failures.

The other options present varying frequencies that do not align with the ASME B30.9 standards, which emphasize the importance of annual inspections to maintain safety and equipment integrity.