Which equipment is exempt from the test and inspection requirements outlined in NAVFAC P-307?

The correct choice regarding equipment exempt from the test and inspection requirements outlined in NAVFAC P-307 is OEM installed bolt-on pads. These pads are considered to be integral components of a crane and are usually manufactured and installed by the original equipment manufacturer. Being specifically designed for use with the equipment, they generally come with quality assurances and warranties that ensure their reliability and safety.

The exemption from testing and inspection arises from the understanding that these pads are part of the inherent design and manufacturing processes, which are strictly regulated. Since they are not considered to be separate or additional components that could vary in quality or installation practices, they do not necessitate the same level of independent verification as other types of equipment.

In contrast, the other types of equipment listed typically do require specific testing and inspection due to their potential to impact the safety and operational integrity of the crane or lifting system. For example, single point attachments and portable lifting devices are often subject to varying conditions of use and thus require consistent inspection to ensure they remain safe for operational use. Manually operated cranes also present unique operational risks that necessitate ongoing examination and maintenance checks to mitigate any potential hazards.