National Commission for the Certification of Crane Operators (NCCCO) Mobile Crane Practice Exam

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Where are the Standard Method hand signals found?

OSHA Subpart CC
OSHA 1926.550
ASME B30.R
They are determined by each manufacturer

The correct answer is: OSHA Subpart CC

The Standard Method hand signals are found in OSHA Subpart CC. OSHA (Occupational Safety and Health Administration) established standards for the safe operation of cranes to enhance safety practices in construction environments. Subpart CC specifically addresses cranes and derricks in construction, outlining requirements for signaling, among other safety protocols. This is essential for ensuring a uniformity of hand signals used across various operations, thereby promoting effective communication between operators and ground personnel, crucial for safe crane operations. The other references mentioned do not provide the standardized hand signals as comprehensively as OSHA Subpart CC does. While OSHA 1926.550 outlines general safety regulations, it is not as specific in detailing hand signals. ASME B30.R may cover certain aspects of rigging and signaling, but does not collate the standardized signals used in construction settings as mandated under OSHA. Manufacturer-specific signals may vary significantly and can lead to inconsistencies on job sites, which is why standardized hand signals are preferred for safety.