A crane rigger is a specialized professional responsible for securing loads to cranes, ensuring every lift is executed safely and in strict compliance with OSHA 1926 Subpart CC (crane operations), OSHA 1926.251 (rigging equipment), and ASME B30 standards. Before lifting begins, a qualified rigger (often NCCER or NCCCO credentialed) meticulously inspects all hardware—including wire rope slings, shackles, and hoist rings—to verify they meet required working load limits (WLL). They calculate exact load weights and determine the center of gravity to select the optimal sling configuration and hitch type.
Once properly attached to designated lift points, the rigger assumes control on the ground. They communicate with the crane operator using standardized ASME hand signals or two-way radios to guide the load precisely, utilizing tag lines to prevent dangerous rotation during transit.
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