What OSHA requires
On construction crane work, OSHA requires a qualified rigger to do the rigging whenever workers are in the fall zone while loads are hooked, unhooked or guided (29 CFR 1926.1425), and for rigging during crane assembly and disassembly. When a signalperson is used, they must be qualified by a third-party qualified evaluator or by the employer's qualified evaluator (29 CFR 1926.1428).
What signalperson qualification covers
- Knowing and using the standard hand signals, and voice signals where used
- Basic understanding of crane operation and limitations, including boom deflection
- Knowing the relevant OSHA signaling requirements
- Showing these skills in a practical test
What rigging training covers
- Estimating load weight and finding the center of gravity
- Choosing and inspecting slings, shackles, hooks and hardware
- Hitch types and how sling angle changes the load on the rigging
- Tag lines, load control and safe positioning
- Rejection criteria for damaged rigging
Certification options
NCCCO offers Rigger Level I, Rigger Level II and Signalperson certifications, each with written and practical exams. Many Houston-area plants and contractors require these for anyone rigging or signaling on their sites.