Certified Master Rigger and Signaler/Lift Director — CMRS/LD

The CMRS/LD program is for advanced riggers and signalers, and it focuses on the knowledge and skills necessary to maintain safe working environments during advanced rigging and signaling operations. The CMRS/LD designation indicates competence in the following areas: Developing and implementing Lift Plans, including evaluating aspects of critical hoisting operations and determining the correct equipment, materials, personnel, personnel placement, and diagram development Determining proper hitch configurations for asymmetrical hoisting operations Taking into account and correcting for the effect of the load on the equipment prior to hoisting operations Anticipating and compensating for variations in D/d ratios as affected by wire construction or hardware configurations Handling complications with the rigging plan during hoisting operations Being aware that stresses on slings and rigging hardware will change when transferring weight between hoisting devices Recognizing when equipment, materials, ground conditions, and weather pose potential hazards and explaining why certain safety precautions should be taken Performing basic calculations to determine the stresses caused by changing sling angles in hoisting asymmetrical loads