ASME B30.4 pdf download Portal and Pedestal Cranes Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings Construction,installation, inspection,testing. mainte- nance.and operation of equipment manufactured and facilities constructed after the effantainuractured andVolume shall conform to the mandatory requirements of this Volume. (b) Existinag Installafions. Equipment manufacturedand facilities constructed prior to the effectivraatareafthis Volume of the B30 Standard shall...