|(a) Electrical grounding and bonding shall be provided as recommended by NFPA 77, Static Electricity, Sections 5.4 and 6.1.3, and as required by the NEC. (b) Static protection is not required when container vehicles are loaded or unloaded by conductive or nonconductive hose, flexible metallic tubing, or pipe connections through or from tight top or bottom outlets where both halves of metallic couplings are in contact. (c) If stray currents may be present or if impressed currents are used on loading and unloading systems such as for cathodic protection, protective measures to prevent ignition shall be taken in accordance with API RP 2003, Protection Against Ignitions Arising Out of Static, Lightning and Stray Currents. (d) Grounding shall be provided for tanks supported on nonconductive foundations. Metal storage containers and tanks do not require lightning protection.