46 C.F.R. § 153.462 Static discharges from inert gas systems.
Title 46 - Shipping
An inert gas system on a tank that carries a flammable or combustible cargo must not create static arcing as the inert gas is injected into the tank.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Special Requirements for Flammable or Combustible Cargoes
§ 153.462 Static discharges from inert gas systems.