Gas-freeing definition
Gas-freeing means the process where a portable or fixed ventilation system is used to introduce fresh air into a tank in order to reduce the concentration of hazardous gases or vapours to a level safe for tank entry.
Gas-freeing means the introduction of fresh air into a tank, compartment or container for the purpose of lowering the level of flammable, toxic or inert gases (usually vapours originating in the cargo of oil tankers and chemical carriers) to that required for a specific purpose.