These requirements cover portable metal containers that have a nominal capacity of 6 gallons (23 L) or less and that are intended for the temporary outdoor storage and handling of petroleum based flammable and combustible liquids, such as gasoline, naphtha, and kerosene. Such containers are intended for handling and transporting these liquids between a source supply and the point of use. A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the acceptable level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard cannot be judged to comply with this standard. Where considered appropriate, revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.