Floating roof

Floating roof means a roof that floats on the surface of the liquid in a storage vessel. A floating roof substantially covers the stored liquid surface (but is not necessarily in contact with the entire surface), and is comprised of a deck, a rim seal, and miscellaneous deck fittings.

Source

40 CFR § 63.1061


Scoping language

All terms used in this subpart shall have the meaning given them in the Act and in this section.

Is this correct? or