Rim seal

Rim seal means a device attached to the rim of a floating roof deck that spans the annular space between the deck and the wall of the storage vessel. When a floating roof has only one such device, it is a primary seal; when there are two seals (one mounted above the other), the lower seal is the primary seal and the upper seal is the secondary seal.

Source

40 CFR § 63.1061

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Scoping language

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

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