§98.208. Definitions.
40 C.F.R. § 98.208
All terms used in this subpart have the same meaning given in the Clean Air Act and subpart A of this part. Additionally, some sector-specific definitions are provided below:
Carrier gas means the gas with which cover gas is mixed to transport and dilute the cover gas thus maximizing its efficient use. Carrier gases typically include CO2, N2, and/or dry air.
Cover gas means SF6, HFC-134a, fluorinated ketone (FK 5-1-12) or other gas used to protect the surface of molten magnesium from rapid oxidation and burning in the presence of air. The molten magnesium may be the surface of a casting or ingot production operation or the surface of a crucible of molten magnesium that feeds a casting operation.
Notes, amendments, and revision history
Source
Source: 75 FR 39761, July 12, 2010, unless otherwise noted.
Authority
Authority: 42 U.S.C. 7401-7671q.
Source
Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.