97.103—Measurements, abbreviations, and acronyms.

Measurements, abbreviations, and acronyms used in this subpart and subparts BB through II are defined as follows:
Btu—British thermal unit

Code of Federal Regulations

CO2—carbon dioxide

Code of Federal Regulations

H2O—water
Hg—mercury
hr—hour
kW—kilowatt electrical
kWh—kilowatt hour
lb—pound
mmBtu—million Btu
MWe—megawatt electrical
MWh—megawatt hour

Code of Federal Regulations

NOX—nitrogen oxides

Code of Federal Regulations

O2—oxygen
ppm—parts per million
scfh—standard cubic feet per hour

Code of Federal Regulations

SO2—sulfur dioxide
yr—year