72.3 Measurements, abbreviations, and acronyms.§ 72.3 Measurements, abbreviations, and acronyms.
Measurements, abbreviations, and acronyms used in this part are defined as follows:acfh - actual cubic feet per hour. atm - atmosphere. bbl - barrel. Btu - British thermal unit. °C - degree Celsius (centigrade). CEMS - continuous emission monitoring system. cfm - cubic feet per minute. cm - centimeter. dcf - dry cubic feet. DOE - Department of Energy. dscf - dry cubic feet at standard conditions. dscfh - dry cubic feet per hour at standard conditions. EIA - Energy Information Administration. eq - equivalent. °F - degree Fahrenheit. fps - feet per second. gal - gallon. hr - hour. in - inch. °K - degree Kelvin. kacfm - thousands of cubic feet per minute at actual conditions. kscfh - thousands of cubic feet per hour at standard conditions. Kwh - kilowatt hour. lb - pounds. m - meter. mmBtu - million Btu. min - minute. mol. wt. - molecular weight. MWe - megawatt electrical. MWge - gross megawatt electrical. NIST - National Institute of Standards and Technology. ppm - parts per million. psi - pounds per square inch. °R - degree Rankine. RATA - relative accuracy test audit. scf - cubic feet at standard conditions. scfh - cubic feet per hour at standard conditions. sec - second. std - at standard conditions. CO2 - carbon dioxide. NOX - nitrogen oxides. O2 - oxygen. THC - total hydrocarbon content. SO2 - sulfur dioxide. [58 FR 3650, Jan. 11, 1993, as amended at 64 FR 28588, May 26, 1999]