Code of Federal Regulations Title 40. Protection of Environment § 40.72.3 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.

NO_X—nitrogen oxides.

O₂—oxygen.

THC—total hydrocarbon content.

SO₂—sulfur dioxide.