(1) The following abbreviations shall, unless the context clearly indicated otherwise, have the following meaning:
- (a) ASTM = American Society for Testing and Materials
- (b) Btu = British thermal unit
- (c) C = degrees Centigrade
- (d) cal = calorie
- (e) CO = carbon monoxide
- (f) CO2 = carbon dioxide
- (g) dscf = dry cubic foot at standard conditions
- (h) dscm = dry cubic meter at standard conditions
- (i) F = degrees Fahrenheit
- (j) g = gram
- (k) gr = grain
- (l) H2S = hydrogen sulfide
- (m) H2SO4 = sulfuric acid
- (n) Hg = Mercury
- (o) hr = hour
- (p) kg = kilogram
- (q) lb = pound
- (r) mg = milligram
- (s) mm = millimeter
- (t) MW = megawatt
- (u) NO = nitric oxide
- (v) NO2 = nitrogen dioxide
- (w) NOx = nitrogen oxides
- (x) ppb = parts per billion
- (y) ppm = parts per million
- (z) psia = pounds per square inch absolute
- (aa) sec = second
- (bb) SO2 = sulfur dioxide
- (cc) ug = microgram
Authority: T.C.A. §§ 4-5-201, et seq. and 68-201-105. Administrative History: Original rule filed January 10, 1977; effective date February 9, 1977.