LEL/UEL - Flash Points - etc

Flash Point of Class IA

Less than 73°F

Flash Point of Class IB

Less than 73°F

Flash Point of class IC

Greater than or equal to 73°F

Boiling point of class IA

Less than 100°F

Boiling point of class IB

greater than 100°F

Boiling point of Class IC

Less than 100°F

What is the flash point of combustible liquids

Less than or equal to 100°F

Class II Comb. Liquid flash point

Less than or equal to 100°F

Flash Point of Class IIIA comb. Liquid

Great than or equal too 140°F

Flash Point of Class IIIB comb. Liquid

Greater than 200°F

Small spill

<125 gal

Large spill

>125 gal

Ethanol LEL

3.3%

Ethanol UEL

19%

AMD O2 threshold

19.5%-23%

AMD O2 normal concentration

20.8%

AMD CO Threshold Low Alarm

35 ppm

AMD CO threshold High Alarm

100ppm

AMD H2S low alarm

10 ppm

AMD H2S high alarm

20 ppm

H2S LEL

4%

H2S UEL

44%

Flammable range of NATURAL GAS

5-15%

Ignition temp for NATURAL GAS

1200°F

Vapor density of NATURAL GASS

.55

Specific gravity of PROPANE

.504

1 gal of liquid PROPANE weight

4.23lb

PROPANE expansion ratio

270:1

PROPANE LEL

2.3%

PROPANE UEL

9.5%

PROPANE ignition temp

920-1120°F

PROPANE vapor density

1.56

LEL action level 0-10%

Investigate in PPE

LEL action level 10-25%

PPE + SCBA

LEL action level >25%

EVAC + utility control + ext vent

CO LEL

12.8%

CO UEL

74%

CO vapor density

.968

AMD calibration gas (LEL)

Pentane