Codes, standards, and regulations: Go to the www.osha.gov web site and look up the OSHA regulation CFR 1910.119: Process Safety Management of Highly Hazardous Chemicals. Use Appendix A to determine the threshold quantities for the following chemicals. If your plant site exceeds this threshold quantity, then this standard applies.

a. Ammonia, anhydrous

b. Chlorine

c. Hydrogen fluoride

d. Propylene oxide

Appendix A

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Volume Equivalents in 1 1728 231 61.03 6.102 104 35.31 Mass Equivalents avoirdupois oz. 1 16 2.286 10-3 3.527 x 10-2 35.27 Linear Measure mn 1 2.54 x 10-2 0.3048 1609 1 Power Equivalents HP 1 1.341 1.818 10-3 1.415 1.341 x 10-3 2.655 X 1 10 ft U.S. gal 5.787 x 104 4.329 10-3 1 7.481 0.1337 1 3.531 x 10-2 0.2642 264.2 3.086 0.7376 Heat, Energy, or Work Equivalents ft-lbf kW hr mm Hg 1 1.98 X 0.7455 10 778.16 25.40 2.930 10-4 1.162 10-6 HP hr 3.766 X 5.0505 10-7 10-7 1.341 in Hg 3.937 10- 1 lbm 6.25 x 10-2 1 750.06 29.53 760.0 29.92 7.502 0.2954 1.429 x 10-4 2.20 10-3 2.20 51.71 2.036 in 39.37 1 12 6.336 x 104 kW 0.7457 1 1.356 x 10-3 1.055 1.000 10-3 X Miscellaneous X 2.773 X 3.725 10-7 10-7 1 X 3.930 10-4 1.558 10-6 bar 1.333 10-3 0.03387 1 1.013 0.01000 6.893 10-2 X grains 437.5 7000 1 15.432 15,432 X Acceleration Due to Gravity, g 32.174 ft/s = 9.80665 m/s ft 3.2808 ft-lb/s 550 737.56 1 778.16 0.7376 8.333 x 10-2 1 5280 2545 X 1 X 3.97 10-3 Btu 1.285 X 10-3 3412.8 9.484 10-4 Ideal Gas Constant, R 1.9872 cal/mole K 1.9872 BTU/lb-mole R 8.3143 J/mol K = 0.0083143 kJ/mol K atm X 1.316 10-3 3.342 10- 0.9869 1 9.872 10-3 X 6.805 10-2 L 1.639 x 10-2 28.32 3.785 1 1000 g 28.35 453.592 6.48 x 10-2 1 1000 X Avogadro's number = 6.02214 x 1023 /mol 1 U.S. gal = 0.8327 Imperial gal cal Btu/s 0.7068 0.9478 1.285 x 10-3 1 9.478 x 10-4 0.3241 x 1 8.6057 X 105 6.4162 105 252 0.2390 X mi 6.214 x 10-4 1.58 x 10-5 1.8939 x 10-4 1 kPa 0.133 3 X 3.387 X 1 0.082057 L atm/mol K = 0.082057 m atm/kg-mole K 21.9 (in Hg) ft/lb-mole R 0.7302 ft atm/lb-mole R 1545.3 ft lb/1b-mole R m 1.639 10-5 2.832 x 10-2 3.785 x 10-3 1.000 10-3 1 kg 2.835 x 10-2 0.453592 6.48 x 10-5 0.001 1 32.174 ft-lb/lbs 1 kg m/s N = 1 kg/Pa m s = 1 J s/kg m =10 kg/bar m s 1 g cm/s dyne J 1.356 X 2.6845 X 106 1055 3.6 x 106 X 6.893 1 1 10.731 psia ft/1b-mole R 8.3143 kPa m/kg-mole K 8.3143 10-2 bar m/kg-mole K = 8.3143 105 bar m/mol K 82.057 cm atm/mol K = 8.2057 105 m atm/mol K J/s 745.7 1000 1.356 1055 1 4.184 psia 100.0 14.504 101.3 14.696 0.1450 8.314 x 10 kg m/kg-mole s K = 8.314 x 10 N m/kg-mole s K 8.314 N m/mol K 1.934 10- 0.4912 1 N = 1 kg m/s 1 J = 1 Nm = 1 kg m/s 1 Poise = 100 centipoise (cp) = 0.1 kg/m s = 0.1 Pa s = 0.1 N s/m 1 centipoise (cp) = 1 x 103 kg/m s = 2.4191 lb/ft hr = 6.7197 10-4 lbm/ft s 1 atm = 760 mm Hg = 101,325 Pa = 1.013 bar = 29.92 in Hg = 33.91 ft of water = 10.33 m of water