1-9. 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