Chemistry reactivity hazards screening

Experience has shown that reactive chemistry hazards are sometimes undetected during bench scale and pilot plant development of new products and processes. Reactive chemistry hazards must be identified so they can be addressed in the inherent safety review process. Chemists should be encouraged and trained to explore reactive chemistry of "off-normal operations. Simple reactive chemicals screening tools, such as the interactions matrix described in Section 4.2, can be used by R D chemists. 

In a Downstream Decomposing facility not the subject of this example, intentional chemistry is performed as ammonium dichromate is heated to decomposition to make chromium dioxide, which is used in the production of magnetic tape products. In the Upstream Feeds facility under study, physical processing is performed as ammonium dichromate is fed through a screw conveyor. The Preliminary Screening Method is to be used as a first-cut determination whether chemical reactivity hazards will need to be managed in the physical processing facility. 

Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of POx NFPA Health 0, Flammability 1, Reactivity 1 Uses Red Mfg. of phosphoric acid additive to semiconductors fertilizers safety matches pyrotechnics tracer bullets antioxidant and color suppressant for powd. coatings flame retardants electroluminescent coatings Wh. Dietary nutrient fertilizers rodenticides smoke screens incendiaries mfg. analytical chemistry gas analysis tracer bullets rat poison... 

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