دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adj: involving or exposing one to risk. The lists of material or waste that are considered hazardous vary from agency to agency and from regulation to regulation: hazardous materials in transport are regulated by DOT;hazardous substances in the workplace are regulated by OSHA;hazardous waste is regulated under EPAs RCRA;toxic substances are regulated under EPAs TSCA;hazardous air pollutants are regulated under EPAs CAA;and so on. The hazardous list for that regulation is tailored to that purpose.

n: 1. Under TSCA, anyone who manufactures or imports for commercial purposes over 10,000 pounds per year of a substance listed on the TSCA inventory. 2.under HAZCOM, production and drilling companies are considered manufacturers of crude oil, natural gas, and other products and must maintain an MSDS for these products.

n pi: certain substances under TSCA that present an unreasonable risk of injury to health or to the environment," for example, asbestos and PCB.

n: (TSCA) a congressional act that regulates the manufacture, processing, distribution in commerce, use, and disposal of chemical substances.

abbr: Toxic Substance Control Act. TSCA inventory n: a chemical inventory set up under the EPA that is a listing of chemicals that are, or once were, used in commerce. New chemicals that are not on the inventory are reviewed as produced. Operators and employers may not use any chemical that has not been listed on the inventory;however, it is important to note that some substances are excluded from the inventory because they are regulated by other laws or agencies.