دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: (NORM) radioactive materials that occur naturally and that are brought to the surface during drilling operations or that contaminate drilling fluids, pipe scale, soil, or equipment. Although the EPA regulates NORM only in fertiliser (as of June 1992),it is likely that the regulation of other NORM material will follow in the near future. Currently, only Louisiana has state NORM regulations, but many other states are in the process of initiating regulations or have expressed an interest in doing so.