دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: formation gases that are produced during a drill stem test, which is the conventional method of testing formations. Although these gases typically are produced only in very small quantities and consist mainly of natural gas, they become an environmental concern when the gases fall into the extremely hazardous substance category under SARA and are produced in sufficient quantities so that they exceed the TPQ limit set for that substance. Typically, wells are not set up for production operations when the drill stem test is run;consequently, gas-containment equipment is not installed or operational during the running of the test and such gases must be released or flared.

abbr: extremely hazardous substance.

n: (EHS) 1. chemical determined by the EPA to be extremely hazardous to a community during an emergency spill or release as a result of its toxicity and physical or chemical properties. 2. (under SARA) a substance listed in appendixes A and B of 40 CPR 355.

n: Superfund Amendments and Reauthorization Act of 1986. A series of regulations promulgated by the EPA for general industry after the Bhopal disaster in India, where thousands died as a result of the release of a toxic cloud from an insecticide factory. SARA requires oil and gas operators to (1) appoint an emergency coordinator, (2) to submit a list or individual Material Safety Data Sheets for all hazardous chemicals present at a facility at or above 10,000 pounds or extremely hazardous substances at or above 500 pounds or the threshold planning quantity, (3) to submit an annual inventory of hazardous chemicals or extremely hazardous substances reported on die Material Safety Data Sheets, (4) to notify the State Emergency Response Commission (SERC) of the presence of an extremely hazardous substance at or above the threshold planning quantity, (5) to report releases of any hazardous or extremely hazardous chemical that leaves the boundaries of the facility at or above the reporting quantity to the SERC and the Local Planning Committee.

n pi: (TPQ) EPA minimum quantities of extremely hazardous substances under SARA that may not be exceeded without meeting reporting requirements. Under SARA (section 302),companies must notify and coordinate emergency plans with the SERC and the LEPC when a facility reaches or exceeds the EPA-stipulated TPQ for any EHS. For example, hydrofluoric acid is an EHS with a TPQ of 100 pounds. If a facility has 100 pounds or more of hydrofluoric acid, it must notify the SERC and the LEPC.

n: a federal form used by companies or individuals for submitting annual inventory data on hazardous chemicals or extremely hazardous substances. See SARA Title III.