“Storage tank” means any tank, other container, or reservoir used for the storage of organic liquids, excluding tanks that are permanently affixed to mobile vehicles such as railroad tank cars, tanker trucks or ocean vessels.
“Sulfur hexafluoride” or “SF6” means a GHG consisting on the molecular level of a single sulfur atom and six fluorine atoms.
“Sulfur recovery unit” or “SRU” means a process unit that recovers elemental sulfur from gases that contain reduced sulfur compounds and other pollutants, usually by a vapor-phase catalytic reaction of sulfur dioxide and hydrogen sulfide.
“Supplemental firing” means an energy input to the cogeneration facility used only in the thermal process of a topping cycle plant, or in the electricity generating or manufacturing process of a bottoming cycle plant.
“Tactical support equipment” is as defined in title 17, California Code of Regulations, section 93116.2(a)(36).
“Thermal host” means the user of the steam or heat output of a cogeneration facility.
“Ton” means a short ton equal to 2000 pounds.
“Topping cycle plant” means a cogeneration facility in which the energy input to the facility is first used to produce useful power output, and at least some of the reject heat from the power production process is then used to provide useful thermal output.
“Total organic carbon” or “TOC” means a measure of the total organic carbon molecules present in a sample.
“Transferred CO2” means carbon dioxide that is not emitted directly at the facility but is sold and/or transferred out of the installation as a pure substance.
“Uncertainty” means the degree to which data or a data system is deemed to be indefinite or unreliable.
“Unspecified source of power” or “unspecified source” means electricity generation that cannot be matched to a particular generating facility. Unspecified sources of power may include power purchased from entities that own fleets of generating facilities such as independent power producers, retail providers, and federal power agencies and power purchased from electricity marketers, brokers, and markets.