Outage Ullage : The depth of the space in a tank not occupied by oil.
#ASTM TABLE 54B EXCEL FREE#
Non-liquid volume : the measurable amount of material that is not free flowing at the time of measurement. The onboard quantity is the remnant of the previous cargo or part load into the tank. Practice: Load on top is the act of commingling onboard quantity with cargo being loaded. Procedure: Load on top is the shipboard procedure of collecting the settling water and oil mixtures, resulting from ballasting and tank cleaning operations usually in a special slop tank or tanksand subsequently loading cargo on top of the slops and pumping the resultant mixture ashore at the discharge port. Load on Top LOT : defined as both a procedure and a practice. Innages are sometimes called soundings or body gauges. Innage : The amount of space within a tank that is occupied by oil. The inert gas used is usually nitrogen, carbon dioxide or a mixture of gases such as flue gas. Inert Gas IG : A gas used by marine tank vessels to displace air in cargo tanks to reduce oxygen content to 8 percent or less by volume and thus reduce possibility of fire or explosion. Free Water FW : The water present in a container that is not in suspension in the contained liquid oil. Floating Roof Correction : The correction made to offset the effect of the displacement of the floating roof, when no correction has been built into the tank capacity table. Dip : A term used to designate either the depth of liquid in a storage tank or the taking of the measurements of such liquid level. Its numerical expression varies with the units selected. This type of gauging is done extensively on vessels with inert gas systems.ĭensity : Density is the term meaning the mass of a unit of volume. Closed Gauging System : A method of obtaining measurements of the tank contents without opening the tank. Located, at the bottom of the pump room, these pumps are usually of the common duplex type, or turbine type of which the centrifugal is the most common. Steamships will use a heavy fuel oil, diesels use a range of fuels from heavy to light, and gas turbines generally use kerosene.Ĭargo Pump : Pump used on tankers for discharging cargo and loading or discharging ballast. The type will vary depending upon the propulsion mode of the vessel. Barrel : The standard unit of liquid volume in the petroleum industry. Grade and quality specifications for petroleum products are determined by ASTM test methods. Ambient Temperature : The temperature of the surrounding medium such as the atmosphere.