دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a European term for a plumb bob that is attached to a metal dip tape and that is of sufficient weight to keep the tape taut and of such shape as to facilitate the penetration of any sludge that might be present on the datum plate of a tank. Also called outage bob.

n: a method of measuring the height of the liquid in a tank using a pointed gaugers bob and a graduated tape. In this method, the liquid height is measured from the bottom of the liquid to the top. Compare outage tape-andbob procedure.

n: see ullage.

n: a graduated plumb bob that is attached to a metal gauge tape and that is of sufficient weight to keep the tape taut.

n: a measure of the volume of liquid in a storage tank determined by measuring from a reference point at the top of the tank to the surface of the liquid in the tank and subtracting that measurement from the gauge height of the tank. Used when direct measurement of the liquid level is not possible. Also called ullage gauge.

n: a measure of the space between the top of the liquid in a tank and the reference point on the hatch. The liquid level in the tank is determined by subtracting the outage measurement from the gauging height of the tank.

n: a method of measuring the liquid level in a tank by measuring the space between the top of the liquid in a tank and the reference point on the hatch. The liquid level in the tank is determined by subtracting the outage measurement from the gauging height of the tank. Compare innage tape-and-bob procedure.

n: the amount by which a tank or a vessel is short of being full, especially on ships. Ullage in a tank is necessary to allow space for the expansion of the oil in the tank when the temperature increases. Also called outage.

n: see outage tape-and-bob procedure.