What is Innage and ullage?
Alternate Ullage Gauge – The ullage obtained by subtracting the measured height of the liquid in the tank from the official reference height of the tank. Innage Gauge (Dip, Sounding) – The height of the liquid surface from the bottom of the tank (or datum plate).
What do you mean by ullage?
: the amount that a container (such as a tank or cask) lacks of being full.
What is ullage method?
Ullage is the void space in the tank measured from the top of the tank to the upper surface of the fluid. Ullage is measured when the content of a tank is highly viscous and if the tank is filled to the maximum.
What is ullage issue?
Ullage is the volume which is left empty in a tank so that there is space for the liquid in the tank to expand. The air space between the oil surface and the top of the tank is known as ullage.
What is ullage space?
Ullage or headspace is the unfilled space in a container, particularly with a liquid.
What is 90% ullage?
Ninety percent ullage is the ullage minus 10% of the tank capacity. The 90% ullage volume is the amount of fuel that should fit in the tank without triggering the overfill prevention device. The 90% ullage number can be used to determine the amount of fuel to order.
What is ullage value?
It also means a net positive for the shipping industry. Webster’s defines ullage as “the amount that a container (as a tank or cask) lacks of being full.” In practical use, it can refer to the amount of empty space in a cargo ship’s hull or in an oil terminal tank; think of the top of a wine bottle.
How do you measure ullage?
When measuring level by ullage method, the sounding tape is inserted only till the bob/ tape touches some part of the fluid top surface. Instead of measuring the whole depth of the tank, only the free space (from the top of sounding pipe to liquid surface) is measured (Check Figure).
What are the two types of sounding?
Audible and Inaudible Sounds Our ears are sensitive only to a certain range of frequencies, 20 Hz to 20,000 Hz. We cannot hear sound waves of frequency below 20 Hz and above 20,000 Hz.
How do you take ullage?
What is TC volume?
Temperature Compensated Volume is also called TC Volume. Due to seasonal temperature changes, the product in a tank will expand and contract. For example, colder temperatures cause product to contract, while increasingly warmer temperatures cause incremental increases in product expansion.
What does ullage mean in business?
Ullage definition The amount of liquid within a container that is lost, as by leakage, during shipment or storage.