How do I check my 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 is ullage shipping?
Ullage or headspace is the unfilled space in a container, particularly with a liquid.
What is the purpose of taking ullage?
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. Keeping the fuel storage tank full at all times keeps the ullage at the top of the tank to a minimum.
What is UTI in ship?
UTI meters are portable liquid level gauges used to measure the amount of hydrocarbons and chemicals in a ship’s tank. UTI devices are used to measure the temperature and oil-water interface on tanker vessels using a sensor probe attached to a measurement tape.
What is tank ullage?
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 does tank ullage mean?
What is definition of ullage?
Definition of ullage : the amount that a container (such as a tank or cask) lacks of being full.
How did sailors take soundings?
Soundings may also be taken to establish the ship’s position as an aid in navigation, not merely for safety. Soundings of this type were usually taken using leads that had a wad of tallow in a concavity at the bottom of the plummet.
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.
What is Innage in ship?
noun. the quantity of goods remaining in a container when received after shipment.
What is MMC UTI?
MMC UTI (Trimode Portable Gauging) Article number: IC-01-00100. Description. MMC is the world’s leading manufacturer of portable instruments for measuring ullage, oil-water interface, temperature, and bottom dryness in shipboard and land-based petroleum and chemical tank systems.
What is detector ship?
An interface detector is an electrical instrument for detecting the boundary between oil and water in tanks. However, the equipment is not limited to oil/water application but can be used wherever an accurate interface control between two liquids is necessary.
What is WCF and VCF?
In this case, we need to get the volume correction factor (VCF) to convert the volume at the observed temperature to the standard volume which is volume at 15 Deg C or Volume at 60 F respectively. We then need to apply the weight correction factor (WCF) to convert the standard volume to weight.
What does 90% ullage mean?
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 in oil and gas?
ullage in the Oil and Gas Industry 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.