What is the purpose of Obiggs?
The OBIGGS is a simple equipment generating directly Nitrogen on board to fully protect the helicopter tanks against explosion, and improve crew members safety. Autonomous, it does not require any logistics.
What are the 3 types of fuel tank?
Aircraft typically use three types of fuel tanks: integral, rigid removable, and bladder.
- Integral tanks are areas inside the aircraft structure that have been sealed to allow fuel storage.
- Rigid removable tanks are installed in a compartment designed to accommodate the tank.
What is the purpose of venting the fuel tank?
Your tank has to breathe. In order to breathe, your tank must have a vent somewhere that will relieve both vacuum and pressure. Gasoline expands in volume as it warms up and shrinks in volume as it cools down. The fuel level of your tank changes throughout the day, even if you are not driving it.
Should I keep my diesel tank full?
You can minimize your water issue by keeping your tank full which minimizes the amount of condensation space in the tank, thus reducing the amount of water. All OEM manufacturers recommend that you demulsify water from diesel fuel so it can safely be removed and not damage your engine.
How long can diesel fuel store?
6 to 12 months
Diesel fuel can only be stored from 6 to 12 months on average — sometimes longer under the best conditions. Generally, to prolong the life of the quality of stored diesel fuel, it should be: Kept cool at around 70 degrees Fahrenheit; Treated with biocides and stabilizers.
What is an Obiggs system?
The OBIGGS is a system composed of well-proven equipment generating directly Nitrogen on board to fully protect the aircraft tanks against explosion. Autonomous, it does not require any logistics. OBIGGS for military cargo aircraft – brochure.
What is fuel tank inerting?
Collins Aerospace’s fuel tank inerting systems improve aircraft safety by reducing oxygen in the fuel tank to prevent combustion, even if a spark is present. As fuel is consumed during flight, the fuel level in the tank is lowered and the remaining oxygen in the ullage is replaced by non-flammable inert gas.
What are the two types of fuel tank?
Types of Fuel Tanks
- Metal Fuel Tank. A metal fuel tank is a fuel container welded from stamped sheets of steel or aluminum.
- Plastic High-Density Polyethylene. Plastic high-density polyethylene (HDPE) fuel tanks are used in most modern automobiles.
- Integral Fuel Tank.
- Bladder Tank.
What are the basic types of fuel tanks?
Fuel tank construction can be divided into three basic types: integral, rigid removable, and bladder. An integral fuel tank, shown in Fig.
What happens if a fuel tank is not vented?
If these polyethylene tanks do not have a tank vent and are, therefore, not vented properly, they too will collapse. This does not only happen in transfer tank scenarios. There are many applications in which actual bulk storage tanks have collapsed due to the creation of a vacuum in the plumbing system.
How do I know if my gas tank is vented?
All modern gas caps are vented is some form. Look at the bottom that faces the gas and you can see the valve inside. Old caps back in the day were not vented and where simply a twist lock solid cap. You could in theory use a non vented on a car because they actually have a filler neck.
What are the standards for a fuel tank?
Your specifications should require compliance to the UL-142 standards for fuel tank construction. Where a “Protected” tank is required, UL-2085 compliance should be specified. Cylindrical tank designs are most common.
How to access an above ground fuel tank?
For safe access to the top of the tank (for maintenance purposes), your specifications should require a ladder (or stairs), and a safe platform to stand. Vertical ladders should be provided with a safety cage and gate to restrict access.
Where does the fuel piping go in a vault?
The fuel piping below the DFE must be strapped to the vault or contained ina protective shaft on the landward or downstream side. The vent pipe fromthe tank must extend above the DFE. The vault tanks normally come with the manufacturer’s calculations of theconcrete volume required to counteract for buoyancy.
What happens to a fuel tank in a flood?
Both underground and above ground fuel storage tanks are vulnerable to damage by floodwaters, as illustrated by the following: ŁAn underground tank surrounded by floodwaters or saturated soil will be subjected to buoyancy forces that could push the tank upward.