- 1 Why fuel oil tanks are not inerted?
- 2 Why cargo tank should be inerted during loading and discharging of crude oil?
- 3 Why is an inert gas required on an oil tanker?
- 4 Which is heavier inert gas or air?
- 5 Why CO2 is not used in inert gas?
- 6 What is the difference between inerting and purging?
- 7 What should be the first consideration when discharging an oil cargo?
- 8 What is the first consideration when discharging an oil cargo?
- 9 What is the importance of stripping of liquid cargo?
- 10 When discharging a tanker How can list be controlled?
- 11 How much oxygen is in a tanker?
- 12 What is slop tank in ship?
- 13 What is the conclusion of inert gases?
- 14 Which gas is not present in atmosphere?
- 15 Why is nitrogen an inert gas?
Why fuel oil tanks are not inerted?
If the bunker tanks cannot reach 60 degree Celsius, it cannot produce cargo vapours that are rich in hydrocarbons; thus no explosion can occur. And thus, inert gas is not being used in bunker tanks.
Why cargo tank should be inerted during loading and discharging of crude oil?
Tankers carry flammable cargoes. For this reason, the oxygen level inside the cargo tanks need to be such that even if the source of ignition is accidentally present, the fire triangle would still not complete. The process of reducing the oxygen level in the cargo tank is called inerting.
Why is an inert gas required on an oil tanker?
Inert gas system is the most important integrated system for oil tankers for safe operation of the ship. Inert gas is the gas that contains insufficient oxygen (normally less than 8 %) to suppress the combustion of flammable hydrocarbon gases. The concentration of inert gas is kept around 5% as a safety limit.
Which is heavier inert gas or air?
There is little density difference between air and inert gas; inert gas from a combustion generator is slightly heavier than air while nitrogen is slightly lighter.
Why CO2 is not used in inert gas?
Carbon dioxide – An inert gas becomes active During welding, CO2 can be used in combination with argon or helium. But it is very important to note that carbon dioxide loses its shielding gas character at higher temperatures and becomes an (partially) active gas.
What is the difference between inerting and purging?
As nouns the difference between inerting and purging is that inerting is the filling of a fuel tank with an inert gas to reduce the risk of explosion while purging is the act by which something is purged.
What should be the first consideration when discharging an oil cargo?
What should be the first consideration when discharging an oil cargo? aboard a tanker? Oil product samples should be taken at the commencement and completion of loading operations.
What is the first consideration when discharging an oil cargo?
At the beginning of the operations, confirm that no oil leaks from piping joints and that no oil inflowing into tanks other than the tank being used. Continue monitoring of the Oil Level from the discharging tanks, until settling down of cargo pumps and flow rate.
What is the importance of stripping of liquid cargo?
Stripping cargo tanks is carried out to ensure that as much cargo as possible is discharged. Normally the vessel will use stripping pumps and lines for this purpose as they will reach the last drop of cargo that the bulk discharge pumps cannot reach.
When discharging a tanker How can list be controlled?
1. When discharging a tanker, how can list be controlled? If choice C is selected set score to 1. audible and visual alarm if the pressure reaches a certain level.
How much oxygen is in a tanker?
Each truck has a capacity of containing 15,000 litres of medical oxygen,” Additional Chief Secretary (Home) Awanish Kumar Awasthi told PTI.
What is slop tank in ship?
Slop tanks are present onboard tanker to store oily water mixture from cargo tank washing. The number of slop tanks depends on the Dead weight Tonnage (DWT) of the vessel. Sludge tank. Located in engine room, this tank is used to store sludge produced after treating fuel or lube oil through purifiers.
What is the conclusion of inert gases?
✔The noble gases are the chemical elements in group 18 of the periodic table. ◀They are the most stable due to having the maximum number of valence electrons their outer shell can hold. ◀Therefore, they rarely react with other elements since they are already stable.
Which gas is not present in atmosphere?
Xenon is used in headlights for cars. Radon (Atomic number 86) is a radioactive substance produced due to decay of Radium-226 found in Uranium ore. This is not present in the atmosphere.
Why is nitrogen an inert gas?
Molecular nitrogen is a colorless, odorless, tasteless, and inert gas at normal temperatures and pressures. The strong triple-bond between the atoms in molecular nitrogen makes this compound difficult to break apart, and thus nearly inert.