“SEVILLA FIRE” is a trademark of Class B Fire Extinguisher (Foam Fire Extinguisher) produced by PT. Tegalrejo International Online Technology, where Foam was discovered before World War I in 1902 by Aleksandr Loran in BAKU, the Russian Empire. Because from 1900 to 1920, Baku was one of the world’s oil production centers, with many oil wells and storage tanks nearby, hydrocarbon fires were very common.

World War I broke out in 1914-1918. Technology developed rapidly due to military and oil industry needs. During the war, there was a high demand for scanners for:

– Aviation fuel fires

– Fuel storage tanks

– Warships

– Oil depots

After World War II, foam research progressed rapidly:

• Protein foam was developed in 1940
• High expansion foam was developed in 1950
• AFFF was developed by the US Navy in 1960
• Foam bladder tanks began to become popular in oil refineries.

Furthermore, foam is now the precursor to devices such as:

• Foam chambers
• Foam bladders
• Foam monitors
• AFFF/AR-AFFF, and so on.

Why is plain water ineffective for oil fires? Because oil floats in an air bag, if air is poured on it, the burning oil can spread, as the air doesn’t cover the fuel surface.

So, a layer of foam can cover the oil surface, separating oxygen, and preventing fuel vapors from escaping. So, it’s not air that absorbs the liquid fuel, but rather a blanket of foam.

So, the evolutionary path is:

1. The discovery of foam from Baku
2. Global refineries developed
3. Foam concentrate became more sophisticated
4. The need for practical storage
5. The foam bladder tank was born in 1960

So, in fact, the FBT brand “Sevilla Fire,” produced by PT. Tegalrejo International Online Technology, still works in the same historical line as the oil fire problem in BAKU 120 years ago.