Industry data base shows that the oil industry has experienced several rim seal fires worldwide and some of them have developed into very large disasters.
Rim seal floating roof tank.
It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.
The roof rises and falls with the liquid level in the tank.
A tight fitting secondary seal acts as an excellent secondary vapour barrier containment also protects the tank contents primary seal against weather elements debris.
These seals are always fitted above a conventional primary seal.
An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate.
Seal systems are designed to meet environmental regulations and ensure efficient operation in specific warehouse conditions.
In principle this eliminates tank breathing loss and greatly reduces the evaporative lo.
Rim seal fire protection system.
Rim mounted secondary seals are fixed at the top of the rim plate on the floating roof.
As opposed to a fixed roof tank there is no vapor space in the floating roof tank.
Mesa etp is the exclusive carrier of wg seals an industry leader of primary and secondary floating roof seals for aboveground storage tanks.
Our seals solutions provide an optimal combination of reliability and performance with a low total cost of ownership.
Floating roof seals literally thousands of tons of voc vapors escape through floating roof perimeter seals each year according to the u s.
Floating roof tank rim seal protection system.
Mesa etp engineers each product to meet unique circumstances including floating roof and rim characteristics tank profile product stored schedule and economic situation.
Rim mounted seals.
The system is designed and manufactured for extremely fast detection and extinction of rim seal fires as per the international safety.
Hmt seal systems are customized for each specific tank with a variety of configurations component sizes and material options available to handle any application and stored product.
It also serves at a safety device reducing the risk of combustible vapours in this area.
The first barrier against emission in the rim area of an external floating roof is the primary rim seal.
Grishma s tank guard floating roof tank protection is a fully automatic detection cum extinguishing system.
External floating roof seals are designed to prevent product loss and atmospheric contamination in the form of air shields from above ground storage tanks.
The design of these primary seals is therefore very important.
Rim seal floating roof tank fires represent one of the most dangerous threats for chemical and petrochemical storage farms.
The causes of such disasters start with a rim seal fire that breaks out and grows undetected to a point that it spreads over the whole seal area and therefore the floating roof tank becomes surrounded by fire.
