Rim Seal Floating Roof Tank

Floating roof tank rim seal protection system.

Rim seal floating roof tank.

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 can be installed with the tank in service. The roof rises and falls with the liquid level in the tank. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

Rim mounted seals. Rim mounted secondary seals are fixed at the top of the rim plate on the floating roof. Mesa etp engineers each product to meet unique circumstances including floating roof and rim characteristics tank profile product stored schedule and economic situation. 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 fire protection system. The design of these primary seals is therefore very important. 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. These seals are always fitted above a conventional primary seal.

Mesa etp is the exclusive carrier of wg seals an industry leader of primary and secondary floating roof seals for aboveground storage tanks. Hmt offers a full line of primary and secondary seals for both internal and external floating roof tanks. Rim seal floating roof tank fires represent one of the most dangerous threats for chemical and petrochemical storage farms. The first barrier against emission in the rim area of an external floating roof is the primary rim seal.

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. For this reason it is imperative that you select the proper perimeter seal for your floating roof storage tanks. External floating roof seals are designed to prevent product loss and atmospheric contamination in the form of air shields from above ground storage tanks.

Seal systems are designed to meet environmental regulations and ensure efficient operation in specific warehouse conditions. A tight fitting secondary seal acts as an excellent secondary vapour barrier containment also protects the tank contents primary seal against weather elements debris. As opposed to a fixed roof tank there is no vapor space in the floating roof tank. It also serves at a safety device reducing the risk of combustible vapours in this area.

In principle this eliminates tank breathing loss and greatly reduces the evaporative lo.