A fire at a floating roof tank was caused by switching operations ccps 2007b.
External floating roof storage tank.
External floating roof and internal floating roof.
Because the flexible floating roof deck can float up and down to close to the liquid level gas space above the liquid level can be greatly reduced thereby greatly reducing the evaporation.
An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate.
The floating roofs can be either external i e with open top tanks or internal i e inside fixed roof tanks.
The roof rises and falls with the liquid level in the tank.
Types of floating roofs in storage tanks.
Floating roof is the core component of floating roof storage tank which is divided into two types.
These are categorized as external floating roofs which are designed to meet requirements of api standards 650 appendix c.
Floating roof tanks cost more to construct than fixed roof tanks for the same storage capacity.
The tank contained approximately 7 000 barrels of diesel oil at the time of the incident and had previously contained gasoline.
Internal floating roof tank is known as internal floating roof storage tank floating roof oil tank internal floating plate storage tank and internal floating plate oil tank etc.
Specifically it is an environment friendly and economical storage tank or oil tank installed a floating roof under the vault of the tank usually made of aluminum stainless steel or other material to prevent the.
The principal types of floating roof designs which are installed in tanks which store crude and middle distillate products are summarized below.