Design Of A Floating Roof Tank For Storing Crude Oil Or Petrochemicals
Storage tanks have been widely used in many industries such as the chemical, petroleum and petrochemical industries in storing varieties of products. The different types of tanks include cone roof tanks, floating roof tanks, spherical tanks etc. More
Floating roof storage tank had been used widely over the world in many industries. These tanks are designed, fabricated and tested to code and standard. There are variety of codes and standards stating the similar common minimum requirement and some additional requirements from company standards or specification.
It is known that the design engineers are usually not familiar or not exposed to the actual site conditions, there designs being basically based on the code and standard requirements and basic theory from reference book. Some would only rely on the commercial software for the basic design; they have limited knowledge on the actual tank operation which limits them on cost effectiveness and even safety detail design, particularly on the floating roof tank.
There are therefore usually limited procedures and rules in designing the floating root tank. These had resulted lots of floating roof failure in the industry. Hence, industry, tank owner and also the tank designer or Engineer need to have a simple rules and formula to ensure the floating roof is adequately designed and strong enough for the various loading during operation.
Floating roof tanks are normally build in a gigantic site which would involve various disciplines such as chemical, civil, mechanical, construction, fire safety, inspection, commissioning and operation.
The scope of work of each different discipline would have some effect on the tank design. An example is the design of the tank foundation undertaken by the civil engineer. The foundation is normally designed to withstand all the loads of the tank with its content. Improper design would result in foundation sagging or excessive soil settlement which in turn induces extra stresses to bottom of tank and tank shell.
Hence, it is essential for the engineer or tank designer to know how and what effects each inter discipline’s design would have on one’s tank that affected the tank integrity, and taking all this consideration into his design.
Available ebook formats: