API 650 was updated on August 2011. This addendum consists of the pages that have changed since the June 2007 printing of the 11th edition and Addendum 2 dated November 2009.

The abstract below, it is excerpt from Kuan Siew Yeng's bachelor thesis. This study is very useful for tank designers. You can download his thesis completely at University of Southern Queensland web page.

"Storage tanks have been widely used in many industrial particularly in the oil refinery and petrochemical industry which are to store a multitude of different product with crude oil as one if it. There are different types of tank such as fixed roof tank, open roof tank, floating roof tank etc. Floating roof tank is which the roof floats directly on top of the product, with no vapour space and eliminating the possibility of flammable atmosphere.

There are various industrial code and standard available for the basic requirement for tank design and construction. Commercial software are also available in the market for the basic design, hence tank designer would rely wholly on the software without detail understanding. Despite of the various standard and code, there is limited procedure and rules in designing the floating roof which result lots of floating roof failure and caused injuries and fatalities accident. Design and safety concern has been a great concern for the increasing case of fire and explosion due the tank failure.

The main objective of this project is “How to design a new floating roof tank”. The aim of this project is to develop basic rules and procedures, highlighting the concerns in designing, construction and operation of a floating roof by taking an existing Oil Development Project with it’s readily available information as a base, to design the tank, and identify the problematic and lesson learnt throughout the project."

Here is the direct link of thesis.

My company is getting smaller in design area. Therefore, I will quit the end of August 2010. With my over fifteen years of experience working as a design engineer, I participated many international projects. Hire me! Because I have the experience and expertise in the area of design.

My resume is here for your interests. Please don't hesitate to contact me.