API 650 self-anchored flat-bottom tanks compartment plates

Unqualified welding quality of API 650 self-anchored flat-bottom tanks is prone to hidden dangers such as oil tank steel plate cracks and leakage. To avoid this situation as much as possible, it needs to be avoided when the oil storage tank is manufactured. Scientific and reasonable measures are adopted to control the welding quality when welding the API 650 self-anchored flat-bottom tanks. How to reasonably control the welding process quality of oil storage tanks?

The API 650 self-anchored flat-bottom tanks outer wall shall be designed for the purging and operating pressure of the space between the inner and outer tank shells and for the loading from the insulation, the pressure of wind forces, and the roof loading.
The outer tank bottom, shell, and roof shall have a minimum nominal thickness of 3/16 in. (7.65 lbf/ft2) and shall conform to the material requirements of Q.2.3.

The inner layer of API 650 tank is the same as that of single layer tank. It is made of high-quality steel plate in strict accordance with the standard of "steel welded atmospheric pressure vessel". The thickness of API 650 self-anchored flat-bottom tanks steel plate reaches the standard and the service life is longer.

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