Alclad 6061 aluminum plate API Std 650 carbon steel storage tanks

Natural ventilation loss: the main cause of natural ventilation loss is that the API Std 650 carbon steel storage tanks is not tightly sealed. This is usually due to corrosion perforation on the top of the oil tank, or there is a height difference between the two orifices. The air tightness of the mixture in the API Std 650 carbon steel storage tanks is higher than that of the air, which causes the mixture gas in the tank to be discharged into the atmosphere from the lower hole, and the external air flows into the tank from the high hole, resulting in natural ventilation loss.

The materials used in the construction of Appendix Q oil tanks may be subject to severe pitting, cracking, or rusting if they are exposed to contaminated test water for extended periods of time. The Purchaser shall specify a minimum quality of test water that conforms to Q.8.3.2 through Q.8.3.8. After the water test is completed, the tank API Std 650 carbon steel storage tanks shall be promptly drained, cleaned, and dried.

Before the start of erection, inspect each API 650 tank foundation to ensure that it is level and acceptable to receive Work. Remove temporary erection attachments welded to the interior or exterior of the API Std 650 carbon steel storage tanks shell or to the bottom by arc gouging, and grind weld area smooth.

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