API Std 650 welded steel storage tanks allowable longitudinal membrane compression stress in shell

The main reason of "small breathing" loss of API Std 650 welded steel storage tanks is the change of atmospheric temperature. When the temperature rises with the increase of solar radiation from dawn, the temperature of oil in the API Std 650 welded steel storage tanks also changes, resulting in the acceleration of evaporation speed and the increase of evaporation pressure. When the pressure exceeds the positive pressure rating of the breathing valve, the oil-gas mixture in the API Std 650 welded steel storage tanks is discharged into the atmosphere through the breathing valve, which is the "exhalation" process of the oil tank.

API 650 is an American standard for welding flat bottom vertical storage tanks. This API Std 650 welded steel storage tanks standard specifies requirements for the design, manufacturing, welding, inspection and installation of storage tanks. API 650 is widely used in storage tanks designed to withstand low internal pressures and used to store typical products such as API Std 650 welded steel storage tanks crude oil, gasoline, chemicals and water. BBN has extensive experience in API 650 tanks, from +/- 500 cubic meters of tanks produced in the factory to +/- 15000 cubic meters of tanks produced on site

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Our company will accept the product quality objection registration record, pass it to the API Std 650 welded steel storage tanks production unit and relevant departments, and timely coordinate the supervision of product API Std 650 welded steel storage tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.