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internal pressure of 4 lbf/in.2 gauge cover-plate skirt

internal pressure of 4 lbf/in.2 gauge cover-plate skirt

internal pressure of 4 lbf/in.2 gauge cover-plate skirt

The main reason of "small breathing" loss of internal pressure of 4 lbf/in.2 gauge is the change of atmospheric temperature. When the temperature rises with the increase of solar radiation from dawn, the temperature of oil in the internal pressure of 4 lbf/in.2 gauge 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 internal pressure of 4 lbf/in.2 gauge is discharged into the atmosphere through the breathing valve, which is the "exhalation" process of the oil tank.

Upon completion of construction, provide Purchaser with copies of Field Erected internal pressure of 4 lbf/in.2 gauge Storage Tank Datasheets in accordance with Appendix L of API 650, which reflects the as-built conditions, certifying that the tank conforms with the requirements of this specification.

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