6063 aluminum shapes API Std 650 carbon and low-alloy steel tanks

Some defects may be found after the regular safety inspection for the API Std 650 carbon and low-alloy steel tanks. The common API Std 650 carbon and low-alloy steel tanks defects are: Tank cracks, tank welding defects. The cracks on the base metal, surface and near surface of the tank wall shall be eliminated by grinding with circular arc, and then magnetic particle inspection or re inspection shall be carried out. Cracks in heat affected zone: generally, grinding method is used to eliminate cracks, and magnetic particle or dye flaw detection is used to confirm that there is no crack, and then repair welding or grinding smooth transition.

There is a gap of 100 mm to 500 mm between the shell of API 650 crude oil storage API Std 650 carbon and low-alloy steel tanks tank and the floating plate of external floating roof to ensure that there is no chuck during operation. Use API Std 650 carbon and low-alloy steel tanks edge sealing system to reduce edge evaporation. The support legs of API 650 crude oil tank floating roof are usually movable and retractable and suspended in liquid.

Both parties shall confirm the API Std 650 carbon and low-alloy steel tanks material object and the quality of the products, confirm the reasons for the defects and the quality of the products, and sign the quality inspection agreement. Major quality objections shall be reported to relevant leaders in a timely manner, and shall be discussed and solved with the API Std 650 carbon and low-alloy steel tanks steel plant.