API Std 650 ground supported flat-bottom tanks nominal thickness
The structure of the API Std 650 ground supported flat-bottom tanks foundation mainly includes the insulating anticorrosion layer on the top surface of the foundation, the tank wall support, the edge retaining structure, the sand cushion, the oil and water barrier, the detection signal tube and other structures. The construction materials and requirements of each basic structure of the storage tank are different. After the structure of the API Std 650 ground supported flat-bottom tanks foundation is built in accordance with the construction requirements, the settlement of the storage tank foundation needs to be observed, and the uneven settlement value of the storage tank foundation should be within the allowable safety range.
Inspection of low-pressure storage tank Butt-weldsComplete penetration and complete fusion is required (to the degree mandated by the acceptance criteria for examination method utilized) for welds joining tank wall plates to API Std 650 ground supported flat-bottom tanks tank wall plates. Examination for quality of welds shall be made using either the radiographic method specified in API 620 standard 7.15.1 and applied in 7.17, or alternatively, by agreement between the Purchaser and the Manufacturer, using the ultrasonic method specified in 7.15.3.1. In addition to the radiographic or ultrasonic examination, these welds shall also be visually examined as specified in 7.15.5. Furthermore, the Purchaser’s inspector may visually inspect all butt-welds for cracks, arc strikes, excessive undercuts, surface porosity, incomplete fusion, and other defects.
Floating roofs shall comply with API standard 650, Appendix C (Attachment 01) or with the API Std 650 ground supported flat-bottom tanks requirements as layed (laid )down in the national Chinese specifications SH3046-92 and GBJ128-90.
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The boiler steel plates are among our main products. Other than standard size boiler steel plates, we also provide API Std 650 ground supported flat-bottom tanks cutting, bending and so on processing to change plate size and shape according to your requirements. Welcome to consult us about API Std 650 ground supported flat-bottom tanks ASTM A204 grade B properties, SA 516 gr 70 temperature range, ASTM A285 grade C chemical composition, boiler steel price and so on questions and ask for offer.
