API Std 650 aboveground steel oil storage tanks deck plates

Upon completion of API Std 650 aboveground steel oil storage tanks construction, provide Purchase with a Vendor's Certification that the tank conforms to the requirements of API 650 and to the additional requirements as specified.

Anti corrosion of API Std 650 aboveground steel oil storage tanks:
After using for a certain period of time, it is necessary to check the corrosion protection of the API Std 650 aboveground steel oil storage tanks. If necessary, the outer wall of the metal oil tank should be painted with new anti-corrosion paint to ensure that the outer wall of the API Std 650 aboveground steel oil storage tanks does not fall off and has good waterproof and rust resistance.
API Std 650 aboveground steel oil storage tanks cleaning:
The long-term use of API Std 650 aboveground steel oil storage tanks will produce impurities on the tank wall and deposit on the tank bottom, resulting in tank corrosion to leakage. According to the safety standard of oil tank, the API Std 650 aboveground steel oil storage tanks shall be cleaned and derusted regularly to ensure the quality of oil stored and the safety of oil tank equipment.

The ring of API Std 650 aboveground steel oil storage tanks annular plates shall have a circular outside circumference, but may have a regular polygonal shape inside the tank shell with the number of sides equal to the number of annular plates. These pieces shall be butt-welded in accordance with API Standard 620 R.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by welds as required by API Standard 620 5.9.5 except when a full penetration weld is used or required.

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