A106 grade A pipe API 650 uplifting tanks

Floating roofs shall comply with API standard 650, Appendix C (Attachment 01) or with the API 650 uplifting tanks requirements as layed (laid )down in the national Chinese specifications SH3046-92 and GBJ128-90.

Anti corrosion of API 650 uplifting tanks:
After using for a certain period of time, it is necessary to check the corrosion protection of the API 650 uplifting 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 650 uplifting tanks does not fall off and has good waterproof and rust resistance.
API 650 uplifting tanks cleaning:
The long-term use of API 650 uplifting 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 650 uplifting tanks shall be cleaned and derusted regularly to ensure the quality of oil stored and the safety of oil tank equipment.

In cylindrical tank walls, the longitudinal weld joints in adjacent shell courses, including compression ring welds, shall be offset from each other a minimum distance of 12 in. The butt-weld around the periphery of a thickened insert plate, or the fillet weld around the periphery of a reinforcing plate, shall be at least the greater of 10 times the shell thickness or 12 in. from any butt-welded seam or the bottom-to-shell or roof-to-shell joint. As an alternative, the insert plate (or the API 650 uplifting tanks reinforcing plate in an assembly that does not require stress relief) may extend to and intersect a flat-bottom-to-shell corner joint at approximately 90 degrees.

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