A537 Cl 1 plates API 650 anchored liquid-storage tanks
The calculated thickness of the above-mentioned wall panels required by the hydrostatic pressure is also It API 650 anchored liquid-storage tanks should be increased by the same ratio, unless special analysis is performed to determine the seismic overturning moment and the corresponding stress at the bottom of the wall of each layer of API 650 tank.
Personnel organization before the construction of the API 650 anchored liquid-storage tanks:The company shall select technical personnel, quality inspectors and material personnel with organizational ability and construction management experience to participate in the API 650 anchored liquid-storage tanks project construction. The construction personnel shall arrive at the construction site before the designated commencement date, investigate the construction site, build construction facilities, plan the construction steps, and analyze the potential safety hazards during operation.
The insert plate weld shall not cross any shell seams and shall be at least the greater of 10 times the shell thickness or 12 in. from any other weld in the API 650 anchored liquid-storage tanks shell including shell seams, shell-to-bottom weld or attachment welds. The butt weld around the periphery of the plate shall be examined over 100% of its length by both liquid penetrant method and radiographic method. The liquid penetrant examination is required on the root pass, on the back-gouged surface, and on the inside and outside finished weld surfaces. Additionally, the weld shall be vacuum box leak tested.
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