200ft diameter API 650 partially anchored liquid-storage tanks
The seismic effects on the tank wall of API 650 oil storage tank include the inertia moment generated by the weight of the API 650 partially anchored liquid-storage tanks tank and the hydrodynamic pressure of the reservoir, which can be divided into short period pulse pressure and long period fluid slopping convective pressure.
The materials used in the construction of Appendix Q oil tanks may be subject to severe pitting, cracking, or rusting if they are exposed to contaminated test water for extended periods of time. The Purchaser shall specify a minimum quality of test water that conforms to Q.8.3.2 through Q.8.3.8. After the water test is completed, the tank API 650 partially anchored liquid-storage tanks shall be promptly drained, cleaned, and dried.
The cone slope of the completed API 650 partially anchored liquid-storage tanks foundation is 15/1000 for the general foundation and less than 35/1000 for the soft foundation. After the foundation settlement of the storage tank is basically stable, the surface slope must be greater than eight thousandths. The edge of the tank bottom should be more than 0.3 meters higher than the surrounding ground. Above the ground, the tank bottom leakage detection tube should be drawn from the foundation sand cushion and cross the foundation ring wall or the slope protection surface. The circumferential distance should be less than 20 meters, and each API 650 partially anchored liquid-storage tanks should have at least 4 detection tubes.
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