Seismic design of API 650 flat-bottom tanks

Our company is a specialized technical support and after-sales service organization - customer service center. At the same time, we have provided excellent technical API 650 flat-bottom tanks personnel and strong technical support for our company, and cultivated an excellent after-sales team for our company. Our company will appoint a full-time service manager to be responsible for the unified coordination of technical support and API 650 flat-bottom tanks after-sales service of the project.The thickness of the API 650 flat-bottom tanks annular bottom plates shall be in accordance with Table Q-4 (for steel or aluminum, as applicable). The thicknesses shown are minimums. The ring of annual plates shall have a circular outside circumference, but it 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 Q.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by a weld as required by API 620 oil tank 5.9.5 except when a full-penetration weld is used or required (see Q.7.1.1). Butt-welds in annular plates shall be not closer than 12 in. from any vertical weld.API 650 petroleum storage tanks are used for API 650 flat-bottom tanks storage. API 650 petroleum storage tanks can be made of carbon steel, austenitic stainless steel and nickel alloy (only for low temperature). Welding API 650 flat-bottom tanks certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For API 650 petroleum storage tanks, non-destructive inspections are required, but third-party inspections are not required.The cultural construction must let the enterprise staff participate in the enterprise culture, in order to better carry on the effective dissemination enterprise idea, the sharing value system, such as the internal communication, the newspaper, the forum, the propaganda, the news announcement and so on. At the same time, the system can also be used to educate and train employees, send blessings to employees on their birthdays or during Chinese New Year holidays, so that employees can feel the practice of corporate culture, the warmth of the enterprise, and enhance the sense of belonging and recognition of the enterprise.When the day light gradually decreases, the temperature of oil in the API 650 flat-bottom tanks will also decrease, the evaporation speed will gradually slow down, and the pressure in the API 650 flat-bottom tanks will also decrease. When the pressure in the API 650 flat-bottom tanks is lower than the negative pressure rating of the breathing valve, the outside air is sucked into the API 650 flat-bottom tanks through the open vacuum valve, which is the "suction" process of the oil tank.