API standard 650 liquid-storage tanks vertical shell joints

Our company's technical department is the core department of the whole company. There are a group of very professional technical personnel. They provide some architectural drawings according to the ideas of customers, and they are responsible for how to select the right materials. Including the evaluation of steel products such as multi steel plate, API standard 650 liquid-storage tanks and steel pipe, grasp the whole production process, and strictly follow the production standards and customer quality requirements.

API standard 650 liquid-storage tanks Manhole: The manhole is used for the operator to enter and exit the oil tank for inspection, cleaning and repair. For the convenience of personnel access, the installation position of the manhole is generally on the center line of the oil tank bottom, and the vertical oil tank is installed at the lowest layer of the tank wall. API standard 650 liquid-storage tanks Light-transmitting hole: Light-transmitting hole is also called day-lighting hole. It is used for lighting and ventilation when inspecting, repairing and scrubbing the oil tank. It is generally installed on the top of the oil tank above the inlet and outlet pipes.

Except as permitted by API standard 620 Q.8.6, the test shall be conducted after the entire tank is complete, before the insulation is applied. Except as limited by foundation or stress conditions, the test shall consist of filling the tank with water to the design liquid level and applying an overload air pressure of 1.25 times the pressure for which the vapor space is designed. The load on the supporting foundation shall preferably not exceed the established allowable bearing value for the tank site. Where a thorough evaluation of the foundation justifies a temporary increase, the established allowable bearing may be increased for the test condition, but the increase shall be not more than 25%.