API 650 self-anchored tanks seismic base shear

API 650 external floating roof storage tanks are generally called external floating roof API 650 self-anchored tanks tanks, which means that the storage tanks are externally open tanks without a dome design, and are equipped with vertical floating roofs. API 650 external floating roof storage tanks are usually used for large More than 20,000 cubic meters of open steel API 650 self-anchored tanks storage tanks for storing volatile petroleum products such as crude oil, gasoline, kerosene, etc.

The water dissolved in the oil will be separated out from the oil stored in the API 650 self-anchored tanks for a long time, and the acidic water layer will appear at the bottom of the API 650 self-anchored tanks for a long time, which will accelerate the corrosion of the API 650 self-anchored tanks and cause the wall thinning and even leakage. With the increase of service life, the API 650 self-anchored tanks must be inspected and cleaned regularly to check the hidden danger.

Determination of Required Capacity
The aggregate capacities required for any vent valves, pressure-relieving valves, and/or vacuum-relieving valves to be provided should be determined as follows:
a)For thermal breathing and product movement, the rules given in API 2000 shall be followed. The required capacity as the result of the product movement into the tank API 650 self-anchored tanks given in API 2000, shall be multiplied by the ratio of the absolute tank pressure to atmospheric pressure (14.7 lbf/in.2 absolute).
b)For supplemental safety pressure-relieving devices to take care of extra venting capacity required in case of external fire exposure, the rules in API 2000 shall be followed.

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Booking space and making power of attorney (ten copies of order); the data of the original order shall be correct and consistent to the greatest extent when making the order, so as to reduce the frequent changes in the subsequent process. For booking with the company's seal for booking space, if the accessories for booking space (such as the price confirmation document of the shipping company) need to be provided, they can only be booked with all of them. Obtain the shipping space allocation receipt and extract the ship name, voyage number and B / L number information.