API Std 650 welded aluminum storage tanks drains

In API 650 oil storage tank, when the mixing ratio of combustible medium and air reaches a certain limit, it is easy to cause explosion. Therefore, it is necessary to add API Std 650 welded aluminum storage tanks external floating roof to open cylindrical steel API Std 650 welded aluminum storage tanks tank. At present, the external floating roof is most suitable for large-scale API 650 oil storage tank in China, ranging from 20000, 30000, 50000 cubic meters to 100000 cubic meters.

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

The tank shall be filled with water to the design liquid level unless height is limited as noted in API 620 standard Q.8.1. After the tank is filled with water and before the pneumatic pressure is applied, anchorage, if provided, shall be tightened against the hold-down brackets. All welds in the API Std 650 welded aluminum storage tanks shell, including the corner weld between the shell and the bottom, shall be visually checked for tightness.

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