API Std 650 SUG I tanks internal floating roof loads

The company's sales department has a professional team, they have professional steel knowledge, respond quickly, with the problems raised by customers can quickly give solutions, put the interests of customers first. With their own professional knowledge to provide customers with high-quality steel plate in line with the requirements. At the same time, in terms of price, we also have great advantages. Members of the business department make sure that the delivery time is short and the service is the best.

When the day light gradually decreases, the temperature of oil in the API Std 650 SUG I tanks will also decrease, the evaporation speed will gradually slow down, and the pressure in the API Std 650 SUG I tanks will also decrease. When the pressure in the API Std 650 SUG I tanks is lower than the negative pressure rating of the breathing valve, the outside air is sucked into the API Std 650 SUG I tanks through the open vacuum valve, which is the "suction" process of the oil tank.

Allowable compressive stresses shall be in accordance with 5.5.4 except that for aluminum alloy plate the allowable compressive stresses shall be reduced by the ratio of the modulus of compressive elasticity to 29,000 for values of (t – c)/R less than 0.0175 and by the ratio of the minimum yield strength for the aluminum alloy in question to 30,000 for values of (t – c)/R equal to or greater than 0.0175 (see 5.5.2 for definitions). In all other equations in this standard API Std 650 SUG I tanks where yield strength or modulus of elasticity is used, such as Equations 27 and 28, similar corrections shall be made for aluminum alloys.