A573 Gr 70 plates API 650 mechanically-anchored flat-bottom tanks
Fixed roof API 650 oil storage tank includes inner floating roof tank, which API 650 mechanically-anchored flat-bottom tanks can effectively prevent sand, rain, snow or dust from polluting the storage liquid. Under various weather conditions, API 650 oil storage tank can ensure the quality of liquid storage, which is called "all-weather API 650 mechanically-anchored flat-bottom tanks storage tank".
To scientifically evaluate the remaining service life of the API 650 mechanically-anchored flat-bottom tanks, it is necessary to know the thickness change and development trend of the storage tank sheet after long-term use, combined with the metal characteristics of the storage tank, the influence of various external conditions and the continuous change of the oil pressure in the API 650 mechanically-anchored flat-bottom tanks, etc. factors to judge. Because the metal characteristics, corrosion defects, load and other numerical parameters of the API 650 mechanically-anchored flat-bottom tanks are randomly changed, the value of the remaining service life of the storage tank will also be dynamic.
API 650 mechanically-anchored flat-bottom tanks Pressure-relieving DevicesTanks shall be protected by automatic pressure-relieving devices that will prevent the pressure at the top of the tank from rising more than 10% above the maximum positive gauge pressure except as provided in API 620 standard 9.2.2.Where an additional hazard can be created by the exposure of the tank to accidental fire or another unexpected source of heat external to the tank, supplemental pressure-relieving devices shall be installed. These devices shall be capable of preventing the pressure from rising more than 20% above the maximum positive gauge pressure. A single pressure-relieving valve may be used if it satisfies the requirements of this paragraph and 9.2.1.
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