A516 grade 55 plates API standard 650 cylindrical welded storage tanks
Generally speaking, the duration of the "exhalation" of the API standard 650 cylindrical welded storage tanks is longer than that of the "inhalation" of the API standard 650 cylindrical welded storage tanks every day. There are many factors affecting the "small breathing" loss, mainly including the following points: the change of temperature difference between day and night, sunshine time of the API standard 650 cylindrical welded storage tanks location, open area of the API standard 650 cylindrical welded storage tanks, atmospheric pressure, filling degree of API standard 650 cylindrical welded storage tanks, etc. When the API standard 650 cylindrical welded storage tanks is full of gas, the space volume is small, and the "small breathing" loss is less; if the space volume is large, the loss is also large.
Impact Requirements for Controlled-rolled or Thermo-mechanical Control Process (TMCP) Plates: Subject to the approval of the Purchaser, controlled-rolled or TMCP plates (material produced by a mechanical- thermal rolling process designed to enhance the notch toughness) may be used where normalized plates are required. API 620 welded storage tanks each used plate, as rolled, shall be Charpy V-notch tested to the requirements of R.2.1.2.
API 650 petroleum storage tank body design is mainly the design of tank bottom, API standard 650 cylindrical welded storage tanks tank top and tank wall, and the design of tank wall is particularly important. As the main pressure bearing part of API 650 petroleum storage tank, the tank wall bears loads including liquid pressure, wind pressure, seismic load, opening stress, etc. The calculation of such loads is explained in detail in various API standard 650 cylindrical welded storage tanks storage tank design standards. But in addition, the API 650 petroleum storage tank wall also bears the push-pull force and torque of the connected pipeline.
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