Container repair hydrostatic test
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Hello teachers: The original equipment data is a horizontal hydraulic pressure test of 1.7 MPa. The current equipment is installed vertically at a height of 10 meters. How much pressure is required for the hydraulic pressure test after maintenance?
Your pressure test is wrong. I calculated that it should be 1.82MPa. When doing the pressure test standing upright, there are two main issues to consider. 1. The liquid column static pressure compensation problem is determined by the installation position of the meter.； 2. When calculating the supports in the calculation book, does the load-bearing check of the vertical liquid pressure test be considered? ；
I also want to learn how this hydraulic test is calculated. For discrete and horizontal types, is it based on the allowable stress of each pressure component at the test temperature/the allowable stress of each pressure component at the design temperature.
I also want to know how everyone calculated it to be 1.8MPa. study * one time. Thanks! It would be better if you can help with the calculation process, thank you!
It’s okay to press according to the requirements of the design drawing, or it’s also okay to press according to the approved pressure.
GB150 Part 1 4.6.2 Install a pressure gauge on the top during the vertical test. The test pressure requires that the bottom pressure is not higher than the bottom pressure during the horizontal test, and must be lower than 1.7
The vertical type is based on the horizontal type plus the static pressure of the liquid column at the bottom of the container during the hydrostatic test. 1.7 plus 11 meters of water column is a little more than 1.8. This is clearly stated in the standard GB/T150.
Don't just look at the nameplate, you need to find the design drawings, which should have vertical test pressures.