According the ASME B31.4 Clause437.4.1:Hydrostatic Testing of Internal Pressure Piping:
Portion of piping system to be operated at a hoop stress of more than 20% of the specified minimum yield strength of the pipe shall be subjected at any point to a hydrostatic proof test equivalent to not...
GregLamberson:
Thank you very much.
However, our client require to install the concrete anchor for the buried pipeline. For the calculation, only net longitudinal compressive stress due to the combined effects of internal pressure and temperature rise can not be used to size the concrete...
Dear Everyone;
ASME B31.4 434.17.2 State:
Scraper traps on mainline terminations and tied into connection piping or manifoldding shall be anchored below ground with adquate concrete anchor when required and suitable supported above ground to prevent transmission of line stress due to expansion...
Thanks very much for your so quickly response. The inlet pipe is 20inch and outlet pipe is 16inch, and the rated flow is about 1000m3/h. If the vacuum pump is determined to be installed, how to select it? which type is suitable? Thanks a lot.
Recently, I am involved with a sewage pump station, which are centrigugal pump and is applied for transporting the sewage from one pond to other area.
With regard to centrifugal pump, it is well know that,the inlet pipe of centrifugal pump must be primed, in ordet to avoid the air bind and...
