Problems after pressure testing of pipeline vent openings
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Is the vent of the pipeline sealed with threads directly after the pressure test, or is it sealed by welding, depending on the medium?
I don’t understand; if it’s meant to be left open, why does it still need to be sealed? ?
After air release, it should be followed by a valve section; it’s best for the release port to have a threaded seal
Some use threaded connections, while others use sealed welding. Sealed welding is definitely safer.
Reply to 1# Tianzhuzi: The measures taken for the venting point after pressure testing depend on the medium flowing in the pipeline. For toxic media, butt welding of pipe caps is used, followed by RT testing; for common utility media, threaded pipe caps or valves/blind flanges are employed