mgreen0302
Mechanical
- Dec 30, 2020
- 2
My team is working on a pressure test procedure for a 15-mile 6" HDPE natural gas gathering line in the US that has a MAWP of 125 psig, and we've run into a few roadblocks that I wanted to get some input on. My team has a background in carbon steel interstate transmission lines, not "low" pressure plastic gathering systems, so this is new territory for us. We have been going back and forth between a hydrostatic test and a pneumatic test, and a few questions came up with air testing:
[ol 1]
[li]What would be the allowable maximum test section length for a pneumatic test?[/li]
[li]Is there an industry rule of thumb for maximum number of untested tie-in welds on plastic pipeline systems?[/li]
[/ol]
[ol 1]
[li]What would be the allowable maximum test section length for a pneumatic test?[/li]
[li]Is there an industry rule of thumb for maximum number of untested tie-in welds on plastic pipeline systems?[/li]
[/ol]