TheLucifer
New member
Hi Colleagues,
We are trying to design a Water/Waste System to an aircraft and ground test phase is coming soon. After the installation of system to aircraft, ground test team will test the system with pressurized dry air for leakages. Test duration is 15 minutes and pressure will be measured after this duration to see if system leaks or not.
Ground test team warned me that they are used to have a permitted leakage rate, which does not count as installation failure. They say that since all the system connections are not welded, there will be negligible leakages from connections, couplings, even from ball valves when dry air is used.
On the other hand, our supplier insists that pressure drop during the test should be zero. I beleive that ground test team is right, but I can't calculate a leakage rate for them. Is there a rule of thumb for this? If you know, can you suggest me any references/books that I can find more information?
We are trying to design a Water/Waste System to an aircraft and ground test phase is coming soon. After the installation of system to aircraft, ground test team will test the system with pressurized dry air for leakages. Test duration is 15 minutes and pressure will be measured after this duration to see if system leaks or not.
Ground test team warned me that they are used to have a permitted leakage rate, which does not count as installation failure. They say that since all the system connections are not welded, there will be negligible leakages from connections, couplings, even from ball valves when dry air is used.
On the other hand, our supplier insists that pressure drop during the test should be zero. I beleive that ground test team is right, but I can't calculate a leakage rate for them. Is there a rule of thumb for this? If you know, can you suggest me any references/books that I can find more information?