Dear All,
I have problem about % RH requirement of air inside Nitrogen piping transport system in Gas Manufacture. After I already finished hydrostatic test for Nitrogen piping transport system by fresh water and used to air compressed for blow out. But It's still a lite bit water inside.
The owner want to drain out water remain inside piping clearly and measure % RH of air inside piping. But I don't know % RH requirement of air after drain out. So Everybody can show me standard that require about % RH requirement of air.
Thanks so much.