Good evening and greetings to everyone. Thank you for allowing me in your forum. I`m a new user, just out of technical college, with almost a year of working experience. I hope I can eventually add something to the wisdom and knowledge contained in this site, but right now I can only seek to benefit from your superior experience, skills and intellect.
I´ve been contracted for the leak inspection of several sets of large refrigeration pipes being installed in a supermarket. The diameters of the pipes are 2-5/8 and 3 inches. The length of the sets are between 90 to 120 feet. I´ve used nitrogen for similar jobs in much smaller systems, but never before tried to tackle such a large system.
In the same building, there is a compressed air system used for pneumatic packaging machines. I see that the compressed air goes through a mechanically refrigerated drier and several stages of filtration. As the copper pipes, after being installed, are containing ambient air anyway, would it be possible to use dried/filtered air for leak testing ? Thank you for any comments.