I am using an Inficon sniffer probe to find the leaks, 25% He & 75% Ni, especially good for areas that are not visible to the human eye.The He testing is definately more expensive but when you look at the big picture, reputation, returns + their shipping charges, and rebuilds, its not really...
I cannot hydro over night or for several hours due to volumn of items & test equipment. I am just trying to prove the higher level of leak tightness integrity the helium test has over the code mandated hydro, which I will still have to do for the code req'd 15 minutes. The AI could care less...
Expensive yes, but not when you consider the costs of having to cut out a leaking vessel out of a cold box and still having to build another and paying shipping costs twice.
I'd be happy to eat the cost of helium to avoid shipping out something that could leak after several hours of...
I am trying to find a way to compare the leak rate between simple hydro testing vs Helium Leak testing at a level of 1 x10-6 cc sec. I recently had a vessel that was hydro tested per code, 15 min hold time. It was returned due to a leak. Upon retest it took 65 minutes for a single drop of water...
