I am a compressor tech and have been for a decade now, so I’d like to think I know a little something about this.
The reason the tank ID tag was able to be spot welded on is because it was pressure tested and certified after all the welding was done, including welding on the tag. Being a pressure vessel, it has to meet or exceed the required specifications before it can be approved for use, then it can receive its CRN number.
As far as tank testing is concerned, no one tests them hydrostaticlly anymore. We have customers’ old and questionable tanks tested all the time, and it’s done ultrasoniclly now. There are many companies that offer this service, and although the fee isn’t necessarily cheap, it’s sound piece of mind for something that can potentially kill you if it ruptures. Especially when you get up into the 400, 600, 2000 gallon and larger tanks. Just imagine if one of those failed catastrophically, it would literally level the building.
They will test it in several locations, the end bells, the tank sides etc to determine if the integrity is at all compromised, and provide a detailed report afterwards.
The reason the tank ID tag was able to be spot welded on is because it was pressure tested and certified after all the welding was done, including welding on the tag. Being a pressure vessel, it has to meet or exceed the required specifications before it can be approved for use, then it can receive its CRN number.
As far as tank testing is concerned, no one tests them hydrostaticlly anymore. We have customers’ old and questionable tanks tested all the time, and it’s done ultrasoniclly now. There are many companies that offer this service, and although the fee isn’t necessarily cheap, it’s sound piece of mind for something that can potentially kill you if it ruptures. Especially when you get up into the 400, 600, 2000 gallon and larger tanks. Just imagine if one of those failed catastrophically, it would literally level the building.
They will test it in several locations, the end bells, the tank sides etc to determine if the integrity is at all compromised, and provide a detailed report afterwards.