Hello,
Yes these ARE ASME coded pressure vessels (up to 150 PSIG) and testing with steam OR air is accepted where situations dictate by the National Board of pressure vessel inspectors and has been accepted in the past by relevant authorities in other countries besides the States.
The...
Usually following a repair yes, but not always! As stated above the only time air testing would be a requirement is if its not sat in a machine and neither steam OR water are easy to supply i.e. sat in storage in a mill yard or shed, far from the main building
Yes, we have been involved with acoustic emission tests many times around the world. Thanks for looking into this! We are familiar with the guy who wrote the paper you linked me to. Not seen the paper before though!
OK, I'll be totally specific about what this is! This is a paper dryer in a paper mill. If you're not familar with these, its basically a large rotating pressure vessel filled with saturated steam. Paper is transferred from the felt onto this dryer and the paper is carried around the surface and...
Thanks everyone!In answer to rmw's question, this would be a PV with steam supplied to it by a boiler. I am trying to present an argument for the safest condition in which to carry out a pressure test? i.e would air be safer? I have heard many people say that air is more dangerous because it is...
OK, I am thinking that the steam would also become superheated as the pressure dropped due to the fracture of the vessel and release of steam. Would this mean that the water droplets in the steam would themselves 'flash off' and cause expansion?
Also, there would be an associated drop in...
Hello,
Could someone please explain why a pressure vessel filled with saturated steam at 150 psi would be much more dangerous than the same sized vessel filled with air at 150 psi, if it were to explode due to fracture? I am interested in an answer based on stored energy and I am guessing...
