Does anyone know if my case would be an exception to UG-19 (a) because of the constant communication to the larger pressure vessel?
Please note, if the small chamber were to collapse it would not pose a safety concern nor affect the larger pressure vessel.
I have a large pressure vessel with a smaller chamber inside it. The smaller chamber is spherical with a small hole (5/32") drilled into it. The chamber is in constant communication with the larger vessel through the small hole. Upon testing it was found that during rapid filling of the large...