The shell side is saturated steam, falling within the constant-volume regime. The tube temperature is 60° warm water, and it falls outside the range of the fixed capacity regulations. Is there no non-destructive testing?
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The shell side is saturated steam, falling within the constant-volume regime. The tube temperature is 60° warm water, and it falls outside the range of the fixed capacity regulations. Is there no non-destructive testing, and is stress-relief heat treatment applied to the partition?
I’ve only heard that pressure vessels at normal pressure can sometimes be exempt from inspection, but I’ve never heard of pressure vessels under pressure being exempt from such inspection. Is fraud getting this blatant?
I remember that according to the fixed tolerance specifications, diameters larger than 159 fall under the category of tolerance specifications, and testing is required
Non-destructive testing is required; if the tube sheet is made of carbon steel, heat treatment should also be carried out if there are partitions.
Your case meets the criteria: with a volume exceeding 2.5 MPa·L, it should be considered a pressure vessel, and you don’t want to conduct non-destructive testing. That’s really bold, oh. Did you go to the boiler inspection agency to apply for a permit, only for them to ask the client to come to you later to complete the necessary procedures? If things are done this way, not to mention the money and effort spent, it’s likely that your company isn’t far from going bankrupt.
Non-destructive testing is required; if the tube sheet is made of carbon steel, heat treatment should also be carried out if there are partitions. Otherwise, during the inspection by the Special Inspection Agency, if it fails to meet the standards, the entire unit will be required to comply with the requirements of its respective category.
It is not subject to the Fixed Pressure Vessel Code, but must still comply with the GB150 standard...