Does a fully welded plate heat exchanger fall under the supervision and inspection requirements of the Solid and Liquid Equipment Regulations?
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This post was last edited by humanrzm on 2016-4-25 at 16:08. According to Regulation 1.5 of the Fixed Pressure Vessels Regulations, detachable gasketed plate heat exchangers (including semi-welded plate heat exchangers) are not within the scope of supervision and inspection under these regulations. So, are many fully welded plate heat exchangers now subject to such supervision and inspection? Has anyone who has done plate heat exchanger work replied? @late autumn
Among fully welded plate heat exchangers that are subject to supervision and inspection in terms of fixed capacity regulations, only plate-shell heat exchangers seem to fall under this category. The shell of a shell-and-tube heat exchanger is considered a pressure vessel, and therefore requires supervision and inspection; whereas the plate core is not a pressure-bearing component and does not need such inspection
The answer above is correct; it’s a plate-shell type structure under supervision. But fully welded ones are also made in accordance with supervised standards; it’s just that they don’t have the stamp from the inspection agency.
Calculate based on pressure, temperature, and medium
Hello, does the standard specify whether plate-and-shell heat exchangers are subject to inspection? Since the standard states that fully welded parts are exempt from inspection, can it be understood that no inspection is required at all? Are those square plate-and-frame heat exchangers (with square plates and an external structure) also subject to inspection? Thank you
Such high temperatures and pressures in fully welded designs should fall under regulatory oversight