Manufacturing scope for Class B boilers
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The superheater outlet pressure is 2.45 MPa, and the drum pressure is 2.7 MPa – can it still fall within the category of Class B boilers?
TSG G0001-2012, page 2, clause 1.4.2: For Class B boilers, the pressure range for steam boilers is 0.8 MPa
Thank you. Currently, the manufacturing permit for Class B boilers still specifies a pressure level of less than or equal to 2.5 MPa; it does not follow the pressure range specified in the new regulations for Class B boilers. I’m worried that the actual operating pressure of the boiler drum might exceed the rated operating pressure required by the manufacturing permit for Class B boilers. You are right; the rated operating pressure of a boiler is determined based on the superheated steam pressure at the outlet of the superheater, which keeps it within the manufacturing limits for Class B boilers. Thank you very much.
Thank you for the reply from the second floor. Currently, the manufacturing permit for Class B boilers still specifies a pressure level of less than or equal to 2.5 MPa; it does not follow the pressure range specified in the new regulations for Class B boilers. I’m worried that the actual operating pressure of the boiler drum might exceed the rated operating pressure required by the manufacturing permit for Class B boilers. You are right; the rated operating pressure of a boiler is determined based on the superheated steam pressure at the outlet of the superheater, which keeps it within the manufacturing limits for Class B boilers. Thank you very much.