As far as ASME B31.3 is concerned could you please advise if the pressure rating of a CLass 150 flange has an allowance for unsustained occassional loading as would occur in a surge situation?
I understand that for hoop and longitudinal stress that this may be incresed for such cases but does it also apply to fiitings such as flange joints?
I understand that for hoop and longitudinal stress that this may be incresed for such cases but does it also apply to fiitings such as flange joints?