ASME I Capacity Change

[loilfan]

I've been told that the PSV capacity calculations from Section I changed at some point from 10*(Heating Surface Area) to (Boiler output in Btu/hr)/1000 as it's now written in PG-67.2.1.4.

Does anyone know at about what edition that change occurred?

 

[loilfan]

Never mind, people. From my research into the old Codes, it seems that my colleague was thinking of ASME IV Table HG-400.1.