Sir,

I have a 48 inch pipe ( crude srvice, 427 defg F and 226 psig design conditions, ASTM A335 Gr. P5 material, applicable to ASME B31.3) in a horizonal plane. This pipe is supported, at a 90 deg elbow, by a 24 inch trunnion support.
How can I know if a reinforcement pad is required at this connection or not? If yes, what width of pad is required? and is there any formula,general practice or standard to be followed?

Thanks,