New stress factors for boiler tube min. wall calculations

[frostrobn]

Does anyone know anything about a 1998 revision to ASME BPVC Section I which changed the stress factors used when calculating boiler tube minimum wall? What does it take to get approval to use these factors on a pre-1998 boiler? Jurisdictional approval?

 

[metengr]

What specifically are you referring to?

 

[chicopee]

Whenever we were asked about repairing a boiler, we told our clients that we would follow the year to which the ASME Power Code I was fabricated and not the current code of the time.