B31.3 Allowable Porosity 1

[timmckee]

I'm confused over the allowable surface porosity for girth welds in all fluid services.

Table 341.3.2A states that the extent of imperfection allowed is zero, however it also refers to Note 5 (These imperfections are evaluated for welds less than or equal to 3/16" in nominal thickness).

Does this mean that surface porosity is allowed for welds over 3/16" and if so what is the acceptance criteria?

 

[timmckee]

I found the answer to my question - after obtaining a version of B31.3 more current than my 1993 copy. Note 5 has been removed, surface porosity is not allowed.