2011 Edition NBIC Erratum Notice
Erratum for the 2011 Edition of the National Board Inspection Code (NBIC) concerns a statement regarding when the 2011 Edition of the NBIC becomes mandatory.
The following information was inadvertently omitted from the printed publication:
Editions, which include revisions and additions to this Code, are published every two years. Editions are permissive on the date issued and become mandatory six months after the date of issue.
The revised page can be accessed here.