ASNT CP-189 was approved by the ASNT Board of
Directors in January, 1989 as a standard for the qualification
and certification of NDT personnel. The intent was to produce
a new document that provided strict requirements rather than
simply guidelines. ASNT obtained ANSI accreditation to process
this document through a consensus balloting process that would
recognize ASNT CP-189 as a national standard. The first successful
consensus document became the ANSI/ASNT CP-189-1996 followed with
ANSI/ASNT CP-189-2001 and ANSI/ASNT CP-189-2006.
ANSI/ASNT CP-189 is similar to SNT-TC-1A
in terms of training, experience, examinations, etc.; however,
the standard provides minimum requirements that do not permit
changes and several significant differences were introduced
to strengthen the NDT personnel qualification and certification
program: