ASNT expanded its third-party Level III certification to cover Practical and Procedure Preparation (PP) examinations in five NDT methods (MT, PT, RT, UT and VT) when it introduced the ASNT Central Certification Program in 1996.   The purpose of the ASNT Central Certification Program (ACCP) is to provide the NDT industry with personnel who have achieved a high standard of NDT qualifications by examination, and independent, transportable NDT certifications.