Recommended Practice No. SNT-TC-1A: Personnel Qualification and Certification in Nondestructive Testing (2020) provides guidelines for employers to establish in-house certification programs for the qualification and certification of NDT personnel. It provides the educational, experience, and training recommendations for each NDT method. Since 1966, employers have used this industry-valued document as the general framework for their NDT certification programs. Now sold individually, it is recommended that SNT-TC-1A (2020) be purchased with ANSI/ASNT CP-105: ASNT Standard Topical Outlines for Qualification of Nondestructive Testing Personnel (2020).