American Society for Nondestructive Testing (ASNT)
4153 Arlingate Road, Caller # 28518, Columbus, OH, 43228-0518
ASNT "Recommended Practice No. SNT-TC-1A (1988), Personnel Qualification and Certification in Nondestructive Testing" 98.25-97(c)(2)
American Society of Mechanical Engineers (ASME) International
Three Park Avenue, New York, N.Y. 10016-5990
ASME Boiler and Pressure Vessel Code, section V, Nondestructive Examination (1986) 98.25-97(a)(1)
46 C.F.R. §98.01-3