Inspection method for welded joint

Abstract

An inspection method for a welded joint formed between a pair of base metals 10, 20 with a groove part 12, 22 and an abutment face 14, 24 being formed on a joint surface Wc between the pair of base metals 10, 20, includes steps of: forming a recessed groove 32 opening to a surface of the base metal 10, 20 in advance at one end of the abutment face; irradiating the joint surface Wc from an X-ray generator 34 placed on a groove part formation side (an exterior space O side) toward the joint surface Wc after at least one pass P1 of build-up welding is performed on the groove parts 12, 22; and determining presence or absence of incomplete penetration in the welded joint part W based on an image formed on a photosensitive film 42 by radiation penetrating the joint surface Wc.

Dependencies are inferred from the claim text.