Hi, all
would you help me to solve this situation: welding process SMAW, reference standard API 1104, base material API 5L X 52  0.406" thickness, electrodes E6010 for root & hot pass, E7010 P1 for filler and cap pass. tension tests acceptable, root and bend tests acceptable, nick break tests one acceptable and the other with an indication as shown in the pictures. how can you interprete the bright indication shown in the pictures? 

any comment will be appreciated

n4v4rr0