Bleed-out of penetrant from a cold shut is classified as what type of indication?

Bleed-out of penetrant from a cold shut is classified as a true indication because it represents a real defect in the material being examined. Cold shuts are areas where two folds of metal fail to fuse properly during the solidification process, creating a potential pathway for the penetrant to escape. When penetrant seeps out, it indicates the presence of a flaw, which means it is not merely an artifact or random noise but a legitimate finding that reflects the integrity of the material. This helps in identifying issues that can affect structural integrity and performance, making it crucial for inspection processes in various industrial applications. Recognizing these true indications allows for timely corrective measures to be taken, ensuring safety and reliability in the components being tested.