For hollow beads, what indication length is deemed acceptable according to welding standards?

In the context of welding standards related to hollow beads, the acceptable indication length refers to the maximum size of a discontinuity that can be present without necessitating repair. According to the provided guidelines, an indication length of 1/2 inch is acceptable for hollow beads. This standard helps ensure the integrity of the welds while allowing for minor imperfections that do not compromise the overall function and safety of the pipeline or related facilities.

Welding standards specify various acceptable limits for different types of discontinuities to ensure quality and safety. By establishing a threshold for the length of acceptable indications, these standards aim to balance between allowing for some imperfections due to the nature of the welding process and maintaining the structural integrity of the welds in critical applications. An indication length of 1/2 inch is deemed a practical measure, as it provides a clear guideline for welders to follow when assessing the quality of hollow bead welds.