In pipes with an outside diameter of less than 2 3/8", slag inclusions are unacceptable under which of the following conditions?

In the context of API 1104, slag inclusions in welds can significantly undermine the integrity of the pipeline, particularly in pipes with a smaller diameter, such as those less than 2 3/8". The acceptance criteria regarding slag inclusions are critical for ensuring the structural reliability of such welds.

The correct answer encompasses all provided conditions under which slag inclusions are deemed unacceptable. Each individual condition reflects an important aspect of weld quality:

• If the length of the slag inclusion exceeds three times the nominal wall thickness, this indicates a significant defect that can lead to stress concentrations and potential failure points in the weld. Given the small diameter of the pipe, this finding is particularly relevant, as there is less material to absorb these stress concentrations.

• If the width of the slag inclusion exceeds 1/16", this measurement points to a level of defectiveness that could impact the flow and structural performance of the pipeline. Wider inclusions are more likely to disrupt the flow of the medium being transported and could act as a stress riser.

• If the aggregate length of slag inclusions exceeds 8% of the total weld length, this condition presents a severe issue in terms of overall weld integrity. High amounts of slag inclusions can cumulatively