In the 1GR pipe position, which corrective action is appropriate if the root pass is too heavy?

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Multiple Choice

In the 1GR pipe position, which corrective action is appropriate if the root pass is too heavy?

When the root pass in a pipe weld becomes too heavy, the key issue is controlling heat input and metal deposition at the root so the bead sits at an appropriate depth without excessive buildup. Moving to a flatter horizontal position reduces the influence of gravity on the molten pool, helping it wet the bevel more evenly and form a shallower, more controllable root bead. This creates a better foundation for subsequent passes and minimizes the risk of excessive reinforcement. The other options would either increase gravity effects (working closer to the vertical or downhill), unnecessarily slow or speed up travel in a way that can worsen fusion or bead shape, or switch to a different process when the issue is more about heat and position.

When the root pass in a pipe weld becomes too heavy, the key issue is controlling heat input and metal deposition at the root so the bead sits at an appropriate depth without excessive buildup. Moving to a flatter horizontal position reduces the influence of gravity on the molten pool, helping it wet the bevel more evenly and form a shallower, more controllable root bead. This creates a better foundation for subsequent passes and minimizes the risk of excessive reinforcement.

The other options would either increase gravity effects (working closer to the vertical or downhill), unnecessarily slow or speed up travel in a way that can worsen fusion or bead shape, or switch to a different process when the issue is more about heat and position.

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