What is the potential issue with dirt and sludge in pipes during rigging?

The presence of dirt and sludge in pipes during rigging presents a significant concern due to the unnecessary weight they add. When pipes are being rigged, the total weight being lifted or moved must be carefully calculated to ensure it falls within safe handling limits for both the lifting equipment and the personnel involved. Excess weight from accumulated debris can lead to increased strain on rigging equipment, creating a risk of equipment failures or accidents. Additionally, the additional weight can hinder maneuverability, making it more challenging to position the pipes accurately and safely.

In contrast, other aspects mentioned in the options do not accurately reflect the realities of working with contaminated pipes. While some may assume that dirt and sludge could provide stability, this accumulation can actually lead to imbalance and unpredictable handling conditions. This also doesn’t promote ease of handling; rather, it complicates the process and increases hazards during rigging. Furthermore, the suggestion that dirt and sludge have no impact on safety disregards the very real risks posed by the added weight and possible instability they create during lifting operations.