What is a potential hazard of being in close proximity to Nonel tubing during initiation?

• A. Electrical shock from the assembly
• B. Explosion from nearby flammable materials
• C. Injury from a flaw or damage to the tubing
• D. Fire from detonation of adjacent explosives

Answer: (C)

In the context of working with Nonel tubing during initiation, being in close proximity poses several risks, one of which relates to the physical integrity of the tubing itself. Nonel (non-electric) tubing is used in blasting applications to convey signals for detonation. If the tubing is to be compromised—whether through physical damage, manufacturing flaws, or environmental factors—it can lead to unintended detonations or misfires.

When the tubing has a flaw or damage, it may not function properly, potentially causing a detonation not intended or at the wrong moment. This is particularly hazardous in mining operations where precise timing is critical for safety and effectiveness. Therefore, acknowledging the risk of injury from a flaw or damage to the tubing is crucial for ensuring safe handling and operational protocols. This understanding fosters vigilance when dealing with such equipment, enabling mine personnel to mitigate risks associated with flawed equipment.