What hazard is created when charges accumulate to the point of an uncontrolled discharge?

• A. Static electricity
• B. Thermal burn
• C. Chemical spill
• D. Noise

Answer: (A)

Static electricity is the hazard created when charges accumulate and then discharge uncontrollably. That discharge can take the form of a spark or an arc, and in environments with flammable vapors, solvents, dust, or sensitive energetic materials, even a tiny spark can ignite them. The ignition energy required for many fuels or explosives is very low, so uncontrolled static discharges pose a real ignition risk. This is why grounding and bonding, using antistatic equipment and flooring, controlling humidity, and minimizing friction-causing handling are essential precautions. Other options describe different hazards that aren’t caused by electrical charge buildup, like heat from direct contact, chemical releases, or loud sounds, which aren’t the mechanism here.