Which of the following is considered an emergency situation while inspecting gas piping?

Indications of leakage or odor in free air space are considered an emergency situation while inspecting gas piping because they directly imply the presence of a gas leak. Gas leaks pose immediate dangers, including the risk of explosion, fire, and exposure to toxic gases. A strong odor of gas, often compared to the smell of rotten eggs due to the addition of odorants for safety, alerts inspectors and occupants to a potentially hazardous condition that requires immediate attention and action.

In contrast, repairs found during routine inspections, signs of rust, and corrosion from natural weathering, while they indicate potential concerns, do not represent an immediate threat to safety. These conditions can be addressed through maintenance and do not necessitate the urgent corrective actions required when a gas leak is detected.