Which factor can contribute to a gas pipeline failure?

Corrosion or physical damage is a significant factor that can contribute to a gas pipeline failure. Over time, the materials used in pipelines can deteriorate due to various environmental conditions such as moisture, chemical exposure, or soil conditions. Corrosion can weaken the structural integrity of the pipeline, making it more susceptible to leaks or breaks. Additionally, physical damage could stem from external impacts, such as construction activities, natural disasters, or heavy machinery operating in proximity to the pipeline. Both factors can compromise the safety and functionality of the pipeline, leading to potential failures that could result in hazardous situations.

In contrast, increased gas pressure can lead to issues, but it is typically managed through system design and safety protocols. Aged gas odorants are related to detecting leaks rather than causing failures, and frequent maintenance checks are essential for identifying and mitigating potential risks, thus promoting pipeline safety. Therefore, while other options may relate to pipeline operations and safety monitoring, corrosion and physical damage are primary contributors to actual pipeline failures.