What safety measure should be taken for treated pipes used in oil heating systems?

Treated pipes used in oil heating systems must be protected from corrosion to ensure their longevity and safety. Corrosion can lead to leaks, which pose significant risks, including the potential for fire hazards or harmful oil spills. By implementing protective measures, such as coatings or materials that resist degradation, the integrity of the pipes is maintained, ensuring the system operates efficiently and safely over time.

In contexts where oil is heated, environmental exposure and the nature of the materials in the pipes can lead to various forms of corrosion. Addressing this protection is critical in preventing contamination and maintaining system reliability. This focus on corrosion prevention is a standard practice in the oil heating industry, emphasizing the importance of ensuring all elements of an oil heating system are safeguarded against breakdown.

The other options do not adequately address the primary concern of long-term safety and functionality of the pipes in oil heating systems. For instance, while insulation can be beneficial for energy efficiency and maintaining temperature, it does not directly prevent corrosion. Clear markings or mere painting may improve identification or aesthetics but do not contribute to the pipes' resistance to corrosion.