Which of the following is not a justification for condemning a cylinder during a visual examination?

The justification for condemning a cylinder during a visual examination focuses on the integrity and safety of the fire extinguisher itself. Peeling paint, while it may indicate cosmetic issues or exposure to environmental factors, does not necessarily compromise the functionality or structural integrity of the cylinder. This means that the extinguisher can still be operational despite the appearance of its exterior.

In contrast, evidence of being burned in a fire, pitting under a removable nameplate, or using the extinguisher for substances like insecticide can lead to serious concerns about the cylinder's strength, pressure retention, and overall reliability. These conditions suggest potential damage or contamination that could render the extinguisher ineffective in an emergency scenario.

Therefore, the correct choice highlights that cosmetic issues, such as peeling paint, do not justify condemning an extinguisher, as they do not directly impact its ability to perform its critical function.