A network of fine lines or cracks on polyethylene spray tanks indicates what condition?

The presence of a network of fine lines or cracks on polyethylene spray tanks is a clear indication of crazing, which often results from prolonged exposure to sunlight and the action of corrosive chemicals. Crazing is a form of surface damage that manifests as fine fissures or cracks, compromising the tank's integrity and potentially leading to leaks.

This type of damage occurs because ultraviolet light from the sun can degrade the polyethylene material, making it more brittle. Additionally, certain chemicals can exacerbate this degradation, causing the material to weaken and crack. The combination of these factors results in the distinctive pattern of crazing that can be observed on the surface of the tanks.

Understanding this condition is crucial for maintaining the efficacy and safety of spray equipment, as damaged tanks can lead to pesticide leaks and potential environmental harm. Regular inspection and proper storage of tanks, away from direct sunlight and harsh chemicals, can help prevent such issues.