Above ground ASME containers, except vaporizers, must be painted which color?

The requirement for above-ground ASME containers, excluding vaporizers, to be painted in white, aluminum, or a heat reflective color is based on safety and operational efficiency. These specific colors are essential for minimizing heat absorption, which can protect the integrity of the container and reduce pressure build-up inside due to temperature increases. Reflective colors help to maintain cooler temperatures, thereby enhancing safety by mitigating risks associated with high pressure and potential leaks of liquefied petroleum gas.

This requirement aligns with industry standards aimed at ensuring that storage containers maintain favorable conditions for the stored gas and are easily visible. These colors also help in identifying the presence of such containers, making it easier for responders in the event of an emergency. The selection of white or aluminum is particularly favored in environments with high sunlight exposure, where heat reflection becomes critical.