According to NFPA 52, how should composite containers be protected from UV radiation?

The correct response emphasizes the importance of following manufacturer specifications regarding the protection of composite containers from UV radiation. These containers are often made from materials that can degrade or lose structural integrity when exposed to prolonged sunlight or ultraviolet rays. Therefore, manufacturers provide guidelines that include the appropriate protective measures to ensure the containers maintain their strength and functionality over time.

This ensures that safety standards and material integrity are upheld, as the guidance is based on testing and best practices relevant to the specific materials used in the construction of the container. Following these guidelines is crucial in preventing potential failures that could arise from UV damage, ensuring the safe transport of compressed natural gas.

The other choices do not reflect best practices as outlined by NFPA 52. Not allowing protection, permitting minimal exposure, or simply painting with standard paint may not adequately meet the specifications set by manufacturers and could lead to safety hazards. Hence, adhering to the manufacturers' recommendations is key in maintaining the safety and efficiency of composite containers used in CNG delivery.