Which type of hose is not required to have static protection when CNG is loaded or unloaded?

The correct choice indicates that neither conductive nor nonconductive hoses require static protection during the loading or unloading of Compressed Natural Gas (CNG). This is important because static electricity can accumulate in both types of hoses during flow, particularly at points of movement and friction.

In the context of CNG operations, while it is essential to minimize the risk of static discharge, it has been determined that nonconductive hoses do not need the same levels of static protection as those used for other substances, due to the characteristics of CNG itself and the specific handling protocols established in the industry. Nonconductive hoses are typically used in situations where electrostatic charge buildup is less of a concern due to the properties of the conveyed gas.

Therefore, the requirement for static protection can vary significantly based on the type of materials and the operational environment. The answer affirms that the industry standards and safety protocols have assessed that loading and unloading CNG do not necessitate static protection for either conductive or nonconductive hoses.