What is required for flexible metallic tubing used in CNG applications regarding static protection?

In the context of flexible metallic tubing used in Compressed Natural Gas (CNG) applications, static protection is not required. This is because flexible metallic tubing, typically made from materials that can safely dissipate static electricity, is designed to handle the specific needs of CNG transport without the risk of static discharge causing a hazard. This tubing is engineered to maintain integrity and safety under the conditions associated with natural gas handling, including pressure and potential for ignition.

In scenarios involving static electricity, certain protocols may be applicable to prevent sparks, especially during loading and unloading of fuel. However, the flexible metallic tubing itself is inherently designed to mitigate static charge buildup, which reduces the necessity for additional static protection measures. Therefore, stating that static protection is not required reflects an understanding of the specifics of the material and the operational context for CNG applications.