Texas CNG(Compressed Natural Gas) Driver Practice

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Prepare for the Texas CNG Driver Test. Study with flashcards and multiple choice questions, each question has hints and detailed explanations. Get ready for your CNG certification exam in Texas!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which type of hose lining is required for CNG applications?

Materials resistant to heat only
Materials resistant to corrosion and CNG actions
Only rubber-based linings
Any standard hose material

The correct answer is: Materials resistant to corrosion and CNG actions

In CNG applications, it is critical to use hose linings that are resistant to both corrosion and the effects of compressed natural gas itself. CNG can be aggressive to materials and can lead to degradation of certain types of hoses if they are not designed to withstand its properties. This means the hose material must not only endure the physical pressures of CNG but should also resist chemical interactions that could weaken it over time. Materials that are specifically resistant to corrosion and the unique interactions with CNG ensure both safety and functionality. Hoses that do not meet these criteria may fail, leading to leaks or ruptures, which can be hazardous in compressed gas applications. While other options imply certain qualities, they do not cover all necessary characteristics for CNG applications, specifically overlooking the critical need for compatibility with the gas itself and long-term durability under operational conditions.