Class 5 Boiler Practice Exam

Is a pressure vessel under 500 sq ft and over 100 psi exempt?

1. Yes, it is exempt

2. No, it is not exempt

3. It depends on the state regulations

4. Only if it contains water

The correct answer is: No, it is not exempt

The correct answer indicates that a pressure vessel under 500 square feet and over 100 psi is not exempt from regulations. This stems from national and state safety standards which generally dictate that pressure vessels must meet specific safety and operational requirements regardless of their size, as long as they operate above critical pressure thresholds. Pressure vessels, even those that are smaller than 500 square feet, can pose significant hazards if not properly maintained and certified, particularly when they operate at high pressures. The combination of size and pressure brings with it risks that necessitate regulatory oversight to ensure safety and compliance with established standards. There may be variations in state regulations regarding exemptions; however, the foundational principles governing pressure vessels typically require oversight for such configurations to ensure safety. Thus, the exemption status is consistent across many jurisdictions, reinforcing the necessity of regulations in protecting public safety.