G2 Gas Fitter Practice Exam

According to the Ontario Gas Utilization Code, what is the allowable pressure drop in a tubing system operating at 2psig (13.79kPa)?

1. 4

2. 5

3. 6

4. 7

The correct answer is: 6

In the context of the Ontario Gas Utilization Code, the allowable pressure drop in a tubing system operating at 2 psig (13.79 kPa) is determined by the specific requirements set forth to ensure safe and efficient operation of gas systems. For systems operating at this pressure, the code dictates that the maximum allowable pressure drop should not exceed a certain threshold to maintain adequate gas flow and appliance performance. Choosing the value of six indicates that this is aligned with the standards set by the code for such systems, ensuring that the gas pressures remain stable enough for reliable function while still adhering to safety regulations. It reflects a balance between performance and safety, allowing for pressure drops that account for possible variations in flow and usage without compromising the integrity of the system. The other values suggested are either too low or too high based on the guidelines, which would either result in insufficient gas supply to the appliances or create issues with pressure stability, potentially causing inefficiencies or safety hazards in the gas system. The selection of six as the allowable pressure drop maintains compliance with established codes, ensuring both effectiveness and safety in gas distribution.