Canadian Entry To Practice (CETP) 2025 – 400 Free Practice Questions to Pass the Exam

The correct choice regarding the percentage of the pound Water Capacity (WC) rating that represents the maximum propane capacity when filling a cylinder by weight is indeed 80%.

This percentage is significant because it ensures safety during the filling process. Propane expands as temperatures rise, and filling a cylinder to 100% of its WC rating would not allow for this expansion, leading to a risk of overpressure and potential rupture of the cylinder. By filling to only 80% of the WC rating, there is adequate space that allows for the expansion of propane gas without exceeding safe pressure limits.

Thus, the practice of filling cylinders to 80% ensures both the safe handling of propane and compliance with regulatory standards, minimizing hazards associated with propane storage and usage.