Canadian Entry To Practice (CETP) Practice Test

To determine the gross weight of the cylinder when it is filled with propane, it is essential to understand what the markings WC and TW represent. WC stands for "water capacity," which indicates the maximum volume of water in pounds that the cylinder can hold. TW stands for "tare weight," which refers to the weight of the cylinder itself when it is empty. In this case, the water capacity (WC) of the cylinder is 47.7 pounds, which gives an idea of how much propane can be contained in terms of weight. However, to find the gross weight when the cylinder is filled with propane, you need to add the tare weight (TW) to a portion of the water capacity representing the weight of the propane. The weight of propane is about 4.24 pounds per gallon, and since 1 gallon of water is approximately equal to 8.34 pounds, we can infer that the water capacity weight can be translated to the actual weight of propane when the cylinder is filled. When filled, the propane will replace the water weight for storage. The calculation involves: - Subtracting the tare weight from the water capacity to find the weight of the propane that would be added - Adding that weight to the tare weight to find