Basic Wastewater Operator Practice Exam

What would be a normal condition for a manual control gas chlorination system?

1. The line is covered with ice

2. The line is free of chlorine gas

3. The line is free of ice

4. No feed line exists in a manual system

The correct answer is: The line is free of ice

In a manual control gas chlorination system, a normal condition would indeed be that the line is free of ice. Ice buildup can indicate that there are issues with the system, such as poor insulation or cold temperatures, which could lead to malfunctioning components or changes in system pressure and flow. Therefore, ensuring that the line is free of ice is critical for maintaining the effectiveness and safety of the chlorination process. Additionally, if the line were covered with ice, it could impede the flow of chlorine gas, resulting in inadequate disinfection and potentially leading to health hazards. A line free of chlorine gas might be interpreted as a system that is currently inactive, which is not necessarily an indication of normal operation. Finally, a manual system would inherently require a feed line for operation; the absence of a feed line would suggest a fundamental flaw in the system's design or setup. Thus, maintaining a clear and operational feed line is essential for effective chlorination.