Cross Connection Practice Exam

If a leak is detected in shutoff valve #1 during the initial testing of a Double Check Valve Assembly, what action can the tester take?

1. Ignore it

2. Replace the shutoff valve

3. Compensate for the leaking valve by opening the bleed off valve arrangement

4. Decrease the water pressure

The correct answer is: Compensate for the leaking valve by opening the bleed off valve arrangement

When a leak is detected in shutoff valve #1 during the initial testing of a Double Check Valve Assembly, opening the bleed off valve arrangement is an appropriate action. This approach allows for the mitigation of excessive pressure in the system without compromising the integrity of the Double Check Valve Assembly. By opening the bleed off valve, the tester can relieve pressure and potentially adjust the flow conditions that might be causing the leak to affect the test results. This action is significant because it enables the tester to continue assessing the performance of the assembly without needing immediate replacement or major repairs. Rather than ignoring the leak, which poses risks to public health and safety due to potential backflow contamination, or replacing the shutoff valve right away, which might not be necessary, this method provides a more practical method to manage the situation during the testing process. Additionally, decreasing the water pressure could lead to unintended consequences in the system, such as insufficient flow or pressure for other components. Thus, utilizing the bleed-off valve serves as a more effective and immediate remedy in this scenario.