Main drain test shall be conducted ______ at each water-based fire protection system riser.

Main drain test shall be conducted ______ at each water-based fire protection system riser.

• A. Daily
• B. Monthly
• C. Annually
• D. Weekly

Answer: (C)

The main drain test is a check of the water supply path to the riser and the condition of the drain pathway. By opening the main drain, you verify that water can actually reach the riser with the expected pressure and that the drainage path is clear and functioning. This ensures the system would be able to deliver water promptly if it's needed and helps catch issues like a partially blocked drain, a closed valve, or a deteriorating pipe over time. Because these conditions can develop gradually, the test is performed on an annual basis as part of routine inspection, testing, and maintenance. More frequent testing is not typically required unless the authority having jurisdiction specifies otherwise.

The main drain test is a check of the water supply path to the riser and the condition of the drain pathway. By opening the main drain, you verify that water can actually reach the riser with the expected pressure and that the drainage path is clear and functioning. This ensures the system would be able to deliver water promptly if it's needed and helps catch issues like a partially blocked drain, a closed valve, or a deteriorating pipe over time. Because these conditions can develop gradually, the test is performed on an annual basis as part of routine inspection, testing, and maintenance. More frequent testing is not typically required unless the authority having jurisdiction specifies otherwise.