Which of the following is a requirement for fire protection systems?

Annual main drain tests are a critical requirement for fire protection systems because they ensure that the entire sprinkler system is functioning properly and that water is available for use in the event of a fire. This type of test assesses the condition of the water supply and verifies that there are no obstructions or leaks within the system. Conducting these tests on an annual basis helps ensure compliance with fire safety regulations and standards, ultimately contributing to the effectiveness and reliability of fire protection measures.

The importance of these tests lies in their ability to confirm that the system is capable of delivering the necessary water flow and pressure when activated. This assessment is vital for maintaining the overall integrity and performance of the fire protection system, especially in identifying potential issues before they become critical failures. Regular main drain tests help facilities avoid significant risks and liabilities associated with inadequate fire protection.