What must be done to a sprinkler system after repairs or alterations?

After any repairs or alterations to a sprinkler system, it is essential to test and inspect the system before placing it back into service. This step ensures that the repairs have been properly executed and that the system functions correctly. A thorough test and inspection help to verify that the system can effectively provide fire protection as intended and that no issues have been introduced during the repair process, such as leaks or malfunctions.

This practice is vital for maintaining the operability and reliability of the sprinkler system, ensuring compliance with fire safety regulations and standards. The inspection process typically includes checking pressure levels, confirming proper operation of the sprinkler heads, and ensuring that all components are in good working condition.

While other options may seem related to the maintenance of sprinkler systems, they do not specifically address the critical need for testing and inspection following repairs. For instance, painting or redrawing the layout may be part of routine maintenance or aesthetic improvements, and reporting to the fire department is not a necessary requirement in every situation following a repair. Therefore, the most crucial action to take after repairs is the testing and inspection to ensure the system is safe and ready for operation.