What is the minimum required frequency for testing waterflow alarm devices in a sprinkler system?

The minimum required frequency for testing waterflow alarm devices in a sprinkler system is annually. This requirement ensures that the waterflow alarms, which are critical for alerting occupants and fire authorities to a potential fire event, are functioning properly. Regular testing helps identify any malfunctions or issues that could impede the alarm's operation, allowing for timely repairs and maintenance. By conducting tests annually, facility management can maintain compliance with fire safety regulations and ensure that the sprinkler system remains effective in protecting lives and property. This frequency aligns with standard industry practices recommended in fire protection codes and standards, such as those outlined by the National Fire Protection Association (NFPA).