At what intervals shall anti-freeze systems be tested for the level of freeze protection?

Anti-freeze systems are a critical component in fire protection systems, especially in regions that experience freezing temperatures. Testing these systems for the level of freeze protection is essential to ensure they function effectively when needed. The correct answer indicates that these systems should be tested annually.

The rationale for this annual testing is to guarantee that the anti-freeze solution maintains its effectiveness throughout the colder months. Over time, the concentration of anti-freeze can degrade due to factors such as evaporation, contamination, or chemical breakdown. Annual testing allows for the timely detection of any issues or necessary adjustments to ensure the system provides reliable freeze protection.

In contrast, testing quarterly or semi-annually may not be sufficient in monitoring changes in the anti-freeze levels or the integrity of the system throughout the year. Testing right before cold weather may also leave inadequate time for corrective measures to be implemented if the levels are found to be insufficient. Thus, an annual testing schedule is a balanced approach that allows for proper maintenance and assurance of the anti-freeze system's performance.