What should be tested when tubercles and slime are found in a sprinkler system?

When tubercles and slime are identified in a sprinkler system, it is essential to test for microbiologically influenced corrosion (MIC). Tubercles are small, tuber-like growths often formed in the presence of bacteria that thrive in moist environments, while slime refers to the biofilm created by these microorganisms.

The presence of these formations indicates that bacteria are actively colonizing the interior surfaces of the piping. These microorganisms can produce corrosive byproducts that may lead to accelerated deterioration of metal components within the system. Testing for MIC helps determine if the bacterial activity is affecting the integrity of the sprinkler system, allowing for corrective measures to be taken before significant damage occurs.

Addressing the issue of MIC is crucial, as it not only impacts the longevity and performance of the sprinkler system but also may pose potential risks to overall water quality and safety. By understanding the implications of microbiologically influenced corrosion, a maintenance strategy can be developed to mitigate these risks effectively.