MicrobiologicallyInfluenced Corrosion Report Form
The National FireSprinkler Association is working with other interested organizations todetermine the extent of a corrosion problem termed Microbiollogically-InfluencedCorrosion (MIC). Acting in concert with other types of corrosion, MIC involvesthe creation of tubercle-covered or slime-covered pits on the interiorpipe wall, in which bacteria are able to thrive. In steel pipe, MIC isoften evidenced as orange or black tubercles and/or black mud-like slime.In copper, the coloration can be blue or green. The most obvious indicationof MIC is pinhole leaks occuring after only a few years of service.

If you believe youhave observed MIC, please take the time to document the case on the formbelow, and submit it to NFSA.All personalinformation including the facility name and location will be kept confidential.Completea separate form for each incident and facility.


1. Have you observed pinhole leaks? Yes No 

2. If the answer is yes, please completethe following:

a. Approximate date of installation:
b. Approximate date that leak was detected:
c. Type of pipe or tube (material andschedule):

d. Were tubercles observed on the interiorof the pipe wall? Yes No

e. Was slime observed on the interior pipewall? Yes No

f. Was there a coloration associated withthe tubercles/slime? Yes No

If so, what color?

g. What water sources were used in testingor filling of the system? 

e. Was system tested and/or flushed regularly? Yes No


3. Please provide information on whethermultiple systems were affected at the same site:

4. Facility name and location(will be keptconfidential):

       YourName: 
        Company: 
          Address: 
          City/St/Zip: 
E-mail address: 

Is there anything else that you may wantto add?