R (7) Keep the sealed sample containers in a cool protected area.
R NOTE : After the test samples are collected, microbiological____
R contamination in the sample could change. It is recommended
R that the samples are tested in less than 6 hours and no later
R than 24 hours. AIRBUS recommends that the samples are tested
R in less than 6 hours.
R NOTE : Make a selection of one of the microbiological test kits for____
R the complete procedure. Do not compare results between
R microbiological test kits. They use different methods to give
R results. If you need help, refer to the manufacturer of the
R kit.
R
R Subtask 12-32-28-281-060
R B. Sample Analysis - MICROBMONITOR2 Test Kit Procedure
R (1) Do one of the steps that follow to check the sample(s) for
R microbiological contamination:
R (Ref. Fig. 302/TASK 12-32-28-991-005)
R (a) Use the MICROBMONITOR 2 TEST KIT ECHA MICROBIOLOGY UK (CAGE CODE
R 0HZY6) (and the manufacturers instructions) to make an analysis
R of each sample.
R (b) Send each sample to an approved laboratory for analysis.
R (2) Do a check of the results:
R NOTE : If you only do one test it can give an incorrect indication of____
R the condition of the fuel tanks. If a test shows
R contamination, (moderate or heavy) do the test again (in not
R more than 10 days) before you remove the aircraft from
R service. Use the same test kit/laboratory for the second test.
R (a) Negligible contamination:
R 1_ The contamination is negligible if:
R - the WATER sample contents has 1000 CFU (Colony Forming
R Units) or less
R - the FUEL sample contents has 4000 CFU or less.
R 2_ Continue to monitor the fuel tanks at the scheduled inspection
R interval. No microbiological treatment is necessary.
R Maintenance Plan Flowchart - Microbiological Contamination R Figure 302/TASK 12-32-28-991-005
1EFF : ALL 1 12-32-28Page 315 1 1 May 01/05 1 1 1CES 1
R (b) Moderate contamination:
R 1_ The contamination is moderate if:
R - the WATER sample contents has between 1000 and 10000 CFU
R - the FUEL sample contents has between 4000 and 20000 CFU.
R 2_ Use the same method and do the sample test again in not more
R than 10 days after the first test.
R 3_ If the contamination has not changed from moderate:
R - do the BIOBOR biocidal shock treatment (moderate
R contamination procedure) to all fuel tanks (Ref. TASK 28-11-
R 00-600-008) or (Ref. TASK 28-11-00-600-008)
R or
R - do the KATHON biocidal shock treatment (moderate
R contamination procedure) to all fuel tanks (Ref. TASK 28-11-
R 00-600-008) or (Ref. TASK 28-11-00-600-008).
R (c) Heavy contamination
R 1_ The contamination is heavy if:
R - the WATER sample contents has more than 10000 CFU
R - the FUEL sample contents has more than 20000 CFU.
R 2_ Use the same method and do the sample test again in not more
R than 10 days after the first test.
R 3_ If the contamination has not changed from heavy:
R - do the BIOBOR biocidal shock treatment (heavy contamination
R procedure) to all fuel tanks (Ref. TASK 28-11-00-600-009) or
R (Ref. TASK 28-11-00-600-009)
R or
R - do the KATHON biocidal shock treatment (heavy contamination
R procedure) to all fuel tanks (Ref. TASK 28-11-00-600-009) or
R (Ref. TASK 28-11-00-600-009).
R NOTE : When you do the heavy contamination procedure, you will____
R need to enter all the fuel tanks to remove the
R contamination (Ref. TASK 28-11-00-600-003).
R Subtask 12-32-28-281-061
R C. Sample Analysis - FUELSTAT RESINAE Test Kit Procedure
R NOTE : The FUELSTAT RESINAE test kit shows the most frequent type of____
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