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OPERATORS INFORMATION TELEX - OPERATORS INFORMATION TELEX
TO: A318/A319/A320/A321/A300/A310/A300-600/A300-600ST/A330/A340/A340-500/A340-
600/A380 Operators
SUBJECT: ATA 00 - RADIOACTIVE CONTAMINATION DUE TO RADIATION LEAK IN
JAPAN
OUR REF: SE 999.0025/11 dated 16 March 2011
CLASSIFICATION: Information
REFERENCES:
AEA Guidelines on Radioactive Contamination of Aircraft & Engines (2002)
ICAO Manual on Volcanic Ash, Radioactive Material and Toxic Chemical Clouds, Doc 9691
FAA Advisory Circular 20-48 " ractice Guide for Decontaminating Aircraft"
1. PURPOSE
This OIT is written to provide operators with AIRBUS comments relating to aircraft radioactive
contamination that may be encountered due to aircraft operation in an area affected by a
radiation leak.
2. BACKGROUND
Operators are reminded that guidance from the relevant national and international authorities
takes precedence over any recommendation that Airbus may make in relation to
measurement of radiation levels, or decontamination of radioactive items.
The Association of European Airlines (AEA) has issued a document entitled "Guidelines on
Radioactive Contamination of Aircraft and Engines", which can be found on the AEA website.
It contains information that will be useful to operators. It can currently be found at the
following website:
http://www.aea.be/press/publications/index.html
ICAO has also issued a document entitled "Manual on Volcanic Ash, Radioactive Material and
Toxic Chemical Clouds", Doc 9691, which can be found at the following website:
http://www.paris.icao.int/news/pdf/9691.pdf
3. DISCUSSION OF MAINTENANCE ASPECTS
3.1 DETECTION OF RADIOACTIVITY
In order to check if the aircraft has radioactive contamination, Airbus understanding is that the
aircraft has to be tested with appropriate equipment, such as a Geiger counter. Airbus does
not have the expertise to suggest how to measure radiation levels or what equipment to use.
Each operator should contact the relevant national atomic energy authorities for such
information. Similarly, Airbus cannot advise on the level of radioactivity considered normal or
"background", and the national authorities should be consulted for such information.
Note that the AEA document entitled "Guidelines on Radioactive Contamination of Aircraft
and Engines" suggests alert levels that could be used.
Areas where radioactive contamination can accumulate on the Aircraft include the following:
1. Engines and Nacelles
2. Cockpit and cabin areas
3. Cabin air recirculation filters
4. APU area, including intake
5. External parts of the aircraft
If an aircraft is tested for radioactive contamination and there is no abnormal finding, in
particular in the inspected areas which could have accumulated the suspected radioactive
contamination, Airbus has no further recommendation, provided that the relevant national &
international atomic energy authorities confirms that there are no further required actions.
Operators are reminded that there may be an obligation to report any findings of radioactive
contamination to the relevant authorities.
3.2 DECONTAMINATION
In case of radioactive contamination findings, Airbus is not able to provide radioactive
decontamination procedures to operators. Such procedures may be available from the
responsible radiological experts under guidance of the national and international authorities.
Operators should contribute to the safety of personnel by adhering to the advice and
procedures given by the national and international authorities.
Note that the FAA advisory circular 20-48 addresses how to practice radioactive
decontamination of aircraft and, therefore, contains some relevant information.
In the event that cleaning of the aircraft is required as part of the radioactive decontamination
task, there are AMM tasks that could be used as a basis. These tasks were not specifically
designed to deal with radioactive contamination and therefore may need some modification,
including, for example, to protect personnel , or for other reasons. Their use and suitability
should be reviewed with the relevant national atomic energy authorities. If it is required to use
alternative products to clean the aircraft that are not listed in the aircraft CML, then please
contact Airbus for advice regarding compatibility of such products with the aircraft.
a. AMM task 05-51-25-200-802-A "Inspection after Flight through Dust Storm or
Dust Contamination on Ground"
b. AMM task 12-21-11 "External Cleaning"
c. AMM task 12-21-12 "Internal Cleaning" omitting the disinfection,
disinsectization, fumigation and special precautions against insecticide tasks.
d. AMM task 21-21-41-PB401 - "Recirculation Filter removal/installation"
Replace ALL cabin air recirculation filters. Replace the avionics ventilation filter
also.
e. AMM task 21-00-00-100-802-A "Cleaning of special components in the
environmental control system"
f. AMM task 38-10-00-170-807-A "Flushing of the potable water system"
g. AMM task 38-10-00-670-805-A "Disinfection of the potable water system"
h. AMM task 38-31-00 PB 701 "Toilet System cleaning"
Note: AMM References given above are for A330 aircraft as an example. For other aircraft
types the task references may vary. |
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