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Dust Storm Sydney Australia Revisited March 2010

R rttechMember
Hi Folks

We have added to the original pdf report on the Sept 2009 dust storm across eastern Australia.
There is a new report under "duststorm revisited" on the carry over of the fine silica crystal portion of the dust storm washed from the Company Vehicles Air filter in March 2010, 6 months after the storm.
It appears the organic portion of the dust storm has biodegraded leaving this fine hard mobile contaminate on the loose in our environment.
Car had travelled 3000 ks in and around Sydney from Dec 2009 to March 2010.
We noticed the noise of the turbo had changed and serviced the washable air filter washing the contaminates in the report from the filter pad.
Since the dust storm we have noted an increase in the light dusting of machinery on industrial sites right across Sydney.
There is a new paper on "breather vent contamination" recently posted.


Regards

Rob S


www.rttech.com.au
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A alanwallaceMember
Hello Rob, as RobertC said thanks..
It's interesting that the heavier inorganics like the quartz crystals are traveling in the air you are breathing and your equipment is operating in. It's the hard particles that cause most of the 3 point impinging wear in our moving parts of our systems. I look forward to part 2 of your reporting.
Have you tried seperating the material post AF with magnetics to determine rough % ferrous material? Again it is just a point of interest in relation to the potential of using magnetic type of air filtration system in support of the depth media,
Keep up the great work....
regards
R rttechMember
Hi Alan

Happy new Year and apologies for missing your post, the part 2 has been put up on the website, from experience there would be a light amount of ferrous debris if we ran that though the ferrogram maker, not sure if there is any sample remaining as the report was off tape samples, if there is any dust sample remaining I'll run it and check.
We complete dust analysis as a matter of course when completing failure analysis or locating contamination sources.
If we sample trackside from Rail Traffic areas the amount of ferrous wear is moderate to heavy,
Road traffic samples usually have a light to moderate amount of ferrous wear,

Regards

Rob S
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