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[Norton AntiSpam] Re: Ever wonder what it really looks

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gill.g(at)gpimail.com
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Posted: Wed Dec 09, 2009 2:32 pm Post subject: [Norton AntiSpam] Re: Ever wonder what it really looks

Roger,



EPA's ambient standard for CO is 9 ppm for 8 hours and is based on an

increased health risk by 1 in a million. OSHA's standard is 50 ppm for an 8

hour exposure.  NIOSH has a lower standard of 35 ppm.  FAA says 50 ppm.  The

Navy allows less than 10 ppm in pilots air supply to avoid psychosis.

Barry's video gives us an idea of air circulation in the cockpit but does

not tell us anything about concentrations of CO except that it will be lower

in the cockpit as compared to the exhaust stack and that it does enter the

cockpit.  Based on the fore mentioned limits, your measurements seem to

support that CO is not a serious problem especially since no one flys CJ's

or Yaks more than 3 hours at any one time.  Did I misunderstand?



Gill



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