[ARC5] CW Use in Fighters

[Mike Hanz]

I took the time to read the Occupational Safety and Health Guideline for 
Zinc Chromate link on this, and to be more correct, they state that the 
"National Institute for Occupational Safety and Health (NIOSH) considers 
zinc chromate a *potential* human carcinogen [NIOSH 1992]"  Notice the 
word *potential*.  It produced cancerous growth when implanted inside 
the bodies of the lab animals, but so does almost everything we use in 
modern life.  They then go on to recommend protective measures that are 
essentially identical to applying many other coatings that are quite 
popular and used extensively, like two part isocyanate polyurethane 
enamel coatings that I've used on my machine tools and farm utensils for 
an indestructible finish in a harsh environment.  I just bought some 
more zinc chromate from one of the aircraft parts suppliers, and found 
no indication of quantity limits or permissions needed.  You just have 
to be intelligent about its use.

73,
Mike  KC4TOS

> On Mar 24, 2012, at 9:27 AM, Sandy wrote:
>> Wonder what the military aircraft industry is using as a substitute?
> Zinc Chromate paint is highly toxic and contains hexavalent chrome
> (Chromium VI),  a category 1 carcinogen
>
> Dennis D.  W7QHO