[Lowfer] Here's a good one!

Fri, 17 Oct 2003 18:02:58 -0400

WOW     a sticky situation

I could see that happening if the oil is insulating
Know what the oil is ?? Teflon or some other ?? 
the system doesnt use HV to attract impurities
like a smoke eater  ??

Odd fer sure

Bob

On Fri, 17 Oct 2003 13:21:50 -0400 "Bill Ashlock" <[email protected]>
writes:
> I was just called out to the mfg floor to look an unusual HV problem 
> (and, 
> Peter, I guarantee this is NOT a hypothetical problem). They use a 
> electric 
> pump and a filter to remove impurities from an expensive type of 
> oil. The 
> oil is pored in a 5 gal polyethylene bucket and circulated through 
> the pump 
> and filter. The hoses used have a stainless steel jacket and are 
> grounded 
> electrically to the frame that supports the pump and filter. The 
> pump is 
> grounded properly to the 110v outlet. There is a 1/2 inch metal pipe 
> elbow 
> in the bottom of the bucket not connected to anything.
> 
> OK, after the oil has been allowed to circulate in the bucket for 
> maybe 15 
> seconds they can touch one of the metal hoses to the elbow and draw 
> up to a 
> 1/2" spark within the oil!! It's definitely static electricity. 
> Anyone heard 
> of anything like this?? I've been asked to determine if there are 
> any safety 
> issues in this process.
> 
> Bill A
> 
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