From tdo at stanford.edu  Thu Feb 18 12:06:29 2010
From: tdo at stanford.edu (Thomas O'Sullivan)
Date: Thu, 18 Feb 2010 12:06:29 -0800
Subject: Fire hazard
Message-ID: <4B7D9DC5.3070104@stanford.edu>

I am admitting a mistake I made this morning, in the hopes that we can 
help prevent others from making the same one.  Fortunately my mistake 
was caught before a more significant problem developed:

(this is from my wbgaas problem report)

I arrived to use the GaAs wetbench this morning, enabled, and pressed 
the POWER RESET button because I desired to use the DI water faucet.  
The previous user had left the hot plate temperature set on, and there 
was a cleanroom wipe also left on the hot plate.  Since the reset button 
powers everything on, the hot plate began to heat.  The wipe was burned 
on the hotplate, and the surface needs cleaning from the charred wipe.   

I admit that I should have checked the hot plate was off after hitting 
the POWER RESET button (as trained), but it is easy to forget since I 
had no desire to use the hot plate.  I think it would be better to have 
the DI water (and aspirator) functional by enabling on Coral, rather 
than having to hit the reset button.  That would  prevent a potentially 
hazardous situation if another user makes the same mistake.  Note this 
is how wbgen operates (there is no need to turn on the power to the hot 
plate in order to get water / aspirator). 

Thanks,
Tom


From mtang at stanford.edu  Thu Feb 18 12:12:01 2010
From: mtang at stanford.edu (Mary Tang)
Date: Thu, 18 Feb 2010 12:12:01 -0800
Subject: Fire hazard
In-Reply-To: <4B7D9DC5.3070104@stanford.edu>
References: <4B7D9DC5.3070104@stanford.edu>
Message-ID: <4B7D9F11.2030301@stanford.edu>

Thanks Tom --


This is really helpful.  Jim,/Uli -- can we rewire the power reset?


Mary

Thomas O'Sullivan wrote:
> I am admitting a mistake I made this morning, in the hopes that we can 
> help prevent others from making the same one.  Fortunately my mistake 
> was caught before a more significant problem developed:
>
> (this is from my wbgaas problem report)
>
> I arrived to use the GaAs wetbench this morning, enabled, and pressed 
> the POWER RESET button because I desired to use the DI water faucet.  
> The previous user had left the hot plate temperature set on, and there 
> was a cleanroom wipe also left on the hot plate.  Since the reset 
> button powers everything on, the hot plate began to heat.  The wipe 
> was burned on the hotplate, and the surface needs cleaning from the 
> charred wipe.  
> I admit that I should have checked the hot plate was off after hitting 
> the POWER RESET button (as trained), but it is easy to forget since I 
> had no desire to use the hot plate.  I think it would be better to 
> have the DI water (and aspirator) functional by enabling on Coral, 
> rather than having to hit the reset button.  That would  prevent a 
> potentially hazardous situation if another user makes the same 
> mistake.  Note this is how wbgen operates (there is no need to turn on 
> the power to the hot plate in order to get water / aspirator).
> Thanks,
> Tom


-- 
Mary X. Tang, Ph.D.
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
(650)723-9980
mtang at stanford.edu
http://snf.stanford.edu