[27945] in North American Network Operators' Group
Re: Arlington and Fort Worth, Texas
daemon@ATHENA.MIT.EDU (Forrest W. Christian)
Fri Mar 31 02:29:26 2000
Date: Fri, 31 Mar 2000 00:27:14 -0700 (MST)
From: "Forrest W. Christian" <forrestc@iMach.com>
To: David Lesher <wb8foz@nrk.com>
Cc: nanog list <nanog@merit.edu>
In-Reply-To: <200003302314.SAA23348@sigma.nrk.com>
Message-ID: <Pine.BSF.4.21.0003310021240.19639-100000@workhorse.iMach.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Errors-To: owner-nanog-outgoing@merit.edu
On Thu, 30 Mar 2000, David Lesher wrote:
> What DOES scare the shit out of me is battery rooms built by
> idiots; including those who THINK they know what they are doing,
> as well as the "It's just a few batteries" crowd.
Any battery capable of being recharged SCARES ME TO DEATH. (Well not
quite).
Doing a fair bit of electronic design in the past, I realize how fragile a
circuit can be. All it takes is the wrong thing to short out/go bad and
you have boining sulfuric acid and the resulting fumes.
The worst story I've heard about this is from a friend who was taking a
UPS maintenance class (We're talking the big 3 phase ones here). While
he was taking the class, someone came in and asked if anyone in the class
had a specific model of UPS installed anywhere.
What had happened is that due to bad design, a solder joint would melt and
"reflow" onto an ajoining trace and as a result the charger would turn on
full, eventually boiling the batteries.
I don't even want to think what equipment looks like after it has been
through sulfuric acid vapors.
- Forrest W. Christian (forrestc@imach.com) KD7EHZ
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