I think this system probably "...rides the line..." in that definition.
Each of the chemical areas have separate alarm systems, with their own
horns and lights, attached to the detection equipment for that
particular area.
This system is our "early warning" system, which is setup to accept
values from each of the detectors, and based on setpoints, determine if
a "early warning" should be issued. The purpose of the early warning is
not for "public safety", but to notify the operations staff either at
the plant here (about 30 miles away), or at the site, that there is
something they should look into.
Should the condition persist, and get to the actual warning levels
defined in the detector systems, the alarms for that particular area
would automatically go off.
The new IOC replaces an old "IBM XT" computer, which ran a GWBasic
(remember GWBasic???) program written by a previous contractor long
before my time.
David
>>> "J. Lewis Muir" <[email protected]> 10/7/2008 12:19 PM >>>
On 10/7/08 1:00 PM, David Dudley wrote:
> Unfortunately, all my sites are not connected together over the
network,
> some are handled using 1200 baud radios.
>
> This is one of our remote facilities, where we handle Hydrofluoric
acid
> (probably misspelled that one), Gaseous and Liquid Chlorine, and
Liquid
> Ammonium Sulfate. The alarm is to notify residents in the area in
case
> of a chemical mishap or leak. I'm lucky to have a PLC and a IOC
> available at this site, and I don't think there's enough space on
the
> IOC's ram disk for me to run the alarm handler as well.
>
> The site's pretty much dictated to me, and I'm using the IOC to
> communicate with all the gas detectors, make decisions about what's
> dangerous, and set off alarms.
Hi, David.
Just a heads-up: my understanding is that EPICS has not been designed
to
be used in a role that provides human safety. See this tech-talk post
from Andrew:
http://www.aps.anl.gov/epics/tech-talk/2008/msg00797.php
If you're using EPICS to provide some extra software alarms or
something
in addition to existing human safety alarms, that's one thing. But if
you're actually using EPICS to determine whether an alarm horn or
strobe
should go off when some environment condition could be dangerous for a
human to warn them of a danger, I don't think EPICS was designed for
that.
But this is just my understanding; I could be wrong.
Lewis
BEGIN:VCARD
VERSION:2.1
X-GWTYPE:USER
FN:David Dudley
TEL;WORK:826-1265
ORG:;MIS
TEL;PREF;FAX:880-3741
EMAIL;WORK;PREF;NGW:[email protected]
N:Dudley;David
TITLE:Functional Analyst
END:VCARD
- References:
- Process 'bo' on write? David Dudley
- Re: Process 'bo' on write? Tim Mooney
- Re: Process 'bo' on write? David Dudley
- Re: Process 'bo' on write? Maren Purves
- Re: Process 'bo' on write? David Dudley
- Re: Process 'bo' on write? J. Lewis Muir
- Navigate by Date:
- Prev:
RE: Process 'bo' on write? Chestnut, Ronald P.
- Next:
IRMIS session at EPICS Meeting - please respond if you plan to attend. Count needed!!! (no body to message) Dalesio, Leo
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
<2008>
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
RE: Process 'bo' on write? Chestnut, Ronald P.
- Next:
Re: Process 'bo' on write? Andrew Johnson
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
<2008>
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|