Re: [foxboro] Safety systems
- From: <tom.vandewater@xxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 24 Mar 2006 10:47:18 -0500
Thanks Alex and Mark. I would have been very surprised if you had said
it WAS TUV/SIL rated. It takes a lot of time and money to get that done
and the A2 system, as I understand it is the lower priced spread. I
doubt it would still be low priced if you met all of the TUV/SIL
requirements:)
Tom VandeWater
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Grant, Mark T
Sent: Friday, March 24, 2006 10:40 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Safety systems
Sorry for the late reply. Alex is correct on SIL; BMS has been
validated
for Foxboro A2.
Mark
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On
Behalf Of Johnson, Alex P (IPS)
Sent: Friday, March 24, 2006 10:34 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Safety systems
Foxboro A2 is NOT SIL rated.
However, burner management systems have been built with non-SIL
equipment
for some time, but there are restrictions on when and where that is
appropriate.
Regards,
=20
Alex Johnson
Invensys Systems, Inc.
10900 Equity Drive
Houston, TX 77041
713.329.8472 (voice)
713.329.1700 (fax)
713.329.1600 (switchboard)
alex.johnson@xxxxxxxxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On
Behalf Of tom.vandewater@xxxxxxxxxxxxxx
Sent: Friday, March 24, 2006 8:23 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Safety systems
Kenneth Moore wrote referring to the Foxboro A2 System:
Does this system have a TUV SIL rating?
I would also like to know the answer to this question but didn't see any
reply to this. Are you still out there Mark Grant of Foxboro A2
Marketing?
Thanks for any info!
Tom VandeWater
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx on behalf of Grant, Mark T
Sent: Wed 3/22/2006 5:11 PM
To: 'Neil Martin '; 'foxboro-bounce@xxxxxxxxxxxxx ';
'foxboro@xxxxxxxxxxxxx '
Cc: Kambach, Rob
Subject: Re: [foxboro] Safety systems
=3D20
Foxboro manufacturers a new DCS control system that meets NFPA code for
BMS.
It affords many advantages over a PLC (peer to peer control, very low
cost
redundant option, highly distributed low cost architecture, visual panel
interface and Distributed Control central management capabilities - it
is a
DCS). It has redundant control as an option and has blocks that allow
for 2
of 3 voting and other blocks that allow it to be compatible and
appropriate
for BMS and BCS applications. Foxboro A2 is the small DCS control
system
that is complimentary to I/A but is used for less complex and smaller
applications. Triconex offers the greatest level of control and uptime.
Invensys offers a full complement from simple to highly complex BMS
solutions.
Mark Grant
Foxboro A2 Marketing=3D20
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
To: foxboro@xxxxxxxxxxxxx
Sent: 3/22/06 1:22 PM
Subject: Re: [foxboro] Safety systems
It all depends on the SIL requirements, Boiler Code, desired full
function
test frequency, and desired low spurious trip rate. We have SIL2
requirements, and desire a minimum 2 year test frequency, thus the
expection is that we will install a TMR system on a project we are
currently looking at. If you want low spurious trip rates, the hardware
cost difference after providing available redundancy is not really very
much. If you use a PLC and implement per the safety manual, I believe
you
will find that it will require you to do a lot more than what would be
required for a TMR, and it will have a higher spurious trip rate. The
Allen Bradley safety manual for using a Control Logix PLC mentions a
SIL2
compatibility at a 1 year test frequency. Most likely, the PLC will not
have the capability for the same level of redundancy as can be provided
by
TMR system.
Neil Martin, P.E.
Huntsman Polymers Corporation
2505 South Grandview
Odessa, TX. 79766
ph) 432-640-8436
pager)432-742-4289
email page)4327424289@xxxxxxxxxxxxx
=3D20
<duc.do@dowcornin
g.com> To:
<foxboro@xxxxxxxxxxxxx> =3D20
Sent by: cc:
foxboro-bounce@fr Subject: [foxboro]
Safety systems =3D20
eelists.org
=3D20
=3D20
03/22/2006 10:15
AM
Please respond to
foxboro
=3D20
Hi list,
A question came up about what people commonly use for their safety
systems such as BMS (burner management system) on boilers and other
critical and perhaps dangerous things. For those of you who use such
things, do you use PLC-type equipment or more robust stuff like Triconex
or August systems?
Since this is a fairly generic question that probably engender generic
answers, please send your answers directly to me, off-list. Thank you!
Duc
--=3D3D20
DCS Group, Carrollton Plant
Dow Corning Corporation
Carrollton, KY, US
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