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, 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 =20 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=20 -----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 =20 <duc.do@dowcornin g.com> To: <foxboro@xxxxxxxxxxxxx> =20 Sent by: cc: foxboro-bounce@fr Subject: [foxboro] Safety systems =20 eelists.org =20 =20 03/22/2006 10:15 AM Please respond to foxboro =20 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 --=3D20 DCS Group, Carrollton Plant Dow Corning Corporation Carrollton, KY, US _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: = mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Djoin to unsubscribe: = mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Dleave =20 =20 _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. 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