Re: [foxboro] Alarm Priorities
- From: "van der Velde, Bas" <bvelde@xxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 16 May 2002 10:16:30 -0400
A little addition to Duc's description.
The actions performed by the I/A system in reaction to an alarm are actually
configured by the user himself.
In a block you have to configure the priority of an alarm as well as the
alarm group you are sending it to.
These alarm groups range from 1 to 8. The first three are configured in the
compound the block resides in and the remaining 5 can be configured in the
STATION block of the module (CP, Gateway, etc.) in which the block can be
found.
The alarmgroups in the compounds can hold up to 8 devices as where the
alarmgroups in the STATION block can hold up to 16 different devices. The
prefered method differs between users.
For devices one should think not only of printers but also the stations
(WP's) and historian the alarm should be sent to.
And as Duc mentioned you can choose to handle alarms of different priority
in a different way.
You can configure it any way you want. Your choice...
Good luck,
Bas van der Velde
-----Original Message-----
From: duc.do@xxxxxxxxxxxxxx [mailto:duc.do@xxxxxxxxxxxxxx]
Sent: Thursday, May 16, 2002 3:53 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Alarm Priorities
The following is our alarm set-up in a nutshell (copied from an intranet
page). It's been in use for as long as we have had our I/A system here at
the Carrollton site (14 years), and it's served us well. YMMV.
Hope this helps.
Process alarms are classified into 5 distinct priority levels. Urgency
of alarms decreases as priority level increases. Level 1 and 2 alarms
will sound the horn and send a message to the configured alarm historian
and printer. Level 3 and 4 will sound the horn and send a message to the
configured alarm historian but not the printer. Level 5 will not sound a
horn or send an alarm message to a printer but will send an alarm message
to the configured alarm historian.
Priority Description
1 Priority 1 is the highest priority and is reserved for
emergency shutdown system alarms.
2 This priority is reserved for SPAs, secured process alarms.
(The alarms are "secured" by the use of additional REALM
blocks and an access scheme based on access classes. An SPA
cannot be changed by the operators in the operators'
environments.)
3 Not Used
4 This priority level is reserved for Operator Settable Alarms
(anything else that's not an SPA above).
5 This priority level is for FBM device and channel status,
and out-of-range values.
Duc
--
Duc M. Do
Dow Corning Corp.
Carrollton Plant
Carrollton, KY, US
-----Original Message-----
From: Steve Elwart [mailto:steve.elwart@xxxxxxxxx]
Sent: Wednesday, May 15, 2002 8:26 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Alarm Priorities
We are in the process of taking another look at our alarm priorities.
What is the experience out there with priorities? What have you set up as
the levels? What do each mean?
thanks!
Steven P. Elwart, P.E
Director of Systems Engineering
Ergon Refining, Inc.
2611 Haining Road
Vicksburg, MS 39180-0309
601-638-4960 (O)
601-630-8311 (FAX)
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