Re: [foxboro] 100 Series FBM Reliability Data
- From: "Cassie, Barry (Kinleith)" <Barry.Cassie@xxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 19 Oct 2007 11:01:31 +1300
Our plant has had 2 bad experiences with older fbms within the last
year, both from power outages - first was ups incident and the second
from an extended black-out due to lightning strike.
From these 2 power disruptions we sent back approx 30 fbm01/04s to
Foxboro for repair, nearly all rev OJ 1989/90 era.
I would like to see all the older fbms replaced asap.
This is a sure sign that some components are well past their use-by
date.
Barry
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of dave.caldwell@xxxxxxxxxxxxxx
Sent: Friday, 19 October 2007 10:30 a.m.
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] 100 Series FBM Reliability Data
All Knowing List,
I need help in justifying to management why we should be replacing the
1989 vintage 100 series FBMs in our plant with brand new 200 series. The
question is being asked how much longer can we continue to run before
these FBMs start to fail (never mind that they aren't being made
anymore).
We have collected failure data from our own plant that suggests that at
least some of the FBMs are showing signs of aging. I base this on a
marked increase in EEPROM upgrades for the very oldest FBM04s in recent
years.
I've looked at the data Foxboro provides for 100 series reliability in
the past, and don't think their numbers show any big failure increase.
(In fact, I think some of the FBMs actually improved with age!) Of
course, this data is most likely based on returned FBMs and some folks
may just be putting their old ones in a dumpster.
Anyway, my questions for the list are:
* Does anyone have any failure data on very early 100 series FBMs?
* Are there signs that these are reaching end-of-life?
* Is there a reliability justification for replacing these older
modules?
Your thoughts are appreciated.
Dave
=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. Read http://www.thecassandraproject.org/disclaimer.html
=20
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
DISCLAIMER: This electronic message together with any attachments is=20
confidential. If you are not the intended recipient, do not copy, disclos=
e or=20
use the contents in any way. Please also advise us by return e-mail that =
you=20
have received the message and then please destroy. Carter Holt Harvey is =
not=20
responsible for any changes made to this message and / or any attachments=
=20after=20
sending by Carter Holt Harvey. We use virus scanning software but exclude=
=20all=20
liability for viruses or anything similar in this email or any attachment=
.
_______________________________________________________________________
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=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
Other related posts:
