Re: [foxboro] Control loops per operator
- From: "Perez, Claudio" <CPerez@xxxxxxxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 14 Mar 2006 10:29:11 -0300
Guillermo:
Esto es una respuesta que tuve del grupo de usuarios de Foxboro.
Estoy haciendo un recuento mas detallado para que de una idea mas clara.
Despues te lo paso.
Saludos
-----Mensaje original-----
De: tom.vandewater@xxxxxxxxxxxxxx [mailto:tom.vandewater@xxxxxxxxxxxxxx]
Enviado el: Martes, 6 de Julio de 2004 12:48
Para: foxboro@xxxxxxxxxxxxx
Asunto: Re: [foxboro] Control loops per operator
Claudio,
There is a lot of discussion as to whether or not using a loop count
or # of controller count per operating technician is an effective way of
measuring technician utilization but I know it varies widely based on the
amount of control coordination and automation installed and it also makes a
big difference as to whether the processes are continuous like many
distillation trains, or batch like many reactor systems. I have an easy way
to document how many analog controllers, (such as PID, DGAP, PTC), each of
our operators are controlling and it ranges from 148 to 246 per operating
technician in our plant. That doesn't include any of the discrete
controllers used for discrete valves and motors but I have found that our
discrete functions are generally twice the number of the analog controllers
for our processes so you can do the math. I would be interested in hearing
comparisons from other plant operations throughout the world and this is a
great forum for it.
Via automation over the years the number of board operating
technicians required to run the plant has been reduced. This can allow the
freed up resources to focus more on improving the reliability of the field
equipment via increased preventive maintenance activities.
Tom VandeWater
Control Systems Developer/Analyst
Dow Corning Corporation
Carrollton, KY USA
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of Perez, Claudio
Sent: Monday, July 05, 2004 11:25 AM
To: 'foxboro@xxxxxxxxxxxxx'
Subject: [foxboro] Control loops per operator
Gentlemen:
Do somebody have some figures about the right number of operators
per control loops (pid, hand controls, i/o, etc). Is there some =
standard to
follow? Till now I couldn't find good information.
Thanks in advance.
Claudio A. Perez
Control Systems Eng.
PROFERTIL S.A.
(54) 291 459-8139
cperez@xxxxxxxxxxxxxxxx
www.profertil.com.ar
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debe ser considerada como propuesta, aceptación ni como una declaración de
voluntad oficial emanada de Profertil S.A. La transmisión de e-mails no
garantiza que el correo electrónico sea seguro o libre de error. Por
consiguiente, no manifestamos que esta información sea completa o precisa.
Toda información estará sujeta a alteraciones sin previo aviso.
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only. If you are not the intended recipient of this message and you have
received this information, please delete the message. You are hereby
notified that any distribution or copying of this message is strictly
prohibited. This communication is for information purposes only and shall
not be regarded neither as a proposal, acceptance nor as a statement of will
or official statement from Profertil S.A. Email transmission cannot be
guaranteed to be secure or error-free. Therefore, we do not represent that
this information is complete or accurate. All information is subject to
change without notice.
_______________________________________________________________________
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
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