M
We are planning to install a DCS with a separate ESD system in the near
future. I want to avoid having redundant instrumentation, so the DCS and
ESD will need to share input values from the field. Does anyone have any
suggestions for doing this? Should I have the inputs wired to the ESD
system and then have a serial connection sending the information to the DCS
for process control? I will be using smart transmitters and I don't want to
loose some of the maintenance and troubleshooting functionality that I have
in the DCS.
ISA S84 states in 7.4.2.2 that sensors for the SIS have to be separate from
the BPCS, but later in B.1.5.1, it states that for SIL 1, a single sensor
may be used for both BPCS and SIS. Which is the truth when I want to stay
S84 compliant?
Regards,
Mike Boudreaux
Akzo Nobel Chemicals, Inc.
http://mike.boudreaux.net
future. I want to avoid having redundant instrumentation, so the DCS and
ESD will need to share input values from the field. Does anyone have any
suggestions for doing this? Should I have the inputs wired to the ESD
system and then have a serial connection sending the information to the DCS
for process control? I will be using smart transmitters and I don't want to
loose some of the maintenance and troubleshooting functionality that I have
in the DCS.
ISA S84 states in 7.4.2.2 that sensors for the SIS have to be separate from
the BPCS, but later in B.1.5.1, it states that for SIL 1, a single sensor
may be used for both BPCS and SIS. Which is the truth when I want to stay
S84 compliant?
Regards,
Mike Boudreaux
Akzo Nobel Chemicals, Inc.
http://mike.boudreaux.net