April
2009
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© Copyright 2009
BDP Inc.
All Rights Reserved.
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Insights:
Safety
logic audit and validation
services
Procedures and
policies are becoming more
rigorous to manage safety logic
processors in PSM facilities, but
many of our clients are finding
justification to audit and
validate their safety logic on a
periodic basis. A change of
ownership can initiate a need for
safety logic validation.
Often the safety documents
for OEM packages or legacy plant
systems are unavailable or
unclear. When the available
safety documents seem out-of-sync
with current PSM reviews, the
plant operators call on BDP Inc.
to audit and validate their
existing safety logic systems.
The BDP team is
currently involved in several
projects that include safety
logic audit and validation
services. These services
include a review of the existing
safety logic programs and a
comparison with available plant
documents, such as P&IDs,
Cause & Effect matrix, and
operating procedures when
necessary. The BDP safety
logic audit identifies all safety
related ‘effects’ that
represent an output or action by
the safety logic processor.
The BDP review then verifies all
process and instrumentation
inputs or ‘causes’ that
initiate safety actions, to
develop an ‘as found’
Cause & Effect matrix.
The ‘as found’ Cause
& Effect matrix represents
the actual logic in the safety
processor, and when compared to
the PSM approved documents, the
comparison will either validate
the safety actions or identify
discrepancies between actual
logic and approved safety
actions. The BDP Inc.
deliverables include a set of
project documents that provide an
audit trail for the validation
process, and provide a basis for
future Change Management.
Any discrepancies identified
during the safety audit must be
resolved by plant operations as
part of the PSM process.
BDP Inc. offers
process control consulting,
advanced control strategy design
and implementation, and system
integration services to deliver
overall control system
performance enhancements.
Contact BDP Inc. for more
information on similar control
system services and process
control improvements to enhance
your plant operations today.
Events
in the news: BDP Inc. article in
Oil & Gas Journal
BDP Inc. is pleased to have an
article selected for publication
in the April 20, 2009 issue of Oil
& Gas Journal.
Please watch for your copy of
OGJ, and look for Practical
Advanced Control Benefits
Midstream Operations by Barry
Payne.
Partial
List of Current Projects at BDP:
<> Engineering,
configuration, and commissioning
support for a process automation
system at a new gas treating
facility in Texas.
<> Conceptual
engineering and Safety
Instrumented System (SIS) scope
development to upgrade a gas
plant shutdown system in Wyoming.
<> Process
control consulting and APC
strategy commissioning for
enhanced demethanizer and
de-ethanizer control of Y-grade
product quality within process
constraints at a Texas gas plant.
<>
Engineering, configuration, and
commissioning support for PCS and
SIS applications at a compressor
station in western Colorado.
<> Engineering,
configuration, and commissioning
support for an integrated DCS and
SIS control system at a CO2
recovery plant in west Texas.
Partial
List of Systems included in
recent BDP projects:
<> Emerson Delta V control
system.
<> Honeywell Experion PKS
system.
<> MOST process
automation system from GE Fanuc.
<> Wonderware
InTouch HMI with
Allen-Bradley ControlLogix PLC. |
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