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HYDROPROCESSING UNIT PROCESS CONTROL MODERNIZATION Shell
Deer Park Refinery Company - Deer Park, TX
Emerson Process Management was awarded a
contract by Shell to provide process control equipment, engineering and procurement
services, and construction for the re-instrumentation of the Hydroprocessing units,
Selective Hydrocracker (SHCU)-Hydrogen Plant 1 (HP1)-Process Swing Absorber (PSA)-Catalytic
Reformer 3 (CR3), at the Deer Park refinery. The objective was to replace existing
pneumatic, electronic single-loop instrumentation, PLC and relay-based shutdown
systems with a DCS and safety system, and relocate operators to a central refinery
control building. The project scope involved working with multiple vendors, contractors,
and refinery support groups to accomplish the objective, within the Shell specified
dates. The project was divided into three phases, two turnarounds and one hot
cutover, to accommodate two scheduled turnarounds. The engineering work was executed
on-site and at two remote Emerson industry centers. Emerson was selected
because it has previous experience with re-instrumentation projects. Further project
details follow.
Conceptual Design
- Develop control system requirements for the Hydroprocessing units, on a "replace-in-kind"
basis.
- The design incorporate DeltaV controllers and Foundation Fieldbus
field devices, including control in the field.
- Replace relay based ESD
system with new triple redundant system, Triconex, including new field devices.
- Replace
existing turbo-machinery vibration monitoring devices with new controls and field
devices.
- Engineer, purchase and install over thirty-five hundred new field
devices.
- Cutover to DeltaV and Foundation Fieldbus control while the units
are running.
- Conducted P&ID walk-downs to determine the "as-found"
state of the units.
- Conducted P&ID reviews with the client's engineering
and operations personnel to verify the "as-found" state of the units.
- Conducted
additional P&ID reviews to determine requirements for units after the re-instrumentation
was completed. This included developing a Shell standard for depicting the new
Foundation Fieldbus Rosemount transmitters and Fisher Controls DVC valve positioners.
- Worked
with the client's engineering and operations personnel, determine the scope of
the emergency shutdown systems and compressor speed and surge controls.
- Provided
all documentation for Independent Project Analysis (IPA) review.
Detailed
Design - Provide an AFE quality estimate in support of
Shell funding project plans.
- In conjunction with the PI&D reviews,
developed a project instrument database that was used for all aspects of the engineering
and design work. The database will be converted to INtools format for long-term
use by Shell. INtools will be used to generate loops drawings, instrument specifications,
etc. for the project. This involved developing what would become Shell Deer Park's
INtools standard spec sheets, loop drawings, Fieldbus segment drawings, etc. Documents
generated will be used for installation, loop checkout, and hot cutover. At the
end of the project the INtools database will be used to generate "run and
maintain" documents.
- Design and provide three remote instrument enclosures
for DCS, ESD, and peripheral systems.
- Provide civil, structural design
for the three remote instrument enclosures.
- Provide piping design for
new level bridles required by the installation of new transmitters.
- Determine
requirements and provide new machinery vibration monitoring systems for three
compressors.
- Work with client's electrical support personnel to specify
uninterruptible power system and power distribution panels.
- Provide complete
configuration for control system, including control functionality, operator graphics,
and complex loop control schemes.
- Design communications system and provide
hardware and software to allow for the use of OPC to integrate the following systems:
DeltaV, ESD, vibration monitoring, historical data collection, AMS, etc.
- Provide
installation material and labor to install, test, and cutover all new cable tray,
instrument and power cables, junction boxes, RIE, FFB field devices.
- Provide
loop/segment checkout personnel, using Shell approved lop and segment checkout
procedures.
- Provide project schedules and cost reporting throughout the
entire project.
- Conduct Shell/Emerson weekly project team meetings to
review.
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