Offshore Oil Platform

Problems

• Recurring hardware failures of an out-dated, 25-year old, PLC were reducing production output.
• Glitches in the existing HMI periodically caused the system to freeze, causing operators to lose contact with their control system.

Solutions

• Replaced the main PLC for the platform.
• Upgraded the existing HMI with a new interface, new screens, and a streamlined network architecture.
• Upgraded the existing SCADA system with new computers, network switches and protocols, and PLC communication cards.
• Integrated the new equipment with the 6 existing PLCs.
• Provided detailed electrical drawings including:
  • PLC drawings
  • Networking drawing

Results

• More productive employees.
• More reliable equipment.

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Details

Client: DCOR, LLC
Location: Platform Gilda

PLCs:

• (3) DirectLogic D4-450
• (2) DirectLogic D2-250(-1)
• (2) DirectLogic D2-260
• 550 discrete, 47 analog

HMIs:

• (3) SCADA nodes - Wonderware InTouch 9.5
• 1260 tagnames

Remote Alarming:

• none

Data Historian:

• none

Other Components Integrated through SCADA:

• DetTronics - flame detection panel
• MSA - combustible and toxic gas detection panel
• Variable Speed Drives
  • Centrilift
• WindowsXP service pack 2

Networking, Protocols, and Drivers:

• Modbus RTU
• TCP/IP
• K-Sequence
• EIA-568A
• RS-232
• RS-485
• KEPDirect (OPC server)