• PLC

One Stop Shop

for production automation

Failsafe control system for oil pipeline

Replacement of control system of oil pipeline. Improvement of the stability of the communication system between the various sub-stations.

ABOUT THE CUSTOMER
Our client is the fifth largest group, active in the extraction, refining and distribution of oil and gas products in the world. The group has a production capacity of 2,34 million barrels per day and has 16.425 filling stations worldwide.

THE REQUIREMENT
The pipeline was controlled by Siemens Step5 PLCs; the availability of spare parts was however a critical factor. The communication between the substations through leased lines was expensive and not reliable. There was a crucial need for a changeover to a "state of the art" control system.
The pipeline is supervised and operated from one of the end points. Each communication problem results in a stoppage of the pipeline. The system must be capable of flexible extension, in order to evolve with the changing safety and environment standards.

THE SOLUTION
A safety PLC of Siemens was selected to meet the need for safe and stable operations. All functions covered under the relevant safety standards were handled with failsafe I/O to SIL3 level (emergency stop pushbuttons, failsafe interlock of pumps). Other functions such as monitoring the mains voltage, UPS, etc. were handled with standard I/O. Both functions (failsafe and standard) will be implemented by the "Safety Integrated" concept of Siemens, with one and the same system.
The communication between the various sub-stations takes place via Industrial Ethernet, using the Belgacom Bilan SDSL network. Each substation also has another ISDN backup communication line.

SELECTION OF DE ROEVE

  • De Roeve has been working for this customer since 1999, and the mutual relationship is a textbook example of a "sustainable partnership".
  • De Roeve has the capacity to execute the entire project with its own personnel, from analysis to implementation. 
  • De Roeve can offer 24 hours maintenance service.

 

PROJECT DATA

  • PLC: 6 x Siemens STEP7 CPU 317-F
  • HMI: GE iFix SCADA
    (Master/Backup server with 4 clients)
  • I/O: 800