• PLC

One Stop Shop

for production automation

Failsafe system for fuel distribution depots

A system is being developed for the fuel distribution depots with which all safety-critical elements can be managed properly.

ABOUT THE CUSTOMER
Our client is a company active all over the world in the extraction, refining and distribution of petroleum products. The failsafe system developed is used in six fuel distribution depots in Belgium, in which trucks and ships are loaded with petroleum products fully automatically.

THE REQUIREMENT
A safe and reliable system is to be constructed according to the applicable standards (IEC61508 and EN954-1), and according to a standard design applicable in all depots. All safety-critical elements must be capable of integration: emergency stop functions, over-filling protection, earthing detection, gas and hydrocarbon detection systems. The system must be flexibly expandable in order to be able to evolve with the changing standards relating to safety and the environment.

THE SOLUTION
The system is built around a Siemens failsafe PLC. All functions covered under the applicable safety standards shall be handled with failsafe I/O to SIL3 level. (emergency stop pushbuttons, failsafe interlock for pumps, etc.)
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.

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.

 

PROJECT DATA

  • DEPOT 1:
    • PLC: Siemens STEP7 CPU 416-F met distributed safety I/O
    • HMI: 2 x Siemens operatorpanel OP270
    • I/O: 600
  • DEPOT 2:
    • PLC: Siemens STEP7 CPU 416-F with distributed safety I/O
    • HMI: 2 x Siemens operator panel OP270
    • I/O: 350
  • DEPOT 3:
    • PLC: Siemens STEP7 CPU 416-F with distributed safety I/O
    • HMI: 2 x Siemens operator panel OP270
    • I/O: 1.500
  • DEPOT 4:
    • PLC: Siemens STEP7 CPU 317-F with distributed safety I/O
    • HMI: 2 x Siemens operator panel OP270
    • I/O: 350
  • DEPOT 5:
    • PLC: Siemens STEP7 CPU 315-F with distributed safety I/O
    • HMI: 2 x Siemens operator panel OP270
    • I/O: 120
  • DEPOT 6:
    • Siemens STEP7 CPU 315-F with distributed safety I/O
    • I/O: 60