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Part 6 of 6 - Operation Phase - Safety Lifecycle Seminar - Emerson Exchange 2010

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Part 6 of 6 - Operation Phase - Safety Lifecycle Seminar - Emerson Exchange 2010

  1. 1. Operation Phase<br />
  2. 2.
  3. 3.
  4. 4. Operation and Maintenance Planning<br />
  5. 5.
  6. 6.
  7. 7.
  8. 8. SFF = 93%<br />
  9. 9. Sensor testing options<br />
  10. 10. Safely test the SIF using actual process variables<br />Sensor testing options<br />
  11. 11. Test sensors in-situ by other means <br />Safely test the SIF using actual process variables<br />Sensor testing options<br />
  12. 12. Remove sensor and test on bench<br />Test sensors in-situ by other means <br />Safely test the SIF using actual process variables<br />Sensor testing options<br />
  13. 13. Perform wiring <br />continuity test<br />Remove sensor and test on bench<br />Test sensors in-situ by other means <br />Safely test the SIF using actual process variables<br />Sensor testing options<br />
  14. 14. Perform wiring <br />continuity test<br />Use smart features to test electronics and wiring continuity<br />Remove sensor and test on bench<br />Test sensors in-situ by other means <br />Safely test the SIF using actual process variables<br />Sensor testing options<br />
  15. 15. Example – Rosemount 3051S Proof Test<br />
  16. 16. Example – Rosemount 3051S Proof Test<br />Proof Test 1:<br />Analog output Loop Test<br />Satisfies proof test requirement<br />Coverage > 50% of DU failures<br />
  17. 17. Example – Rosemount 3051S Proof Test<br />Proof Test 1:<br />Analog output Loop Test<br />Satisfies proof test requirement<br />Coverage > 50% of DU failures<br />Proof Test 2:<br />2 point sensor calibration check<br />Coverage > 95% of DU failures<br />
  18. 18. Example – Rosemount 3051S Proof Test<br />Proof Test 1:<br />Analog output Loop Test<br />Satisfies proof test requirement<br />Coverage > 50% of DU failures<br />Proof Test 2:<br />2 point sensor calibration check<br />Coverage > 95% of DU failures<br />Note – user to determine impulse piping proof test<br />
  19. 19. Valve Testing Options<br />
  20. 20.
  21. 21. SIL 2<br />PFD<br />Proof Test Interval (years)<br />
  22. 22. Source: Instrument Engineers’ Handbook, Table 6.10e – Dangerous Failures, Failure Modes, and Test Strategy<br />
  23. 23. Modification<br />
  24. 24.
  25. 25. ?<br />

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