Part 5 of 6 - Implementation Phase - Safety Lifecycle Seminar - Emerson Exchange 2010

2,470 views

Published on

Published in: Business

Part 5 of 6 - Implementation Phase - Safety Lifecycle Seminar - Emerson Exchange 2010

  1. 1. Implementation Phase<br />
  2. 2. Implementation Phase<br />
  3. 3. Implementation Phase<br />
  4. 4. Implementation Phase<br />
  5. 5. Implementation Phase<br />
  6. 6. Design and Engineering of theSafety Instrumented System<br />
  7. 7. Design and Engineering of theSafety Instrumented System<br />Iterate if requirements are not met.<br />
  8. 8. Technology selection<br />Sensors<br />Analog vs. discrete signal<br />Smart vs. conventional transmitter<br />Certified vs. proven-in-use<br />
  9. 9.
  10. 10.
  11. 11. SIS Application?<br />Certified<br />Prior-Use<br />Mfg proves<br />It’s safe<br />PFD<br />PFD<br />User proves<br />It’s safe<br />PFD<br />User proves<br />It’s safe<br />
  12. 12. Technology selection<br />Logic solver<br />Relays vs. PLC vs. Safety PLC<br />HART I/O vs. conventional analog<br />Centralized vs. modular<br />Integrated vs. Standalone<br />
  13. 13.
  14. 14.
  15. 15.
  16. 16. Centralized Logic Solver<br /><ul><li>100’s of SIF’s in one box.
  17. 17. Good for large projects.
  18. 18. Single point of failure.</li></ul>Modular Logic Solver<br /><ul><li>Isolates SIF’s
  19. 19. Scalable for large & small projects
  20. 20. Eliminates single point of failure.</li></li></ul><li>Source: ARC Advisory Group<br />
  21. 21. Technology selection<br />Final element<br />Solenoid vs. DVC<br />Automated vs. manual diagnostics<br />Response time considerations<br />
  22. 22.
  23. 23. SIL 2<br />PFD<br />Proof Test Interval (years)<br />
  24. 24. Architecture selection<br /><ul><li>Hardware fault tolerance (HFT) impacts performance
  25. 25. Safety integrity
  26. 26. Availability
  27. 27. SIL capability</li></li></ul><li>Valve<br />
  28. 28. Valve 1<br />Valve 2<br />Valve<br />
  29. 29. Valve 1<br />Valve 2<br />Valve 1<br />Valve 2<br />Valve<br />
  30. 30.
  31. 31.
  32. 32. Proof test philosophy<br />Proof test frequency<br />5 yrs, 1 yr, 6 mos, 3 mos?<br />Online vs. offline proof testing.<br />Turnaround schedule?<br />Total SIF proof test or proof test components on different intervals?<br />
  33. 33. Reliability evaluation<br />Confirm that performance meets specifications<br />Safety integrity (PFD)<br />Availability (MTTFs)<br />Response time<br />
  34. 34.
  35. 35. λD= 0.02 failures/yr<br />λS = 0.01 failures/yr<br />T = 1 year<br />1oo2<br />2oo3<br />1oo1<br />2oo2<br />
  36. 36. PFDSIF1 = PFDPT-101 +PFDlogicsolver+ PFDFV-101<br />Logic solver<br />SIF #1<br />PT-101<br />FV-101<br />
  37. 37. Source: IEC 61511-1, Table 3 – Safety Integrity Levels: probability of failure on demand<br />
  38. 38. Detailed design & build<br />Instrument design / specifications<br />Wiring drawings<br />Hardware design & build<br />Software design & implementation<br />BPCS / SIS integration<br />Factory acceptance testing<br />
  39. 39. Factory Acceptance Testing (FAT)<br />
  40. 40. Installation, Commissioning and Validation<br />
  41. 41. Installation, commissioning, and Validation<br />Validation is the key difference between control and safety systems.<br />
  42. 42. ?<br />

×