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HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
Have you heard about SIL studies? What does it mean?
What ...
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
Have you heard about SIL studies? What does it mean?
What ...
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
Have you heard about SIL studies? What does it mean?
What ...
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
Have you heard about SIL studies? What does it mean?
What ...
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
Step 1: SIL Determination, “assignment workshop”
 Identif...
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
HERVE
BARON
©2016–HervéBaron
Emergency shutdown (ESD)
SIL study
LIKELIHOOD
CATEGORY
DEFINITION POTENTIAL FREQUENCY
A Possi...
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ?
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ?
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ?
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ??
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ?
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
? ?
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1 – Assignment workshop
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 1: SIL Determination, “assignment workshop”
 Deliverable: SIL assignment logs...
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 2: calculations and recommendation
SIS Performance Verification
 Evaluate the...
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 2 – SIS Performance verification Results
HERVE
BARON
©2016–HervéBaron
SIL Study
Step 2: calculations and recommendation - Summary
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SIL review

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Example of SIL Review for Oil & Gas facility

Publié dans : Ingénierie

SIL review

  1. 1. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study Have you heard about SIL studies? What does it mean? What does SIL, SIF and SIS mean? Terms defined in ANSI/ISA-84.00.01-2004 (IEC 61511-1) Functional Safety: Safety Instrumented Systems for the Process Industry Sector SIF: Safety Instrumented Function SIS: Safety Instrumented System: Sensor + logic solver + final element SIL: Safety Integrity Level: Level used for specifying the safety integrity requirement of SIFs. There are 4 levels:
  2. 2. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study Have you heard about SIL studies? What does it mean? What does SIL, SIF and SIS mean? Terms defined in ANSI/ISA-84.00.01-2004 (IEC 61511-1) Functional Safety: Safety Instrumented Systems for the Process Industry Sector SIF: Safety Instrumented Function SIS: Safety Instrumented System: Sensor + logic solver + final element SIL: Safety Integrity Level: Level used for specifying the safety integrity requirement of SIFs. There are 4 levels:
  3. 3. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study Have you heard about SIL studies? What does it mean? What does SIL, SIF and SIS mean? ANSI/ISA-84.00.01-2004 (IEC 61511-1) Functional Safety: Safety Instrumented Systems for the Process Industry Sector  SIF: Safety Instrumented Function  SIS: Safety Instrumented System: Sensor + logic solver + final element  SIL: Safety Integrity Level: Level used for specifying the safety integrity requirement of SIFs. There are 4 levels:
  4. 4. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study Have you heard about SIL studies? What does it mean? What does SIL, SIF and SIS mean? ANSI/ISA-84.00.01-2004 (IEC 61511-1) Functional Safety: Safety Instrumented Systems for the Process Industry Sector  SIF: Safety Instrumented Function  SIS: Safety Instrumented System: Sensor + logic solver + final element  SIL: Safety Integrity Level: Level used for specifying the safety integrity requirement of SIFs. There are 4 levels:
  5. 5. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study Step 1: SIL Determination, “assignment workshop”  Identification of Instrumented Interlocks on the P&IDs = inventory of Safety Instrumented Function (SIF)  For each SIF: • Qualitative evaluation of consequences if the event the SIF is designed to safeguard from • Qualitative evaluation of the likelihood of the event • Determination of risk level (likelihood * consequence) and resulting SIF required performance (SIL level)  Deliverable: SIL assignment logsheet / worksheets
  6. 6. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD)
  7. 7. HERVE BARON ©2016–HervéBaron Emergency shutdown (ESD) SIL study LIKELIHOOD CATEGORY DEFINITION POTENTIAL FREQUENCY A Possibility of repeated incidents 20 or more times per Facility life B Possibility of isolated incidents 5 times per Facility life C Possibility of occurring sometime Once in Facility life D Not likely to occur Once every 10 Facility lives E Practically impossible Once every 100 Facility lives CONSIDERATIONSCONSEQUENCE CATEGORY Health/Safety Public Disruption Environmental Impact Financial Impact Abbreviation S – Safety P – Public E – Environmental F – Financial I Fatalities/ Serious Impact on Public Large Community (10,000+) Major/Extended Duration/ Full Scale Response Major Impact to Company (>$50 million) II Serious Injury to Personnel/ Limited Impact on Public Small Community (1,000 to 10,000) Serious/Significant Resource Commitment Significant Impact To Company ($2 - $50 million) III Medical Treatment for Personnel/ No Impact on Public Minor (10 to 100) Moderate/Limited Response of Short Duration Moderate Impact To Company ($500M - $2 million) IV Minor Impact on Personnel Minimal to None (1 or 2) Minor/Little or No Response Needed Minor Impact To Company ($50M-$500M)
  8. 8. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ?
  9. 9. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ?
  10. 10. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ?
  11. 11. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop
  12. 12. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ??
  13. 13. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ?
  14. 14. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop ? ?
  15. 15. HERVE BARON ©2016–HervéBaron SIL Study Step 1 – Assignment workshop
  16. 16. HERVE BARON ©2016–HervéBaron SIL Study Step 1: SIL Determination, “assignment workshop”  Deliverable: SIL assignment logsheet / worksheets  Summary: What is the second step of the SIL?
  17. 17. HERVE BARON ©2016–HervéBaron SIL Study Step 2: calculations and recommendation SIS Performance Verification  Evaluate the performance of each SIF, based on device selection, architecture, voting, testing etc.  Compare to required SIL level and specify modifications to the SIF design (device selection, component redundancy) or testing intervals  Deliverable: SIS Performance Verification Results and recommendations
  18. 18. HERVE BARON ©2016–HervéBaron SIL Study Step 2 – SIS Performance verification Results
  19. 19. HERVE BARON ©2016–HervéBaron SIL Study Step 2: calculations and recommendation - Summary

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