Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
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
Upcoming SlideShare
Loading in …5
×

SIL review

7,891 views

Published on

Example of SIL Review for Oil & Gas facility

Published in: Engineering

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

×