Liutaio
Consulting and Engineering Services
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Examples |
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FS |
Functional Safety |
Functional Safety Services Example Documents |
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General EXAMPLE documents |
List of Examples |
Example refers to |
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0418D10SD01 Rev.01 Abbreviations |
1 |
SRS and “SIL
verification” |
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0418D10SD02 Rev.01 Glossary |
SRS and “SIL verification” |
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0418D18SD03
Rev.01 SIF General Design Background |
3 |
FMEDA assessment and “SIL Certification” |
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0418D20SD04 Rev.01 Safeguarding requirements |
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0418H03SD15 Rev.01 Reliability Data Validation |
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Steam Turbine K-1122 |
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72-SIF-213 – Simplified diagram |
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SIF Short
description: Steam Turbine K-1122 high speed operation protection |
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0418D30SD05 Rev.02
Conceptual SRS - Steam Turbine |
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0418D30SD06 Rev.02
SIL verification - Steam Turbine (Detailed Report) |
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0418D30SD06-1 Rev.02
SIL verification - Steam Turbine (Short Report) |
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2 |
Letdown Station |
60-SIF-500 – Simplified diagram |
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SIF Short description: Gas Processing Plant inlet facilities protection against an overpressure operation scenario |
NOTE: |
This EXAMPLE is an interesting case where just one SRS
“Key design statement” change in a SIF design statement, from Case No.1 to
No.2, was enough to make the “SIL verification” assessment to DO NOT be the same
one for both cases. So, both “SIL verification” assessment RESULTs are
different. |
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Key design
statement: Flow cut-off
through one(1) pipe run is successful if at least
just one(1) ESV or QSV is closed. |
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0418E20SD07 Rev.02 Conceptual SRS - Letdown
Station |
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0418E30SD08 Rev.02
SIL verification assessment & report - Letdown Station (Detailed Report) |
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0418E30SD08-1 Rev.02
SIL verification report - Letdown Station (Short Report) |
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Case No.2 |
Key design statement: Flow cut-off through one(1) pipe
run is successful if both ESV and QSV valves are closed. |
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0418E30SD09 Rev.02
Conceptual SRS - Letdown Station |
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0418E30SD10 Rev.02
SIL verification assessment & report - Letdown Station (Detailed Report) |
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0418E30SD10-1 Rev.02
SIL verification report - Letdown Station (Short Report) |
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3 |
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Actuator-Positioner-Valve arrangement
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Short description: An Actuator-Positioner-Valve (APV) arrangement shall be used as the “Final Safety Element” (FSE) in a “Safety Instrumented Function” (SIF). It is required to perform a FMEDA assessment to issue the APV arrangement “SIL Certificate”, to determine if this arrangement satisfies SIL-3 rating in hardware fault tolerance (HFT) 0 or 1 configuration. |
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0418G25SD11 Rev.01
FMEDA Background |
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0418G25SD12 Rev.01
FMEDA study report |
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0418G25SD13 Rev.01 FMEDA assessment & report |
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0418G25SD14 Rev.01
Actuator-Positioner-Valve Arrangement “SIL_Certificate” |
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