Safety Considerations Guide, Tricon v9.0 - Tuv-fs.com

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10 Hazard and Risk AnalysisUsing the EquationsλDU TI PFD ResultPressure Transmitters (2oo3) 2.28E-06 4380 1.00E-04Temperature Transmitters (2oo3) 2.85E-06 4380 1.56E-04Total for Sensors2.56E-04Block Valves (1oo2) 2.28E-06 4380 3.33E-05Total for Block Valves3.33E-05Tricon Controller2.00E-05PFD avg for System 3.09 E-04To determine the SIL, compare the calculated PFD avg to the figure on page 8. Inthis example, the system is acceptable as an SIS for use in SIL3 applications.Safety Life Cycle ModelThe necessary steps for designing an SIS from conception throughdecommissioning are described in the safety life cycle.Before the safety life cycle model is implemented, the following requirementsshould be met:• Hazard and operability study has been completed• SIS requirement has been determined• Target SIL has been determinedTricon Safety Considerations Guide
Hazard and Risk Analysis 11Flowchart of SafetyLife CycleStartDesignconceptual processPerform processhazard analysisand riskassessmentApply non-SISprotection layers toprevent identifiedhazards or reduceriskDevelop safetyrequirementsdocumentPerform SISconceptualdesign and verifyit meets the SRSPerform SISdetail designEstablish operationand maintenanceprocedurePre-start-upsafety reviewassessmentSIS start-upoperation,maintenance,periodic functionaltestingExitNoSIS required?YesDefine target SILSIS installation,commissioning,and pre-startupacceptance testConceptual process designModifyModify ordecommissionSIS?DecommissionSISdecommissioningS84.01 ConcernChapter 1Safety Concepts
Page 1 and 2: TriconVersion 9Safety Consideration
Page 3: AcknowledgementTriconex acknowledge
Page 6 and 7: viRelated DocumentsRelated Document
Page 8 and 9: viiiHow to Contact TriconexHow to C
Page 10: xTrainingFor Turbomachinery Systems
Page 13 and 14: xiCONTENTSAbout This Guide ........
Page 15 and 16: xiiiAnalog Input Module Alarms ....
Page 17 and 18: CHAPTER 1Safety ConceptsThis chapte
Page 19 and 20: Safety Overview 3Protection LayersT
Page 21 and 22: Hazard and Risk Analysis 5Hazard an
Page 23 and 24: Hazard and Risk Analysis 7Completio
Page 25: Hazard and Risk Analysis 9Equation
Page 29 and 30: Hazard and Risk Analysis 13Some key
Page 31 and 32: Safety Standards 15Safety Standards
Page 33 and 34: Safety Standards 17Application-Spec
Page 35 and 36: CHAPTER 2Application GuidelinesThis
Page 37 and 38: General Guidelines 21• Under cert
Page 39 and 40: Guidelines for Tricon Controllers 2
Page 53 and 54: CHAPTER 3Fault ManagementThis chapt
Page 55 and 56: System Diagnostics 39System Diagnos
Page 57 and 58: Operating Modes 41Operating ModesEa
Page 59 and 60: Module Diagnostics 43Module Diagnos
Page 61 and 62: Module Diagnostics 45Relay Output M
Page 63 and 64: Module Diagnostics 47System Attribu
Page 65 and 66: CHAPTER 4Application DevelopmentThi
Page 67 and 68: Important TriStation Commands 51Imp
Page 69 and 70: Setting Scan Time 53Setting Scan Ti
Page 71 and 72: Sample Safety-Shutdown Programs 55S
Page 73 and 74: Sample Safety-Shutdown Programs 57I
Page 75 and 76: Sample Safety-Shutdown Programs 59A
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Sample Safety-Shutdown Programs 61P
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Sample Safety-Shutdown Programs 63O
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Sample Safety-Shutdown Programs 65D
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Sample Safety-Shutdown Programs 67P
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APPENDIX APeer-to-Peer Communicatio
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Data Transfer Time 71ParameterTS =S
Page 89 and 90:
Examples of Peer-to-Peer Applicatio
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TR_CRITICAL_IO Function Block 75TR_
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TR_CRITICAL_IO Function Block 77Par
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TR_CRITICAL_IO Function Block 79Str
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TR_CRITICAL_IO Function Block 81CO
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TR_SHUTDOWN Function Block 83Parame
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TR_SHUTDOWN Function Block 85Relate
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TR_SHUTDOWN Function Block 87* Exam
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TR_SHUTDOWN Function Block 89TIMER_
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TR_VOTE_MODE Function Block 91Param
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TR_VOTE_MODE Function Block 93Appen
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APPENDIX BShutdown Function BlocksT
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TR_CRITICAL_IO Function Block 974 R
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TR_CRITICAL_IO Function Block 99Rel
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TR_CRITICAL_IO Function Block 101*
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TR_SHUTDOWN Function Block 103TR_SH
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TR_SHUTDOWN Function Block 105Param
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TR_SHUTDOWN Function Block 107Struc
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TR_SHUTDOWN Function Block 109IF CI
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TR_VOTE_MODE Function Block 111TR_V
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TR_VOTE_MODE Function Block 113Stru
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Index 115IndexAactual scan time 53a
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Index 117Modbus master functions 25
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Index 119timescan 53TMR architectur
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