reactor protection system - rolls-royce · reactor protection system customer benefits •...
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www.rolls-royce.com NUCLEAR INNOVATION & TECHNOLOGY
CAPABILITY SHEET
INSTRUMENTATION AND CONTROL
Reactor Protection System
Customer benefits
• UnparalleledexperienceinDigitalProtectionSystems
• Spinline™ReactorProtectionSystemarchitecturecanbeadaptedtoallreactortypes:PWR,VVER,BWR,PHWR
• Architecturefeaturesseveralunitlevels(acquisition,processingandvotinglogic)linkedviaspecialNERVIAsafetynetworks
• Deterministicbehaviour,fail-safeandfaulttolerantfeatures,signaldiversity,physicalandfunctionalseparationarethemainfeaturesofSpinline™incompliancewithinternationalnuclearstandards
Whenitcomestosafety,theReactorProtectionSystem(RPS)isthemostimportantInstrumentationandControl(I&C)systemforourcustomers.
Underpinnedbyourpatentedandworld-leadingSpinline™technology,theRolls-RoyceSpinline™RPSgathersthefunctionalitiesoftheReactorTripsystemaswellastheEngineeringSafetyFeaturesActuationSystem(ESFAS).Itmonitorsvitalreactoroperationparametersandincaseofemergency,automaticallyshutsdownthereactoranddeterminesthecorrectiveactionstobetaken.
AllthecircuitsinvolvedincorrectingabnormalsituationsareactivatedbytheSpinline™RPSincluding:
• Emergencyshutdownofthereactorcore(whichinterruptsthenuclearfissionreactionbyloweringrodsintothereactorcore);
• Safetyinjection;
• Start-upoftheemergencyfeedwater;
• Steamlineandfeedwaterlineisolation;
• Containmentsprayingandisolation.
Features
Becausesafetyiscrucialinanuclearenvironment,theRolls-RoyceReactorProtectionSystemfollowsthecriteriaoutlinedininternationalstandardsandrecommendations,including:
• Singlefailurecriterion:
– Protectionchannelredundancy:asinglefailureshouldundernocircumstancestriggeranyprotectiveactions
– Independentprotectionandmonitoringchannels;
• Testduringfullpoweroperation:periodictestingofeachprotectionchannelduringoperation;
• Protectionagainstcommoncausefailure:detectionandidentificationofeveryeventusingtwodifferentparameters(functionaldiversitycriterion);
• Continuousmonitoringtopreventsafetyactionsfrombeingbypassedandhenceprohibitedactionsfrombeingtriggered;
• Keepingthesystemsafeintheeventofafailure;
• Executionofallprotectionactionsattherighttime;
• Possibilityoftriggeringemergencyshutdownandsafetyfunctionsmanuallyfromthecontrolroom.
Rolls-Royce23CheminduVieuxChêne38246Meylan–Cedex,FranceTel:+33(0)476611500Fax:+33(0)476611707Email:[email protected]
www.rolls-royce.com
©2011Rolls-Royceplc
Whilstthisinformationisgiveningoodfaith,nowarrantyorrepresentationisgivenconcerningsuchinformation,whichmustnotbetakenasestablishinganycontractualorothercommitmentbindinguponRolls-Royceplcoranyofitssubsidiarycompanies.
Reactor Protection System
Main technical characteristics
• Monitoringsystemsdesignedusingprotectionalgorithms;
• Redundancyfactor2,3or4forsensors,instrumentationandsignalprocessing;
• 2outof3,or2outof4logicprocessing;
• On-linemaintenancecapabilitywithoutcompromisingsafety;
• Automatedtests.
Functions
Protectionfunctionsdependonthefindingsofsafetystudiescarriedoutonthereactor.
Spinline™ReactorProtectionSystemhasthefollowingmainfunctions:
• Emergencyshutdowntriggering;
• Safetyinjectiontriggering;
• Auxiliaryfeedwaterstart-up;
• Isolationofsteamlines;
• Mainfeedwaterisolation;
• Two-stagecontainmentisolation.
Inaddition,Spinline™ReactorProtectionSystem:
• Hasapermanentself-monitoring/testingsystem;
• Modifiesitsvotinglogicinrelationtofaultsobservedsothatsystemavailabilityisoptimizedwithoutcompromisingsafetyobjectives;
• Transmitsallthedatanecessaryforcontrolandmonitoringtothecontrolroomandnonsafetyclasssystems(triggeringstatus,measurementvalues,measurementresults;)
• Includestroubleshootingassistancefunctionsforeasylocationofdefectivemodules.
Standards
Spinline™technologydesignedtocomplywithsafetyrequirementsinherentinnuclearI&C.
SoftwareisdevelopedinstrictcompliancewithInternationalandUSstandards.
HardwarehasbeenqualifiedforElectromagneticCompatibility(EMC),environmental,andseismicconditions.
Spinline™complieswithinternationalnuclearstandards,including:
• AIEAsafetyguides–Safetyandsafetyrelatedsystems;
• IEC61226–CatA&Bfunctionsandassociatedsystemsandequipment;
• IEEE308/IEEE603andIEEE7-4.3.2–Class1Esystems;
• IEC61513–Class1systems;
• RCC-E.
References
• France:20unitsof1300MWreactors,4unitsof1450MWreactors–N4series,2unitsofresearchreactors
• CzechRepublic:4units(Dukovany)
• Lithuania:1unit(Ignalina)
• Armenia:1unit(Metzamor)
ExampleofSpinline™ReactorProtectionSystem
architecture
7676/CS.08/Feb11