candu safety #24 - candu 9 design overview library/19990125.pdf · 2011-09-15 · 24/05/01 candu...
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24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 1
CANDU SafetyCANDU Safety#24 #24 -- CANDU 9 Design OverviewCANDU 9 Design Overview
Dr. V.G. SnellDr. V.G. SnellDirectorDirector
Safety & LicensingSafety & Licensing
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 2
CANDU 9CANDU 9λλ CANDU 9 CANDU 9 -- a single unit design with output >935a single unit design with output >935 MWeMWeλλ optimized for multioptimized for multi--unit constructionunit constructionλλ based on Bruce B and Darlington, integrated 4 unit plants based on Bruce B and Darlington, integrated 4 unit plants
operating in Canadaoperating in Canadaλλ single unit features adapted from CANDU 6single unit features adapted from CANDU 6λλ CANDU 9 design improvements based on utility and industry CANDU 9 design improvements based on utility and industry
feedback and licensing experiencefeedback and licensing experience
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 3
CANDU 6 Bruce B Darlington CANDU 9
# of Fuel channels 380 480 480 480
Fuel Bundle 37 elements 37 elements 37 elements 37 elements
Reactor Coolant Pressure 9.9 MPa(g) 9.9 MPa(g) 9.9 MPa(g) 9.9 MPa(g)
Coolant Outlet Quality 4% 0.7% 2% 2%
Maximum Channel Flow 24 kg/s 24 kg/s 25.2 kg/s 25.2 kg/s
Number of reactor headers 8 6 8 6
Number of Coolant Pumps 4 4 4 4
Number of SteamGenerators
4 8 4 4
Steam Generator SurfaceArea
3200 m2 2400 m2 4900 m2 4900 m2
Power Output 715 MWe 915 MWe 936 MWe 945 MWe
Comparison with operating plants Comparison with operating plants
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Two Unit LayoutTwo Unit Layout
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 5
Reactor BuildingReactor Building
λλ conventional dry containmentconventional dry containmentλλ prestressedprestressed concreteconcreteλλ steelsteel--linedlinedλλ no basementno basementλλ elevated Reserve Water Tank elevated Reserve Water Tank
for accidents instead of for accidents instead of dousing tankdousing tank
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Feeder, header and pipe whip platformFeeder, header and pipe whip platform
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 7
Shield Cooling & End Shield Cooling SystemShield Cooling & End Shield Cooling Systemλλ elevated piping so that a leak in a elevated piping so that a leak in a
pipe does not drain the shield tankpipe does not drain the shield tankλλ connection to Reserve Water Tank connection to Reserve Water Tank
for severe accidentsfor severe accidents
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Control CentreControl Centre
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 9
Control Centre LayoutControl Centre Layoutλλ Main Control RoomMain Control Room
–– work control area & computer hardware roomwork control area & computer hardware room–– Technical Support Centre & Emergency Operating CentreTechnical Support Centre & Emergency Operating Centre–– seismically qualified seismically qualified -- no need for operator to go to no need for operator to go to
Secondary Control Area following an earthquakeSecondary Control Area following an earthquakeλλ Secondary Control AreaSecondary Control Area
–– used only in case of inhabitability or hostile takeover of used only in case of inhabitability or hostile takeover of Main Control RoomMain Control Room
–– all Group 2 control functions are available in the SCA all Group 2 control functions are available in the SCA (shutdown, cool, monitor)(shutdown, cool, monitor)
–– seismically qualifiedseismically qualified
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CANDU 9 Control CentreCANDU 9 Control Centre MockupMockup
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 11
Operability ImprovementsOperability Improvementsλλ separation of plant control and display/annunciation separation of plant control and display/annunciation λλ central overview displaycentral overview displayλλ improved displays to suit operational tasksimproved displays to suit operational tasksλλ improved display navigationimproved display navigationλλ advanced computerized annunciation systemadvanced computerized annunciation systemλλ common plantcommon plant--wide parameter databasewide parameter databaseλλ computerized safety system testingcomputerized safety system testing
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 12
Evolution of Plant Control and MonitoringEvolution of Plant Control and Monitoring
Plant Display SystemPlant Display System
Relay Logic and Analog Relay Logic and Analog ControllersControllers
Distributed Control Distributed Control SystemSystem
Digital Control Digital Control ComputersComputers
-- DisplayDisplay-- AnnunciationAnnunciation-- Control ProgramsControl Programs
-- DisplayDisplay-- AnnunciationAnnunciation
-- Control ProgramsControl Programs-- Relay logicRelay logic-- Most analog control functionsMost analog control functions
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 13
CANDU 6 C&I Systems OverviewCANDU 6 C&I Systems OverviewMAIN CONTROL ROOM
GROUP 1 PROCESSSYSTEMS INTERFACES
SAFETY SYSTEMSINTERFACES
ConsoleWork
Stations
PanelWork
Stations
HardwiredPanel
Devices
HardwiredPanel
Devices
SECONDARY CONTROL ROOM
HardwiredPanel
Devices
GROUP 2 INTERFACES
DCC
SDS2 Primary
SDS2 Backup
CONTROL SENSORS AND ACTUATORS (GROUP1)GROUP 1 SAFETY
SYSTEMS SENSORSAND ACTUATORS
GROUP 2 SYSTEMS SENSORSAND ACTUATORS
KEY
CONT CONTAINMENTISOLATION
ECC EMERGENCYCORE COOLING
ISO SIGNAL ISOLATIONOR BUFFERING
SDS SHUTDOWNSYSTEM
DATA LINK
SIGNAL WIRING
SDS1 Primary
SDS1 Backup
WOLSONG
DCC DIGITALCONTROLCOMPUTER
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CANDU 9 C&I Systems OverviewCANDU 9 C&I Systems OverviewMAIN CONTROL ROOM
GROUP 1 PROCESSSYSTEMS INTERFACES
SAFETY SYSTEMSINTERFACES
ConsoleWork
Stations
PanelWork
Stations
HardwiredPanel
Devices
ConsoleWork
Stations
HardwiredPanel
Devices
SECONDARY CONTROL ROOM
PanelWorkStations
HardwiredPanel
Devices
GROUP 2 INTERFACES
ISO
ISO
ISO
GROUP 2SSM
ISO
ISO
PDS
ISO ISO ISO
SDS2 SSS
ECC
CONTROL SENSORS AND ACTUATORS (GROUP1)GROUP 1 SAFETY
SYSTEMS SENSORSAND ACTUATORS
GROUP 2 SYSTEMS SENSORSAND ACTUATORS
RRS HTS SG
AUX CP FH
KEY
AUX AUXILIARYSYSTEMSCONTROLLOGIC
CONT CONTAINMENTISOLATION
CP CONVENTIONALPLANTLOGICCONTROL
ECC EMERGENCYCORE COOLING
HTS HEAT TRANSPORTSYSTEMCONTOLLOGIC
FH FUEL HANDLING
ISO SIGNAL ISOLATIONOR BUFFERING
PDS PLANT DISPLAYSYSTEMS
RRS REACTORREGULATINGSYSTEMCONTROL LOGIC
SDS SHUTDOWNSYSTEM
SG STEAMGENERATORCONTROLLOGIC
SSS
SSM SAFETY SYSTEMMONITOR
SAFETY SUPPORT SYSTEMS
DISTRIBUTED CONTROL SYSTEM
DATA LINK
SIGNAL WIRING
ISO ISO
SDS1
CONT
GROUP 1SSM
CANDU 9
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 15
Plant Display System Plant Display System -- Improved NavigationImproved Navigationλλ two redundant forms of two redundant forms of
navigation are provided at all navigation are provided at all timestimes–– navigation icons within navigation icons within
process monitoring and process monitoring and control displays, andcontrol displays, and
–– direct display selection direct display selection via ‘soft function’ keypadsvia ‘soft function’ keypads
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 16
Plant Display System Plant Display System -- Improved NavigationImproved Navigation
Links to other displays
Links to control dialogs
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 17
λλ system supports overall operational strategy to managing system supports overall operational strategy to managing plant upsets and emergenciesplant upsets and emergencies
λλ CSP display providesCSP display provides–– functional representation of safety state of the plantfunctional representation of safety state of the plant–– high level physical map to key CSPhigh level physical map to key CSP--related systemsrelated systems
λλ CSP monitoring is part of the Safety System Monitor Computer CSP monitoring is part of the Safety System Monitor Computer DisplayDisplay
Critical Safety Parameter Monitor SystemCritical Safety Parameter Monitor System
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 18
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24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 19LCV201
PHP003
LCV202
LCV203
kg/sD20Flow
135.5
kg/sRHTR3.5
kg/sFlow
23.5
SG1
35.5 % 35.5 %
35.5 %
Enhanced Process Monitoring/Control DisplaysEnhanced Process Monitoring/Control Displays
15:10:00 15:12:00 15:14:00 15:16:00
10
5
0
SG 4 m6.0SDS1
SG 3 m6.5SG 2 m7.0SG 1 m1.0
Boiler Levels Boiler 1 Lvl Low
HT Pressure HighZone HDR Pres LoN Condenser 1 Low
RCW Temp HighDemin Flow Low
CSDVs ClosedPower & Generating
LZC P2 RunningN HT Purif Isolated
Alternate Mode
FaultsFaults StatusStatus
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 20
Advanced Computerized Annunciation SystemAdvanced Computerized Annunciation Systemλλ alarm processingalarm processing
–– prioritization and conditioning based on plant stateprioritization and conditioning based on plant state–– alarm coalescing, causealarm coalescing, cause--consequenceconsequence–– new types of alarms (expectednew types of alarms (expected--butbut--notnot--occurred, OP&P occurred, OP&P
violations, rate and margin violations, rate and margin -- advanced warning)advanced warning)λλ alarm presentation: central displaysalarm presentation: central displays
–– fault messages ordered and colour coded by priorityfault messages ordered and colour coded by priority–– status messages ordered by timestatus messages ordered by time
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 21
<<-- Fault DisplayFault Display
Status Display Status Display -->>
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 22
CANDU 9/CANDU 6 Electrical Overview DiagramsCANDU 9/CANDU 6 Electrical Overview DiagramsGridGrid Turbine/Turbine/
GeneratorGenerator
ClCl IVIVSuppliesSupplies
OnOn--sitesite EmergEmerg..Standby DGStandby DG
OnOn--sitesiteStandby DGStandby DG
ClCl IIIIIISuppliesSupplies
ClCl IIIIIISuppliesSupplies
ClCl II AC PowerII AC PowerInstrumentationInstrumentation
ClCl I DCI DCBatteries & PowerBatteries & Power
ClCl II UPSII UPSAC PowerAC Power
ClCl I DCI DCBatteries & PowerBatteries & Power
ClCl II UPSII UPSAC PowerAC Power
ClCl II AC PowerII AC PowerInstrumentationInstrumentation
Group 2Group 2Group 1Group 1
CANDU 9CANDU 9 GridGrid Turbine/Turbine/GeneratorGenerator
ClCl IVIVSuppliesSupplies
OnOn--sitesite EmergEmerg..Standby DGStandby DG
OnOn--sitesiteStandby DGStandby DG
ClCl IIIIIISuppliesSupplies
ClCl IIIIIISuppliesSupplies
ClCl I DCI DCPowerPower
ClCl II AC PowerII AC PowerInstrumentationInstrumentation
ClCl IIIIAC PowerAC Power
ClCl I DCI DCBatteries & PowerBatteries & Power
ClCl II UPSII UPSAC PowerAC Power
ClCl II AC PowerII AC PowerInstrumentationInstrumentation
Group 2Group 2Group 1Group 1
CANDU 6CANDU 6
ECC Pumps &ECC Pumps &Other LoadsOther Loads
24/05/01 CANDU Safety - #24 -CANDU 9 Design Overview.ppt Rev. 0 vgs 23
SummarySummaryλλ evolutionary improvement approach ensures updated designs evolutionary improvement approach ensures updated designs
without economic risk of new conceptswithout economic risk of new conceptsλλ operating experience reports and database systems are used operating experience reports and database systems are used
to determine improvements to CANDU productsto determine improvements to CANDU productsλλ major improvements in control centre, and instrumentation major improvements in control centre, and instrumentation
and control systemsand control systemsλλ major improvements in safety (next lecture)major improvements in safety (next lecture)