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Nuclear I&C Research Lab
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Nuclear Power Control Test Facility (NPCTF)
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Simulator and Console
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Distributed Control Systems
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Current Research Program
& Projects
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Nuclear Power Control Test Facility (NPCTF)
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NPCTF System Overview
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Primary water
Reacto
r
HX
SG Tank
Pressurizer
Turbine-generator
Upper
tank
Inventory
SD
S1-L
lnaer
moto
r
SD
S2-g
ravity r
od Natural flow-ECCS
Chiller
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Safety System Verification and Validation (V&V)
LOCA Fault Insertion on UPCTF
Trip Assumed Fault
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HFControls HFC6000
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Predictive Shutdown
What do we mean by predictive?
1. Minimum time to reach safety threshold: negate spurious activation.
2. Confidence in reaching safety threshold: guarantee upcoming trip.
Algorithm and Structure
Kalman
predictor
Kalman
corrector
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Tests of safety shutdown systems
Control Test Facility
Invensys Tricon v9
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NPCTF SDS Block Diagram
Fault Tree Construction of the Shutdown Systems
Shutdown Parameter
Sensors
Trip Logic Function
Block
Heater Control
Function Block
Linear Motor Controller (SDS 1)
Rod Gripper (SDS 2)
Cut off Heater Current
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SDS Fault Tree
Fault Tree Construction of the Shutdown Systems
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Transfer Gate
Transfer Gate
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Safety Boundary Identification and Analysis
Controller Actuator
Sensors
Process PV1, PV2,…PV3
+
Set Point (SP) Output
-
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Safety Boundary Identification and Analysis for insider attackers
Safety Analysis
(FMEA)
Failure Modes Identification
Effects Analysis
Severity Ranking
Vulnerabilities Identification
System
Improvement
Attack Identification
Fault Tolerant Control
Redundancy Design
Bullet-proof Design
Safety Boundary
Identification
System Description
System Boundary Definition
On-line Boundary tracking
Dangerous States
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Booster enhances the energy conversion process
Operation relies on internal energy of natural circulation loop
Increases the energy conversion efficiency by 311 times
Improves heat transfer capacity and NC loop design flexibility
Booster
reactor
Self-powered Efficiency Booster in Natural Circulation Loop for Passive Safety Systems
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Linear Dynamic Model Development for Canadian SCWR
MCU:
Diagnostics and
Encryption
Diagram of a Canadian SCWR Plant System
Feed-water Pump
Control Rods
Reactor
Outlet Feeders
Outlet HeaderMain ‘Steam’ Line Control Valve
Turbine
Inlet Plenum
Riser
Temperature
Control
Pressure
Control
Power
Control
Main ‘Steam’
Pressure
Control Valve
Opening
Outlet Header
TemperatureFeed-water
Flow Rate
Reactor
Power
Control Rods
Reactivity
Input-output Pairing
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U-Tube Steam Generator Level Control
Nonlinear Model Predictive Control
Control through Fieldbus
Level Set-point Optimization for Three Term Controller
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Thermal-hydraulic Model for Nuclear Power Control Test Facility (NPCTF)
Nuclear Power Plant
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NPP Simulator
Simulation Technique
Nuclear Power Control Test Facility NPCTF Simulator
Simulation Technique
Lower
Tank
Pump 4
CV-1
CV-2 Heater
Chiller
HX-Tank
Pressurizer
Air
Valve
Highe
r Tank
Pump 1
CV-
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Pump 2
Turbine &
Generator
CV-11
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Wonderware HMI and DeltaV
HMI
DeltaV Server Controller
NPCTF 19
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Wonderware HMI
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Monitoring and Fault Diagnosis
Advanced equipment condition monitoring
Standard algorithm Improved algorithm Pipe vibration monitoring
Sensor mounting
Advanced process fault diagnosis with limited training data
Misclassifications
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Field Device
(Sensor)
Monitoring
Device
Transmitting
Antenna Receiving
Antenna
Interfering
Noise
NPP Containment
Wireless
Receiver
Wireless sensor (steam generator)
WSNs in NPPs
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Wireless sensors can be mounted with equipment
Temperature, humidity, vibration, current, acoustic, level, CO2 etc.
Wirelessly collected data can be sent to, e.g., the control room
Graphic source: http://chemistry.tutorvista.com/nuclear-chemistry/nuclear-power-plant.html
Equipment Monitoring with WSNs in NPPs
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Monitoring using Wireless Sensors
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Wireless Communication Channels under Radiation Environment
Signal Analyzer
RF Cable
Antenna Antenna
RF CablePlastic Post
Plastic Post
With or Without Radioactive Waste
Signal Generator
Steel Pad Steel Pad
A Conceptual Illustration of the Experiment Setup
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Test Equipment Hot-cell
Electrometer Signal
Generator Signal
Analyzer Radioactive Waste
Transmitting/Receiving Antennas
Antennas
Steel Pads
Experiments in the Hot-Cell
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Radiation Monitoring
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Proposed Wireless Post-Accident Monitoring System
Ethernet
GPRS/3G/4G
Rad-Hardened Wireless Detectors Portable Management Unit Remote Server
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Microcontroller
RF Circuits Analog-Digital
Humidity Sensor
RF Circuits
Microprocessor
Proposed Wireless Post-Accident Monitoring System
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