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Nuclear I&C Research Lab

Nuclear Power Control Test Facility (NPCTF)

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Simulator and Console

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Distributed Control Systems

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5

Current Research Program

& Projects

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

Safety System Verification and Validation (V&V)

LOCA Fault Insertion on UPCTF

Trip Assumed Fault

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HFControls HFC6000

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

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

Safety Boundary Identification and Analysis

Controller Actuator

Sensors

Process PV1, PV2,…PV3

+

Set Point (SP) Output

-

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

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-

34

Pump 2

Turbine &

Generator

CV-11

Wonderware HMI and DeltaV

HMI

DeltaV Server Controller

NPCTF 19

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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22 22

Field Device

(Sensor)

Monitoring

Device

Transmitting

Antenna Receiving

Antenna

Interfering

Noise

NPP Containment

Wireless

Receiver

Wireless sensor (steam generator)

WSNs in NPPs

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

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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